EP1264646A1 - Dispositif et méthode de fabrication des barres métalliques profilées - Google Patents

Dispositif et méthode de fabrication des barres métalliques profilées Download PDF

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Publication number
EP1264646A1
EP1264646A1 EP01810547A EP01810547A EP1264646A1 EP 1264646 A1 EP1264646 A1 EP 1264646A1 EP 01810547 A EP01810547 A EP 01810547A EP 01810547 A EP01810547 A EP 01810547A EP 1264646 A1 EP1264646 A1 EP 1264646A1
Authority
EP
European Patent Office
Prior art keywords
heating chamber
cross
heating
chamber
section
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.)
Withdrawn
Application number
EP01810547A
Other languages
German (de)
English (en)
Inventor
Miroslaw Plata
Christophe Bagnoud
Grégoire Arnold
Martin Bolliger
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.)
3A Composites International AG
Original Assignee
Alcan Technology and Management Ltd
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 Alcan Technology and Management Ltd filed Critical Alcan Technology and Management Ltd
Priority to EP01810547A priority Critical patent/EP1264646A1/fr
Priority to JP2002153520A priority patent/JP2003033813A/ja
Priority to CA002388416A priority patent/CA2388416A1/fr
Priority to US10/163,771 priority patent/US6637250B2/en
Priority to NO20022658A priority patent/NO20022658L/no
Publication of EP1264646A1 publication Critical patent/EP1264646A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B21J5/004—Thixotropic process, i.e. forging at semi-solid state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/002—Extruding materials of special alloys so far as the composition of the alloy requires or permits special extruding methods of sequences
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C29/00—Cooling or heating work or parts of the extrusion press; Gas treatment of work

