METHOD OF HEAT TREATMENT OF ARTICLES Russian patent published in 1994 - IPC

Abstract SU 1812798 A1

FIELD: machine building. SUBSTANCE: thermocyclic treatment is carried out at 900 C within 30 min, it is followed by cooling in non-operated muffle to 800 C, sustaining within 30 min and heating to 1000 C. Then sustaining within 30 min and additional cooling in non-operated muffle to 930 C followed by hardening in water is carried out. EFFECT: increases cooling rate. 3 tbl

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SU 1 812 798 A1

Authors

Karpov L.P.

Stolbova N.M.

Korotaev V.S.

Dates

1994-05-15—Published

1990-07-17—Filed