EP 1076726 A1 20010221 - METHOD FOR CARBURIZING OR CARBONITRIDING METAL PARTS

Title (en)

METHOD FOR CARBURIZING OR CARBONITRIDING METAL PARTS

Title (de)

VERFAHREN ZUM ZEMENTIEREN ODER CARBONITRIEREN VON METALLISCHEN GEGENSTÄNDEN

Title (fr)

PROCEDE DE CEMENTATION OU CARBONITRURATION DE PIECES METALLIQUES

Publication

EP 1076726 A1 20010221 (FR)

Application

EP 99910437 A 19990326

Priority

FR 9900707 W 19990326
FR 9805231 A 19980427

Abstract (en)

[origin: FR2777910A1] Carburizing or carbo-nitriding of metal or metal alloy components involves contacting the components, at least during a carbon enrichment phase, with an enriching atmosphere made up of hydrogen and carbon monoxide. The CO/H2 ratio of the atmosphere is different by 1/2.

IPC 1-7

C21D 1/76; C23C 8/22; C23C 8/32

IPC 8 full level

C21D 1/06 (2006.01); C21D 1/76 (2006.01); C23C 8/20 (2006.01); C23C 8/22 (2006.01); C23C 8/30 (2006.01); C23C 8/32 (2006.01)

CPC (source: EP)

C23C 8/20 (2013.01); C23C 8/30 (2013.01)

Citation (search report)

See references of WO 9955921A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

FR 2777910 A1 19991029; FR 2777910 B1 20000825; AU 2939499 A 19991116; BR 9910018 A 20010109; CA 2324943 A1 19991104; CN 1298456 A 20010606; EP 1076726 A1 20010221; JP 2002513083 A 20020508; WO 9955921 A1 19991104

DOCDB simple family (application)

FR 9805231 A 19980427; AU 2939499 A 19990326; BR 9910018 A 19990326; CA 2324943 A 19990326; CN 99805547 A 19990326; EP 99910437 A 19990326; FR 9900707 W 19990326; JP 2000546063 A 19990326