EP 0779937 B1 20010926 - PROCESS FOR CASE HARDENING HIGHER MOLYBDENUM-ALLOYED SINTERED STEELS
Title (en)
PROCESS FOR CASE HARDENING HIGHER MOLYBDENUM-ALLOYED SINTERED STEELS
Title (de)
VERFAHREN ZUM EINSATZHÄRTEN VON HÖHERMOLYBDÄNLEGIERTEN SINTERSTÄHLEN
Title (fr)
PROCEDE POUR CEMENTER DES ACIERS FRITTES AU MOLYBDENE FORTEMENT ALLIES
Publication
Application
Priority
- DE 9600916 W 19960525
- DE 19520354 A 19950607
Abstract (en)
[origin: DE19520354A1] The invention concerns a process for case hardening higher molybdenum-alloyed sintered steels. Immediately after sintering, the sintered steels are cooled to a temperature range in which the sintered steel has a minimum content of gamma -iron. In this temperature range the sintered steels are subjected to a heat treatment in the presence of carbon.
IPC 1-7
IPC 8 full level
B22F 3/24 (2006.01); B22F 3/10 (2006.01); C21D 1/78 (2006.01); C22C 33/02 (2006.01); C23C 8/20 (2006.01); C23C 8/22 (2006.01)
CPC (source: EP US)
B22F 3/101 (2013.01 - EP US); C21D 1/78 (2013.01 - EP US); C22C 33/02 (2013.01 - EP US); C23C 8/20 (2013.01 - EP US); B22F 2201/013 (2013.01 - EP US); B22F 2201/20 (2013.01 - EP US); B22F 2201/30 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE ES FR GB IT LI SE
DOCDB simple family (publication)
DE 19520354 A1 19961212; DE 19520354 C2 19970710; DE 59607766 D1 20011031; EP 0779937 A1 19970625; EP 0779937 B1 20010926; ES 2164895 T3 20020301; JP H10504064 A 19980414; TW 384312 B 20000311; US 5881356 A 19990309; WO 9641031 A1 19961219
DOCDB simple family (application)
DE 19520354 A 19950607; DE 59607766 T 19960525; DE 9600916 W 19960525; EP 96919584 A 19960525; ES 96919584 T 19960525; JP 50006997 A 19960525; TW 85106846 A 19960607; US 77675697 A 19970206