EP3122490B1 - Procédé et dispositif de façonnage de tronçons profilés extrudés en magnésium ou alliage de magnésium - Google Patents
Procédé et dispositif de façonnage de tronçons profilés extrudés en magnésium ou alliage de magnésium Download PDFInfo
- Publication number
- EP3122490B1 EP3122490B1 EP15714395.9A EP15714395A EP3122490B1 EP 3122490 B1 EP3122490 B1 EP 3122490B1 EP 15714395 A EP15714395 A EP 15714395A EP 3122490 B1 EP3122490 B1 EP 3122490B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber profile
- tool
- profile sections
- hollow
- hollow chamber
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 27
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims description 8
- 229910000861 Mg alloy Inorganic materials 0.000 title claims description 7
- 229910052749 magnesium Inorganic materials 0.000 title claims description 7
- 239000011777 magnesium Substances 0.000 title claims description 7
- 238000010276 construction Methods 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000004080 punching Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000004049 embossing Methods 0.000 claims 1
- 238000003754 machining Methods 0.000 claims 1
- 238000005304 joining Methods 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 8
- 238000001125 extrusion Methods 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000003027 ear inner Anatomy 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
-
- 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
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
- B21C35/02—Removing or drawing-off work
- B21C35/023—Work treatment directly following extrusion, e.g. further deformation or surface treatment
-
- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
-
- 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
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
Definitions
- the invention relates to a method and a device for processing extruded hollow chamber profile sections made of magnesium or magnesium alloys with regard to their outer contour by hot calibration, possibly in combination with hot stamping and / or cutting and / or punching operations for the subsequent joining processes, from which the following assemblies (lightweight components) should be joined.
- the DE 2 105 537 C3 describes a device for the hot calibration of rod-shaped rolling stock during hot rolling in the production flow of a continuous rolling mill, in which a die is arranged behind the finishing rolling stand and the hot-calibrating rod-shaped rolling stock is pushed through the die by the rollers of the finishing rolling stand, the die being designed as a closed ring die and the ring die, which can be heated to rolling temperature, consists of a highly heat-resistant material and that in front of the ring die there is a nozzle ring with an opening for the addition of thermally stable lubricants such as colloidal graphite, low-melting glass, soda, burnt lime or salts, and two labyrinths in front of the nozzle ring -Ring chambers are arranged and that the ring die is axially sprung in both directions.
- thermally stable lubricants such as colloidal graphite, low-melting glass, soda, burnt lime or salts
- the lightweight construction element consists of several extruded hollow profiles joined together in a flat arrangement.
- the associated method comprises the steps of a) extrusion of hollow profiles with a wall thickness of a maximum of 0.5% of the diameter of the circumscribed circle of the lightweight construction element made therefrom, and b) joining of several hollow profiles in a flat arrangement to form a lightweight construction element, which has a circumscribed circle of has at least 300 mm.
- the hollow profiles are joined by friction welding or gluing.
- Extruded profiles in particular multi-chamber extruded profiles, distort when they exit the die of the extrusion press. This leads to problems in a subsequent joining process in which flat assemblies are to be assembled from the extruded profile sections.
- light metals Compared to the steel materials most commonly used today, light metals have the advantage that they have a significantly lower density.
- the lightest of these metals is magnesium; it is around 35% lighter than aluminum.
- Today's new magnesium alloys have very good properties, such as corrosion resistance and good deformation properties, so that they can be used for extrusion.
- a disadvantage of extrusion is that the size of the extruded profiles that can be produced is limited, so that one is forced to join assemblies from individual extruded profile sections.
- the object of the invention is to provide a method and a device for processing extruded hollow-chamber profile sections made of magnesium or magnesium alloys, whereby the hollow-chamber profile sections with regard to their outer contour by hot calibration, possibly in combination with hot stamping and / or cutting or punching operations for subsequent joining processes are directed and fixed to a uniform product size.
- Another object is to create a lightweight construction element made from the machined hollow-chamber profile sections, which is made from individual extruded profile sections by joining, whereby virtually any size lightweight construction element can be realized.
- this object is achieved in that, by means of the method, the extruded hollow chamber profile sections made of magnesium or magnesium alloys are brought to a dimensional accuracy with regard to their outer contour by hot calibration for the subsequent joining process in order to simplify the joining process. At the same time, it is possible to carry out stamping operations, cutting and / or punching operations together with hot calibration.
