[go: up one dir, main page]

WO2008004714A1 - Filière d'extrusion de matière métallique - Google Patents

Filière d'extrusion de matière métallique Download PDF

Info

Publication number
WO2008004714A1
WO2008004714A1 PCT/JP2007/063945 JP2007063945W WO2008004714A1 WO 2008004714 A1 WO2008004714 A1 WO 2008004714A1 JP 2007063945 W JP2007063945 W JP 2007063945W WO 2008004714 A1 WO2008004714 A1 WO 2008004714A1
Authority
WO
WIPO (PCT)
Prior art keywords
die
extrusion
metallic material
pressure receiving
case
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2007/063945
Other languages
English (en)
Inventor
Kimihisa Hiramoto
Hidekazu Sakihama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Resonac Holdings Corp
Original Assignee
Showa Denko KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2007056656A external-priority patent/JP5053660B2/ja
Application filed by Showa Denko KK filed Critical Showa Denko KK
Priority to EP07790726A priority Critical patent/EP2040861A4/fr
Priority to US12/307,836 priority patent/US20090293570A1/en
Publication of WO2008004714A1 publication Critical patent/WO2008004714A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C25/00—Profiling tools for metal extruding

Definitions

  • the present invention relates to an extrusion die for ametallic material used for extruding a metallic material and its related art.
  • an extrusion die used for manufacturing a metal hollow extruded product such as , e.g., an aluminum heat exchanging tube for use in a heat exchanger for car air-conditioners
  • a porthole die as shown in Fig. 18A
  • a spider die as shown in Fig.
  • a male die 1 and a female die 2 are combined with the mandrel Ia of the male die 1 placed in the corresponding die hole 2a of the female die 2 to define a circular extrusion hole by and between the mandrel Ia and the die hole 2a.
  • a metal billet (metallic material) pressed against the billet pressure receiving surface (metallic material pressure receiving surface Ib) of the male die 1 is introduced in both the dies 1 and 2 via material introduction holes Ic and then passed through the extrusion hole while being plastically deformed, so that an extruded member having a cross-section corresponding to the cross-sectional configuration of the extrusion hole is formed.
  • Patent Document 1 JapaneseUnexaminedLaid-openUtilityModel Publication No. S53-102938 (see claims. Figs. 3-5)
  • Patent Document 2 Japanese Examined Laid-open Patent Publication No. HO6-81644 (see claims, drawings)
  • the bridge portion is still insufficient in strength although the strength of the male die, such as the resistance to pressure against a metal billet , can be improved to some extent . Therefore , in order to secure sufficient strength of the bridge portion, the size of the male die such as the thickness of the bridge portion has to be increased, which results in not only an increased size and weight but also an increased cost .
  • the preferred embodiments of the present invention have been developed in view of the above-mentioned and/or other problems in the related art .
  • the preferred embodiments of the present invention can significantly improve upon existing methods and/or apparatuses .
  • the present invention was made to solve the aforementioned problems of the conventional technique, and aims to provide an extrusion die for a metallic material capable of obtaining a high quality extruded article while reducing the cost and size of the die and securing sufficient strength and durability of the die.
  • Thepresent invention also aims toprovide relatedtechnologies capable of attaining the aforementioned objects, such as, e.g., a production method of an extruded article, a production method of an extruded tubular member, a production method of a multi-bored hollow member, a die case for an extrusion die, an extrusion method of a metallic material, and an extruder for a metallic material.
  • relatedtechnologies capable of attaining the aforementioned objects, such as, e.g., a production method of an extruded article, a production method of an extruded tubular member, a production method of a multi-bored hollow member, a die case for an extrusion die, an extrusion method of a metallic material, and an extruder for a metallic material.
  • the present invention provides the following means to attain the aforementioned objects.
  • An extrusion die for a metallic material comprising: a male die case having a pressure receiving portion with an external surface constituting ametallicmaterialpressurereceiving surface, the male die case being disposedwith the pressure receiving portion facing rearward against an extrusion direction of the metallic material; a female die case disposed at a front side of the male die case : a male die provided in the male die case; and a female die provided in the female die case to form an extrusion hole by and between the female die and the male die, wherein the metallic material pressure receiving surface of the pressure receiving portion is formed into a convex configuration protruded rearward, and a porthole for introducing the metallic material is formed in an external periphery of the pressure receiving portion, wherein a press-fitting connecting portion is formed at a front side external periphery of the male die case, and a press-fitting dented portion is formed at a rear side external periphery of the female die case, and wherein the press-fitting connecting portion is press-
  • extrusion die for a metallic material as recited in any one of the aforementioned Items 1 to 15, wherein an extrusion hole having a flat circular cross-sectional configuration with a height (thickness) smaller than a width is formed by the male die and the female die, wherein aportion of the male die corresponding to the extrusion hole is formed into a comb-line configuration having a plurality of passage forming protrusions arranged in a width direction, and wherein the metallic material passes through the extrusion hole to form a multi-bored hollow extruded member having a plurality of passages arranged in a width direction.
  • a die case for en extrusion die comprising: a male die case having a pressure receiving portion with an external surface constitutingametallicmaterialpressurereceiving surface , the male die case being disposedwith the pressure receiving portion facing rearward against an extrusion direction of the metallic material , and a male die being provided in the male die case; and a female die case disposed at a front side of the male die case, a female die being provided in the female die case.
  • the metallic material pressure receiving surface of the pressure receiving portion is formed into a convex configuration protruded rearward, and a porthole for introducing the metallic material is formed in an external periphery of the pressure receiving portion, wherein apress-fitting connecting portion is formed at a front side external periphery of the male die case, and a press-fitting dented portion is formed at a rear side external periphery of the female die case, and wherein the press-fitting connecting portion is press-fitted in the press-fitting dented portion, whereby both the die cases are connected with each other with the male die case restrained from periphery thereof by the female die case.
  • a metallic material extrusion method comprising the steps of: preparing a male die case having a pressure receiving portion with an external surface constituting a metallic material pressure receiving surface , the male die case being disposedwith the pressure receiving portion facing rearward against an extrusion direction of the metallic material, a female die case disposed at a front side of the male die case, a male die provided in the male die case, and a female die provided in the female die case to form an extrusion hole by and between the male die and the female die; forming a porthole for introducing a metallic material in an external periphery of the pressure receiving portion having a convex configuration constituting the metallicmaterial pressure receiving surface protruded rearward; forming a press-fitting connecting portion at a front side external periphery of the male die case and forming a press-fitting dented portion at a rear side external periphery of the female die case; connecting both the die cases with the male die case restrained from its periphery thereof by the female die case by press
  • a metallic material extruder comprising a container and an extrusion die set in the container, the extruder being configured to supply a metallic material in the container to the extrusion die
