EP0946311A1 - Verfahren zum herstellen eines blechformteiles durch umformen - Google Patents
Verfahren zum herstellen eines blechformteiles durch umformenInfo
- Publication number
- EP0946311A1 EP0946311A1 EP97954916A EP97954916A EP0946311A1 EP 0946311 A1 EP0946311 A1 EP 0946311A1 EP 97954916 A EP97954916 A EP 97954916A EP 97954916 A EP97954916 A EP 97954916A EP 0946311 A1 EP0946311 A1 EP 0946311A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet metal
- forming
- different
- sheet
- strength
- 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.)
- Granted
Links
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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
-
- 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
- B21D22/20—Deep-drawing
- B21D22/26—Deep-drawing for making peculiarly, e.g. irregularly, shaped articles
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/673—Quenching devices for die quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2221/00—Treating localised areas of an article
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2221/00—Treating localised areas of an article
- C21D2221/02—Edge parts
Definitions
- the invention relates to a method for producing a sheet metal part that has different material thicknesses according to the strength or rigidity requirements by deep drawing.
- the generic manufacturing method is used in particular for lightweight construction and is used in a special way in the manufacture of vehicle bodies. While it was previously customary to design a sheet metal part in terms of its thickness according to the area / section of the highest mechanical requirements, it has meanwhile started to differentiate with regard to the material thicknesses with regard to the locally different rigidity requirements.
- a corresponding method is described for example in DE 43 07 563 C2.
- the patent explains a method for manufacturing a sheet metal structural part, which partially has a multiple sheet metal structure, consisting of a base sheet and in places a reinforcing sheet or a plurality of reinforcing sheets connected thereto, the base sheet and the reinforcing sheet or the reinforcing sheets being deep-drawn together.
- the reinforcement plate or the reinforcement plates are at least partially attached to the base plate before the common deep-drawing and are permanently connected to the base plate after the deep-drawing.
- EP 0 486 093 B1 describes a method in which partial areas of a molded part are reinforced by means of a reinforcing structural member, which is deformed separately from a plate body to be covered and is only then connected to the plate body, which has also been formed. With this approach, the molding process is complicated and time-consuming.
- the invention is based on the object of providing a further method for producing a sheet metal part which has different material thicknesses in accordance with the strength or rigidity requirements and which can be carried out inexpensively and with regard to the shaping process without any problems.
- DE 44 25 033 A1 also describes a method and a device for the press-forming of workpieces, a workpiece being clamped in a clamping device and shaped by at least one pressing tool.
- a laser beam device is provided, through which a laser beam is applied to the workpiece and heated in order to increase the yield stress lower and improve the formability.
- the forming temperature can be adapted and regulated to different materials.
- the workpiece can be heated locally in the areas of high degrees of deformation.
- DE 43 16 829 A1 also describes a method for material processing with diode radiation, it being possible for the beam profile to be adapted to the processing process. Possible applications are: Forming and bending a workpiece, laser flame cutting, welding workpieces, removing impurities or coatings on workpieces, local heating to support workpiece machining and soldering workpieces.
- the yield point is reduced locally by changing the martensite or ferrite content locally or by changing the martensite hardness of the martensitic phase components
- the sheet is formed in two steps. After a first deformation with a small degree of deformation, the subsequent final shaping - after the properties of the sheet to be deformed have been changed accordingly by a local temperature increase - with a high degree of deformation, especially in the areas where a reduction in material thickness is sought.
- Variant A - Local heating after one of the last rolling steps The aim of this variant is to change the yield point locally by heat, which is introduced into a coil or sheet plate after one of the last rolling steps, but before the sheet finishing.
- ZStE 180 BH (bake hardening) and DP 500 an increase in the yield strengths of around 25% based on the initial values can be observed in a temperature range between 200 ° C and 400 ° C. While no further changes in strength occur at higher temperatures in the case of bake hardening steel, the values in the dual-phase steel drop again by up to 25% of the highest yield strength values from temperatures above 550 ° C.
- the aim of this variant is to change the yield point locally
- the temperature - in order to achieve a local flowability - should preferably be selected between 100 ° C and 200 ° C, with a reduction in strength of up to 8% compared to the initial state being expected.
- the moderate temperatures required in this case can be tolerated by the forming tool.
- temperatures of around 200 ° C or around 500 ° C or more are required for dual-phase steel in order to achieve a reasonable increase in local elongation in certain areas.
- a reduction in strength of at least 10% from 550 ° C by at least 20% to the initial state can be seen.
