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WO2012085961A1 - Tuyau métallique, procédé et dispositif pour le traiter - Google Patents

Tuyau métallique, procédé et dispositif pour le traiter Download PDF

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Publication number
WO2012085961A1
WO2012085961A1 PCT/JP2010/007385 JP2010007385W WO2012085961A1 WO 2012085961 A1 WO2012085961 A1 WO 2012085961A1 JP 2010007385 W JP2010007385 W JP 2010007385W WO 2012085961 A1 WO2012085961 A1 WO 2012085961A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal pipe
mold
pipe
stress concentration
stress
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/JP2010/007385
Other languages
English (en)
Japanese (ja)
Inventor
小林直之
鳥岡宣男
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.)
Hirotec Corp
Original Assignee
Hirotec Corp
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
Application filed by Hirotec Corp filed Critical Hirotec Corp
Priority to EP10853382.9A priority Critical patent/EP2546005A4/fr
Priority to JP2012502373A priority patent/JP5734950B2/ja
Priority to CN201080028917.2A priority patent/CN102712031B/zh
Priority to PCT/JP2010/007385 priority patent/WO2012085961A1/fr
Priority to US13/381,497 priority patent/US20130269408A1/en
Publication of WO2012085961A1 publication Critical patent/WO2012085961A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D9/00—Bending tubes using mandrels or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/12—Shaping end portions of hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/08—Upsetting