Definitions

  • the present invention relates to an extrusion device for producing a profile strand a compact made of an at least partially metallic material, wherein the extrusion device has a recipient with a receiving the pressing body Recipient chamber, a stamp, a shaping forming chamber and / or die and one disposed between the recipient chamber and the die or forming chamber Contains heating device, and a method for producing a metal profile strand.
  • wall thicknesses of the profiles of less than 2 mm can hardly be realized.
  • the limited pressing force as well as the temperature distribution and flow speeds the limited possibilities of an even metal distribution are essential factors in the application of today's pressing technology of manufacture stand in the way of very thin-walled profiles.
  • WO98 / 19803 proposes an extrusion process to solve the problems mentioned, in which the pressed body is deformed into the profile strand in the partially solid / partially liquid state becomes.
  • the compact material is placed in front of the Forming pressed through the heatable flow channels of a heating element.
  • the Pressing the initially solid material through the flow channels however requires very large press forces and there is a pronounced pressure drop in the Area of these flow channels.
  • the control of the pressing process due to the locally pronounced pressure drop, considerably more difficult.
  • the liquid component distribution is after passing through the heating element in the solid / partially liquid state of the compact material regulate and usually inhomogeneous.
  • the invention is therefore based on the object of improving the aforementioned method, and to reduce the pressure drop in the heating element. Furthermore, the pressing of Compression bodies made of thixotropic alloys in the partially solid / partially liquid state with attainment the most homogeneous possible distribution of the liquid portion can be simplified.
  • the heating device leads to a pressing direction arranged directly or indirectly after the recipient, from one Hollow body formed heating chamber with at least a first and a second Heating chamber section with heating chamber walls and means for heating the heating chamber walls contains and the first heating chamber section each have a larger cross-sectional diameter has as the second heating chamber section directly adjoining in the pressing direction x.
  • the heating chamber preferably contains less than five, advantageously less than four, and in particular two heating chamber sections. At least one of the heating chamber sections preferably all heating chamber sections are of larger cross-sectional diameter than the heating chamber section directly adjoining this in the pressing direction x, expediently with the exception of the first heating chamber section.
  • the transition area between draws two heating chamber sections with different cross-sectional diameters preferably by a sudden, full or partial circumferential narrowing out.
  • the narrowing of the cross-section is in a particularly preferred form of the invention as a whole or part of the circumference of the heating chamber extending paragraph or level.
  • the cross-sectional narrowing can also be continuous, e.g. B. funnel-shaped, run and optionally have a roughness pattern. Furthermore, a cross-sectional narrowing also run in several stages.
  • the narrowing of the cross section is preferably around 5 to 40%, advantageously 15 to 30% and in particular 20 to 30% of the cross-sectional diameter of the preceding heating chamber section.
  • the entire heating chamber length preferably corresponds to 2 to 4 times, in particular 2.5 to 3.5 times the length of the compact.
  • the cross-sectional shape and the cross-sectional diameter of the one adjoining the recipient chamber the first heating chamber section corresponds essentially, preferably exactly, the cross-sectional shape and the cross-sectional diameter of the recipient chamber.
  • the Press body is preferably in the form of a bolt
  • the cross-sectional shape of the The recipient chamber and the first heating chamber section adjoining the recipient chamber are circular cylindrical.
  • the following heating chamber sections are preferably also circular cylindrical.
  • the cross-sectional shapes of the heating chamber sections, in particular the heating chamber sections arranged near the die also designed differently and e.g. be elliptical.
  • the cross-sectional shapes of the heating chamber sections can be in a special design Invention also be approximated to the profile cross section of the profile strand.
  • In preferred Execution corresponds to a first heating chamber section of the cross-sectional shape and the cross-sectional diameter the recipient chamber and the subsequent heating chamber sections, in particular the heating chamber sections closest to the die a gradual approximation of their cross-sectional shape and their cross-sectional diameter in the pressing direction x to the profile cross section.
  • the approximation of the compact shape the profile cross section before the actual forming step in the die causes a reduction the pressing force to be applied to the die for pressing the compact material.
  • cross-sectional diameter means an average cross-sectional diameter.
  • the heating chamber of an extrusion device according to the invention for producing a rectangular profile strand can e.g. a circular cylinder-shaped adjoining the recipient chamber first heating chamber section and an elliptical, have the heating chamber section approximated to the profile cross section.
  • the heating chamber is preferably made of a heat-resistant, metallic hollow cylinder, in particular by a hollow cylinder made of steel.
  • the hollow cylinder is preferred from a ferromagnetic steel and in particular from a nickel-cobalt-chrome steel.
  • the recipient chamber and in particular the heating chamber are preferably with a heat-resistant insulation cladding.
  • the insulation panel preferably contains a ceramic material or is created from a ceramic material.
  • the Insulation cladding is particularly preferably made of a ceramic reinforced with carbon fibers Material with high insulation capacity.
  • the heating chamber walls are preferably heated by inductive heating.
  • the heating chamber or the metallic hollow cylinder of the heating chamber is preferred for this surrounded with an induction winding.
  • the induction loops are in particular spiral around the metallic hollow cylinder provided with the insulation cladding.