  • the extrusion die comprises: a male die case having a pressure receiving portion with an external surface constituting ametallicmaterial pressure receiving surface , the male die case being disposed with the pressure receiving portion facing rearward against an extrusion direction of the metallic material; a female die case disposed at a front side of the male die case; a male die provided in the male die case; and a female die provided in the female die case to form an extrusion hole by and between the male die and the female die, wherein the metallic material pressure receiving surface of the pressure receiving portion is formed into a convex configuration protruded rearward, and a porthole for introducing the metallic material is formed in an external periphery of the pressure receiving portion, wherein a press-fitting connecting portion is formed at a front side external periphery of the male die case and a press-
  • the strength of the male die case can be increased, which in turn can increase the strength of the entire die and the durability. Since a predetermined strength can be secured, it is not required to increase the size, such as, e.g., the thickness, beyond necessity, resulting in reduced size and weight, which in turn can reduce the production cost.
  • the metallic material pressure receiving surface is formed into a convex configuration, when the metallic material is pressed against the pressure receiving surface, the pressing force of the metallic material can be received by the convex surface in a dispersed manner, which in turn can reduce the pressing force in the direction of the normal line at each portion of the pressure receiving surface.
  • the strength against the pressing force of the metallic material can be improved, resulting in sufficient durability. That is, when the metallic material is pressed against the pressure receiving surface formed into a convex configuration, since the compression force toward the axis of the pressure receiving portion is applied to each portion of the pressure receiving surface, the shearing force to be generated in the die case at the time of extrusion can be reduced. As a result, as to the portion exposed to the hollow portion of the die case, which is a portion where a larger shearing force is applied in this die case, the shearing force to be generated at the portion can be reduced, which can improve the strength of the die against the pressing force of the metallic material.
  • the extrusion die for a metallic material as recited in the aforementioned Item [2] , since an axis of the porthole is disposed so as to incline with respect to an axis of the male die case so that the axis of the porthole approaches the axis of the male die case toward a downstream side, the metallic material passing through the porthole is introduced toward the axis of the male die case, i.e., toward the extrusion hole, which enables a steady extrusion. As a result, a high quality extruded article can be obtained.
  • the male die case can be held by the female die case by an appropriate force , which can further improve the die strength.
  • the extrusion die for a metallic material as recited in the aforementioned Item [4] since the male die case and the female die case are separated, the structures of these die cases can be simplified. According to the extrusion die for a metallic material as recited in the aforementioned Item [5] to [7], the male die case is integrally formed to the female die case, the number of parts can be reduced.
  • the extrusion die for a metallic material as recited in the aforementioned Item [8] to [12] , since the metallic material pressure receiving surface is formed into a predetermined convex configuration, when the metallic material is pressed against the pressure receiving surface, the pressing force of the metallic material can be received in a dispersed manner, which in turn can reduce the pressing force in the direction of the normal line at each portion of the pressure receiving surface. This improves the strength against the pressing force of the metallic material, which in turn can assuredly obtain sufficient durability.
  • the pressing force of themetallicmaterial against the pressure receiving surface can be more assuredly dispersed in a balanced manner, resulting in more assuredly improved strength against the metallic material pressing force. That is, when the metallic material is pressed against the pressure receiving surface constituted by a specific convex sphere , the compression force toward the center of the pressure receiving surface is more assuredly applied to each portion of the pressure receiving portion, which can more assuredly reduce the shearing force to be generated in the die case at the time of extrusion .
  • the shearing force to be generated at the portion can be more assuredly reduced, which can more assuredly improve the strength of the die against the pressing force of the metallic material.
  • the extrusion die for a metallic material as recited in the aforementioned Item [13], since a plurality of the portholes are arranged in a peripheral direction, the metallic material can be evenly introduced in both the die cases from the peripheral direction, resulting in smooth supply to the extrusion hole, which enables more steady extrusion.
  • the inclination angle of the axis of the porthole is set to a predetermined angle, the metallic material can be supplied from the porthole to the extrusion hole in a stable manner.
  • an aluminum or aluminum alloy extruded article can be produced.
  • a tubular member having a circular cross-sectional configuration can be assuredly produced.
  • the pressing force of the metallic material against the pressure receiving surface can be more assuredly dispersed in a balanced manner , resulting in more assuredly improved strength against the metallic material pressing force.
  • Fig. 1 is a perspective view of an extrusion die according to a first embodiment of the present invention
  • Fig. 2 is a perspective cutout view of the extrusion die according to the first embodiment
  • Fig. 3 is an exploded perspective view of the extrusion die according to the first embodiment
  • Fig .4 is a cross-sectional view of the extrusion die according to the first embodiment
  • Fig. 5 is another cross-sectional view of the extrusion die according to the first embodiment
  • Fig .6 is an enlarged cutout perspective view showing the inside of the extrusion die according to the first embodiment
  • Fig.7 is a perspective cutout view showing a principal portion of an extruder to which the extrusion die of the first embodiment is applied;
  • Fig. 8 is a cross-sectional view showing the extrusion die of the first embodiment and its vicinity in an extruder
  • Fig.9 shows another cross-sectionalview showing the extrusion die of the first embodiment and its vicinity in the extruder
  • Fig. 10 is a perspective view showing a multi-bored hollow member extruded with an extruder according to the first embodiment
  • Fig. 11 is an enlarged front cross-sectional view showing the multi-bored hollow member extruded with the extruder of the first embodiment ;
  • Fig. 12 is a perspective view of an extrusion die according to a second embodiment of the present invention.
  • Fig. 13 is a perspective cutout view of the extrusion die according to the second embodiment
  • Fig. 14 is an exploded perspective view of the extrusion die according to the second embodiment
  • Fig. 15 is a perspective view of an extrusion die according to a first modified embodiment of the present invention
  • Fig. 16 is a perspective view of an extrusion die according to a second modified embodiment of the present invention
  • Fig. 17 is a perspective view of an extrusion die according to a third modified embodiment of the present invention.
  • Fig. 18A is an exploded perspective view showing a porthole die as a conventional extrusion die
  • Fig. 18B is an exploded perspective view showing a spider die as a conventional extrusion die.
  • Fig. 18C is a perspective view showing a bridge die as a conventional extrusion die.
  • Figs. 1 to 5 show an extrusion die 10 according to a first embodiment of this invention. As shown in these drawings, this extrusion die 10 is designed to extrude a multi-bored hollow member 60 shown in Figs. 10 and 11.
  • the hollow member 60 is a metal member which is an example of an aluminum or aluminum alloy heat exchanging tube 60 in this embodiment .
  • This hollow member 60 is a member to be employed in a heat exchanger, such as, e.g., a condenser for car air-conditioners, and has a flattened configuration.
  • the hollow portion 61 of this hollow member 60 is extended in the tube length direction and divided into a plurality of heat exchanging passages 63 by a plurality of partitions 62 arranged in parallel with each other. These passages 63 are extended in the tube length direction and arranged in parallel with each other.