Definitions

  • the present invention relates to a metal pipe formed such that the thickness of a certain part is thicker than that of another part, a processing method thereof, and a processing apparatus.
  • a part of an exhaust system of an internal combustion engine mounted on an automobile is made of a metal pipe.
  • the heat of the exhaust gas is repeatedly applied to the metal pipe, and stress concentration due to vibrations of the internal combustion engine and the vehicle body occurs at a joint portion of the metal pipe with other parts.
  • damage is likely to occur particularly in the joint portion of the metal pipe.
  • the thickness of the portion where stress is not concentrated that is, the portion that is difficult to break
  • the metal pipe itself becomes unnecessarily heavy, and even if the material is changed, the metal pipe itself The weight will be almost unchanged.
  • the thickness of the metal pipe where stress is likely to concentrate is made thicker than other parts, thereby preventing breakage and reducing the weight of the metal pipe. It is planned to make it easier.
  • a metal pipe having a uniform thickness is heated to a high temperature of about 1200 ° C. to reduce the deformation resistance, and then pressed in the axial direction using a die and a mandrel, so that A thick part is formed in the part.
  • Patent Document 1 since the metal pipe must be heated to a high temperature, there is a problem that it takes time to heat, the production efficiency is low, and the energy consumption during processing is large.
  • the present invention has been made in view of the above points, and the object of the present invention is to reduce the energy consumption of a metal pipe having a thick part in a part with high production efficiency and high accuracy. There is to be able to get while.
  • a stress concentration portion is provided at an intermediate portion in the axial direction of the metal pipe, and an axial pressure is applied to the metal pipe.
  • stress was concentrated in the stress concentration portion to cause deformation, and the thick portion was formed starting from this deformation.
  • the 1st invention is a processing method of the metal pipe which processes this metal pipe so that a part of axial direction of a metal pipe may become thick part compared with other parts
  • the above-mentioned metal pipe of the above-mentioned A stress concentration portion forming step for forming a stress concentration portion for concentrating stress when the metal pipe receives an axial pressure in the axial direction intermediate portion; and the metal pipe, After the pipe setting process for setting the outer mold that holds the outer peripheral surface of the metal, the stress concentration part forming process, and the pipe setting process, the inner mold is inserted into the metal pipe, and the inner mold and the outer mold are inserted.
  • a space for forming the thick part is provided between the mold and the metal pipe is subjected to an axial pressure to cause stress to concentrate in the stress concentration part and be deformed. Forming the thick part And it is characterized in that it comprises a degree.
  • the second invention is characterized in that, in the first invention, in the stress concentration portion forming step, a step portion is formed in the metal pipe, and the step portion is used as the stress concentration portion.
  • the third invention is characterized in that, in the second invention, in the stress concentration portion forming step, a step portion is formed by subjecting a metal pipe to tube expansion processing.
  • the stepped portion can be easily obtained by the tube expansion process.
  • a stress concentration portion forming device forms a stress concentration portion in the middle portion in the axial direction of the metal pipe, and the inner die is pushed in the axial direction of the metal pipe by the drive device.
  • the axial pressure was applied to the end of the metal pipe.
  • a metal pipe processing apparatus for processing a metal pipe so that a part of the metal pipe in the axial direction is thicker than other parts.
  • a stress concentration portion forming device for forming a stress concentration portion for concentrating stress when an axial pressure is applied to the intermediate portion in the axial direction; an outer mold for holding the outer peripheral surface of the metal pipe; and An inner mold configured to be inserted into a metal pipe and provided with a space for forming the thick portion between the outer mold and the end of the metal pipe; And a drive device that pushes the mold in the axial direction of the metal pipe to apply an axial pressure to the end of the metal pipe.
  • the metal pipe on which the stress concentration portion is formed is held in the outer mold, the inner mold is inserted into the metal pipe, and the axial force is applied to the end of the metal pipe by the driving device. It becomes possible to act. As a result, stress concentrates on the stress concentration portion of the metal pipe and deforms, and a thick portion is formed in the metal pipe between the outer mold and the inner mold with the deformation site as a starting point.
  • the inner mold is separated from the first mold inserted into a portion other than the portion forming the thick portion of the metal pipe, and the first mold, And a second mold that is inserted into a portion that forms a thick portion of the pipe-making pipe, and the second mold is driven by a driving device.
  • the second portion separated from the first mold is replaced with the thick portion of the metal pipe. It is inserted into the site to be formed and a pressure is applied.
  • This makes it possible to keep the first mold stationary at a portion other than the portion where the thick portion of the metal pipe is formed, so that the first mold is metal at the portion other than the portion where the thick portion is formed. It does not rub against the inner peripheral surface of the pipe made in the axial direction. Accordingly, it is possible to prevent the inner surface of the metal pipe from being damaged or deformed due to the inner mold rubbing in the axial direction.
