A new bionic composite roll manufacturing method with high wear resistance and long service life suitable for repair

Abstract

The present invention provides a new bionic composite roll manufacturing method with high wear resistance and long service life suitable for repair, which is obtained by designing the composite gradient of the roll material from the inside to the outside, and is characterized in that the high wear resistance, long life and high performance composite roll From the inside to the outside, it includes a roll core, a transition layer and a working layer. The roll core is made of conventional nodular iron, carbon steel or low alloy steel, and the working layer is made of tungsten-cobalt cemented carbide, tungsten-titanium Cobalt-based cemented carbide or high-chromium iron and other materials with high hardness and high wear resistance, the physical properties of the transition layer material are between the core material and the working layer material. The invention enhances the wear resistance of the roll and improves its service life. Moreover, the utilization rate of materials is greatly improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to the manufacturing field of rolls, in particular to a novel composite roll manufacturing method established on the basis of bionics, high in wear resistance, long in service life and suitable for repair. Background technique [0002] The roll is an important tool to make the rolled metal material produce plastic deformation. It uses the pressure generated by a pair or a group of rolls to roll and roll various metal materials to produce plastic deformation. During the rolling process, it has to bear the influence of dynamic and static loads, wear and temperature changes during rolling, so the roll will be continuously worn during use. The conventional repair method is to correct the roll shape by turning or grinding. And once the size of the roll is worn to the irreparable stage, the entire roll will be scrapped, resulting in a huge waste of materials. Therefore, the material of the roll plays a decisive role in the wear resista...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the shortcomings of the background technology above, the present invention provides 1. A bionic high-wear-resistance and long-life novel composite roll manufacturing method suitable for repair, which solves the problems of conventional rolls such as alloy segregation in the working layer, large thickness difference between upper and lower layers, and coarse grain structure. And problems such as pores, cracks and poor interface bonding generated during the centrifugal casting process

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