  • a direction with which a tube length direction perpendicularly intersects and along which the passages 63 are arranged will be referred to as a "width direction, " andadirectionwithwhicha tube lengthdirection perpendicularly intersects and with which the width direction perpendicularly intersects will be referred to as a “height direction (thickness direction) .
  • the "upstream side” with respect to the extrusion direction of a metallic billet will be referred to as a “rear side”
  • the “downstream side” thereof will be referred to as a "front side.
  • the extrusion die 10 of this embodiment is equipped with a male die case 20, a female die case 25, a male die 30 , afemale die 40 , andaflowcontrolplate 50.
  • the die case is constituted by the male die case 20 and the female die case 25.
  • the male die case 20 is disposed at the upstream side (rear side) with respect to the female die case 25. This male die case
  • both the die cases 20 and 25 are coupled with each other.
  • the male die case 20 is formed into an approximately dome-shaped configuration having a pressure receiving portion 21 to which a billet is to be pressed and a circular press-fitting connecting portion 21a integrally formed at the front surface side (i.e. , front surface side periphery) of the pressure receiving portion 21. Furthermore, in the male die case 20 , the external peripheral surface (rear surface) of the pressure receiving portion 21 constitutes abillet pressure receiving surface 22 as ametallicmaterialpressure receiving surface.
  • This pressure receiving surface 22 is formed into a hemispherical convex configuration ( configurations other than the spherical convex configuration will be referred in the following modified embodiments) .
  • a male die holding slit 23 communicated with the internal hollow portion (welding chamber 12) is formed along the axial center Al of the male die case 20.
  • This male die holding slit 23 is formed into a flat rectangular cross-sectional configuration corresponding to the cross-sectional configuration of the male die 30. Furthermore, as best shown in Fig. 5, at both side portions of the rear end side of the male die holding slit 23, engaging stepped portions 23a and 23a for engaging the male die 30, which will be mentioned later, is formed.
  • each porthole 24 has an elongated cross-sectional shape extending along the peripheral direction of the pressure receivingportion 21 and arranged at regular intervals in the peripheral direction. Furthermore, as best shown in Fig. 4, each porthole 24 is formed such that the axial center A2 of the porthole 24 approaches the axial center Al of the pressure receiving portion 21 as it advances toward the downstream side (front side) andintersectswiththe axial centerAl of thepressurereceiving portion 21 in an inclined state.
  • the detail structure, such as, e.g. , the inclination angle ⁇ of this porthole 24, will be detailed later.
  • the female die case 25 is formedindependently with respect to the male die case 20 and has a diameter larger than the diameter of the male die case 20.
  • a press-fitting dented portion 25a into which the press-fitting connecting portion 21a of the male die case 20 can be forcibly fitted is provided.
  • This press-fitting dented portion 25a has an internal diameter smaller than the external diameter of the press-fitting connecting portion 21a and a depth corresponding to the protruded length of the press-fitting connecting portion 21a. The difference between the diameter of the press-fitting dented portion 25a and that of the press-fitting connecting portion 21a, etc., will be explained later.
  • a female die holding dented portion 26 is formed in the central portion of the press-fitting dented portion 25a of the female die case 25, a female die holding dented portion 26 is formed. Formed in the bottom wall center of the holding dented portion 26 is a communication hole 26b.
  • two key grooves 27 and 27 are formed so as to extend in the axial direction.
  • the front end portion constitutes a mandrel 31. As shown in Figs. 4 to 6 , the front end portion of the mandrel
  • the 31 is configured to form hollow portion 61 and has a plurality of passage forming protruded portions 33 each corresponding to each passage 63 of the hollow member 60. These plural passage forming protruded portions 33 are arranged in line along the widthwise direction of the mandrel 31 at certain intervals. Each gap formed between adjacent passage forming protruded portions 33 constitutes a partition forming groove 32 for forming the partition 62 of the hollow member 60.
  • engaging protrusions 33a and 33a corresponding to the aforementioned engaging stepped portions 23a and 23a of the male die holding slit 23 formed in the male die case 20 are integrally provided so as to protrude sideways .
  • This male die 30 is inserted into the male die holding slit 23 of the aforementioned male die case 20 from the side of the billet pressure receiving surface 22 and fixed therein.
  • the engaging protrusions 33a and 33a of the male die 30 are engaged with the engaging stepped portions 23a and 23a in the male die holding slit 23 to be positioned.
  • the mandrel 31 of the male die 30 is held in a state in which the mandrel 31 of the male die 30 is forwardly protruded from the male die holding slit 23 by a predetermined amount .
  • the basal end face (rear end face) of the male die 30 is formed so as to constitute a part of the spherical surface forming the billet pressure receiving surface 22 of the male die case 20, so that the basal end face (rear end face) of the male die 30 and the billet pressure receiving surface 22 form a prescribed smooth convex spherical surface.
  • the female die 40 is cylindrical in configuration, and has, at its both sides of the peripheral surface, key protrusions 47 and 47 parallel to the central axis and corresponding to the keyways 27 and 27 of the female die holding hole 26 in the female die case 25.
  • the female die 40 is provided with a die hole (bearing hole 41) opened to the rear end face side and formed corresponding to the mandrel 31 of the male die 30 and a relief hole 42 communicated with the die hole 41 and opened to the front end face side.
  • the die hole 41 is provided with an inwardly protruded portion along the inner peripheral edge portion so that the outer peripheral portion of the hollow member 60 can be defined.
  • the relief hole 42 is formed into a tapered shape gradually increasing the thickness (height) toward the front end side (downstream side) and opened at the downstream side.
  • the female die 40 is accommodated in the female die holding dented portion 26 of the female die case 25.
  • the lower opening portion of the relief hole 42 of the female die 40 is disposed so that the lower opening portion is fitted in conformity with the communication hole 26b formed in the bottom surface of the die holding dented portion 26, so that the relief hole 42 of the female die 40 is communicated with the lower side
  • the key protrusions 47 and 47 of the female die 40 are inserted into the keyways 27 and 27 of the female die case 25 and engaged therewith to be positioned with respect to the circumference direction about the central axis of the female die 40.
  • the flowcontrolplate 50 is formed into around shape in external periphery corresponding to the cross-sectional shape of the female die holding dented portion 26 of the female die case 25.
  • a central through-hole 51 is formed in the center of the flow control plate 50.
  • the flow control plate 50 has, at its both sides of the external peripheral edge portion, key protrusions 57 and 57 corresponding to the keyways 27 and 27 of the female die 40 are formed.
  • the flow control plate 50 is disposed on the female die 40 with the flow control plate 50 accommodated in the female die holding dented portion 26. In this accommodate state, the key protrusions
  • the male die case 20 mounting the male die 30 will be assembled to the female die case 25 mounting the female die 40 and the flow control plate 50 as follows.
  • both the die cases 20 and 25 are connected each other with each other's axis aligned so that the male die case 20 is restrained from its periphery by the female die case 25.
  • This connection causes the positioning of the mandrel 31 of the male die 30 and the die hole (bearing hole) 41 of the female die 40 in the central through-hole 51 of the flow control plate 50. Furthermore, as shown in Figs. 4 to 6 , the mandrel 31 of the male die 30 is disposed within the die hole 41 of the female die 40 , which forms a flat circular extrusion hole 11 between the mandrel 31 and the die hole 41. This extrusion hole 11 is formed into a cross-sectional configuration of the hollow member 60 to be formed by the widthwisely arranged plural partition forming grooves 32 of the mandrel 31.
