Method for the Pre-treatment of steel parts prior to salt bath n

Details Method for the Pre-treatment of steel parts prior to salt bath n Method for the Pre-treatment of steel parts prior to salt bath n

1995-11-28

1998-04-07

Silverberg, Sam

Metal treatment

Process of modifying or maintaining internal physical...

Carburizing or nitriding using externally supplied carbon or...

148218, 148242, C23C 802, C23C 840

Patent

active

057359717

ABSTRACT:
Flawless nitrating layers are obtained during the nitro-carburizing of components made from steels which form passive layers in salt baths if these components are first pre-treated in an oxidizing salt melt at 300.degree. to 500.degree. C. prior to the nitro-carburizing process.

REFERENCES:
patent: 3915759 (1975-10-01), Smollett
patent: 5022934 (1991-06-01), Schwing
patent: 5102476 (1992-04-01), Wahl

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