  • the applied induction field in particular causes the heating of the metallic Hollow cylinder and thus the heating chamber walls. Heating the walls of the heating chamber can optionally also be done using other heating methods, such as resistance heating.
  • the recipient or the recipient chamber wall preferably also has heating elements, such as. Heating wires, for heating the inserted into the recipient chamber Press body, with the heat transfer via the recipient chamber wall to the Press body takes place.
  • the inner one, which faces the compact material Wall of the heating chamber relief structures preferably essentially in the pressing direction running ribs or grooves, in particular aligned in the pressing direction, spiral the circumferential ribs or grooves.
  • the mentioned ribs, grooves or relief structures contribute to an increase in the surface area of the heating chamber walls and cause better heat transfer from the heating chamber walls into the compact material.
  • the alignment of the relief structures in the direction of the pressing causes less Frictional losses, which keeps the pressure drop within the heating chamber within limits.
  • the die preferably has one funnel-shaped narrowing of the cross section towards the die opening.
  • a, optionally also heated, in particular inductively heated, forming chamber in which the preheated and in particular partially liquid / partially solid compact material is deformed into a profile strand.
  • the forming chamber can also be part of the heating chamber at the end of the heating chamber in the pressing direction x in the form of another Heating chamber section may be formed.
  • a cooled mold can be provided in the connection to the forming chamber the heated and in particular partially liquid / partially solid profile strand is solidified.
  • a such a mold which is basically a conventional continuous casting mold can correspond, is appropriate with a cooling device for indirect cooling of the metal strand solidifying through contact with the mold wall.
  • the forming chamber wall preferably goes into the mold wall with a constant curvature about.
  • the forming chamber can be used in the same way to produce hollow profiles as with conventional extrusion with a corresponding mandrel insert his.
  • An intermediate element is preferably between the forming chamber and the cooled mold or layer arranged from a heat insulating material.
  • a die is preferably arranged downstream of the forming chamber or mold which the profile strand is deformed to the final shape.
  • the matrix can be used in this Application can also be optionally omitted. More details on the arrangement and structure of the forming chamber and mold can be found in WO 98/19803, which is hereby incorporated in its entirety by the disclosure.
  • Means for direct cooling can be used to cool the profile strand emerging from the die with e.g. a coolant, preferably a cooling device with complete Evaporation of a coolant applied to the profile strand can be provided.
  • the pressing force e.g. as a result of special additives required recipient temperature of up to 600 ° C
  • the pressing of the pressed body to the profile strand by an attacking on the profile strand Support traction e.g. a pull-out device may be provided.
  • the invention also relates to a method for producing a profile strand from a Press body made of an at least partially metallic material, the press body introduced into the recipient chamber of a recipient and by means of stamps while exercising a pressing pressure via a shaping forming chamber and / or die a profile strand is pressed, with the compact material before the pressing a profile strand preheated and in particular in a partially solid / partially liquid state brought.
  • the process is characterized in that the compact from the recipient chamber is led into the heating chamber of a heating device and via inductively heated heating chamber walls is preheated and the heating chamber at least a first and second Includes heating chamber section, and the second heating chamber section in the pressing direction x Forming a cross-sectional constriction has a smaller cross-sectional diameter as the preceding first heating chamber section and at the cross-sectional constriction a low-flow zone is formed in the pressing direction x, in which preheated zone and in particular partially liquid or liquid compact material retained becomes.
  • the preheating of the compact in the heating chamber serves to soften the compact or increasing its ductility and, in the case of thixotropic alloys, the transfer of the compact in a partially solid / partially liquid state.
  • the compact is preferably in the recipient chamber to a temperature of warmed less than or equal to the solidus temperature or, if this has already been preheated is further heated or kept at its preheating temperature.
  • the pressing body is removed from the drawing chamber by means of a stamp using a pressing pressure continuously led into the heating chamber, the stamp preferably is only moved up to the end of the recipient chamber.
  • the speed of advance can e.g. be around 5-10 mm / s.
  • the pressing body becomes an inductively heated heating chamber wall via the contact surfaces heated further, preferably to a temperature which is above the solidus temperature.
  • the inductive power is designed so that preferably only the metallic hollow cylinder the heating chamber and, if appropriate, the edge zone adjacent to the heating chamber wall of the compact material are directly heated inductively. It can also be provided that the entire cross section of the compact is heated inductively.
  • the first thing that forms is preferably in the area of Heating chamber walls made of a melt product with a high liquid content.
  • the in Phase of the compact material with a high liquid content formed near the heating chamber wall retained while the still solid or semi-solid compact material with less Liquid portion from the center of the cross-section into the following, narrowed heating chamber cross-section flows and is further heated.
  • the device according to the invention brings about an efficient and uniform heating of the compact material from the cross-sectional edge to the cross-sectional center and thus one homogeneous distribution of the liquid portion over the entire cross-section of the partially liquid / partially solid Press material in the area of the forming chamber or die entry.
  • the partially liquid to liquid compact material in the "dead zone" of the cross-sectional constriction also improves the heat exchange between the radiator wall and the pressed material.
