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Cold-rolled roller with high roughness keeping performance

A cold roll and roughness technology, applied in the field of cold rolls, can solve the problems of high rolling deformation resistance of high-strength steel, reduce the production efficiency of the unit, affect the output and other problems, and achieve excellent wear resistance, high roughness retention ability, and extended online. The effect of using time

Inactive Publication Date: 2018-02-13
YIXING YONGCHANG ROLL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-strength steel has high resistance to rolling deformation, and the corresponding wear on the rolls is also serious. If the rolls are replaced frequently, the production efficiency of the unit will be greatly reduced and the output will be affected.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A cold rolling roll with high roughness retention performance, the cold rolling roll includes the following chemical components by weight percentage: C is 1.05%; Si is 0.50%; Mn is 0.36%; Cr is 4.2%; Ni is 0.26% %; Mo is 0.72%; V is 1.85%, W is 1.2%; S≤0.20%; P≤0.20%; the rest is Fe and unavoidable impurities. The raw materials of the above-mentioned cold rolls with high roughness retention performance are smelted in electric furnace→outside furnace refining→vacuum degassing→casting electrode→electroslag remelting→forging→spheroidizing annealing→rough machining→quenching and tempering heat treatment→semi-finishing→ Heat treatment of the roll body→finishing→finished roll. The finished roll is tested: the surface hardness of the roll body is 62HRC, the hardness of the roll neck is 32HRC, and the hardness uniformity is ≤2HSD.

Embodiment 2

[0016] A cold rolling roll with high roughness retention performance, the cold rolling roll includes the following chemical components by weight percentage: C is 1.36%; Si is 0.40%; Mn is 0.28%; Cr is 3.8%; Ni is 0.22% %; Mo is 0.62%; V is 2.1%, W is 1.32%; S≤0.20%; P≤0.20%; the rest is Fe and unavoidable impurities. The raw materials of the above-mentioned cold rolls with high roughness retention performance are smelted in electric furnace→outside furnace refining→vacuum degassing→casting electrode→electroslag remelting→forging→spheroidizing annealing→rough machining→quenching and tempering heat treatment→semi-finishing→ Heat treatment of the roll body→finishing→finished roll. The finished roll is tested: the surface hardness of the roll body is 64HRC, the hardness of the roll neck is 33HRC, and the hardness uniformity is ≤3HSD.

Embodiment 3

[0018] A cold rolling roll with high roughness retention performance, the cold rolling roll includes the following chemical components by weight percentage: C is 1.1%; Si is 0.58%; Mn is 0.30%; Cr is 4.7%; Ni is 0.24% %; Mo is 0.73%; V is 2.03%, W is 1.46%; S≤0.20%; P≤0.20%; the rest is Fe and unavoidable impurities. The raw materials of the above-mentioned cold rolls with high roughness retention performance are smelted in electric furnace→outside furnace refining→vacuum degassing→casting electrode→electroslag remelting→forging→spheroidizing annealing→rough machining→quenching and tempering heat treatment→semi-finishing→ Heat treatment of the roll body→finishing→finished roll. The finished roll is tested: the surface hardness of the roll body is 63HRC, the hardness of the roll neck is 33HRC, and the hardness uniformity is ≤2HSD.

[0019] The sum of the weight percentages of the chemical components of the cold rolling roll with high roughness retention performance in the prese...

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Abstract

The invention discloses a cold-rolled roller with high roughness keeping performance. The cold-rolled roller comprises components of, by weight, 1.00-2.00% of C, 0.30-1.00% of Si, 0.20-1.00% of Mn, 3.50-5.00% of Cr, smaller than or equal to 0.50% of Ni, 0.20-0.80% of Mo, 1.50-2.50% of V, 1.00-2.00% of W, smaller than or equal to 0.20% of S, smaller than or equal to 0.20% of P, and the balance Fe and inevitable impurities. According to the cold-rolled roller, by increasing the content of elements Mo and V, while grain is refined, combination with C is achieved, high-hardness carbide of the MC type, the M2C type and the like is formed, thus the cold-rolled roller has a higher roughness keeping ability and an excellent wear-resisting property, thus the online use time of the roller is prolonged remarkably, the efficiency of a rolling mill is improved, by adding the element W, red hardness of a material is improved, the cold-rolled roller has a better rolling accident resisting ability, and thus the accident cost of the roller can be reduced.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a cold rolling roll with good rolling accident resistance and high roughness retention performance. Background technique [0002] With the upgrading and development of the automobile industry and the construction industry, in recent years, the development of cold-rolled high-strength steel sheets has been particularly rapid, and many large-scale tandem cold rolling mills have also been put into production. High-strength steel has high resistance to rolling deformation, and the corresponding wear and tear on the rolls is relatively serious. If the rolls are replaced frequently, the production efficiency of the unit will be greatly reduced and the output will be affected. Contents of the invention [0003] The purpose of the present invention is to provide a cold rolling roll with high roughness retention performance in view of the defects in the prior art; the cold rolling rol...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/22C22C38/24C22C38/44C22C38/46C21D8/06C21D9/38
CPCC22C38/02C21D8/065C21D9/38C22C38/002C22C38/04C22C38/22C22C38/24C22C38/44C22C38/46
Inventor 史国君陈彬
Owner YIXING YONGCHANG ROLL
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