  • the sixth invention is a metal pipe processed by any one of the first to third processing methods.
  • the stress concentration portion is formed in the middle portion in the axial direction of the metal pipe and set in the outer mold, and then the inner mold is inserted into the metal pipe and stress is applied by applying pressure in the axial direction. Since the stress is concentrated at the concentrated part and deformed, and the thick part is formed starting from this deformed part, it is not necessary to heat the metal pipe to a high temperature in order to suppress deformation resistance. In addition, the dimensional accuracy can be increased and energy consumption can be reduced. Therefore, it is possible to obtain a light and highly accurate metal pipe having a necessary strength at a necessary portion at a low cost.
  • the step portion is formed in the metal pipe, and the step portion is used as the stress concentration portion. Therefore, when the applied pressure is applied, the stress concentration can be surely caused and deformed. Thick parts can be formed as intended.
  • the step portion is formed by performing the pipe expanding process on the metal pipe, the step portion can be easily obtained, and the metal pipe can be made at a lower cost. Can do.
  • the thick portion can be formed without heating the metal pipe to a high temperature in order to suppress deformation resistance, so that production efficiency and dimensional accuracy can be improved. Energy consumption can be reduced. Therefore, it is possible to obtain a light and highly accurate metal pipe having a necessary strength at a necessary portion at a low cost.
  • the first mold is inserted into a part other than the part that forms the thick part of the metal pipe, and the second mold is inserted into the part that forms the thick part of the metal pipe. Since the second mold is driven by the driving device, it is possible to prevent the inner surface of the metal pipe from being damaged or deformed as the metal pipe is thickened.
  • FIG. 4 is a view corresponding to FIG. 3 in a state where a metal pipe that has undergone a pipe expansion process is set.
  • FIG. 4 is a view corresponding to FIG. 3 in a state where the formation of the thick portion is completed.
  • FIG. 1 shows a state in which a metal pipe 1 according to an embodiment of the present invention is fixed to a flange component member 2.
  • the metal pipe 1 constitutes a pipe portion of an exhaust manifold that is a part of an exhaust system of an internal combustion engine mounted on an automobile (not shown).
  • the upstream side in the exhaust flow direction of the metal pipe 1 is simply referred to as the upstream side
  • the downstream side in the exhaust flow direction is simply referred to as the downstream side.
  • the upstream side of the metal pipe 1 is inserted into a through hole 2a formed in the flange component 2.
  • the upstream outer peripheral surface of the metal pipe 1 and the peripheral edge portion of the through hole 2a of the flange component 2 are welded over the entire periphery.
  • Reference symbol C in FIGS. 1 and 2 is a weld bead.
  • the flange component 2 is for forming a flange on the metal pipe 1 and is joined to other components.
  • the pipe that is the material of the metal pipe 1 is a steel pipe. As shown in FIG. 4, the thickness of the metal pipe 1 before processing is the same across both ends, and in the present embodiment, the thickness is 1.2 mm.
  • the predetermined range on the upstream side of the metal pipe 1 is a thick portion 10 that is thicker than other portions.
  • the thick portion 10 is obtained by a processing method described later.
  • the thickness of the thick part 10 is 2.0 mm.
  • the outer diameter of the metal pipe 1 is set so that a portion corresponding to the thick portion 10 is larger than other portions. Therefore, the thick portion 10 is formed so as to rise to the outside of the metal pipe 1.
  • the region at the beginning of formation of the thick portion 10 (downstream end of the thick portion 10) is composed of a tapered surface that increases in diameter toward the upstream side.
  • An enlarged diameter portion 10a is formed. By forming the enlarged diameter portion 10a, the thickness of the metal pipe 1 is gradually increased.
  • the surface 10 b in the region upstream of the enlarged diameter portion 10 a extends substantially parallel to the axis.
  • the dimension in the axial direction of the enlarged diameter portion 10a is set sufficiently shorter than the dimension in the axial direction of the surface 10b.
  • the surface 1a of the portion other than the thick portion 10 extends substantially parallel to the axis.
  • An arc surface 1b is formed between the surface 1a and the enlarged diameter portion 10a, and the surface 1a and the enlarged diameter portion 10a are continuous through the arc surface 1b.
  • the radius of curvature of the arc surface 1b is set to 5 mm or more and 15 mm or less. By forming the arc surface 1b, stress concentration is less likely to occur. If the radius of curvature of the circular arc surface 1b is smaller than 5 mm, the stress generated in the vicinity of the circular arc surface 1b increases and the reliability of the metal pipe 1 decreases, and if it exceeds 15 mm, the total length of the metal pipe 1 increases. This is because the layout is deteriorated.
  • the angle ⁇ formed between the extension line (indicated by a broken line in FIG. 2) of the surface 1a of the metal pipe 1 and the enlarged diameter portion 10a is set to 5 ° or more and 25 ° or less. If the angle ⁇ is less than 5 °, the part where the wall thickness gradually changes (wall thickness gradually changing part) becomes longer, and the layout of the metal pipe 1 deteriorates. The stress concentration in the region A becomes too large, and the stress generated in the portion A exceeds the stress generated in the portion B. Therefore, setting in this range is preferable.
