Method for steel surface hardening treatment and an apparatus th

Details Method for steel surface hardening treatment and an apparatus th Method for steel surface hardening treatment and an apparatus th

1992-10-02

1993-12-07

Yee, Deborah

Metal treatment

Process of modifying or maintaining internal physical...

Carburizing or nitriding using externally supplied carbon or...

266252, 266254, 148226, C21D 118

Patent

active

052680401

ABSTRACT:
A method of cooling steel parts from austenitic stage to a temperature that is higher than its Ms point after carburization of said steel part to carry out diffusion transformation, then carrying out a nitriding treatment and further applying shot peening, and in order to implement said method provide a carburizing zone, a cooling zone for carrying out diffusion transformation and a nitriding treatment zone connected through opening and shutting doors, and provide feeding devices in each of said zones to feed the steel parts to the next zone.

REFERENCES:
patent: 5019182 (1991-05-01), Arimi et al.

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