Salt bath for chilling fused-salt nitrided structural...

Details Salt bath for chilling fused-salt nitrided structural... Salt bath for chilling fused-salt nitrided structural...

C - Chemistry, Metallurgy

21

D

148/64

C21D 1/56 (2006.01) C21D 1/607 (2006.01)

Patent

CA 1070225

ABSTRACT OF THE DISCLOSURE The present invention provides in the method of chilling iron and steel structural components which components have been treated with a nitriding salt bath poor in cyanide and rich in cyanate or in a cyanide containing salt bath said method comprising passing the components into a salt bath to effect said chilling the improvement in which said salt bath for effecting said chilling consists essentially of a mixture of hydroxides of alkali metals and from 0 to 20% of an alkali metal nitrate, The invention also includes a chilly salt-bath which contains sodium and potassium hydroxide.

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