EP 0049531 B1 19850605 - METHOD OF CASE-HARDENING METALLIC PIECES
Title (en)
METHOD OF CASE-HARDENING METALLIC PIECES
Publication
Application
Priority
DE 3038082 A 19801008
Abstract (en)
[origin: EP0049531A1] 1. A method of case-hardening metallic workpieces, in which the latter are subjected to the action of a carbon-containing gas atmosphere at high temperatures in a furnace, in which gas atmosphere pressure fluctuations are produced, characterised in that the gas atmosphere is formed from at least two components and the pressure fluctuations are produced by the pulsating charging into the furnace of at least two components having different amplitudes and frequencies of pressure fluctuations for the individual gas components.
IPC 1-7
IPC 8 full level
C23C 8/06 (2006.01); C23C 8/20 (2006.01); C23C 8/22 (2006.01)
CPC (source: EP)
Designated contracting state (EPC)
BE CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0049531 A1 19820414; EP 0049531 B1 19850605; AT A539780 A 19820415; AU 542462 B2 19850221; AU 6915581 A 19820422; BR 8102151 A 19820817; DE 3038082 A1 19820506; DE 3170867 D1 19850711; DK 433081 A 19820409; ES 505892 A0 19820901; ES 8206641 A1 19820901; NO 813284 L 19820413; ZA 812499 B 19820428
DOCDB simple family (application)
EP 81108035 A 19811007; AT 539780 A 19801103; AU 6915581 A 19810407; BR 8102151 A 19810409; DE 3038082 A 19801008; DE 3170867 T 19811007; DK 433081 A 19810930; ES 505892 A 19810930; NO 813284 A 19810928; ZA 812499 A 19810415