Method for repairing damage of non-work surface of roller

Abstract

The invention relates to the technical field of repair of non-work surfaces of rollers and particularly relates to a process for repairing the damage of a roller. The process comprises the following steps: firstly, preheating and preserving the heat: after removing a fatigue layer or the defects of the surface of the damaged part of the non-work surface of the roller, locally heating the damaged part and carrying out heat preservation on the heated part during heating; secondly, welding: after stop preheating, welding the damaged part of the non-work surface of the roller at an interval of 5 mm to 10 mm and quickly knocking the damaged part to enable the damaged part to be continuously welded after being recovered to be original shape; thirdly, tempering and preserving the heat: after welding, locally heating the damaged part; and fourthly, trimming. According to the method disclosed by the invention, the damaged part of the non-work surface of a high-crisp and high-hardness alloy roller is repaired by adopting a conventional welding material, welding equipment, thermal treatment equipment and simple thermal treatment process, so that the dependence on the equipment caused by a non-work surface damage process of the roller is reduced and the repair cost is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of roll repair, and relates to a method for repairing damage to a non-working surface of a roll. Background technique [0002] The steel and non-ferrous metal rolling industry uses rolling mills for rolling production. In rolling production, the rolls are in direct or indirect contact with the rolled metal to cause plastic deformation of the metal, which is the main deformation tool of the rolling mill. During the assembly, transportation and use of the roll, it is easy to cause wear, strain, burn, impact deformation, cracking and other damage to the non-working surface due to the inner circle of the bearing, the impact of the end face, cutting or assembling parts. If the damaged part is not repaired in time , Eliminate roll defects. Under the action of high speed, large rolling force and large roll bending force, the internal stress of the roll will increase, resulting in equipment and product losses such a...

AI Technical Summary

Problems solved by technology

[0010] The invention provides a method for repairing the damage of the non-working surface of the roll, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the requirements of the currently commonly used repairing technology for the non-working surface of the roll on welding consumables, welding equipment, heat treatment equipment, and heat treatment processes Higher, technically difficult and expensive to fix issues

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