Bionic non-smooth wearable roller(II)

Abstract

The present invention belongs to the field of roller for rolling shaped section and aims at raising the wear resistance of roller surface. One kind of bionic un-smoothed roller with effectively prolonged service life is provided. The roller consists of roller coating of wear resisting material and roller core of tough material, and features the un-smoothed scaly surface in micron level. The scales on the surface of the roller have long axis of 50-200 micron, short axis of 25-100 micron, height of 25-100 micron, and distribution density of 200-1000 each 100 sq mm.

Description

[0001] This application is a divisional application with the application number 02133029.8, the filing date being September 25, 2002, and the name being "bionic non-smooth wear-resistant roll". technical field [0002] The invention belongs to rolls for rolling profiles. Background technique [0003] The rolls used in the rolling mill, in the process of rolling various wire rods, bars, narrow strip steel, medium strip steel, and seamless steel pipes, work under the conditions of high temperature, high load and high speed, and the working conditions are harsh , the roll is required to have high strength, toughness, wear resistance, surface roughness resistance and thermal crack resistance. Therefore, the requirements for the material and process of manufacturing the roll are high. [0004] At present, most of the rolls used in rolling mills still use high-alloy infinite chilled rolls and alloy semi-steel rolls, and most of these rolls are produced from the same material. For...

AI Technical Summary

Problems solved by technology

For the same material, wear resistance and toughness are often two contradictory indicators, and the roll requires high wear resistance on the surface and good toughness on the core, but they are mutually restrictive in production

If the wear resistance of the roll is high, the toughness is obviously insufficient, and roll breakage often occurs during production; if the toughness is good, the wear resistance is poor

Therefore, the rolls manufactured by the existing materials and processes have low production efficiency and high cost. Taking a steel company as an example, the profile rolls need to be replaced three times per shift of eight hours, and the high-speed wire rolls need to be replaced every day for two hours.

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