PROCESS FOR RESTORING ROLLING ROLLS Russian patent published in 2004 - IPC

Abstract RU 2237563 C1

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

SUBSTANCE: process comprises steps of mechanically taking off damaged layer and performing electric arc surfacing in place of taking off material at feeding electrode to welding zone; further cooling surfaced journal. Surfacing is realized at rate 40 - 50 m/h at density of electric current 35 -45 A/sq. mm. Temperature of journal is kept during surfacing no more than 400 C. Then journal is cooled until temperature of environment at mean rate 5 - 20 C/s.

EFFECT: possibility for providing high strength of cast iron rolls due to increased hardness and strength of surfaced layer.

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RU 2 237 563 C1

Authors

Bodjaev Ju.A.

Borovkov I.V.

Kozlov A.P.

Santalov A.G.

Trajno A.I.

Tjapaev O.V.

Dates

2004-10-10—Published

2003-01-20—Filed