  • the partially liquid / partially solid flows Pressed body material from the heating chamber into the shaping cross section of the Matrix and is finally formed into a profile strand.
  • the profile strand is cooled directly and / or indirectly by means of a cooling device and, if necessary by means of a pulling device using a pulling force for the further Processing promoted.
  • the profile strand cooled and brought to partial or complete solidification. optional the partially or completely solidified profile strand in a subsequent die finally shaped.
  • the compact material shows on leaving the heating chamber, i.e. when entering the shaping forming chamber or die, preferably a homogeneous portion Liquid phase of at most 70%, advantageously of 20-60%, and in particular of 40-50%, on.
  • a homogeneous portion Liquid phase of at most 70%, advantageously of 20-60%, and in particular of 40-50%, on.
  • the exact liquid component of the compact material to be aimed for is depending on the nature of the material to be processed and the profile cross-section of the profile strand to be produced.
  • the profile strand is appropriately actively cooled, preferably by completely evaporating a coolant sprayed onto the profile strand. Cooling with complete evaporation of the coolant prevents liquid coolant in the direction of the hot and, if necessary, still in the partially liquid Condition of the present metal can flow back. With this measure, the cooling device be placed as close as possible to the die.
  • Alloys in particular hard alloys, can be made with the device according to the invention and composite materials of all kinds cost-effectively to high quality products to process.
  • very thin-walled profiles can be made with the device according to the invention or profiles with very thin wall sections with wall thicknesses of less, for example than 2 mm, in particular less than 1 mm.
  • inventive Small and large profiles of various widths and in particular can be processed Large profiles with a large width, for example with a width of more than 500 mm, especially larger than 700 mm.
  • Existing extrusion plants can also economically justifiable extrusion devices according to the invention be converted.
  • An extrusion device 5 according to the invention shown in a detail, according to FIG Fig. 1a contains a recipient 10 with a recipient chamber 12 of circular cylindrical Cross-section.
  • the recipient 10 also has heating elements 20 in the form of heating wires for heating the pressed body 36 inserted in the recipient chamber 12.
  • the Press body 36 is in the pressing direction by means of punch 32 or by means of its pressing disk 34 x advanced. This follows immediately after the recipient chamber 12
  • the diameter of the first heating chamber section 22a corresponds to the diameter the recipient chamber 36.
  • the cross-sectional constriction 9 is a complete, annular step or paragraph formed.
  • the first heating chamber section 22a has a length of around 2/3 and the second heating chamber section 22b from around 1/3 of the total heating chamber length.
  • the heating chamber 22 is formed by a hollow cylindrical steel body. Both the walls of the The recipient chamber 36 as well as the heating chamber 22 are heat-resistant on the outside Insulation 14 made of or coated with ceramic materials.
  • the hollow cylindrical steel body of the heating chamber 22 is from an induction coil 30 surrounded by which the appropriate induction power for heating the heating chamber walls (26a, 26b).
  • the metallic hollow cylinder of the heater 25 is e.g. heated to a temperature of around 600 - 700 ° C.
  • the compact material is in the heating chamber 22 brought into a partially liquid / partially solid state, the first Heating chamber section 22a the liquid portion highest in the area of the heating chamber walls is.
  • This phase of partially liquid compact material in the area of the heating chamber wall 26a is also "dead" at the cross-sectional constriction 9 in the so-called flow shadow 4 Zone ", retained while molding material is firmer from the center of the cross section flows into the second heating chamber section 22b.
  • This process is through the illustration a schematic softening front 38 indicated which compact material with a high liquid content on the periphery of such with a low liquid content in the center separates.
  • a die 18 is arranged through its die opening 28 the compact material is guided into the shaping cross section.
  • the Profile strand 40 emerging from the die 18 is guided through a cooling device 24 and actively cooled by a coolant.
  • a pull-out device 44 is also arranged. Via drive rollers 42 is at the emerging Profile strand 40 in the pressing direction x a tensile force k to support the pressing process created.
  • Fig. 1b are based on a model calculation for the arrangement described in Fig. 1a determined course of the pressing pressure (p) 1 and the liquid portion (LF) 2 in the compact material shown within the pressing device 5, where a is the route section in the recipient chamber 12, b the route section in the first heating chamber section 22a, c the Route section at the cross-sectional constriction 9, d the route section in the second Heating chamber section 22a, e the section of the funnel-shaped die inlet and f corresponds to the section of the die opening.
  • the pressure of the punch 32 is around 500 bar worked.
  • the pressing pressure shows no marked drop up to the die opening 28. Only in the area of the cross-sectional constriction 9 there is a slight distance at a small distance Pressure drop.
  • the temperature of the compact material is below or at in the recipient chamber 12 the solidus temperature, so that no liquid phase is yet formed.
  • the liquid portion is continuously increased, in particular in the edge area, the Press body material in the area of the die has a homogeneous liquid content of around 45-50% reached.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)
EP01810547A 2001-06-07 2001-06-07 Dispositif et méthode de fabrication des barres métalliques profilées Withdrawn EP1264646A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP01810547A EP1264646A1 (fr) 2001-06-07 2001-06-07 Dispositif et méthode de fabrication des barres métalliques profilées
JP2002153520A JP2003033813A (ja) 2001-06-07 2002-05-28 押出しプレス装置及び方法
CA002388416A CA2388416A1 (fr) 2001-06-07 2002-05-31 Dispositif de fabrication d'un profile metallique
US10/163,771 US6637250B2 (en) 2001-06-07 2002-06-04 Device for manufacturing a metal profile
NO20022658A NO20022658L (no) 2001-06-07 2002-06-05 Anordning for fremstilling av en metallprofilstreng

