[go: up one dir, main page]

WO2019210992A1 - Mécanisme de laminage circulaire comprenant un mandrin de laminage refroidi - Google Patents

Mécanisme de laminage circulaire comprenant un mandrin de laminage refroidi Download PDF

Info

Publication number
WO2019210992A1
WO2019210992A1 PCT/EP2019/000113 EP2019000113W WO2019210992A1 WO 2019210992 A1 WO2019210992 A1 WO 2019210992A1 EP 2019000113 W EP2019000113 W EP 2019000113W WO 2019210992 A1 WO2019210992 A1 WO 2019210992A1
Authority
WO
WIPO (PCT)
Prior art keywords
mandrel
channel
rolling mill
rolling
ring
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/EP2019/000113
Other languages
German (de)
English (en)
Inventor
Jochen SCHWEIKERT
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.)
L Schuler GmbH
Original Assignee
L Schuler GmbH
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 L Schuler GmbH filed Critical L Schuler GmbH
Publication of WO2019210992A1 publication Critical patent/WO2019210992A1/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
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length

Definitions

  • the invention relates to a ring rolling mill with a radial rolling device, which has a main roll and a Dornvorrich device between which a ring is deformable, wherein the mandrel device comprises a rolling mandrel which is rotatably mounted in at least one axial end portion in a pivot bearing and at least an inner recess has, and wherein a cooling device is provided, by means of which a cooling fluid can be introduced into the inner recess of the rolling mandrel and can be discharged therefrom.
  • a ring rolling mill is used for rolling seamless rings from a metal blank or a ring preform.
  • the ring preform is formed by means of various rollers from the original diameter to the desired final diameter vice.
  • An axial rolling device is usually used for forming the ring in the direction of its axis of rotation or an axis parallel thereto, i. to reshape the sides flanks of the ring.
  • the radial rolling device serves to deform the ring in a direction perpendicular thereto, i. in the direction of the radius of the ring to be formed.
  • the ring preform is placed on a substantially horizontal table and in the interior of the ring, a rolling mandrel is introduced, for example, from above.
  • the rolling mandrel is part of a Dornvor direction and is at least above the table rotatably ge outsourced.
  • the rolling mandrel can be lowered until the lower end of the rolling mandrel engages in a lower mandrel bearing arranged below the table.
  • a ring rolling mill according to DE 71 34 488 U, it is ensured to provide the rolling mandrel on its end face arranged at the free end with an axial bore to increase the upper surface of the rolling mandrel and thereby achieve a faster lere cooling in the air.
  • it may be provided to spray water by means of a nozzle in the inner recess to improve the cooling effect.
  • a device for wide of cans which has a mandrel in which an axial channel is formed, which is flowed through by a cooling liquid keit.
  • the cooling liquid can be introduced to the OBE Ren axial end face in the axial channel and flow out at the lower axial end face and flow to egg NEM collection.
  • the ring When rolling rings made of nickel-based alloys, the ring must not come into contact with water during the rolling process, so that the main rollers and the mandrel Roller can not be cooled ge by external spraying of water ge. This is particularly problematic in the rolling mandrel, since this quickly heated due to its relatively ge wrestle mass and thus ver loses strength. It is therefore an attempt to cool the mandrel after Beendi tion of the rolling process by spraying outside with water as much as possible again, so he canteurlau fen the next rolling process with sufficient stability. The use of the ring rolling mill is severely limited by the time-consuming and difficult cooling of the rolling mandrel, which is economically disadvantageous.
  • the invention has for its object to provide a ring rolling mill of the type mentioned, in which the rolling mandrel maintains high strength throughout the rolling process.
  • the invention is based on the basic idea to cool the rolling mandrel during the rolling process by internal cooling channels with a defined flow of the cooling fluid.
  • the at least ei ne inner recess is provided in the interior of the rolling mandrel, which opens or opens in the direction of that end region of the rolling mandrel, which is rotatably mounted in the rotary bearing.
  • the rolling mandrel is aligned substantially vertically and is rotatably mounted in its upper end region.
  • the cooling fluid which is water in particular, adeflüs ⁇ stechnik and preferably is also introduced currency end of the rolling process from above into the inner recess of the rolling mandrel and removed again therefrom.
  • the cooling fluid which is water in particular, adeflüs ⁇ stechnik and preferably is also introduced currency end of the rolling process from above into the inner recess of the rolling mandrel and removed again therefrom.
  • the rolling mandrel protrudes freely at its opposite end region.
