Metal treatment – Compositions – Heat treating
Patent
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
Drexler Berndt
Klicnik Franz
Mildner Heinz
Oberhauser Franz
Rudelstorfer Heinrich
Dean R.
Kelman Kurt
Vereinigte Osterreichische Eisen- und Stahlwerke--Alpine Montan
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