- the hot calibration is preferably carried out in the production flow following the extrusion. This has the advantage that the profile emerging from the die already has a temperature in the range of 250-450 ° C and does not have to be additionally heated.
- the profile sections calibrated in this way can be joined to lightweight construction elements without great effort.
- lightweight construction elements in vehicle construction can, for example, be support structures in the form of floor assemblies.
- the Associated Figure 1 shows a device for performing the method for hot calibration of extruded hollow chamber profile sections.
- the method according to the invention comprises the steps of placing the hollow-chamber profile sections 1 heated to a temperature in the range of 250 to 450 ° C in a two-part calibration tool 2 preheated to a temperature in the range of 300 to 600 ° C and applying pressure to the calibration tool 2 by means of one or more press cylinders 3 of a press 4 .
- insert elements are inserted into the end faces of the cut profile sections 1 .
- the insert elements can have peg-like extensions, the cross-sections of which are adapted to the inner cross-sections of the hollow-chamber profile sections 1 .
- the Figure 1 shows a schematic diagram of the device for performing the method.
- the device consists essentially of a press 4 and a calibration tool 2.
- the calibration tool 2 is designed in two parts and accordingly consists of two tool halves I, II which can be moved relative to one another, between which the hollow-chamber profile section 1 is inserted, whereby the tool halves are adapted to the cross-section of the profile to be calibrated.
- the tool halves are moved towards one another and the profile section is calibrated, ie the hollow-chamber profile sections are brought to a uniform size and aligned at the same time.
- the tool halves I, II have bores 5 into which the corresponding heating cartridges are inserted in order to heat the tool halves I, II or to keep them at temperature.
- one or more stamping dies can be arranged in one or both tool halves I, II, with the aid of which a surface stamping of the hollow-chamber profile sections can be carried out on one or both sides during the calibration process.
- cutting or punching tools are integrated into the tool halves I, II in order to carry out cutting or punching operations in the hollow-chamber profile sections 1 at the same time during the calibration process.
- the calibrated and / or embossed and / or perforated hollow chamber profile sections can be joined to form a lightweight construction element.
- the lightweight construction element can be designed, for example, as a support structure for a land, air or water vehicle, the individual heat-calibrated hollow chamber profile sections 1 forming the lightweight construction element being connected to one another by a permanent connection. This can preferably be done by friction stir welding, which results in short welding times and high economic efficiency in the joining process.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Extrusion Of Metal (AREA)
- Forging (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Claims (6)
- Procédé d'usinage du contour extérieur de profilés à chambre creuse extrudés en magnésium ou en alliages de magnésium par calibrage à chaud, au besoin en combinaison avec des opérations d'estampage à chaud et/ou de découpage et/ou de poinçonnage, dans lequel les profilés à chambre creuse sont chauffés à une température entre 250°C et 450°C et dans lequel les profilés à chambre creuse chauffés (1) sont introduits, dans une première étape, dans un outil de calibrage (2) en deux parties, préchauffé à une température entre 300°C et 600°C, et où des éléments d'insertion sont introduits dans les faces frontales des profilés à chambre creuse (1) coupés à longueur, et lesquels sont amenés, dans une deuxième étape, à une dimension uniforme avec un redressement simultané au moyen d'un outil de calibrage (2) qui est mis sous pression par un ou plusieurs cylindres de pression (3) d'une presse (4).
- Procédé de fabrication d'un élément de construction léger à partir de plusieurs profilés creux extrudés selon le procédé selon la revendication 1 et reliés entre eux à plat, caractérisé en ce que l'élément de construction léger est conçu comme une structure porteuse pour un véhicule terrestre, aérien ou aquatique et les différents profilés calibrés à chaud (1) formant l'élément de construction léger sont reliés entre eux par une liaison indémontable.