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01810547A EP1264646A1 (fr) 2001-06-07 2001-06-07 Dispositif et méthode de fabrication des barres métalliques profilées

Publications (1)

Publication Number Publication Date
EP1264646A1 true EP1264646A1 (fr) 2002-12-11

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Application Number Title Priority Date Filing Date
EP01810547A Withdrawn EP1264646A1 (fr) 2001-06-07 2001-06-07 Dispositif et méthode de fabrication des barres métalliques profilées

Country Status (5)

Country Link
US (1) US6637250B2 (fr)
EP (1) EP1264646A1 (fr)
JP (1) JP2003033813A (fr)
CA (1) CA2388416A1 (fr)
NO (1) NO20022658L (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005001080A1 (de) * 2005-01-08 2006-07-20 KTI-engineering GbR (vertreterberechtigte Gesellschafter Keyhan Kouhestani, 78333 Stockach und Izzet Toksoez, 78333 Stockach) Vorrichtung mit wenigstens einem Ofen zum Erwärmen von Stranggussstangen
WO2010093244A3 (fr) * 2009-02-13 2010-12-16 Nederlandse Organisatie Voor Toegepast- Natuurwetenschappelijk Onderzoek Tno Procédé pour la fabrication de produits à base d'alliage de magnésium
US8584501B2 (en) 2008-01-14 2013-11-19 Korea Institute Of Industrial Technology Forming device for thixoextrusion and method thereof
WO2024120720A1 (fr) * 2022-12-08 2024-06-13 Biotronik Ag Procédé et appareil de production d'un cylindre creux pour une application médicale