  • the external diameter of the press-fitting connecting portion 21a is formed to be slightly lager than the internal diameter of the press-fitting dented portion 25a.
  • the diameterdirection compression rate (press-fitting margin) of the press-fitting connecting portion 21a with respect to the press-fitting dented portion 25a falls within the following specific range.
  • the press-fitting margin P is represented by the rate (percentage) of the diameter difference (L1-L2) between the external diameter Ll and the internal diameter L2 with respect to the internal diameter L2 where Ll is the external diameter of the press-fitting connecting portion 21a and L2 is the internal diameter of the press-fitting dented portion 25a.
  • the press-fitting margin P can be obtained by the following expression
  • the aforementioned press-fitting margin P is set to 1 to 8%, more preferably 3 to 6%.
  • the male die case 20 is restrained by the female die case 25 with appropriate compression force, improving the strength of the male die case 20, i.e. , the strength of the billet pressure receiving portion 21 , which in turn can improve the resistance to cracking and the durability.
  • the press-fitting margin P is too small, the male die case 20 cannot be sufficiently restrained by the female die case 25, causing deteriorated strength of the male die case 20, which in turn may result in deteriorated durability.
  • the press-fitting margin P is too large, the restraining force of the male die case 20 by the female die case 25 becomes too strong to deteriorate the strength of the male die case 20, which in turn may cause deteriorated durability.
  • the press-fitting margin P is even along the entire periphery.
  • the press-fitting margin P can be changed within the aforementioned specific range.
  • shrink fitting such as, e.g., thermal insert or cooling fit
  • shrink fitting can be employed in this invention.
  • the outlet side end portions (front end portions) of the pair of portholes 24 and 24 are disposed so as to face the extrusion hole 11.
  • the axial center A2 of each porthole 24 is set to be inclined with respect to the axial center Al of the male die case 20.
  • the inclination angle ⁇ of the axial center A2 of the porthole 24 with respect to the axial center Al of the male die case 20 is set to 3 to 35° , more preferably 5 to 30° , still more preferably 5 to 25° .
  • the billet pressure receiving surface 22 of the male die case 20 has a configuration constituted by a convex spherical surface of a 1/6 sphere to a 4/6 sphere.
  • the billet pressure receiving surface 22 is formed into the aforementioned specific convex spherical configuration, the pressing force of a metal billet can be received by the billet pressure receiving surface 22 in a dispersed manner, resulting in sufficient strength, which in turn can extend the die life. That is, when a billet is pressed against the pressure receiving surface 22 having the specific convex spherical configuration, compressing force toward the center of the pressure receiving portion 21 is more assuredly applied to each portion of the pressure receiving surface 22.
  • the shearing force generated at the position of the die case 20 exposed to the hollow portion of the die case 20 which is aportionwhere a largest shearing forcewill be generated, can be reduced assuredly.
  • the strength of the die 10 against the pressing force of the billet can be improved more assuredly.
  • it also makes it possible to simplify the die configuration, reduce the size and weight, and also attain the cost reduction .
  • the billet pressure receiving surface 22 is formed into a configuration constituted by a convex spherical surface of a sphere smaller than a 1/6 sphere, such as, e.g., a convex spherical surface constituted by a 1/8 sphere, sufficient strength against the billet pressing force cannot be obtained, which may cause deteriorated die life due to generation of cracks.
  • the billet pressure receiving surface 22 is formed into a configuration constituted by a convex spherical surface of a sphere exceeding a 4/6 sphere, such as, e.g. , a convex spherical surface configuration of a 5/6 sphere, the cost may be increased due to the complicated configuration.
  • the sphere with a ratio such as, e.g.. a 1/8 sphere, a 1/6 sphere, or a 4/6 sphere, is defined by a partial sphere obtainedby cutting aperfect spherewith aplane perpendicular to the central axis of the perfect sphere .
  • an "n/m sphere ( “m” and “n” are natural numbers, and n ⁇ m) " is defined by a partial sphere obtained by cutting a perfect sphere with a plane perpendicular to the central axis of the perfect sphere at a position where a distance from a surface of the perfect sphere to an inner position of the perfect sphere on the central axis (diameter) is n/m where the length of the central axis (diameter) of the perfect sphere is "1.”
  • the inner side surface 24a and the outer side surface 24b among the inner periphery of the porthole 24 are arranged approximately in parallel with each other and also approximately in parallel to the central axis A2 of the porthole 24. Furthermore, the inner side surface 24a and the outer side surface 24b of the porthole inner periphery are constituted as an inclined surface (tapered surface) inclined to the central axis Al of the male die case 20, respectively.
  • the extrusion die 10 having the aforementioned structure is set in an extruder as shown in Figs . 7 to 9. That is , the extrusion die 10 of this embodiment is set to a container 6 with the extrusion die 10 fixed in the die installation hole 5a formed in the center of a plate 5. The extrusion die 10 is fixed by the plate 5 in a direction perpendicular to the extrusion direction and also fixed by a backer (not illustrated) in the extrusion direction.
  • a metal billet (metallic material) such as, e.g., an aluminum billet inserted in the container 6 is pressed in the right direction (extrusion direction) in Fig. 7 via a dummy block 7.
  • the metal billet is pressed against the billet pressure receiving surface 22 of the male die case 20 constituting the extrusion die 10 to be plastically deformed.
  • the metallic material passes through the pair of portholes 24 and 24 while being plastically deformed and then reaches the welding chamber 12 of both the die cases 20 and 25.
  • the material is forwardly extruded through the extrusion hole 11 into a cross-sectional configuration corresponding to the opening configuration of the extrusion hole 11.
  • a metal extruded article (hollow member 60) is manufactured.
  • the billet pressure receiving surface 22 is formed into a convex spherical configuration, when the metal billet is pressed against the billet pressure receiving surface 22, the pressing force can be received by the convex spherical surface in a dispersed manner. Therefore, the pressing force to be applied to each portion of the billet pressure receiving surface 22 in the direction of a normal line can be reduced, thereby increasing the strength against the pressing force of the metallic material, which results in sufficient durability.
  • the portholes 24 for introducing material are formed in the external peripheryof the pressure receivingportion 21 and the front end wall portion of the pressure receiving portion 21 is formed integrally and continuously in the peripheral direction . The existence of this continued peripheral wall portion can increase the strength of the male die case 20, which in turn can further increase the strength of the entire extrusion die .
  • the strength of the male die case 20 can be increased, which in turn can further increase the strength of the entire extrusion die.
  • the portholes 24 and 24 are formed at positions away from the central axis Al of the male die case 20, i.e., at the periphery of the pressure receiving portion 21, and the central axis A2 of each porthole 24 is inclined with respect to the central axis Al of both the die cases 20 and 25 so as to gradually approach the central axis Al of the male die case 20 toward the downstream side. Therefore, the metallic material passing through the portholes 24 and 24 can be stably extruded while being smoothly introduced to the axial center Al , i.e., the extrusion hole 11. Furthermore, in this embodiment, since the downstream side end portions (outlets) of the portholes 24 and 24 are faced toward the extrusion hole 11, the metallic material can be more smoothly introduced to the extrusion hole 11.
  • the metallic material can be more smoothly introduced into the extrusion hole 11 in a stable manner. Accordingly, the metallicmaterial is extrudedwhile evenly passing through the entire area of the extrusion hole 11 in a well-balanced manner, to thereby obtain a high quality extruded hollow member 60.
  • metallic material can be introduced into the entire region of the extrusion hole 11 in a well-balanced manner, which can further improve the quality.
