EP 0750683 B1 19981111 - PROCESS FOR INFLUENCING THE CHANGES IN SIZE AND SHAPE OF WORKPIECES DURING HARDENING
Title (en)
PROCESS FOR INFLUENCING THE CHANGES IN SIZE AND SHAPE OF WORKPIECES DURING HARDENING
Title (de)
VERFAHREN ZUM BEEINFLUSSEN VON MASS- UND FORMÄNDERUNGEN BEIM HÄRTEN VON WERKSTÜCKEN
Title (fr)
PROCEDE PERMETTANT D'INFLUER SUR LES CHANGEMENTS DE DIMENSIONS ET DE FORME DE PIECES PENDANT LEUR DURCISSEMENT
Publication
Application
Priority
- DE 4408924 A 19940316
- EP 9500913 W 19950311
Abstract (en)
[origin: WO9525182A1] A process and device are disclosed for influencing the changes in size and shape of workpieces during hardening. Mechanical accessories, in particular mandrel fixtures, are used for hardening workpieces. In known processes, the carburised workpieces are set on said mandrel fixtures and quenched. In order to simplify and reduce the cost of a hardening process by means of mandrel fixtures, the individual operations such as carburising, stacking of workpieces on the mandrel fixture and quenching are combined in a single process. A mechanical accessory used to carry out this process is made of a material that does not carburise together with the workpieces, i.e. the surface of the mandrel fixture is not changed into a hardened microstructure during carburising.
IPC 1-7
IPC 8 full level
C21D 1/00 (2006.01); C21D 1/18 (2006.01); C21D 1/673 (2006.01); C21D 9/00 (2006.01); C21D 9/32 (2006.01)
CPC (source: EP KR)
C21D 1/673 (2013.01 - EP KR); C21D 9/0025 (2013.01 - EP KR); C21D 9/32 (2013.01 - EP)
Designated contracting state (EPC)
AT DE ES FR GB IT SE
DOCDB simple family (publication)
WO 9525182 A1 19950921; AT E173300 T1 19981115; BR 9507081 A 19970916; DE 4408924 A1 19950921; DE 59504224 D1 19981217; EP 0750683 A1 19970102; EP 0750683 B1 19981111; ES 2124537 T3 19990201; JP H09510261 A 19971014; KR 970701794 A 19970412
DOCDB simple family (application)
EP 9500913 W 19950311; AT 95912245 T 19950311; BR 9507081 A 19950311; DE 4408924 A 19940316; DE 59504224 T 19950311; EP 95912245 A 19950311; ES 95912245 T 19950311; JP 52382695 A 19950311; KR 19960704868 A 19960904