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CA2468006A1 (fr) * 2004-05-21 2005-11-21 Castool Commande thermique du contenant de presse a filer
GB0423222D0 (en) * 2004-10-20 2004-11-24 Bwe Ltd Continuous extrusion apparatus
US7942987B2 (en) * 2008-06-24 2011-05-17 Stratasys, Inc. System and method for building three-dimensional objects with metal-based alloys
CN101979169B (zh) * 2010-10-12 2012-07-11 重庆大学 用于管道管壁孔周围局部快速高温加热的装置
BR112013010498A2 (pt) 2010-11-04 2016-08-02 3M Innovative Properties Co método de formação de elementos filtrantes
CN102989812A (zh) * 2012-10-30 2013-03-27 无锡鸿声铝业有限公司 高温金属挤压型材保温用保温装置
US10384369B2 (en) 2012-11-30 2019-08-20 Corning Incorporated Extrusion systems and methods with temperature control
US9144833B2 (en) 2013-03-14 2015-09-29 The Electric Materials Company Dual-phase hot extrusion of metals
US9844806B2 (en) 2013-03-14 2017-12-19 The Electric Materials Company Dual-phase hot extrusion of metals
CN103143584B (zh) * 2013-04-09 2015-09-09 河南理工大学 一种用于制备组织和性能均匀合金的装置
CN104368782A (zh) * 2013-08-14 2015-02-25 增城市运豪五金塑料有限公司 压铸机一体化感应加热金属熔化射流装置
US20160361763A1 (en) 2015-06-15 2016-12-15 Stratasys, Inc. Magnetically throttled liquefier assembly
WO2017075396A1 (fr) 2015-10-30 2017-05-04 Stratasys, Inc. Pompe pour fluides visqueux à réglage de remplissage et de débit et procédés s'y rapportant
EP3723921B1 (fr) * 2017-12-15 2023-03-22 Magna International Inc Extrusion électromagnétique et son procédé de fonctionnement
US10933454B2 (en) * 2018-10-05 2021-03-02 Exco Technologies Limited Extrusion press container and liner for same, and method

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US3668748A (en) * 1969-09-12 1972-06-13 American Standard Inc Process for producing whisker-reinforced metal matrix composites by liquid-phase consolidation
GB1340122A (en) * 1970-02-21 1973-12-12 Fuchs Gmbh Extrusion press for extruding preheated billets of high strength metals
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EP0839589A1 (fr) * 1996-11-04 1998-05-06 Alusuisse Technology & Management AG Procédé pour la fabrication d'une corde profilée en métal

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US3668748A (en) * 1969-09-12 1972-06-13 American Standard Inc Process for producing whisker-reinforced metal matrix composites by liquid-phase consolidation
GB1340122A (en) * 1970-02-21 1973-12-12 Fuchs Gmbh Extrusion press for extruding preheated billets of high strength metals
JPH01309717A (ja) * 1988-06-08 1989-12-14 Furukawa Electric Co Ltd:The 半溶融金属の押し出し金型
JPH08243634A (ja) * 1995-03-08 1996-09-24 Showa Electric Wire & Cable Co Ltd アルミシースプレス機
EP0839589A1 (fr) * 1996-11-04 1998-05-06 Alusuisse Technology & Management AG Procédé pour la fabrication d'une corde profilée en métal

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005001080A1 (de) * 2005-01-08 2006-07-20 KTI-engineering GbR (vertreterberechtigte Gesellschafter Keyhan Kouhestani, 78333 Stockach und Izzet Toksoez, 78333 Stockach) Vorrichtung mit wenigstens einem Ofen zum Erwärmen von Stranggussstangen
US8584501B2 (en) 2008-01-14 2013-11-19 Korea Institute Of Industrial Technology Forming device for thixoextrusion and method thereof
US8650927B1 (en) 2008-01-14 2014-02-18 Korea Institute Of Industrial Technology Forming device for thixoextrusion and method thereof
DE112008003618B4 (de) 2008-01-14 2019-02-21 Korea Institute Of Industrial Technology Formapparatur zur Thixoextrusion
WO2010093244A3 (fr) * 2009-02-13 2010-12-16 Nederlandse Organisatie Voor Toegepast- Natuurwetenschappelijk Onderzoek Tno Procédé pour la fabrication de produits à base d'alliage de magnésium
WO2024120720A1 (fr) * 2022-12-08 2024-06-13 Biotronik Ag Procédé et appareil de production d'un cylindre creux pour une application médicale

Also Published As

Publication number Publication date
US6637250B2 (en) 2003-10-28
CA2388416A1 (fr) 2002-12-07
JP2003033813A (ja) 2003-02-04
US20020189313A1 (en) 2002-12-19
NO20022658D0 (no) 2002-06-05
NO20022658L (no) 2002-12-09

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