Roller surfacing technology

Abstract

The invention relates to a roller surfacing technology. The roller surfacing technology comprises the steps of firstly, checking before welding; secondly, preheating before welding; thirdly, performing surfacing machining; and fourthly, performing post-weld heat treatment. The roller surfacing technology has the advantages that a worn part of a roller can be repaired, meanwhile, the hardness and the wear resistance of the roller can be greatly improved, and therefore the service life of the roller can be prolonged, and the roller surfacing efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of welding processing, in particular to a roller surfacing welding process. Background technique [0002] The surfacing roll refers to the manufacture or repair of the roll with various surfacing methods on the roll core with better toughness. It is one of the production methods of composite rolls. At the same time, it can be surfacing many times to make it reused. It is a powerful measure to prolong the life of the rolls, improve the operating rate of the rolling mill and the quality of the rolled products. Although the existing roll surfacing process realizes the repair of the size of the worn part of the roll, due to the unreasonable arrangement of steps, the performance of the roll after surfacing cannot be further improved, and the hardness and wear resistance cannot be effectively improved. The process steps are relatively cumbersome, and the roll surfacing takes a long period. Therefore, a new roll s...

AI Technical Summary

Problems solved by technology

Although the existing roll surfacing process realizes the repair of the size of the worn part of the roll, due to the unreasonable arrangement of steps, the performance of the roll after surfacing cannot be further improved, and the hardness and wear resistance cannot be effectively improved. The process steps are relatively cumbersome, and the roll surfacing takes a long time. Therefore, a new roll surfacing process is urgently needed to realize the repair and recycling of the roll.