Repair method for surface quality of working roller

Abstract

The invention discloses a repair method for the surface quality of a working roller. The repair method for the surface quality of the working roller is characterized in that roller chamfer points on the working roller and a support roller are arranged near the same vertical line through a first roller chamfer and a second roller chamfer with different lengths, so that the roller chamfer on the support roller is prevented from cracking the surface of the edge part of the working roller, through the first roller chamfer and the second roller chamfer with the inclination smaller than 20 degrees, the technical problem that the stress on the two sides of the working roller is too large in the rolling process is solved, the surface defects of the two sides of the working roller are improved, the workload of subsequent repairing work is reduced, the repairing efficiency is improved, and the service life of the working roller is prolonged.

Description

technical field [0001] The invention relates to a repair method, in particular to a repair method for the surface quality of work rolls. Background technique [0002] The roll is the part on the rolling mill that causes the plastic deformation of the rolled metal. According to whether it contacts the rolled piece, it can be divided into a work roll and a back-up roll. The roll that directly contacts the rolled piece is called a work roll. When the work roll is processed by rolling Finally, there will be different degrees of quality defects on the surface of both sides of the work roll, such as: wide and narrow marks, bright lines, streaks, roll damage, sticking aluminum, broken tape marks, etc. For such surface defects, the repair method commonly used at present is Grinding reduction method, however, this method is likely to cause the bursting of the work roll when repairing the crack defect on the surface of the work roll, and if the method of grinding reduction is always u...

AI Technical Summary

Problems solved by technology

[0002] The roll is the part on the rolling mill that causes the plastic deformation of the rolled metal. According to whether it contacts the rolled piece, it can be divided into a work roll and a back-up roll. The roll that directly contacts the rolled piece is called a work roll. When the work roll is processed by rolling Finally, there will be different degrees of quality defects on the surface of both sides of the work roll, such as: wide and narrow marks, bright lines, streaks, roll damage, sticking aluminum, broken tape marks, etc. For such surface defects, the repair method commonly used at present is Grinding reduction method, however, this method is likely to cause the bursting of the work roll when repairing the crack defect on the surface of the work roll, and if the method of grinding reduction is always used to deal with the crack defect, the roll diameter of the work roll will become smaller , seriously affecting the service life of the work roll