Metal pipe inner wall strengthening device and application thereof

Abstract

The invention provides a metal pipe inner wall strengthening device and application thereof. The strengthening method of the device mainly comprises a stepping type machining mode, a continuous linear type machining mode and a continuous spiral type machining mode, and short-time and efficient structure regulation and strengthening and toughening can be achieved on the inner wall of the metal pipe. The microstructure of the inner wall of the machined metal pipe is obviously refined, a large amount of dislocation is reserved, a strengthened area and a base body deform in a coordinated mode, and the strength and plasticity are improved at the same time. The device can be used for cladding a wear-resistant coating with larger thickness on the inner wall of the metal pipe, so that the wear resistance of the pipe is improved. The device effectively solves the technical bottleneck that the overall heat treatment of the large-size, irregular-shaped and thick-wall metal pipe is difficult to realize in the traditional heat treatment, and solves the technical problems that the laser surface treatment, shot blasting treatment and other methods can only treat the outer surface of the pipe, the action depth is shallow, and the large-size, thick-wall or irregular-shaped pipe is difficult to reinforce; the device can extend into an electrode structure in the pipe, so that the pipe is prevented from being disassembled and welded, and the machining efficiency is improved.

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