METHOD OF VACUUM THERMAL TREATMENT OF SMALL-SIZE QUICK-CUTTING STEEL TOOLS Russian patent published in 1997 - IPC

Abstract RU 2093588 C1

FIELD: metal working. SUBSTANCE: method consists in vacuum heating to 1070-1180 C with specified rate, aging for 10-15 min, cooling with rate 0.9-1.1 C/s to 600-700 C, and drawing without depressurization of furnace at 180-580 C in vacuum up to I0^-5 mm Hg. EFFECT: optimized conditions of procedure. 9 cl, 1 tbl

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RU 2 093 588 C1

Authors

Tarasov A.N.

Avdanin Ju.D.

Panfilov V.A.

Dates

1997-10-20—Published

1993-07-13—Filed