  • the length of die life was extended about three times as compared with a conventional one.
  • the extrusion limit speed can be raised considerably.
  • the upper limit of the extrusion speed was 60 m/min.
  • the upper limit of the extrusion speed can be raised up to 150 m/min, i.e. , the extrusion limit speed can be raised about 2.5 times, and therefore the productive efficiency can be further improved.
  • Figs. 12 to 14 show an extrusion die 10 according to a second embodiment of the present invention.
  • this extrusion die 10 of this second embodiment is greatly different from the extrusion die 10 of the first embodiment as follows. That it, in the first embodiment, the die 10 is configured to extrude a flat multi-bored tubular member. On the other hand, in the second embodiment, the die 10 is configured to extrude a tubular member circular in cross-section.
  • the extrusion die 10 of the second embodiment includes a die case consisting of a male die case 20 and a female die case 25, a male die 30 having a mandrel 31 circular in cross-section, a female die 40 having a die hole 41 circular in cross-section, and a flow control plate 50.
  • the die holding hole 23 of the male die case 20 is formed into a columnar configuration corresponding to the male die 30.
  • a total of three portholes 24 are formed in the male die case 20 at equal circumferential intervals.
  • both the die cases 20 and 25 are fixedly coupled with each other using connecting rods 15 in a state in which the male die 30 is inserted the die holding hole 23 of the male die case 20 and the female die 40 and the flow control plate 50 are accommodated within the die holding dented portion 26 of the female die case 25.
  • the mandrel 31 of the male die 30 is disposed inside the die hole 41 of the female die 40 to thereby form a circular extrusion hole 11 between the mandrel 31 and the die hole 41.
  • the other structure of the extrusion die 10 of this second embodiment is substantially the same as the structure of the extrusion die 10 of the first embodiment. Accordingly, the cumulative explanation will be omitted by allotting the same or corresponding reference numeral to the same or corresponding portion.
  • This extrusion die 10 of this second embodiment is set to an extruder as explained in the first embodiment shown in Fig. 7 to produce an extruded tubular member circular in cross-section.
  • a male die case 20 having a semispherical pressure receiving portion 21 was exemplified.
  • the configuration of the pressure receiving portion 21 of the male die case 20 is not specifically limited.
  • the present invention can be applied to a male die case 20 having a partial spherical configuration, such as, e.g. , a 1/6 - 4/6 spherical configuration.
  • the configuration of the pressure receiving portion 21 of the male die case 20 is not limited to a spherical configuration, but can be, for example, a polyhedral configuration, such as, a sixteen-sided pyramid configuration, as shown in Fig. 15.
  • the configuration can be, for example, a circumferentially arranged polyhedral configuration in which a plurality of side surfaces are arranged in the circumferential direction, such as, a pyramid configuration, an axially arranged polyhedral configuration in which a plurality of side surfaces are arranged in the axial direction, or a polyhedral configuration in which the circumferentially arranged polyhedral configuration and the axially arranged polyhedral configuration are combined.
  • each side surface of the polyhedron is not limited to a flat surface, but can be a curved surface.
  • the pressure receiving portion 21 of the male die case 20 can be formed to have a semi-elliptical configuration in side view obtained by dividing an elliptical configuration by a line perpendicular to the minor axis and an elliptical or oval configuration as seen from the axial direction of the male die case 20 (as seen from the upstream side of the extrusion direction) . Furthermore, in the present invention, as shown in Fig.
  • the pressure receiving portion 21 of the male die case 20 can be formed to have a semi-elliptical or semi-oval configuration in side view obtained by dividing an elliptical configuration by a line perpendicular to the major axis and having a protrusion dimension along the axial direction of the male die case 20 longer than the radius dimension along a direction perpendicular to the axial direction.
  • the die case is divided into two members , i.e., the male die and the female die .
  • the present invention is not limited to the above, and can allow a die case divided into three or more members .
  • the explanation was directed to the case in which only a single extrusion die is set in a container.
  • the present invention is not limited to the above.
  • the extruder according to the present invention it can be configured such that two or more extrusion dies are set in a container.
  • the explanation was directed to the case in which a flat multi-bored tubular member or a round tubular member is extruded.
  • the configuration of the extruded article is not specifically limited.
  • the explanation was directed to the case in which the male die case 20 and the male die 30 are formed separately.
  • the present invention is not limited to the above, and can be applied to the case in which the male die 30 is integrally formed to the male die case 20.
  • the female die 40 and the female die case 25 can be integrally formed, or the flow control plate 50 and the female die case 25 can be integrally formed, or the flow control plate 50 and the female die 40 are integrally formed. In the case of integrally forming a die or case as mentioned above, the processing cost can be reduced.
  • (basal end face) of the male die 30 is formed as a part of the convex surface (spherical surface) corresponding to the billet pressure receiving surface 22 of the pressure receiving portion 21 and that the rear end face of the male die 30 and the billet receiving surface 22 constitute a desired smooth convex surface (spherical surface) .
  • the configuration of the rear end face (basal end face) of the male die 30 is not limited to the above, and can be, for example, formed into the following configuration. That is, in the present invention, in cases where the surface area of the rear end face of the male die 30 is, for example, 1/3 or less of the surface area of the billet pressure receiving surface 22 of the die 10, the rear end face of the male die 30 can be constituted by a part of a columnar external peripheral surface in which the rear end face is circular corresponding to the billet pressure receiving surface 22 in the width direction (longitudinal direction) and straight in the thickness direction (direction perpendicular to the longitudinal direction) because of the following reasons.
  • Example 1 As shown in Table 1, an extrusion die 10 for forming a flat multi-bored tubular member, which was the same as in the first embodiment shown in Figs. 1 to 6 , was prepared.
  • the pressure receiving portion 21 was formed into a 1/2 spherical configuration (semispherical configuration) having a radius of 30 mm.
  • the male die case 20 had a pair of portholes 24 and 24 and the inclination angle ⁇ of the axis A2 of each porthole 24 with respect to the axis Al of the male die case 20 was adjusted to 10° .
  • the press-fitting margin P between the press-fitting connecting portion 21a of the male die case 20 and the press-fitting dented portion 25a of the female die case 25 was adjusted to 0.5%.
  • the male die 30 was adjusted to 2.0 mm in height of mandrel 31, 19.2 mm in width of mandrel 31, 1.2 mm in height of passage forming protruded portion 33, 0.6 mm in width of passage forming protruded portion 33 , and 0.2 mm in width of partition forming groove 32.
  • the female die 40 was adjusted to 1.7 mm in height of die hole 41 and 20.0 mm in width of die hole 41.
  • the extrusion die 10 was set to an extruder similar to the extruder shown in the embodiment andextrusion was performed to produce a flat multi-bored tubular member (heat exchanging tubular member) as shown in Figs. 10 and 11.
  • the die life (the amount (tons) of introduced material until cracks or wear occurs ) was measured, and the die life limiting factors were investigated.
  • the result and the press-fitting margin are also shown in Table 1.
  • An extrusion die 10 the same as in Example 1 was prepared except that the press-fitting margin P was set to 1.0% as shown in Table 1.
  • An extrusion die 10 the same as in Example 1 was prepared except that the press-fitting margin P was set to 3.0% as shown in Table 1.
  • An extrusion die 10 the same as in Example 1 was prepared except that the press-fitting margin P was set to 6.0% as shown in Table 1.
