Method of deep hardening of workpieces

Details Method of deep hardening of workpieces Method of deep hardening of workpieces

1983-07-15

1985-07-30

Dean, R.

Metal treatment

Compositions

Heat treating

148 167, 148 203, 148134, 148143, C21D 174

Patent

active

045319839

ABSTRACT:
A method for deep hardening steel workpieces which are subject to high surface pressures by first heating the workpiece and then quenching the thus heated workpiece to cool to a range just above the martensite stage, the temperature is held in this range by using a controlled cooling agent until the structure is essentially completely transformed to a fine particulate sorbite. Thereafter, the workpiece is cooled. As a result of this process, a uniform hardening pattern in the workpiece can be consistently obtained. An apparatus for carrying out the method of the invention is also disclosed.

REFERENCES:
patent: 3997376 (1976-12-01), Hemsath et al.

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