- Appareil pour la mise en œuvre du procédé selon la revendication 1,
caractérisé en ce que
le dispositif se compose d'une presse (4), d'éléments d'insertion et d'un outil de calibrage (2), l'outil de calibrage (2) étant constitué de deux moitiés d'outil (I, II) qui peuvent être déplacées l'une par rapport à l'autre et entre lesquelles est inséré le profilé à chambre creuse (1). - Dispositif selon la revendication 3,
caractérisé en ce que
au moins une des moitiés de l'outil (I, II) est adaptée à la section du profil de la chambre creuse (1) à calibrer. - Dispositif selon la revendication 3,
caractérisé en ce que
des matrices d'estampage sont disposées dans au moins une des moitiés d'outil (I, II) sur le côté faisant face à la section de profilé à chambre creuse (1). - Dispositif selon les revendications 3 à 5,
caractérisé en ce que
dans les moitiés (I, II) de l'outil de calibrage (2), des trous (5) sont prévus pour la réception de cartouches de chauffage.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014004329.0A DE102014004329A1 (de) | 2014-03-26 | 2014-03-26 | Verfahren und Vorrichtung zum Bearbeiten von stranggepessten Profilabschnitten aus Magnesium oder Magnesiumlegierungen und ein daraus hergestelltes Leichtbauelement |
PCT/DE2015/000070 WO2015144113A1 (fr) | 2014-03-26 | 2015-02-13 | Procédé et dispositif de façonnage de tronçons profilés extrudés à partir de magnésium ou d'alliages de magnésium et élément de construction léger fabriqué à partir de ceux-ci |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3122490A1 EP3122490A1 (fr) | 2017-02-01 |
EP3122490B1 true EP3122490B1 (fr) | 2020-10-28 |
Family
ID=52813854
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15714395.9A Active EP3122490B1 (fr) | 2014-03-26 | 2015-02-13 | Procédé et dispositif de façonnage de tronçons profilés extrudés en magnésium ou alliage de magnésium |
Country Status (8)
Country | Link |
---|---|
US (1) | US10323309B2 (fr) |
EP (1) | EP3122490B1 (fr) |
JP (1) | JP2017518183A (fr) |
KR (1) | KR20160140785A (fr) |
CN (1) | CN106132583B (fr) |
CA (1) | CA2943826C (fr) |
DE (1) | DE102014004329A1 (fr) |
WO (1) | WO2015144113A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150315666A1 (en) * | 2014-04-30 | 2015-11-05 | Ford Global Technologies, Llc | Induction annealing as a method for expanded hydroformed tube formability |
CN108393383A (zh) * | 2018-05-09 | 2018-08-14 | 新昌县大雄锻造有限公司 | 一种冲压装置 |
DE102020122711A1 (de) | 2020-08-31 | 2022-03-03 | Benteler Automobiltechnik Gmbh | Verfahren zum Kalibrieren eines metallischen Profilrohlings mit wenigstens einer massiven Wand |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005020727A1 (de) * | 2005-05-04 | 2006-11-09 | Dr.Ing.H.C. F. Porsche Ag | Stranggepresstes Mehrkammerrohr, insbesondere für einen Wärmeübertrager |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
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DE2105537C3 (de) | 1971-02-06 | 1979-01-04 | Stahlwerke Roechling - Burbach Gmbh, 6620 Voelklingen | Vorrichtung zum Warmkalibrieren von Walzgut |
US4077247A (en) * | 1975-09-30 | 1978-03-07 | United Technologies Corporation | Method and apparatus for improving the formability of sheet metal |
JPH0790324B2 (ja) * | 1991-07-29 | 1995-10-04 | 有限会社丸善鋲螺 | スポーツシューズ用スタッドの製造方法 |
DE19725300C2 (de) | 1997-06-14 | 2001-04-19 | Cfs Falkenroth Umformtechnik G | Werkzeug zum Warmkalibrieren und Warmlochen von Werkstücken |
EP0945199B1 (fr) * | 1998-03-26 | 2003-11-26 | Tokyo Seitan Inc. | Boitier forgé en alliage de magnésium et procédé pour sa fabrication |