  • the rolling mandrel may be rotatably mounted at this opposite end portion.
  • the rolling mandrel is rotatably supported in its upper end by radially outer, rotating rotary bearings, so that the local end face of the rolling mandrel is exposed. This the free, projecting end of the
  • Rolling mandrel opposite end face can be used in a further development of the invention that the cooling fluid on the water end face of the rolling mandrel in the inner recess of the rolling mandrel can be introduced and / or discharged from this.
  • the rolling mandrel carries at its rear, the free end portion facing away from a neck in which adevor direction is formed with a Einbringkanal and / or a discharge channel for the cooling fluid.
  • the approach is preferential example of a one- or multi-part metal block gebil- det, which is connected to the rolling mandrel and serves to bring the cooling fluid in a predetermined, reproducible manner through the introduction channel into the inner recess of the rolling mandrel and / or remove it in a defined, reproducible manner through the discharge channel from the inner recess.
  • the approach associated with the rolling mandrel is rotatably mounted in a bearing sleeve, wherein preferably at least one and in particular a plurality of ring seals are provided between the approach and the bearing sleeve.
  • an insertion bore be asbil det, through which the cooling fluid can be introduced into the introduction channel of the approach.
  • a drainage hole can be easily seen in the bearing sleeve, through which the cooling fluid can be removed from the discharge channel of the approach.
  • the insertion bore of the bearing sleeve is also connected during the rotation of the rolling mandrel predominantly or so constantly with the introduction channel of the approach, in the invention, on the inner top surface of the bearing sleeve and / or the outer surface of the set to a 1.
  • Ring channel be formed.
  • the first annular channel may extend over a portion of the circumference of the bearing sleeve and / or the neck and preferably over the entire circumference of the bearing sleeve and / or the neck.
  • the introduced through the insertion bore of the bearing sleeve cooling fluid flows into the first annular channel, which is connected to the introduction channel of the approach, so that the cooling fluid V orzugs- example in each rotational position of the rolling mandrel in the introduction channel can flow.
  • a second annular channel is formed, which connects the Ab technologicalbohrung the bearing sleeve with the discharge channel of the approach.
  • the second annular channel may extend over a portion of the circumference of the bearing sleeve and / or the neck and preferably over the entire circumference, so that the Ab technologicalbohrung the bearing sleeve in each rotational position of the rolling mandrel is in communication with the discharge channel of the approach.
  • the at least one inner recess of the rolling mandrel can be formed in a structurally simple embodiment of the invention of an axial bore, which preferably opens on the upper end face of the rolling mandrel.
  • an axial tube can be inserted into the inner recess of the rolling mandrel with au jan workedem game.
  • the axial tube has ei nen smaller outer diameter than the inner diameter of the inner recess, so that between the inner wall of the inner recess and the axial tube, an annular space or egg nen annular channel is formed.
  • the axial tube dips into the recess in the rolling mandrel to close to the bottom of the inner recess.
  • the cooling fluid can be supplied by, for example, the axial tube is in communication with the introduction channel of the approach.
  • the cooling fluid flows in the interior of the axial tube to the near-bottom region of the inner recess and occurs there from the axial tube.
  • the cooling fluid then flows upwards again into the annular space formed between the inner wall of the inner recess and the axial tube and is then removed from the annular space. This can be done, for example, that the annulus is in communication with the discharge channel of the approach.
  • a controller or Re gelung for the temperature of the cooling fluid and in particular for the temperature of cooling water can be used.
  • the temperature of thedeflu ids on the introduction side i.
  • the temperature of the cooling fluid on the discharge side for example in the From channel and / or downstream of the discharge channel can be detected by a sensor, the sensor emits a corresponding temperature signal to the control unit.
  • the cooling effect can be varied and maintained by the controller at a predetermined value.
  • Fig. 1 shows a longitudinal section through a rolling device
  • Fig. 2 shows the cooling device of the rolling mandrel in magnification ter representation.
  • a mandrel device 10 shown in the figures acts together with a main roller H only shown men, wherein between the main roller H and the Dornvorrich device 10, a ring can be rolled and formed in the usual manner.
  • a fixed frame member 33 is provided, are held on the two superimposed pivot bearing 12.
  • a sleeve-shaped receiving part 13 On the frame part 33