  • a large-diameter portion 1c having a larger diameter than the downstream side is formed on the inner peripheral surface of the upstream end portion of the metal pipe 1. Further, on the downstream side of the large diameter portion 1c, a reduced diameter portion 1d having a tapered surface that decreases in diameter toward the downstream side is formed continuously with the large diameter portion 1c. Due to the formation of the reduced diameter portion 1d, the wall thickness of the upstream end portion of the metal pipe 1 gradually decreases as it approaches the large diameter portion 1c. Thus, since the reduced diameter portion 1d is formed and the thickness is gradually changed, stress concentration is less likely to occur.
  • the dimensions in the axial direction of the large diameter portion 1c and the reduced diameter portion 1d are set to be significantly shorter than the dimensions in the axial direction of the entire thick portion 10.
  • the cross section of the metal pipe 1 before processing is circular.
  • the thickness of the metal pipe 1 before processing is 1.2 mm, and the outer diameter is about 40 mm. Further, the length of the metal pipe 1 before processing is about 120 mm. Note that the thickness, outer diameter, and length of the metal pipe 1 before processing are merely examples, and the present invention is not limited thereto.
  • the metal pipe 1 is expanded.
  • the region where the tube expansion process is performed is equal to the region where the thick portion 10 is formed. Therefore, the position of the start point of the area to be subjected to the pipe expansion process is the same position as the formation site of the enlarged diameter part 10a (shown in FIG. 2), and the position of the end point is the upstream end part of the metal pipe 1.
  • Tube expansion processing is performed using a known tube expansion device 15.
  • the step part 100 is formed in the axial direction intermediate part of the metal pipe 1.
  • the step portion 100 is a portion that becomes the stress concentration portion of the present invention.
  • the above is the stress concentration portion forming step
  • the tube expansion device 15 is the stress concentration portion forming device.
  • the outer mold 20 includes a first divided member 21 and a second divided member 22.
  • the first split member 21 is formed with a concave surface 21 a formed along the half in the radial direction of the outer peripheral surface of the metal pipe 1.
  • the second divided member 22 is also formed with a concave surface 22 a formed along the radial half of the outer peripheral surface of the metal pipe 1.
  • the first split member 21 and the second split member 22 are fastened and integrated using a fastening member (not shown) in a state where the open surfaces of the concave surface 21a and the concave surface 22a are combined.
  • a through hole 20a extending in the vertical direction is formed by the concave surface 21a and the concave surface 22a.
  • the inner diameter of the upper half of the through hole 20 a is the same as the outer diameter of the expanded portion of the metal pipe 1, and the inner diameter of the lower half is the same as the outer diameter of the metallic pipe 1 other than the expanded portion. .
  • the lower end portion of the outer mold 20 is fixed to the base plate 23.
  • the base plate 23 is formed with a through hole 23 a communicating with the lower end portion of the through hole 20 a of the outer mold 20 so as to penetrate vertically.
  • the inner diameter of the through hole 23a of the base plate 23 is smaller than the inner diameter of the lower half of the through hole 20a of the outer mold 20, and the downstream end of the metal pipe 1 is the base plate 23 as shown in FIG. It comes in contact with the peripheral edge of the through hole 23a from above. In this state, the metal pipe 1 is supported by the base plate 23. Further, the base plate 23 is formed with a recess 23b into which the lower end portion of the outer mold 20 is fitted.
  • the entire outer peripheral surface of the metal pipe 1 is held by the outer mold 20 by inserting the metal pipe 1 into the outer mold 20 with the expansion side facing up. This is the pipe setting process.
  • the inner mold 25 After passing through the pipe expansion process and the pipe setting process, the inner mold 25 is inserted into the metal pipe 1.
  • either the pipe expansion process or the pipe setting process may be performed first. That is, it is possible to perform the pipe expansion process after the pipe setting process.
  • the inner mold 25 is separated from the first mold 27 and the first mold 27 inserted into a portion other than the portion that forms the thick portion 10 of the metal pipe 1.
  • the second mold 28 is inserted into a portion of the metal pipe 1 where the thick portion 10 is formed, and the spring 29 is disposed between the first mold 27 and the second mold 28.
  • the first mold 27 is formed in a cylindrical shape extending vertically. As shown in FIG. 7, the outer diameter of the first mold 27 is substantially the same from the upper end to the lower end, and is set to be substantially the same as the inner diameter of the portion of the metal pipe 1 that has not been expanded. Yes. Therefore, as shown in FIG. 3, the lower end portion of the first mold 27 is inserted into the through hole 23 a of the base plate 23. Moreover, the length of the 1st type
  • mold 27 is set longer than the length of the part by which the pipe expansion process of the metal pipe 1 is not carried out.
  • a tapered surface 27a is formed at the lower end portion of the first mold 27 so as to be tapered.
  • the first mold 27 is formed with a central hole 27b extending along the axis.
  • the center hole 27b is formed so as to penetrate the first mold 27 vertically.
  • a receiving portion 27c that receives the lower end portion of the spring 29 is formed in the vicinity of the central portion in the vertical direction of the inner peripheral surface of the center hole 27b so as to protrude inward of the center hole 27b.
