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2 243 076

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IPC

(21) (22)

Application

2003113474/02, 2003-05-07

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Start date

2003-05-07

(22)

Actual filing date

2003-05-07

(45)

Published

2004-12-27

(72)

Inventor

Smirnov V.S.Lamukhin A.M.Sinev O.V.Sobolev V.F.Rosljakova N.E.Trajno A.I.Tjapaev O.V.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

ROLLER RESTORING METHOD Russian patent published in 2004 - IPC

Abstract RU 2243076 C1

FIELD: repairing of metallurgical equipment, rollers of roller table of hot rolling mill.

SUBSTANCE: method comprises steps of preliminary heating up until temperature 200 -300 C; performing multi-layer surfacing by means of steel electrode at rate 10 - 40 m/h and at density of electric current 20 -25 A/sq.mm; using steel electrode with next chemical content, mass. %: carbon, 0.15 - 0.23; manganese, 1.2 - 1.8; silicon, 0.5 -0.9; chrome, 2.0 -3.2; vanadium, 0.08 -0.20; molybdenum, 0.3 - 0.5; iron, the balance. Normalized parameters for repairing rollers provide their high rigidity, thermal strength and wear resistance.

EFFECT: improved quality of repaired rollers.

2 cl, 2 tbl, 6 ex

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RU 2 243 076 C1

Authors

Smirnov V.S.

Lamukhin A.M.

Sinev O.V.

Sobolev V.F.

Rosljakova N.E.

Trajno A.I.

Tjapaev O.V.

Dates

2004-12-27—Published

2003-05-07—Filed