  • a sleeve-shaped receiving part 13 By means of the pivot bearing 12 rotatably mounted.
  • an upper end portion 11 a of a rolling mandrel 11 is rotatably inserted, so that the rolling mandrel 11 is rotatable together with the receiving part 13 about its vertical longitudinal axis.
  • the rolling mandrel 11 is designed so that it cantilevered from the receiving part 13 with a lower end portion 11 b, so that the cantilevered end portion 11 b with the main roller H can cooperate.
  • an inner recess 15 in the form of egg ner axial bore is formed, which opens on the upper, the free end portion 11 a of the rolling mandrel facing away from end face 11 c of the rolling mandrel 11.
  • an axial tube 25 is inserted with play so that it is from the upper end of the inner recess 15 to near the bottom the inner recess 15 extends, wherein between an Au DTober Structure .ober Structure of the axial tube 25 and the inner wall of the inner recess 15, an annular space 32 and an annular channel GE is formed.
  • a multi-part projection 16 is arranged as part of egg ner cooling device 14 and connected to the rolling mandrel 11.
  • the projection 16 has an intermediate piece 19, which is fixedly mounted by means of screws 20 on the end face 11 c of the rolling mandrel 11.
  • a line block 21 is arranged, by means of, for example, a
  • Screw 23 which passes through a bore 22 of the line block 21, is fixedly connected to the intermediate piece 19.
  • the rolling mandrel 11 and the projection 16 thus rotate as a unit.
  • the projection 16 is rotatably gela Gert by means of its line block 21 in a surrounding the line block 21 bearing sleeve 24.
  • a plurality of pivot bearings 29 are arranged between an inner surface 24a of the bearing sleeve 24 and the line block 21.
  • first annular channel 27 is formed in the line block 21, which is connected to a wall of the bearing sleeve 24 penetrating insertion bore 30.
  • the 1. Ring channel 27 communicates with a Einbringkanal 17 in connec tion, which is formed in sections in the line block 21 and from sections in the intermediate piece 19 and thus in the on set 16.
  • a horizontal 1st section 17a of the insertion channel 17 the section in a vertical 2.
  • From 17b of the insertion channel 17 passes.
  • From the second section 17b is connected to a third section 17c of the insertion channel 17, which is formed in the intermediate piece 19, in connection.
  • a 4th section 17d of the insertion channel 17 ver binds the 3rd section 17c of the introduction channel 17 with the axial tube 25.
  • a cooling fluid and in particular a cooling fluid from the outside of the bearing sleeve 24 through the insertion bore 30 and the A bring channel 17 to introduce into the axial tube 19, as indicated by the arrow A.
  • the insertion bore 30 is in each rotational position of the rolling mandrel 11 and the neck 16 with the axial tube 25 in conjunction.
  • a circumferential, radially opening second Ringka channel 28 is formed, which is connected to a se the wall of the Lagerhül 24 penetrating discharge hole 31.
  • the second annular channel 28 communicates with a discharge channel 18, which forms from sections in the line block 21 and sections in the intermediate piece 19 and thus in the neck 16, in conjunction.
  • From 18b of the discharge channel 18 passes.
  • the second section 18b communicates with a third section 18c of the discharge channel 18 formed in the intermediate piece 19.
  • a 4th section 18d of the discharge channel 18 connects the 3rd section 18c of the discharge channel 18 with the annular space 32 within the axial tube 25.
  • a cooling fluid and in particular a cooling liquid from the annular space 32 through the discharge channel 18 and through the discharge bore 31 to bring to the outside of the bearing sleeve 24, as indicated by the arrow B.
  • Due to the second annular channel 28 of the annular space 32 is in each rotational position of the rolling mandrel 11 and the neck 16 with the discharge hole 31 in connection.
  • the cooling fluid then flows upwards again in the annular space 32 and enters into the discharge channel 18 and out again at the discharge bore 31.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne un mécanisme de laminage circulaire comportant un dispositif de laminage radial, qui possède un cylindre principal (H) et un dispositif à mandrin (10), entre lesquels un anneau peut être mis en forme. Le dispositif à mandrin (10) comporte un mandrin de laminage (11), qui est monté de manière à pouvoir tourner dans au moins une zone d'extrémité (11a) axiale dans un palier rotatif (12) et qui comporte un évidement intérieur (15). Un fluide de refroidissement peut être introduit dans la zone d'extrémité (11a) montée de manière à pouvoir tourner dans le palier rotatif (12) dans l'évidement intérieur (15) du mandrin de laminage (11) et en être évacué au moyen d'un dispositif de refroidissement (14).
PCT/EP2019/000113 2018-05-03 2019-04-09 Mécanisme de laminage circulaire comprenant un mandrin de laminage refroidi Ceased WO2019210992A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018003549.3 2018-05-03
DE102018003549.3A DE102018003549B3 (de) 2018-05-03 2018-05-03 Ringwalzwerk mit gekühltem Walzdorn