- TRIP 800 and CP 1000 require a temperature of approx. 500 ° C in order to achieve a sensible local expansion. This leads to a reduction in strength of approx. 22% or 28% compared to the initial state.
- Variant B is definitely applicable for the bake hardening steel and conditionally applicable for the dual-phase steel. Variant B is less suitable for the highest strength variants TRIP 800 and CP 1000, which require temperatures above 500 ° C to lower the strength values. The temperatures required are too high for use in the forming tool. As a war meeinbringu ⁇ gsario (temperature range: approx. 100 ° C to 250 ° C) the following is conceivable: oil bath, hair dryer.
- the temperature range between approx. 350 ° C and 450 ° C appears to be irrelevant for a local change in strain for all the steel grades mentioned. In this area there is no reduction in strength, but rather a maximum strength that can be justified by the bake hardening effect.
- variant C The goal of variant C is to form the sheet in two steps. After the first forming step, you can proceed as in variant B.
- R p proof stress e.g. R P0 ⁇ 2 ⁇ strain
- a practical embodiment can consist in that the sheet material is lowered locally in the yield point after one of the last rolling steps by local heating in a furnace with different heating zones by means of a burner arrangement, inductive heating or by high-energy radiation sources.
- the areas in which the strength has been reduced can be identified by the deep-drawing press or presses by means of corresponding markings on the surface of the sheet metal, so that the sheet metal can be appropriately positioned in the forming tool.
- a practical version of variants B and C can be that the sheet metal material is heated immediately before the local heating Forming in a furnace with different heating zones by means of a burner arrangement is changed inductively or locally by means of high-energy radiation sources, or in that this takes place during the forming by the action of appropriate heat sources.
- FIG. 1 a a sheet metal plate 1 with an initial sheet thickness d 0 and with heat-treated areas 1.1, 1.2, 1.3 is shown in FIG. 1 a, while in FIG. 1 b the sheet metal sheet 1 formed into a sheet metal part 2 is shown in a sectional view , from which it can be seen that areas with different sheet thicknesses d1, d2 and d3 have also arisen.
- FIG. 2 shows, using two examples, FIGS. 2a and 2b, different yield strengths with different hardening behavior, as they occur in different areas of the sheet metal plate 1 after the corresponding heat treatment. Areas in which both material areas can flow plastically are hatched. This is illustrated using ⁇ / ⁇ diagrams.
- the tension applied must be greater than the higher of the two
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19653543A DE19653543A1 (de) | 1996-12-20 | 1996-12-20 | Verfahren zum Herstellen eines Blechformteiles durch Tiefziehen |
DE19653543 | 1996-12-20 | ||
PCT/EP1997/007029 WO1998028097A1 (de) | 1996-12-20 | 1997-12-15 | Verfahren zum herstellen eines blechformteiles durch umformen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0946311A1 true EP0946311A1 (de) | 1999-10-06 |
EP0946311B1 EP0946311B1 (de) | 2000-10-25 |
Family
ID=7815695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97954916A Expired - Lifetime EP0946311B1 (de) | 1996-12-20 | 1997-12-15 | Verfahren zum herstellen eines blechformteiles durch umformen |
Country Status (6)
Country | Link |
---|---|
US (1) | US6185977B1 (de) |
EP (1) | EP0946311B1 (de) |
JP (1) | JP2001506543A (de) |
DE (2) | DE19653543A1 (de) |
ES (1) | ES2151299T3 (de) |
WO (1) | WO1998028097A1 (de) |
