Global Patent Index - EP 0714990 A1

EP 0714990 A1 19960605 - Method for making an abrasion resistant steel

Title (en)

Method for making an abrasion resistant steel

Title (de)

Verfahren zum Herstellen abriebfester Stähle

Title (fr)

Procédé de fabrication d'aciers résistant à l'abrasion

Publication

EP 0714990 A1 19960605 (EN)

Application

EP 95120542 A 19910812

Priority

  • EP 95120542 A 19910812
  • EP 91307393 A 19910812
  • JP 14839990 A 19900606

Abstract (en)

A method of making an abrasion resistant steel comprises the steps of: heating a slab having a chemical composition of about 0.05 to 0.45 wt.% C, 0.1 to 1.0 wt.% Si, 0.1 to 2.0 wt.% Mn, 0.05 to 1.5 wt.% Ti and the balance Fe to 1000 to 1300 DEG C, hot rolling a slab into a hot rolled product of which finishing temperature is in a range of from the Ar3 point to 1000 DEG C and directly quenching the hot rolled product, or air cooling and reheating above the Ac3 point followed by quenching the hot rolled product, or air cooling the hot rolled product, or directly quenching and tempering the hot rolled product at below the Ac1 point air cooling and reheating the hot rolled product at above the Ac3 point followed by quenching and tempering the hot rolled product at below the Ac1 point. <IMAGE>

IPC 1-7

C21D 1/02; C21D 8/02; C22C 38/14

IPC 8 full level

C21D 8/02 (2006.01); C22C 38/14 (2006.01); C21D 1/02 (2006.01)

CPC (source: EP)

C21D 8/0226 (2013.01); C21D 8/0263 (2013.01); C22C 38/14 (2013.01); C21D 1/02 (2013.01)

Citation (search report)

  • [A] DE 861706 C 19530105 - GUSSSTAHLWERK BOCHUMER VER AG
  • [AD] PATENT ABSTRACTS OF JAPAN vol. 011, no. 369 (C - 461) 2 December 1987 (1987-12-02)
  • [AD] PATENT ABSTRACTS OF JAPAN vol. 012, no. 446 (C - 546) 24 November 1988 (1988-11-24)
  • [AD] PATENT ABSTRACTS OF JAPAN vol. 013, no. 399 (C - 632)<3747> 5 September 1989 (1989-09-05)
  • [X] DATABASE WPI Section Ch Derwent World Patents Index; Class M24, AN 71-50199S
  • [A] PATENT ABSTRACTS OF JAPAN vol. 006, no. 174 (C - 123)<1052> 8 September 1982 (1982-09-08)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 012, no. 312 (C - 523) 24 August 1988 (1988-08-24)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 011, no. 273 (C - 445) 4 September 1987 (1987-09-04)
  • [A] BECHET ET AL, STAHL UND EISEN, vol. 104, no. 22, - 29 October 1984 (1984-10-29), DÜSSELDORF DE, pages 1176 - 1184

Designated contracting state (EPC)

DE FR SE

DOCDB simple family (publication)

EP 0714990 A1 19960605

DOCDB simple family (application)

EP 95120542 A 19910812