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Grooved-roller laser surface treatment method

A laser surface treatment and roll surface technology, applied in heat treatment furnaces, heat treatment equipment, furnace types, etc., can solve problems such as affecting production efficiency, increasing production costs, and expensive manufacturing costs, and achieving improved service life, uniform wear, and reduced pre-conditioning. The effect of the degree of treatment

Inactive Publication Date: 2014-02-26
湖州市银鑫轧辊有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production of rolls requires multiple processing procedures such as steelmaking, forging, and normalizing, which has a long production cycle and high manufacturing costs
Roll change also affects production efficiency and indirectly increases production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] In the laser surface treatment method of the grooved roll of the present invention, the components of the grooved roll are calculated by weight percentage: C: 0.85%-1.10%; Si: 0.6%-1.0%; Mn: 0.20%-0.8%; Cr: 5.5%-7.5%; Mo:0.30%-0.8%; V:0.1%-0.3%; Ni≤0.4%; P≤0.020%; S≤0.015%; the rest is Fe and unavoidable impurities; the pass type roll The steps of the laser surface treatment method are as follows: 1) Measure the degree of wear of each part of the surface of the grooved roll after use compared with when it is not used; 2) Conduct a flaw detection inspection on the grooved roll; Carry out surface pretreatment; 4) Carry out laser surface treatment, the surface hardness of each part of the laser surface treatment pass roll surface increases with the increase of its wear degree.

[0014] The above step 4) the hardening depth of each part on the surface of the middle pass roll increases with the increase of the wear degree, the hardening depth of each part on the surface of t...

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PUM

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Abstract

The invention relates to a grooved-roller laser surface treatment method. The grooved-roller laser surface treatment method comprises the following steps of 1, determining wear degrees of used grooved roller surface parts compared with the parts before use, 2, carrying out flaw detection on the grooved roller, 3, carrying out surface pre-treatment on the qualified grooved roller, and 4, carrying out laser surface treatment, wherein surface hardness of the parts of the grooved roller subjected to laser surface treatment is increased with wear degree increase. The parts of the grooved roller are subjected to laser strengthening treatment according to wear degrees of the parts of the grooved roller in practical work so that wear of the grooved roller surface is uniform in follow-up use and a pre-treatment degree is reduced in follow-up restoration and thus a restoration rate is fast and a grooved roller service life is prolonged effectively.

Description

technical field [0001] The invention relates to a laser surface treatment method for grooved rolls. Background technique [0002] During the rolling process, the roll body of the roll is subjected to huge high-speed alternating rolling pressure, and the pass wear is serious, especially in direct contact with red steel, which causes alternating cold and heat under the action of the cooling liquid, which aggravates the wear of the roll. No matter what kind of profile roll, the wear degree of the contact part in the pass is serious. Therefore, the roll requires certain red hardness, wear resistance, corrosion resistance and fatigue resistance. The production of rolls requires multiple processing procedures such as steelmaking, forging, and normalizing. The production cycle is long and the manufacturing cost is expensive. Roll changing also affects production efficiency and indirectly increases production costs. The surface laser strengthening of the roll can increase its har...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/09C21D9/38
Inventor 黄金荣范银芳
Owner 湖州市银鑫轧辊有限公司