Repair method for roller and repair equipment for roller

Abstract

The invention relates to a repair method for a roller. The roller comprises a roller neck, a roller body and a shaft head which are sequentially and fixedly connected. For a roller with casting defects in the roller neck portion, after the defect portion is cut, the roller is fixed to a fixing base. A shell is fixedly connected to the fixing base, and the rest of the roller neck extends into an inner cavity of the shell. Then a mold part is formed on the inner wall of the inner cavity of the shell. After arrangement, molten iron is poured into a molding cavity firstly, and molten iron poured in firstly is used for conducting flush-melting treatment on the rest of the roller neck. Molten iron for conducting flush-melting treatment on the rest of the roller neck is discharged from a discharging channel. Then the discharging channel is plugged up; besides, molten iron is poured into the molding cavity again; and at the moment, the discharging channel has been plugged up, molten iron poured in for the second time is stacked in the molding cavity, and after molten iron is cooled and solidifies, a repaired portion fixedly connected with the rest of the roller neck can be formed. By meansof the repair method for the roller, repair of rollers with defects can be achieved; and the manufacturing cost is effectively lowered. The invention further relates to repair equipment for the roller.

Description

technical field [0001] The invention relates to the technical field of melting and casting repair of large castings, in particular to a roll repair method and roll repair equipment. Background technique [0002] The roll is the main working part that causes continuous plastic deformation of the metal on the rolling mill. The roll is mainly composed of three parts: the roll body, the roll neck and the shaft head. Among them, the roll body is the middle part of the roll that actually participates in rolling metal; the roll neck is installed in the bearing, and the rolling force is transmitted to the frame through the bearing seat and the pressing device; the shaft head is connected to the gear seat through the connecting shaft , so as to transmit the rotational torque of the motor to the roll, so that the roll rotates and rolls metal. In the traditional roll casting process, roll neck eccentricity often occurs, resulting in insufficient machining allowance, which leads to cas...

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to solve the problem of scrapping existing rolls with roll neck defects and high production costs, and provide a roll repair method that can repair rolls with roll neck defects to reduce production costs and a roll repair method for rolls. repair equipment

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