Families Citing this family (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6033499A (en) * | 1998-10-09 | 2000-03-07 | General Motors Corporation | Process for stretch forming age-hardened aluminum alloy sheets |
DE19846900C2 (de) * | 1998-10-12 | 2000-08-10 | Thyssenkrupp Stahl Ag | Verfahren und Vorrichtung zum Herstellen eines Metallbandes für abzulängende Tailored Blanks |
DE10006348C2 (de) * | 2000-02-12 | 2001-12-06 | Daimler Chrysler Ag | Bauteil mit lokal begrenzten Versteifungsbereichen und Verfahren zu seiner Herstellung |
SE0000570L (sv) * | 2000-02-22 | 2001-08-23 | Avesta Sheffield Ab | Ämnesstyrd formning |
EP1296798B1 (de) | 2000-07-06 | 2009-02-18 | Trico Products Company | Verfahren und vorrichtung zur flexiblen fertigung von gekrümmten einzelartikeln |
JP2002241835A (ja) * | 2001-02-20 | 2002-08-28 | Aisin Takaoka Ltd | ワークの部分強化方法 |
FR2837500B1 (fr) * | 2002-03-21 | 2004-12-03 | Usinor | Tole ecrouie en acier calme a l'aluminium et procede de fabrication d'un emballage a partir de cette tole |
DE10302458B4 (de) * | 2003-01-23 | 2006-10-26 | Schuler Held Lasertechnik Gmbh & Co. Kg | Maschine und Verfahren zur Massivumformung |
US7523850B2 (en) * | 2003-04-07 | 2009-04-28 | Luxfer Group Limited | Method of forming and blank therefor |
DE102004005568A1 (de) * | 2004-02-05 | 2005-09-08 | Daimlerchrysler Ag | Verbindungsbereich auf einem Bauteil, sowie Verfahren und Werkzeug zu seiner Herstellung |
DE102004007071B4 (de) * | 2004-02-13 | 2006-01-05 | Audi Ag | Verfahren zur Herstellung eines Bauteils durch Umformen einer Platine und Vorrichtung zur Durchführung des Verfahrens |
DE102004026762A1 (de) * | 2004-06-02 | 2006-02-09 | Bayerische Motoren Werke Ag | Umform- und/oder Trennwerkzeug |
DE102004029458B4 (de) * | 2004-06-18 | 2017-02-02 | Hfs Hotforming Solutions Gmbh | Bauteil einer Fahrzeugkarosserie und Verfahren zu seiner Herstellung |
DE102004037206A1 (de) * | 2004-07-30 | 2006-03-23 | Muhr Und Bender Kg | Fahrzeugkarosserie |
JP4591020B2 (ja) * | 2004-09-30 | 2010-12-01 | Jfeスチール株式会社 | テーラードブランク材のプレス成形方法 |
DE102006018809A1 (de) * | 2006-04-22 | 2007-10-31 | Schaeffler Kg | Verfahren zur Herstellung eines Kraftfahrzeug-Schwenklagers in Schalenbauweise |
DE102007017661A1 (de) * | 2007-04-12 | 2008-10-16 | J. Eberspächer GmbH & Co. KG | Tiefziehblechbauteil in Schalenbauweise |
DE102008005116B4 (de) | 2008-01-14 | 2010-01-28 | Salzgitter Flachstahl Gmbh | Verfahren und Einrichtung zur Herstellung eines Metallbandes mit über Länge und Breite unterschiedlichen Materialeigenschaften |
JP4563469B2 (ja) * | 2008-05-16 | 2010-10-13 | トヨタ自動車株式会社 | プレス加工方法及びプレス加工品 |
DE102009016027A1 (de) * | 2009-04-02 | 2010-10-07 | Volkswagen Ag | Verfahren zur Herstellung eines Bauteils, insbesondere eines Karosserieteiles, sowie Fertigungsstraße zur Durchführung des Verfahrens |
JP5416498B2 (ja) * | 2009-07-23 | 2014-02-12 | 本田技研工業株式会社 | テーラードブランク板の成形方法及びその装置 |
DE102010007955B4 (de) * | 2010-02-12 | 2014-08-21 | Johnson Controls Gmbh | Verfahren zur Herstellung eines Bauteils sowie Vorrichtung |
DE102011086813A1 (de) * | 2011-11-22 | 2013-05-23 | Ford Global Technologies, Llc | Einstückiges Blechbauteil für ein Fahrzeug |
DE102012009744A1 (de) * | 2012-03-15 | 2013-09-19 | Johnson Controls Gmbh | Struktur eines Fahrzeugsitzteils |
DE102013008853A1 (de) * | 2013-05-23 | 2014-11-27 | Linde Aktiengesellschaft | Anlage und Verfahren zum Warmumformen von Platinen |
JP6194526B2 (ja) * | 2013-06-05 | 2017-09-13 | 高周波熱錬株式会社 | 板状ワークの加熱方法及び加熱装置並びにホットプレス成形方法 |
DE102013010919B4 (de) * | 2013-06-29 | 2018-10-18 | Volkswagen Aktiengesellschaft | Verfahren zur Bearbeitung eines Werkstückes sowie ein mit diesem Verfahren hergestelltes Formteil |