  • the second mold 28 is also formed in a cylindrical shape. As shown in FIG. 8, a first small diameter portion 28 a is provided at the lower end portion of the second mold 28.
  • the outer diameter of the first small diameter portion 28 a is set to be substantially the same as the outer diameter of the first mold 27.
  • a tapered surface portion 28b that is reduced in diameter toward the lower side and continues to the first small-diameter portion 28a is formed.
  • a second small diameter portion 28 c is formed above the tapered surface portion 28 b of the second mold 28.
  • the second small diameter portion 28c has a larger diameter than the first small diameter portion 28a.
  • the outer diameter of the main body portion 28d above the second small diameter portion 28c of the second mold 28 is set to be substantially the same as the inner diameter of the upper portion of the through hole 20a of the outer mold 20.
  • a step portion 28e is formed between the main body portion 28d and the second small diameter portion 28c. The upstream end portion of the metal pipe 1 is fitted into the step portion 28e.
  • the second mold 28 is formed with a screw hole 28f extending along the axis.
  • the screw hole 28f is open at the upper end surface of the second mold 28.
  • a spring insertion hole 28g into which the spring 29 is inserted is formed in the lower portion of the second mold 28. The upper end portion of the spring 29 comes into contact with the bottom surface of the spring insertion hole 28g.
  • a plate 30 is fastened and fixed to the upper end of the second mold 28 by bolts 31.
  • a bolt insertion hole 30 a through which the bolt 31 is inserted is formed at the center of the plate member 30.
  • the bolt 31 inserted through the bolt insertion hole 30a is screwed into the screw hole 28f of the second mold 28.
  • a driving device 33 is connected to the plate member 30.
  • the drive device 33 is for moving the second mold 28 in the vertical direction.
  • the first mold 27 is inserted into the metal pipe 1, and then the second mold 28 is inserted.
  • the spring 29 is pushed downward, whereby the first mold 27 is pushed down, and the lower end of the first mold 27 is formed in the through hole 23a of the base plate 23. Inserted into.
  • the upper part of the step part 100 is deformed with the deformation part of the step part 100 as a base point. This deformation occurs in the space S between the outer mold 20 and the inner mold 5, and the deformed portion of the metal pipe 1 is formed by the inner peripheral surface of the outer mold 20 and the outer peripheral surface of the inner mold 25 and is thick. Part 10.
  • the metal pipe 1 after processing is shown in FIG.
  • the thickness of the portion other than the expanded portion of the metal pipe 1 does not change greatly for the following reason. That is, a minute clearance is provided between the outer mold 20 and the outer surface of the metal pipe 1 and between the inner mold 25 and the inner surface of the metal pipe 1 in consideration of formability.
  • the processing force is used for forming the stepped portion 100, thereby causing stress generated in a lower portion of the metal pipe 1 than the stepped portion 100. Accordingly, the thickness change of the metal pipe 1 other than the expanded portion is suppressed.
  • the processing apparatus of the present invention includes a tube expansion device 15, an outer mold 20, an inner mold 25, a base plate 23, a plate material 30, and a driving device 33.
  • the upstream end of the metal pipe 1 processed as described above is inserted into the through hole 2 a of the flange constituent member 2 and welded to the peripheral portion of the through hole 2 a of the flange constituent member 2.
  • the stress ⁇ in the circle A is smaller than the stress in the circle B by setting the angle ⁇ formed by the enlarged diameter portion 10a of the metal pipe 1 and the surface 1a to 25 ° or less. That is, since the stress of the other part (part in the circle A) is smaller than the stress of the welded part (part in the circle B) of the metal pipe 1, the stress of the part other than the welded part in use is reduced. It will not break faster.
  • the inner mold 25 is inserted into the metal pipe 1.
  • the thick portion 10 is formed starting from the deformed portion.
  • the step portion 100 is formed in the metal pipe 1 and the step portion 100 is used as a stress concentration portion, when the applied pressure is applied, the stress concentration can be surely generated and deformed.
  • the thick part 10 can be formed.
  • the stepped portion 100 is formed by expanding the metal pipe 1, the stepped portion 100 can be easily obtained, and the metal pipe 1 can be made at a lower cost. .
  • the inner mold 25 is divided into the first mold 27 and the second mold 28.
  • the shape may be such that the mold 28 is integrally formed.
  • the inner mold 25 is also formed with a step portion 25a into which the upstream end portion of the metal pipe 1 is fitted.
  • the convex part 101 is formed.
  • the convex portion 101 may be a stress concentration portion.
  • a concave portion may be used instead of the convex portion 101.
  • a thin portion may be formed, and this thin portion may be used as a stress concentration portion.
  • the said embodiment demonstrated the case where the thick part 10 was formed so that it might swell on the outer side of the metal pipe 1, not only this but the thick part 10 so that it may swell on the inner side of the metal pipe 1 It may be formed.
  • the material of the metal pipe 1 may be any material that can be plastically processed, and various materials can be used.
  • the metal pipe 1 can be used not only for an automobile exhaust system part but also for an air supply pipe or a liquid supply pipe, for example.
  • the diameter of the metal pipe 1 is not particularly limited, and may be a large diameter of about several tens of cm, for example.
  • the present invention can be applied to, for example, a metal pipe constituting an automobile exhaust system.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Exhaust Silencers (AREA)

