Method of deformation-free quenching of work-pieces heated to ha

Details Method of deformation-free quenching of work-pieces heated to ha Method of deformation-free quenching of work-pieces heated to ha

1974-07-18

1976-08-31

Dean, R.

Metal treatment

Compositions

Heat treating

148 36, 148 38, 148143, 148153, C21D 118

Patent

active

039779149

ABSTRACT:
The invention relates to a method of deformation-free quenching of work pieces having a free flange, e.g. boiler bottoms, heated up to hardening temperature, and to a device for carrying out the method. Upon removal from the hardening furnace the work-piece, which has been provided with a plane front surface is placed on a plane supporting construction, then the work-piece and the supporting construction are heated up to hardening temperature and subsequently the supporting construction together with the work-piece resting on it is dipped into a basin filled with quenching liquid. The supporting construction is an annular structure made of austenitic, non-scaling material, wherein in the material no microstructure alteration occurs in the range between the temperature of the quenching liquid and the hardening temperature.

REFERENCES:
patent: 2726181 (1955-12-01), Lyon
patent: 2765161 (1956-10-01), Mungall

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