EP 0647726 B1 19991208 - Method for treatment of pieces
Title (en)
Method for treatment of pieces
Title (de)
Verfahren zum Behandeln von Teilen
Title (fr)
Procédé pour le traitement de pièces
Publication
Application
Priority
DE 4333940 A 19931006
Abstract (en)
[origin: EP0647726A1] In a process for treating parts, esp. steel and/or cast iron parts, the parts are subjected to combined oxidn. (blueing) and hardening by introduction or injection of a reducing and oxidising reaction gas at the hardening temp. into the treatment furnace. Pref. the reaction gas is produced using a methanol-water mixt.
IPC 1-7
IPC 8 full level
C21D 1/76 (2006.01); C23C 8/10 (2006.01); C23C 8/16 (2006.01); C23C 8/18 (2006.01)
CPC (source: EP)
Citation (examination)
- US 2673821 A 19540330 - STUTZMAN MILO J
- R. ERNST: "Wörterbuch der industriellen Technik, Band II Englisch-Deutsch" , S. 111, OSCAR BRANDSTETTER VERLAG, WIESBADEN (DE)
Designated contracting state (EPC)
AT BE DE FR GB IT
DOCDB simple family (publication)
EP 0647726 A1 19950412; EP 0647726 B1 19991208; AT E187504 T1 19991215; DE 4333940 C1 19941208; DE 59408983 D1 20000113
DOCDB simple family (application)
EP 94202679 A 19940916; AT 94202679 T 19940916; DE 4333940 A 19931006; DE 59408983 T 19940916