  • An extrusion die 10 the same as in Example 1 was prepared except that the press-fitting margin P was set to 8.0% as shown in Table 1.
  • An extrusion die 10 the same as in Example 1 was prepared except that the press-fitting margin P was set to 9.0% as shown in Table 1.
  • This extrusion die was set to an extruder in the same manner as mentioned above and extruded an extruded article. Then, the same evaluation was performed.
  • Example 1 although cracks in the male die were die life limiting factors, the die life was at least longer than that of Comparative
  • Example 1 In Example 2 , although minute cracks were generated in the male die, the wear of the male die became main die life limiting factors, and therefore the die life was longer than that of Example
  • Example 3 the male die wear was the main die life limiting factor and the die life was sufficiently long.
  • Example 6 although cracks in the male die case were the main die limiting factor, the die life was at least longer than that of Comparative Example 1.
  • Example 2-5 the die having the press-fitting margin of 1 to 8% (Example 2-5) could secure sufficient strength and therefore the porthole could be enlarged in the same stress value of the die case with respect to the pressing force of the metallic material. Accordingly, in Example 2-5, the extrusion resistance was small, resulting in reduced processing heat generation, which in turn could extend the die life. Especially, in the die in which the press-fitting margin was 3 to 6% (Example 3, 4), the die rigidity improving effects could be remarkably enhanced, resulting an increased porthole size, which in turn could extend the die life dramatically.
  • an extrusion die 10 for forming a tubular member round in cross-section which was the same as in the second embodiment shown in Figs. 12 to 14, was prepared.
  • the pressure receiving potion 21 was formed into a 1/2 spherical configuration ( semispherical configuration) having a radius of 50 mm.
  • the male die case 20 had three portholes 24, 24 and 24 arranged at equal circumferential intervals , and the inclination angle ⁇ of the axis A2 of each porthole 24 with respect to the axis Al of the male die case 20 was adjusted to 15° .
  • the mandrel 31 of the male die 30 was round in cross-section and 30 mm in diameter.
  • the die hole 41 of the female die 40 was round in cross-section and 32 mm in diameter.
  • This extrusion die 10 was set in the extruder similar to the extruder of the aforementioned embodiment shown in Figs. 7 to 9 , and a tubularmember round in cross-sectionwas producedbyperforming extrusion .
  • the extrusion load at the time of the extrusion was 1 , 400 x 10 4 N.
  • Example 8 As shown in Table 1, an extrusion die 10 similar to the above extrusion die except that the porthole inclination angle ⁇ was adjusted to 3.0° was prepared.
  • extrusion was performed in the same manner as mentioned above and the same evaluation was performed.
  • the extrusion load at the time of the extrusion was 1,450 x 10 4 N.
  • extrusion was performed in the same manner as mentioned above and the same evaluation was performed.
  • the extrusion load at the time of the extrusion was 1,500 x 10 4 N.
  • extrusion was performed in the same manner as mentioned above and the same evaluation was performed.
  • the extrusion load at the time of the extrusion was 1,650 x 10 4 N.
  • extrusion was performed in the same manner as mentioned above and the same evaluation was performed.
  • the extrusion load at the time of the extrusion was 1,700 x 10 4 N.
  • extrusion was performed in the same manner as mentioned above and the same evaluation was performed.
  • the extrusion load at the time of the extrusion was 1,750 x 10 4 N.
  • an extrusion die 10 similar to the above extrusion die except that the porthole inclination angle ⁇ was adjusted to 38.0° was prepared.
  • An extrusion was performed in the same manner as mentioned above and the same evaluation was performed.
  • the extrusion load at the time of the extrusion was 1,850 x 10 4 N.
  • a bridge type extrusion die was prepared.
  • the diameter was 100 mm
  • the height (lengthalong the extrusion direction) was 80 mm
  • the occupation area was the same as that of the extrusion die of each example
  • the billet pressure receiving surface was formed into a flat surface perpendicular to the extrusion direction.
  • the inclination angle ⁇ of the metallic material introducing directionwithrespect to the axial center of the die was substantially 0° .
  • the other structure was the same as that of the aforementioned Examples 7 to 13.
  • This extrusion die was set to an extruder in the same manner as mentioned above and extruded an extruded article. Then, the same evaluation was performed.
  • the extrusion load at the time of the extrusion was 1,600 x 10 4 N.
  • Example 7 Although cracks in the male die were a die life limiting factor, the die life was at least longer than that of Comparative Example 2.
  • Example 8 and Example 12 although minute cracks were generated in the male die, the wear of the male die became the main die life limiting factor, and therefore the die life was sufficiently long.
  • Example 9 to 11 the male die wearing was the main die life limiting factor, and the die life was sufficiently long.
  • Example 7-13 as compared with Comparative Example 2, the die life was long.
  • the dies each having a porthole inclination angle of 3.0 to 35.0° (Example 8 to 12) were long in die life.
  • the porthole inclination angle ⁇ becomes smaller, the extrusion load decreases. Therefore, it is considered to be preferable that the porthole inclination angle ⁇ is small except for the case in which an extruded article complicated in configuration, such as, e.g. , a flat multi-bored tube, is extruded.
  • a male die case 20 having a billet pressure receiving surface 22 constituted by an external surface (convex surface) of a 1/8 sphere with a spherical radius of 45.4 mm was prepared.
  • the diameter of this pressure receiving surface portion 21 was adjusted to 60 mm.
  • the male die case 20 had a pair of portholes 24 and 24 and the inclination angle ⁇ of the axis A2 of each porthole 24 with respect to the axis Al of the male die case 20 was adjusted to 25° .
  • the male die 30 was adjusted to 2.0 mm in height of mandrel
  • the female die 40 was adjusted to 1.7 mm in height of die hole 41 and 20.0 mm in width of die hole 41.
  • the press-fitting margin P between the press-fitting connecting portion 21a of the male die case 20 and the press-fitting dented portion 25a of the female die case 25 was adjusted to 1.0%.
  • the extrusion die 10 was set to an extruder similar to the extruder shown in the aforementioned embodiment, and extrusion was performed to produce a tubular member (heat exchanging tubular member 60) having a cross-sectional configuration corresponding to the extrusion hole 11 between the male die 30 and the female die 40. Then, the die life (ton/die) was measured. The result is shown in Table 3. ⁇ Example 15 >
  • a hollow member was produced by performing extrusion in the same manner as mentioned above.
  • a hollow member was produced by performing extrusion in the same manner as mentioned above.
  • a hollow member was produced by performing extrusion in the same manner as mentioned above.
  • a hollow member was produced by performing extrusion in the same manner as mentioned above.
  • the die life could be extended and the die production cost could be reduced.
  • the die production cost could be kept low while keeping sufficiently long die life, which was an excellent result.
  • Example 18 Comparing with the die according to Example 17, in the die in which the billet pressure receiving surface 22 was formed into a convex spherical surface of a 4/6 sphere (Example 18), the die production cost was increased, which was an inferior result among
  • the extrusion die for a metallic material according to the present invention can be used in manufacturing an extruded product such as a hollow tube including, e.g. , a heat exchanging tube for use in an automobile air-conditioning gas cooler, evaporator, or household hot-water supplying device.
  • the term "preferably” is non-exclusive andmeans “preferably, but not limited to.”
  • means-plus-function or step-plus-function limitations will only be employed where for a specific claim limitation all of the following conditions are present in that limitation: a) "means for” or “step for” is expressly recited; b) a corresponding function is expressly recited; and c) structure, material or acts that support that structure are not recited.
  • the terminology "present invention” or “invention” may be used as a reference to one or more aspect within the present disclosure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)

