EP 1536898 B1 20060531 - METHOD FOR THE PRODUCTION OF A PRESS-HARDENED PART
Title (en)
METHOD FOR THE PRODUCTION OF A PRESS-HARDENED PART
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES PRESSGEHÄRTETEN BAUTEILS
Title (fr)
PROCEDE DE PRODUCTION D'UN PIECE TREMPEE A LA PRESSE
Publication
Application
Priority
- DE 10242709 A 20020913
- DE 10254695 A 20021123
- EP 0309607 W 20030829
Abstract (en)
[origin: WO2004033126A1] The aim of the invention is to produce a metallic molded part, particularly a vehicle body part, from a semifinished product made of an unhardened thermally moldable steel sheet. Said aim is achieved by first shaping the semifinished product by means of a cold-deforming method, particularly by deep drawing, so as to obtain a single blank part (step II). The edge side of the blank part is then cut so as to create an edge contour which approximately corresponds to the edge contour of the part that is to be produced (step III). The cut blank part is ultimately heated and press-hardened in a thermal shaping tool (step IV). The produced part is provided with the desired edge contour as early as following the thermal shaping process such that the final step of cutting the edge of the part is eliminated, which allows the cycle times during the production of hardened parts made of steel sheet to be substantially reduced.
IPC 8 full level
B21D 22/20 (2006.01); B21D 22/26 (2006.01); B21D 24/00 (2006.01); B21D 28/00 (2006.01); B21D 35/00 (2006.01); B21D 53/88 (2006.01); C21D 1/18 (2006.01); C21D 1/673 (2006.01); C21D 1/70 (2006.01); C21D 9/00 (2006.01); C22C 38/00 (2006.01); C22C 38/58 (2006.01); C21D 7/13 (2006.01)
CPC (source: EP US)
B21D 35/00 (2013.01 - EP US); B21D 53/88 (2013.01 - EP US); C21D 1/673 (2013.01 - EP US); C21D 7/13 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
WO 2004033126 A1 20040422; DE 50303605 D1 20060706; EP 1536898 A1 20050608; EP 1536898 B1 20060531; JP 2005539145 A 20051222; JP 4319987 B2 20090826; US 2006137779 A1 20060629; US 7998289 B2 20110816
DOCDB simple family (application)
EP 0309607 W 20030829; DE 50303605 T 20030829; EP 03807811 A 20030829; JP 2004542330 A 20030829; US 52772105 A 20051020