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2 281 846

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(51)

IPC

B23P6/02(2006-01-01)

B23K9/04(2006-01-01)

B21B28/02(2006-01-01)

(21) (22)

Application

2004138416/02, 2004-12-27

(24)

Start date

2004-12-27

(22)

Actual filing date

2004-12-27

(45)

Published

2006-08-20

(72)

Inventor

Gejer Vladimir Vasil'EvichOvchinnikov Vladimir SergeevichVjatkin Roman ViktorovichKolobov Vladimir KonstantinovichTjapaev Oleg VjacheslavovichTrajno Aleksandr Ivanovich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

METHOD FOR RESTORING CAST IRON ROLLING ROLLS WITH DAMAGED JOURNALS Russian patent published in 2006 - IPC B23P6/02 B23K9/04 B21B28/02

Abstract RU 2281846 C1

FIELD: metallurgy, namely processes for restoring cast iron working rolls with journals damaged at operation.

SUBSTANCE: method comprises steps of mechanically removing damaged layer; multi-layer electric arc surfacing of rotated roll in place of removed layer while feeding steel wire electrode to welding zone for further cooling surfaced journal; surfacing three or four layers with use of wire electrode of austenite steel at peripheral velocity of roll 25 - 30m/h, electric current density 40 - 60 A/mm²and electric arc voltage 30 -40 V; sustaining temperature of journal in first (three or four) layers no more than 300°C and in next layers no more than 450°C.

EFFECT: possibility for complete restoration of geometry size and working properties of damaged shafts at keeping their strength and hardness.

1 tbl, 1 ex

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RU 2 281 846 C1

Authors

Gejer Vladimir Vasil'Evich

Ovchinnikov Vladimir Sergeevich

Vjatkin Roman Viktorovich

Kolobov Vladimir Konstantinovich

Tjapaev Oleg Vjacheslavovich

Trajno Aleksandr Ivanovich

Dates

2006-08-20—Published

2004-12-27—Filed