EP 0096602 B1 19851016 - METHOD OF HEAT TREATING METALLIC PARTS BY CARBURIZATION
Title (en)
METHOD OF HEAT TREATING METALLIC PARTS BY CARBURIZATION
Publication
Application
Priority
FR 8209328 A 19820528
Abstract (en)
[origin: US4519853A] The method of carburizing steel workpieces comprises loading workpieces to be carburized in a furnace and maintaining them in a carbon enriching atmosphere comprising carbon monoxide, hydrogen and nitrogen. The treatment comprises a first phase carried out at a temperature from 850 DEG C. to 1050 DEG C. followed by a second phase carried out at a temperature from 700 DEG C. to 950 DEG C. During the first phase an atmosphere is used having a carbon potential from about 1.1% to about 1.6% by weight and during the second phase the amount of nitrogen in the atmosphere is increased from two to thirty times so that the carbon potential for the second phase is at least about 0.5% by weight less than the carbon potential for the first phase.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
C23C 8/22 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0096602 A1 19831221; EP 0096602 B1 19851016; AT E16118 T1 19851115; AU 1489083 A 19831201; AU 560555 B2 19870409; CA 1208528 A 19860729; DE 3361023 D1 19851121; FR 2527641 A1 19831202; FR 2527641 B1 19850222; JP H064906 B2 19940119; JP S58213870 A 19831212; US 4519853 A 19850528; US 4519853 B1 19871229; ZA 833445 B 19840229
DOCDB simple family (application)
EP 83400935 A 19830509; AT 83400935 T 19830509; AU 1489083 A 19830523; CA 429018 A 19830526; DE 3361023 T 19830509; FR 8209328 A 19820528; JP 9339283 A 19830528; US 49693483 A 19830523; ZA 833445 A 19830513