METHOD FOR REPAIRING ROLLING ROLLS Russian patent published in 2002 - IPC

FIELD: processes for restoration by welding, possibly repairing rolls of mills for hot and cold rolling. SUBSTANCE: method comprises steps of preliminary heating up and surfacing worn portion of roll for further working of it; surfacing cylindrical or flat portion of wobbler; carrying out preliminary heating up at rate no more than 70 C/h until temperature 150-500 C; at surfacing using alloy providing Shore hardness of surfaced layer equal to 0.5-2.5 of hardness value of roll necking portion; before surfacing preliminarily heating in addition roll barrel until 100-400 C; after surfacing cooling wobbler at rate no more than 50 C/h. EFFECT: increased useful life period of rolling rolls, elimination of jamming of worn wobbler in coupling, lowered consumption of roll material. 3 cl, 1 dwg, 1 ex