METHOD FOR RESTORING ROLLING ROLLS Russian patent published in 2005 - IPC

Abstract RU 2245771 C2

FIELD: restoration of cast iron rolling rolls with journals damaged at operation.

SUBSTANCE: method comprises steps of mechanically removing damaged layer and performing electric arc surfacing of rotated roll in place of damaged layer removal while feeding steel austenite wire electrode with diameter 3 - 5 mm to welding zone. Surfacing is realized at density of electric current 30 - 40 A/sq. mm and at electrode feeding speed 80 - 110 m/h. After surfacing journal is subjected to spontaneous cooling.

EFFECT: possibility for completely restoring geometry size of operational properties of damaged roll at keeping the same values of its hardness and strength.

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RU 2 245 771 C2

Authors

Skorokhvatov N.B.

Smirnov V.S.

Petukhov I.P.

Trajno A.I.

Tjapaev O.V.

Dates

2005-02-10—Published

2003-03-03—Filed