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2 228 958

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IPC

(21) (22)

Application

2002115521/02, 2002-06-10

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Start date

2002-06-10

(22)

Actual filing date

2002-06-10

(45)

Published

2004-05-20

(72)

Inventor

Lutsenko A.N.Monid V.A.Rovkin A.M.Khorev G.A.Trajno A.I.Tjapaev O.V.Nikiforov V.V.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

METHOD OF HARDENING OF STEEL ROLL OF SECTION ROLLING MILL Russian patent published in 2004 - IPC

Abstract RU 2228958 C2

FIELD: metallurgy; rolling process; hardening working gauges of steel rolls of section rolling mils. SUBSTANCE: proposed method includes mechanical turning of roll followed by heating it to temperature of 300-370 C at rate of 50-100 C/h. Subsequent hard-facing is performed at rate of 30-40 m/h and density of electric current of 40-45 A/sq mm. Then, heat treatment is performed to temperature of 450-500 C continued for 1.5-2 h. EFFECT: enhanced resistance of rolls. 2 cl, 1 tbl, 6 ex

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RU 2 228 958 C2

Authors

Lutsenko A.N.

Monid V.A.

Rovkin A.M.

Khorev G.A.

Trajno A.I.

Tjapaev O.V.

Nikiforov V.V.

Dates

2004-05-20—Published

2002-06-10—Filed