Electroplastic and ultrasonic rolling pressing coupling roller on-line repairing system and method

Abstract

The invention provides an electroplastic and ultrasonic rolling pressing coupling roller on-line repairing system and method. The system comprises a pair of support frames, a lead screw, a guide rail, a slide block, an air cylinder, a left electric brush device, a right electric brush device and a pulse power supply, wherein the support frames are arranged on a machine body of a rolling machine in front of a roller; the lead screw, the guide rail and the slide block are driven by an electric motor; the lead screw and the guide rail are arranged between the pair of support frames; the slide block is driven by the lead screw and can flatly move along the guide rail; the air cylinder, the left electric brush device and the right electric brush device are arranged on the slide block in an insulated way, the air cylinder is provided with an ultrasonic rolling pressing device; a rolling pressing head of the ultrasonic rolling pressing device can be in tight contact with the roller surface of the roller; a left electric brush of the left electric brush device and a right electric brush of the right electric brush device are in sliding contact with the roller surface of the roller; the output end of the pulse power supply is respectively connected with the left electric brush and the right electric brush. The system and the rolling machine are combined, the on-line restoration of the roller can be realized, and the electroplastic effect, the ultrasonic impact and the rolling pressing simultaneously act on the roller surface of the roller, so that the roller surface crystal particles are refined, a pressure stress reinforcing layer is formed, and the on-line restoration of the roller is fast realized.

Description

technical field [0001] The invention relates to roll repair technology, in particular to a system for online roll repair by coupling electroplasticity and ultrasonic rolling, and an online roll repair method based on the system. Background technique [0002] The rolls of the rolling mill are subjected to various effects such as dynamic and static loads, thermal shocks, and wear during the rolling production process, and the working environment is complex and harsh. The roll surface as the working area of ​​the roll is directly in contact with the rolling material. The complex wear, stress and thermal shock and other alternating loads make the roll surface prone to cracks, spalling and other damage, which affects the rolling quality and roll life, and even causes severe damage. The fracture failure of the whole roll will cause serious production accidents and economic losses. Therefore, the actual production process needs to monitor the state of the roll surface in real time...

AI Technical Summary

Problems solved by technology

In addition, the roll is the core component of the rolling mill, and the disassembly process is complicated and time-consuming

Roll repair takes up production time, requires a lot of manpower and capital investment and pushes up production costs, especially for large rolling mills, the cost of roll repair accounts for a large proportion of the total cost

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