METHOD FOR PRODUCING OF BARS FROM POWDER HIGH-SPEED STEEL Russian patent published in 1994 - IPC

Abstract RU 2015852 C1

FIELD: production of bars from powder high-speed steel. SUBSTANCE: method includes filling of powder in mold, its sealing, extrusion, shifting of obtained intermediate product to stand and deformation to preset sizes by hot rolling in two stages. One stage includes heating of intermediate product to 850-1100 C and radial-shear deformation in screw stand with at least three passes and percent deformation of not less than 30%. The second stage covers rolling in longitudinal stand with percent deformation of at least 40% and heating temperature of 750-950 deg. EFFECT: higher efficiency. 1 tbl

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RU 2 015 852 C1

Authors

Tolkacheva E.P.

Krasnov A.V.

Luzin Ju.F.

Malov E.V.

Dates

1994-07-15—Published

1991-06-27—Filed