Abstract

Dans des modes de réalisation préférés, l'invention concerne une filière d'extrusion de matière métallique permettant d'obtenir un article extrudé de haute qualité tout en assurant une résistance et une durabilité suffisantes. La filière est pourvue d'un carter de moule mâle (20) présentant une partie de réception de pression (21), un carter de moule femelle (25), un moule mâle (30) agencé dans le carter de moule mâle (20), et un moule femelle (40) agencé dans le carter de moule femelle (25). La partie de réception de pression (21) est formée selon une configuration convexe faisant saillie vers l'arrière, et une ouverture pour l'introduction d'une matière métallique est formée au niveau de la périphérie extérieure de la partie de réception de pression. Une partie de liaison par ajustement serré (21a) est formée à l'avant du carter de moule mâle (20) et une partie dentée d'ajustement serré (25a) est formée à l'arrière du carter de moule femelle (25). La partie de liaison par ajustement serré (21a) est ajustée dans la partie dentée d'ajustement serré (25a) de manière à ainsi relier les carters de moules (20, 25), le carter de moule mâle (20) étant limité sur sa périphérie par le carter de moule femelle (25).
PCT/JP2007/063945 2006-07-07 2007-07-06 Filière d'extrusion de matière métallique Ceased WO2008004714A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP07790726A EP2040861A4 (fr) 2006-07-07 2007-07-06 Filière d'extrusion de matière métallique
US12/307,836 US20090293570A1 (en) 2006-07-07 2007-07-06 Extrusion die for metallic material

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2006187944 2006-07-07
JP2006-187944 2006-07-07
US88705407P 2007-01-29 2007-01-29
US60/887,054 2007-01-29
JP2007-56656 2007-03-07
JP2007056656A JP5053660B2 (ja) 2006-07-07 2007-03-07 金属材料の押出成形用ダイス

Publications (1)

Publication Number Publication Date
WO2008004714A1 true WO2008004714A1 (fr) 2008-01-10

