Method for the case-hardening of higher-molybdenum-alloy sintered steels

摘要

PCT No. PCT/DE96/00916 Sec. 371 Date Feb. 6, 1997 Sec. 102(e) Date Feb. 6, 1997 PCT Filed May 25, 1996 PCT Pub. No. WO96/41031 PCT Pub. Date Dec. 19, 1996The invention relates to a method for the case-hardening of higher-molybdenum-alloy sintered steels. It is provided that, immediately after the sintering, the sintered steels are cooled down to a temperature range at which a minimum portion of gamma -iron is present in sintered steel and that the sintered steels are subjected to a heat treatment in this temperature range in the presence of carbon.