Abstract

La présente invention concerne un procédé de traitement d'un tuyau métallique. Dans ledit procédé, un tuyau métallique (1) est traité de façon à transformer une partie de celui-ci (1) dans la direction axiale en une partie épaisse (10) qui est plus épaisse que les autres parties. Le procédé comprend une étape de formation d'une partie qui concentre la contrainte, une partie échelonnée étant formée dans la partie médiane du tuyau métallique (1) dans la direction axiale, dans le but de concentrer une contrainte lorsque le tuyau métallique (1) subit une pression appliquée dans la direction axiale ; une étape d'installation du tuyau, le tuyau métallique (1) étant placé dans un moule externe (20) ; et une étape de formation d'une partie épaisse dans laquelle, à la fin de l'étape de formation de la partie qui concentre la contrainte et de l'étape d'installation du tuyau, un moule interne (25) est inséré dans le tuyau métallique (1) et un espace (S) permettant de former la partie épaisse (10) est formé entre le moule interne (25) et le moule externe (20), et une pression dans la direction axiale est appliquée aux extrémités du tuyau métallique (1), ce qui concentre la contrainte sur la partie échelonnée et déforme celle-ci, et ce qui forme la partie épaisse (10) en résultat à cette déformation.
PCT/JP2010/007385 2010-12-20 2010-12-20 Tuyau métallique, procédé et dispositif pour le traiter Ceased WO2012085961A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP10853382.9A EP2546005A4 (fr) 2010-12-20 2010-12-20 Tuyau métallique, procédé et dispositif pour le traiter
JP2012502373A JP5734950B2 (ja) 2010-12-20 2010-12-20 金属製パイプの加工方法及び加工装置
CN201080028917.2A CN102712031B (zh) 2010-12-20 2010-12-20 金属制管、金属制管的加工方法及加工装置
PCT/JP2010/007385 WO2012085961A1 (fr) 2010-12-20 2010-12-20 Tuyau métallique, procédé et dispositif pour le traiter
US13/381,497 US20130269408A1 (en) 2010-12-20 2010-12-20 Metal pipe, and method and device for processing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2010/007385 WO2012085961A1 (fr) 2010-12-20 2010-12-20 Tuyau métallique, procédé et dispositif pour le traiter

Publications (1)

Publication Number Publication Date
WO2012085961A1 true WO2012085961A1 (fr) 2012-06-28

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PCT/JP2010/007385 Ceased WO2012085961A1 (fr) 2010-12-20 2010-12-20 Tuyau métallique, procédé et dispositif pour le traiter

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US (1) US20130269408A1 (fr)
EP (1) EP2546005A4 (fr)
JP (1) JP5734950B2 (fr)
CN (1) CN102712031B (fr)
WO (1) WO2012085961A1 (fr)

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CN103586382B (zh) * 2013-11-12 2015-06-03 重庆大学 一种半轴套管坯一次双件局部电镦制备装置及方法
DE102016103824A1 (de) * 2016-03-03 2017-09-07 Schmittergroup Ag Stoßdämpferrohr und Verfahren zu dessen Herstellung
RU2652931C1 (ru) * 2017-04-20 2018-05-03 Общество с ограниченной ответственностью Управляющая компания "Алтайский завод прецизионных изделий" Штамп для высадки концов трубок высокого давления
JP6844791B2 (ja) * 2018-11-21 2021-03-17 株式会社ニチリン 二重管式熱交換器の製造方法

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JP5734950B2 (ja) 2015-06-17
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EP2546005A1 (fr) 2013-01-16
CN102712031A (zh) 2012-10-03
EP2546005A4 (fr) 2014-01-01

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