DE102014201611A1 (de) * | 2014-01-30 | 2015-07-30 | Volkswagen Aktiengesellschaft | Bidirektionale Tailored Rolled Platine |
DE102015004696A1 (de) | 2015-04-11 | 2015-12-03 | Daimler Ag | Verfahren zur Herstellung eines Blechbauteils |
KR20190039666A (ko) * | 2016-08-09 | 2019-04-15 | 오토테크 엔지니어링 에이.아이.이. | 블랭크들의 센터링 및 선택적 가열 |
EP3559283A1 (de) * | 2016-12-22 | 2019-10-30 | Autotech Engineering S.L. | Verfahren zum erwärmen eines rohlings und heizsystem |
DE102017207358B4 (de) | 2017-05-02 | 2023-07-06 | Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Coburg | Verfahren zum Herstellen eines Kinematikteils einer Verstellkinematik eines Fahrzeugsitzes |
KR102245033B1 (ko) * | 2017-12-14 | 2021-04-27 | 타타 스틸 리미티드 | 가공물의 항복강도를 향상시키는 방법, 장치, 및 그 가공물 |
WO2020049344A1 (en) * | 2018-09-07 | 2020-03-12 | Arcelormittal | Method for improving the formability of steel blanks |
CN113510187B (zh) * | 2021-04-29 | 2023-06-23 | 中国航发北京航空材料研究院 | 一种提高金属薄壁型材下陷成形质量的方法及其装置 |
DE102021132658A1 (de) | 2021-12-10 | 2023-06-15 | Schaeffler Technologies AG & Co. KG | Bipolarplatte und Verfahren zum Prägen einer Kanalstruktur |
CN114346070A (zh) * | 2021-12-29 | 2022-04-15 | 宁波信泰机械有限公司 | 一种汽车立柱内板的分区成型方法 |
DE102022131931A1 (de) | 2022-12-02 | 2024-06-13 | Audi Aktiengesellschaft | Verfahren zum Herstellen eines Bauteils |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1501622A (en) * | 1972-02-16 | 1978-02-22 | Int Harvester Co | Metal shaping processes |
DE2332287C3 (de) * | 1973-06-25 | 1980-06-04 | Wuerttembergische Metallwarenfabrik, 7340 Geislingen | Verfahren und Vorrichtung zum Tiefziehen von Stahlblechen |
IT1193561B (it) * | 1980-11-28 | 1988-07-08 | Ligure Tubettificio | Processo per la fabbricazione di corpi metallici cavi monoblocco a pareti sottili,per contenitori a pressione |
DE3325820A1 (de) * | 1982-09-27 | 1984-03-29 | Kraftwerk Union AG, 4330 Mülheim | Verfahren zum tiefziehen von blech und vorrichtung zur durchfuehrung dieses verfahrens |
US4522049A (en) * | 1983-03-14 | 1985-06-11 | Aluminum Company Of America | Aluminum alloy food can body and method for making same |
EP0159818B1 (de) * | 1984-04-04 | 1988-10-26 | Imi Titanium Limited | Verfahren und Gerät zur Herstellung von Metallerzeugnissen |
DE4307563C2 (de) * | 1992-03-12 | 1994-09-22 | Bayerische Motoren Werke Ag | Verfahren zum Fertigen eines Blechstrukturteils, das partiell eine Mehrfachblechstruktur aufweist, sowie nach dem Verfahren hergestelltes Blechstrukturteil |
DE4228396C2 (de) * | 1992-08-26 | 2002-05-29 | Bayerische Motoren Werke Ag | Verfahren zum Fertigen eines Blech-Strukturteiles, sowie Verwendung eines nach dem Verfahren hergestellten Bauteils |
DE4425033C2 (de) * | 1994-07-15 | 1999-07-29 | Fraunhofer Ges Forschung | Verfahren und Vorrichtung zum Drückumformen von Werkstücken |
-
1996
- 1996-12-20 DE DE19653543A patent/DE19653543A1/de not_active Withdrawn
-
1997
- 1997-12-15 ES ES97954916T patent/ES2151299T3/es not_active Expired - Lifetime
- 1997-12-15 WO PCT/EP1997/007029 patent/WO1998028097A1/de active IP Right Grant
- 1997-12-15 EP EP97954916A patent/EP0946311B1/de not_active Expired - Lifetime
- 1997-12-15 DE DE59702545T patent/DE59702545D1/de not_active Expired - Lifetime
- 1997-12-15 JP JP52833498A patent/JP2001506543A/ja active Pending
- 1997-12-15 US US09/331,544 patent/US6185977B1/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9828097A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2001506543A (ja) | 2001-05-22 |
WO1998028097A1 (de) | 1998-07-02 |
US6185977B1 (en) | 2001-02-13 |
DE59702545D1 (de) | 2000-11-30 |
ES2151299T3 (es) | 2000-12-16 |
DE19653543A1 (de) | 1998-06-25 |
EP0946311B1 (de) | 2000-10-25 |
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