US20010051125A1 (en) * | 1998-06-05 | 2001-12-13 | Kazuhiro Watanabe | Nonaqueous secondary battery, constituent elements of battery, and materials thereof |
JP2000246386A (ja) * | 1998-12-28 | 2000-09-12 | Tokyo Seitankosho:Kk | マグネシウム合金製薄肉成形体の製造方法および薄肉成形体 |
JP2002273540A (ja) * | 2001-03-16 | 2002-09-25 | Hitachi Metals Ltd | 凸部の成形方法及び成形体 |
DE10150021B4 (de) * | 2001-10-11 | 2005-08-04 | Peter Stolfig | Verfahren und Vorrichtung zur Herstellung von Profilen oder Blechformteilen aus Magnesium oder Magnesiumlegierungen |
CN1159119C (zh) * | 2002-01-01 | 2004-07-28 | 李成顺 | 一种对热挤压型材进行矫直的重锤牵引法 |
DE10224198C1 (de) * | 2002-05-31 | 2003-08-14 | Erbsloeh Ag | Leichtbauelement und Herstellungsverfahren |
DE10241028B3 (de) * | 2002-09-05 | 2004-07-29 | Erbslöh Ag | Verfahren zur Herstellung von bogenförmigen (gerundeten) Strukturbauteilen aus einem Strangpreßprofil |
DE10320208B3 (de) * | 2003-05-07 | 2004-08-26 | Zf Sachs Ag | Verfahren zur Herstellung eines Kolbens |
US7159437B2 (en) * | 2004-10-07 | 2007-01-09 | General Motors Corporation | Heated die for hot forming |
JP4693007B2 (ja) * | 2007-02-09 | 2011-06-01 | 株式会社日本製鋼所 | 高強度金属材の製造方法 |
DE102008045441B3 (de) | 2008-09-02 | 2010-02-18 | Otto Fuchs Kg | Verfahren zum Herstellen eines Strangpressprofilabschnittes aus einer aushärtbaren Aluminiumlegierung |
US8429822B2 (en) * | 2009-04-28 | 2013-04-30 | Hayes Lemmerz International, Inc. | Fabricated vehicle wheel, wheel rim for use in such a vehicle wheel and method for producing same |
CN201791786U (zh) * | 2010-01-25 | 2011-04-13 | 俞小元 | 型材校直机构 |
DE102010037534A1 (de) * | 2010-09-14 | 2012-03-15 | Thyssenkrupp Steel Europe Ag | Vorrichtung und Verfahren zur Herstellung von zumindest teilweise geschlossenen Hohlprofilen mit drehbaren Gesenkhälften und geringer Taktzeit |
CN102172750B (zh) * | 2011-01-27 | 2013-04-24 | 中北大学 | 镁合金构件阶梯温度成形方法 |
KR20120104799A (ko) * | 2011-03-14 | 2012-09-24 | (주)휴메릭 | 고강도 마그네슘 압출재의 진직도 향상을 위한 압출시스템 |
EP2532452B1 (fr) * | 2011-06-10 | 2014-03-12 | TRUMPF Werkzeugmaschinen GmbH + Co. KG | Procédé de poinçonnage et de dressage de tôles |
EP2630978B1 (fr) * | 2012-02-22 | 2018-10-31 | Biotronik AG | Implant et son procédé de fabrication |
CN102581207A (zh) * | 2012-03-13 | 2012-07-18 | 宜兴市宝登合金有限公司 | 城市轨道交通接触轨用钢铝复合型材的制造方法 |
-
2014
- 2014-03-26 DE DE102014004329.0A patent/DE102014004329A1/de active Pending
-
2015
- 2015-02-13 JP JP2016558029A patent/JP2017518183A/ja active Pending
- 2015-02-13 KR KR1020167029818A patent/KR20160140785A/ko unknown
- 2015-02-13 US US15/129,078 patent/US10323309B2/en active Active
- 2015-02-13 WO PCT/DE2015/000070 patent/WO2015144113A1/fr active Application Filing
- 2015-02-13 CN CN201580014686.2A patent/CN106132583B/zh active Active
- 2015-02-13 EP EP15714395.9A patent/EP3122490B1/fr active Active
- 2015-02-13 CA CA2943826A patent/CA2943826C/fr active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005020727A1 (de) * | 2005-05-04 | 2006-11-09 | Dr.Ing.H.C. F. Porsche Ag | Stranggepresstes Mehrkammerrohr, insbesondere für einen Wärmeübertrager |
Also Published As
Publication number | Publication date |
---|---|
JP2017518183A (ja) | 2017-07-06 |
EP3122490A1 (fr) | 2017-02-01 |
US20170107601A1 (en) | 2017-04-20 |
CA2943826C (fr) | 2019-05-14 |
CN106132583A (zh) | 2016-11-16 |
CN106132583B (zh) | 2020-03-24 |
WO2015144113A1 (fr) | 2015-10-01 |
CA2943826A1 (fr) | 2015-10-01 |
US10323309B2 (en) | 2019-06-18 |
KR20160140785A (ko) | 2016-12-07 |
DE102014004329A1 (de) | 2015-10-01 |
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