Family

ID=38894668

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/063945 Ceased WO2008004714A1 (fr) 2006-07-07 2007-07-06 Filière d'extrusion de matière métallique

Country Status (3)

Country Link
US (1) US20090293570A1 (fr)
EP (1) EP2040861A4 (fr)
WO (1) WO2008004714A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2049277A4 (fr) * 2006-10-03 2010-03-17 Showa Denko Kk Filière d'extrusion de matériau métallique
KR102815758B1 (ko) * 2019-08-05 2025-06-04 삼성전자주식회사 압출 장치 및 이를 이용한 알루미늄 모세관을 제조하는 방법

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4946707B1 (fr) * 1969-12-08 1974-12-11
JPH0199716A (ja) * 1987-10-13 1989-04-18 Showa Alum Corp 多穴管押出用ダイス
JPH06142755A (ja) * 1992-11-05 1994-05-24 Nippondenso Co Ltd 多穴管押出用ダイスおよびこの多穴管押出用ダイスを用いて製造された多穴管
JP2003200212A (ja) * 2001-10-23 2003-07-15 Showa Denko Kk 微細多穴管押出用ダイスおよびこのダイスに用いられるマンドレル、ならびに前記ダイスを用いて製造された多穴管

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE99405C (fr) *
US3126096A (en) * 1964-03-24 Hydrostatic extrusion system
US2366344A (en) * 1940-10-21 1945-01-02 Aluminum Co Of America Extrusion
US2276468A (en) * 1940-11-19 1942-03-17 Aluminum Co Of America Extrusion die
US2673645A (en) * 1951-06-11 1954-03-30 Moczik Ernest Multiple hole extrusion die
US2971644A (en) * 1955-02-11 1961-02-14 Cefilac Extrusion dies
US3080051A (en) * 1955-10-10 1963-03-05 Demag Ag Fa Extrusion apparatus
US3112828A (en) * 1959-02-09 1963-12-03 Fred L Hill Extrusion dies
US3203215A (en) * 1961-06-05 1965-08-31 Aeroprojects Inc Ultrasonic extrusion apparatus
US3306089A (en) * 1964-02-24 1967-02-28 Barogenics Inc Control of stresses during shock-aided hydrostatic extrusion
US3343388A (en) * 1964-06-02 1967-09-26 Barogenics Inc Rapid extrusion devices
US3364707A (en) * 1965-02-16 1968-01-23 Dow Chemical Co Extrusion forming member and method
DE2414178A1 (de) * 1974-03-23 1975-10-09 Aluminium Walzwerke Singen Verfahren zur herstellung von verbundprofilen sowie vorrichtung zu dessen durchfuehrung
JPS6021121A (ja) * 1983-07-15 1985-02-02 Inst Tech Precision Eng アルミ押出しダイスとその製造方法
GB2221179B (en) * 1988-07-19 1992-08-19 Atomic Energy Authority Uk An improved die assembly
JPH0681644B2 (ja) * 1989-01-13 1994-10-19 三協アルミニウム工業株式会社 金属材料の押出成形用ダイス
US5263352A (en) * 1992-02-27 1993-11-23 Yugen Kaisha Yano Engineering Combination die assembly and a method of extrusion using the die assembly
US5337593A (en) * 1992-04-17 1994-08-16 Yugen Kaisha Yano Engineering Extrusion die and an extrusion method using same
DK0656235T3 (da) * 1993-12-01 1998-02-02 Sumitomo Light Metal Ind Hul ekstruderdyse til ekstrudering af et hult element af en zinkholdig aluminiumlegering
JPH09174141A (ja) * 1995-12-22 1997-07-08 Yano Eng:Kk 金属製中空材押出用ダイス
EP1446243B1 (fr) * 2001-10-23 2009-09-02 Showa Denko K.K. Matrice d'extrusion permettant de fabriquer un tube presentant des parties creuses et mandrin utilise avec ladite matrice d'extrusion
US20100199738A1 (en) * 2004-08-13 2010-08-12 Vip Tooling, Inc., (An Indiana Corporation) Modular extrusion die tools
US8104318B2 (en) * 2005-09-08 2012-01-31 Showa Denko K.K. Extrusion die for metallic material
JP5149517B2 (ja) * 2007-01-12 2013-02-20 昭和電工株式会社 押出成形用のダイス組付工具

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4946707B1 (fr) * 1969-12-08 1974-12-11
JPH0199716A (ja) * 1987-10-13 1989-04-18 Showa Alum Corp 多穴管押出用ダイス
JPH06142755A (ja) * 1992-11-05 1994-05-24 Nippondenso Co Ltd 多穴管押出用ダイスおよびこの多穴管押出用ダイスを用いて製造された多穴管
JP2003200212A (ja) * 2001-10-23 2003-07-15 Showa Denko Kk 微細多穴管押出用ダイスおよびこのダイスに用いられるマンドレル、ならびに前記ダイスを用いて製造された多穴管

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2040861A4 *

Also Published As

Publication number Publication date
EP2040861A4 (fr) 2010-03-17
US20090293570A1 (en) 2009-12-03
EP2040861A1 (fr) 2009-04-01

Similar Documents

Publication Publication Date Title
EP2116314B1 (fr) Matrice de moulage par extrusion de matériau métallique
EP1150088B1 (fr) Ensemble raccord / collecteur et méthode d'assemblage pour un échangeur de chaleur
US8104318B2 (en) Extrusion die for metallic material
JP4938500B2 (ja) 金属材料の押出成形用ダイス
EP2111934A1 (fr) Outil d'assemblage de matrice pour moulage par extrusion
EP2040861A1 (fr) Filière d'extrusion de matière métallique
US20100095731A1 (en) Extrusion die for metallic material
CN107120380A (zh) 阻尼器壳体及制造阻尼器壳体的方法
EP3067130B1 (fr) Silencieux
JP4938501B2 (ja) 金属材料の押出成形工具
JP5053664B2 (ja) 金属材料の押出成形用ダイス
JP5053660B2 (ja) 金属材料の押出成形用ダイス
US6351979B1 (en) Extrusion die
CN101522327B (zh) 用于金属材料的挤压模
JP5053663B2 (ja) 金属材料の押出成形用ダイス
JP4938504B2 (ja) 金属材料の押出成形用ダイス
JP4938506B2 (ja) 金属材料の押出成形用ダイス
JP2008023595A (ja) 金属材料の押出成形用ダイス

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07790726

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2007790726

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

NENP Non-entry into the national phase

Ref country code: RU

WWE Wipo information: entry into national phase

Ref document number: 12307836

Country of ref document: US