EP 0147011 A2 19850703 - A non-cyanide salt bath and process for carburization of ferrous metals and alloys.
Title (en)
A non-cyanide salt bath and process for carburization of ferrous metals and alloys.
Title (de)
Cyanidfreies Salzbad und Verfahren zur Aufkohlung von eisenhaltigen Metallen und Legierungen.
Title (fr)
Bain de sel sans cyanure et procédé de carburation de métaux et alliages ferreux.
Publication
Application
Priority
US 56628883 A 19831228
Abstract (en)
A non-cyanide molten salt bath composition for the carburization of objects made of ferrous metals or alloys at a temperature in the range of 900-1050 DEG C comprises: (a) 85-99% of an alkali metal chloride or a mixture of alkali metal chlorides; (b) 0.25-8% of an activator, which is an oxygen containing compound barium and/or strontium compound and (c) sufficient amount of finely divided graphite to provide a continuous cover on the surface of the molten salt mixture. The ferrous metal or alloy part is immersed in the molten mixture at a temperature in the range of 900 DEG C to 1050 DEG C.
IPC 1-7
IPC 8 full level
C23C 8/46 (2006.01)
CPC (source: EP)
C23C 8/46 (2013.01)
Designated contracting state (EPC)
BE DE FR GB IT LU NL SE
DOCDB simple family (publication)
EP 0147011 A2 19850703; EP 0147011 A3 19860326; CA 1244748 A 19881115; ES 539095 A0 19860401; ES 8606522 A1 19860401
DOCDB simple family (application)
EP 84306336 A 19840917; CA 463590 A 19840919; ES 539095 A 19841227