Publications (1)

Publication Number Publication Date
WO2019210992A1 true WO2019210992A1 (fr) 2019-11-07

Family

ID=66286289

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/000113 Ceased WO2019210992A1 (fr) 2018-05-03 2019-04-09 Mécanisme de laminage circulaire comprenant un mandrin de laminage refroidi

Country Status (2)

Country Link
DE (1) DE102018003549B3 (fr)
WO (1) WO2019210992A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB651176A (en) * 1947-09-27 1951-03-14 Heppenstall Co Improvements in or relating to ring rolling mill
DE7134488U (de) 1971-09-10 1972-01-05 Stahlwerke Plate R & H Walzdorn für ein Ringwalzwerk
JPS5825834A (ja) * 1981-07-31 1983-02-16 Toyota Motor Corp 熱間リングロ−リングミル装置
JP2007289967A (ja) * 2006-04-20 2007-11-08 Toyota Motor Corp 環状部品の逐次成形方法及びその装置並びに逐次成形用マンドレル
WO2009146715A1 (fr) * 2008-06-02 2009-12-10 Aft Advanced Forging Technologies Gmbh Dispositif d’élargissement de boîte et procédé permettant de forger une ébauche de boîte

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB651176A (en) * 1947-09-27 1951-03-14 Heppenstall Co Improvements in or relating to ring rolling mill
DE7134488U (de) 1971-09-10 1972-01-05 Stahlwerke Plate R & H Walzdorn für ein Ringwalzwerk
JPS5825834A (ja) * 1981-07-31 1983-02-16 Toyota Motor Corp 熱間リングロ−リングミル装置
JP2007289967A (ja) * 2006-04-20 2007-11-08 Toyota Motor Corp 環状部品の逐次成形方法及びその装置並びに逐次成形用マンドレル
WO2009146715A1 (fr) * 2008-06-02 2009-12-10 Aft Advanced Forging Technologies Gmbh Dispositif d’élargissement de boîte et procédé permettant de forger une ébauche de boîte
DE212008000083U1 (de) 2008-06-02 2010-08-12 Brighton Equipment Corp. Ltd. Büchsenaufweitvorrichtung

Also Published As

Publication number Publication date
DE102018003549B3 (de) 2019-08-01

Similar Documents

Publication Publication Date Title
DE3014891C2 (fr)
WO2011026957A1 (fr) Rouleau et agencement de rouleau pour une installation de coulée continue
EP2151652A2 (fr) Pièce de connexion entre un tuyau de séparation et un tuyau de refroidissement ainsi que procédé de connexion d'un tuyau de séparation et d'un tuyau de refroidissement
EP2877298B1 (fr) Procédé d'extrusion direct ou indirect de tubes métalliques, presse d'extrusion de tubes métalliques ainsi que tube métallique extrudé
EP0281515A2 (fr) Dispositif de refroidissement pour une presse d'extrusion de métaux légers
CH675086A5 (fr)
EP3697553A1 (fr) Dispositif pour accoupler une alimentation en agent de refroidissement à un cylindre
DE2558671C2 (de) Kaltziehvorrichtung zum Reduzieren von Rohren
AT523701B1 (de) Zweistoff-Schaftdüse mit verringerter Verstopfungsneigung
EP1764167A1 (fr) Procédé et laminoir pour la fabrication d'un tube sans soudure
EP2900401B1 (fr) Rouleau de guidage de barres refroidi, à plusieurs paliers
WO2019210992A1 (fr) Mécanisme de laminage circulaire comprenant un mandrin de laminage refroidi
DE102014105815A1 (de) Innenkonturnahe Kühlwasserführung in Lochdornen
DE2552969A1 (de) Fuehrungsrolle fuer stranggussanlagen, mit auf einer mehrfach gelagerten achse angeordneten rollenabschnitten
EP2188073A1 (fr) Cage de laminoir pour laminer des bandes métalliques et cylindres ou rouleaux pour ladite cage de laminoir
WO2014048670A1 (fr) Désoxydation de lingots creux produits par laminage oblique
EP2753186B1 (fr) Rouleau
DE4203964A1 (de) Ringmantel fuer eine walze zum kontinuierlichen giessen
DE102015202608A1 (de) Gießanlage
DE3342322A1 (de) Kuehlrohr fuer eine kuehlstrecke zum schnellen abkuehlen von walzdraht- oder stabmaterial
EP4159343A1 (fr) Palier support auxiliaire et installation de production dotée d'un tel palier support auxiliaire
EP1466674A2 (fr) Procédé et dispositif pour la fabrication d'un tube à partir d'un materiau métallique
WO2005123994A1 (fr) Dispositif pour filer des fils
DE3419769C2 (fr)
EP1949979B1 (fr) Laminoir destiné à la fabrication de tuyaux sans fil et procédé de fonctionnement d'un laminoir

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: 19719423

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 19719423

Country of ref document: EP

Kind code of ref document: A1