Global Patent Index - EP 1157761 A1

EP 1157761 A1 20011128 - Method of attaining a reduction of the rupture and tensile strength of an ultra-high strength steel blank

Title (en)

Method of attaining a reduction of the rupture and tensile strength of an ultra-high strength steel blank

Title (de)

Verfahren zur Herabsetzung der Bruchneigung sowie der Zugfestigkeit eines Bleches aus hochfestem Stahl

Title (fr)

Méthode de réduire la rupture et la résistance à la tension d'une tôle en acier à haute résistance mécanique

Publication

EP 1157761 A1 20011128 (EN)

Application

EP 01117282 A 19980706

Priority

  • EP 98934043 A 19980706
  • SE 9702635 A 19970704
  • SE 9703445 A 19970924

Abstract (en)

The present invention refers to a method for attaining a reduction of the rupture and tensile limit of a blank or profile of an ultra-high strength material. According to the method the blank or profile is exposed to a heat treatment by heating to above 300 DEG C within selected portions of the sheet. <IMAGE>

IPC 1-7

B21D 22/20

IPC 8 full level

F16C 13/00 (2006.01); B21D 5/08 (2006.01); B21D 5/12 (2006.01); B21D 47/01 (2006.01); B21D 51/10 (2006.01); B21D 51/36 (2006.01)

CPC (source: EP)

B21D 5/08 (2013.01); B21D 5/083 (2013.01); B21D 51/36 (2013.01)

Citation (search report)

Citation (third parties)

Third party :

  • DATABASE METADEX [online] BERGMANN H.W.; ELTZE K.: "Annealing by Laser Treatment", XP002968642 & CONFERENCE LASER TREATMENT OF MATERIALS, 1986, BAD NAUHEIM, pages 419 - 425
  • BERGMANN H.W.; ELTZE K.: "Annealing by Laser Treatment", CONFERENCE LASER TREATMENT OF MATERIALS, 1986, pages 419, XP002968643

Designated contracting state (EPC)

AT DE DK ES FI FR GB IT

DOCDB simple family (publication)

WO 9901242 A1 19990114; AT E249898 T1 20031015; DE 69818281 D1 20031023; DE 69818281 T2 20040722; EP 1011891 A1 20000628; EP 1011891 B1 20030917; EP 1157761 A1 20011128; JP 2001515790 A 20010925; JP 4173277 B2 20081029; SE 512543 C2 20000403; SE 9703445 D0 19970924; SE 9703445 L 19990105

DOCDB simple family (application)

SE 9801329 W 19980706; AT 98934043 T 19980706; DE 69818281 T 19980706; EP 01117282 A 19980706; EP 98934043 A 19980706; JP 2000500994 A 19980706; SE 9703445 A 19970924