Global Patent Index - EP 2241641 A2

EP 2241641 A2 20101020 - Method for manufacturing press hardened components

Title (en)

Method for manufacturing press hardened components

Title (de)

Verfahren zur Herstellung von pressgehärteten Bauteilen

Title (fr)

Procédé de fabrication de composants durcis par une presse

Publication

EP 2241641 A2 20101020 (DE)

Application

EP 10002910 A 20100319

Priority

DE 102009017326 A 20090416

Abstract (en)

The method for the production of car body component of a motor vehicle from a plate made of untempered, heat formable steel plate, comprises forming and hardening the plate in a press tool to sheet-metal profile. The plate is provided, whose geometry corresponds to the development of the finished component and subsequently the plate is remodeled and press-hardened in a hot working tool to component, which is provided with a surface coating. The component is cooled during press-hardening at 200[deg] C. The surface coating is applied through a diffusion process. The method for the production of car body component of a motor vehicle from a plate made of untempered, heat formable steel plate, comprises forming and hardening the plate in a press tool to sheet-metal profile. The plate is provided, whose geometry corresponds to the development of the finished component and subsequently the plate is remodeled and press-hardened in a hot working tool to component, which is provided with a surface coating. The component is cooled during press-hardening at 200[deg] C. The surface coating is applied through a diffusion process with a heat treatment of the component in which the component is applied in contact with a metal powder. The diffusion process is carried out at 350-410[deg] C and the heat treatment is carried out over a period of 0.25-3.0 h. The coated component is cooled after the heat treatment at 200[deg] C. The cooling of the component is carried out under inert-gas atmosphere. The plate is perforated before or after the forming process. The press-hardening is carried out so that the areas emerge with different stabilities on the component.

Abstract (de)

Die Erfindung betrifft ein Verfahren zur Herstellung von pressgehärteten Bauteilen, insbesondere Karosseriebauteilen von Kraftfahrzeugen, aus einer Platine aus ungehärtetem, warmumformbaren Stahlblech, wobei die Platine in einem Pressenwerkzeug zum Blechprofil warm umgeformt und gehärtet wird. Hierbei wird zunächst eine Platine gefertigt, deren Geometrie der Abwicklung des fertigen Bauteils entspricht. Anschließend wird diese Platine in einem Warmumform-Werkzeug zum Bauteil umgeformt und pressgehärtet, wonach das Bauteil mit einer Oberflächenbeschichtung versehen wird. Der gesamte randseitige Konturbeschnitt des Bauteils erfolgt vor dem Umform- und/oder Presshärtungsvorgang.

IPC 8 full level

C21D 1/02 (2006.01); B21D 22/02 (2006.01); B21D 35/00 (2006.01); B21D 53/88 (2006.01); C21D 1/673 (2006.01); C21D 8/02 (2006.01)

CPC (source: EP US)

B21D 22/022 (2013.01 - EP US); B21D 35/00 (2013.01 - EP US); B21D 53/88 (2013.01 - EP US); C21D 1/18 (2013.01 - EP US); C21D 1/673 (2013.01 - EP US); C21D 1/74 (2013.01 - EP US); C21D 8/0205 (2013.01 - EP US); C21D 8/0257 (2013.01 - EP US); C21D 8/0405 (2013.01 - EP US); C21D 9/0068 (2013.01 - EP US); C21D 9/46 (2013.01 - EP US); C21D 9/48 (2013.01 - EP US); C23C 10/28 (2013.01 - EP US)

Citation (applicant)

Citation (third parties)

Third party :

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

Designated extension state (EPC)

AL BA ME RS

DOCDB simple family (publication)

EP 2241641 A2 20101020; EP 2241641 A3 20120502; EP 2241641 B1 20150429; DE 102009017326 A1 20101021; ES 2538341 T3 20150619; US 2010319426 A1 20101223; US 9822421 B2 20171121

DOCDB simple family (application)

EP 10002910 A 20100319; DE 102009017326 A 20090416; ES 10002910 T 20100319; US 79808210 A 20100329