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Method for prolonging service life of slitting wheel of rolling mill

A cutting wheel and rolling mill technology, applied in metal rolling, metal rolling, arc welding equipment, etc., can solve the problems of frequent replacement, short life, wear of cutting wheel, etc., to increase service life and improve wear resistance , Improve the effect of red hardness

Active Publication Date: 2015-04-22
安徽东方新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for improving the service life of the cutting wheel in rolling mills in order to solve the problems of severe wear, short life and frequent replacement of the cutting wheel in service

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 1. Micro-alloying: In order to improve the service life of the rolling mill slitting wheel, the original slitting wheel material Cr12MoV is micro-alloyed, and the metal element tungsten with a weight ratio of 0.5% is added to the original slitting wheel material Cr12MoV, and the obtained material The hardness is HRC61, and the wear resistance is increased by 40%.

[0046] 2. Repair and regeneration: On the basis of the general cutting wheel, the diameter of the beveled edge of the cutting wheel is increased by 14mm. When the cutting wheel is worn to a certain extent, the cutting process is used to remove the periphery of the cutting wheel and reduce the cutting. Reduce the bevel diameter of the wheel by 1.5mm, and then continue to use it. With such recycling, the splitting wheel can be reused 4 times, increasing the service life by 4 times.

[0047] 3. Overlay welding regeneration: After the slitting wheel has been mechanically processed and reused for 4 times, when it...

Embodiment 2

[0049] 1. Microalloying: In order to improve the service life of the rolling mill slitting wheel, the original slitting wheel material Cr12MoV is micro-alloyed, and the metal element tungsten with a weight ratio of 0.6% is added to the original slitting wheel material Cr12MoV, and the obtained material The hardness is HRC62, and the wear resistance is increased by 46%.

[0050] 2. Repair and regeneration: On the basis of the general cutting wheel, the diameter of the beveled edge of the cutting wheel is increased by 14mm. When the cutting wheel is worn to a certain extent, the cutting process is used to remove the periphery of the cutting wheel and reduce the cutting. Reduce the bevel diameter of the wheel by 1.5mm, and then continue to use it. With such recycling, the splitting wheel can be reused 4 times, increasing the service life by 4 times.

[0051] 3. Overlay welding regeneration: After the slitting wheel has been mechanically processed and reused for 4 times, when it ...

Embodiment 3

[0053] 1. Micro-alloying: In order to improve the service life of the rolling mill slitting wheel, the original slitting wheel material Cr12MoV is micro-alloyed, and the metal element tungsten with a weight ratio of 0.5% is added to the original slitting wheel material Cr12MoV, and the obtained material The hardness is HRC61, and the wear resistance is increased by 40%.

[0054] 2. Repair and regeneration: On the basis of the general cutting wheel, the diameter of the beveled edge of the cutting wheel is increased by 15mm. When the cutting wheel is worn to a certain extent, the cutting process is used to remove the periphery of the cutting wheel and reduce the cutting. Reduce the bevel diameter of the wheel by 1.5mm, and then continue to use it. With such recycling, the cutting wheel can be reused 5 times, increasing the life span by 5 times.

[0055] 3. Overlay welding regeneration: After the cutting wheel is worn out again after 5 times of mechanical processing and repeated...

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Abstract

The invention discloses a method for prolonging the service life of a slitting wheel of a rolling mill. The method is characterized in that microalloying is carried out on the basis of the original Cr12MoV material of the slitting wheel for improving the abrasive resistance and the high-temperature strength of the slitting wheel, a metal element-tungsten is added to enable the average hardness of the slitting wheel to reach HRC60-63, the abrasive resistance is greatly improved and the service life of the slitting wheel is prolonged; the external profile dimension of the slitting wheel is increased by 15mm on the basis of the traditional slitting wheel, the diameter of the beveled edge of the slitting wheel is reduced by 1.5-2mm after the slitting wheel is abraded, and the service life of the slitting wheel is further prolonged; and when the slitting wheel is abraded severely, a D322 lime-titania type electrode is adopted to be overlaid on the slitting wheel, and the service life of the slitting wheel can be prolonged again. According to the method, the abrasive resistance of the slitting wheel can be effectively enhanced, the service life of the slitting wheel can be prolonged greatly and remarkable economic benefit can be created for enterprises.

Description

technical field [0001] The invention belongs to the field of preparation and regeneration manufacturing of a rolling mill part splitting wheel, and in particular relates to a rolling mill splitting wheel and a regeneration manufacturing process thereof. Background technique [0002] The splitting guide box is a key component to realize the splitting and rolling of rods and wires, and the splitting wheel is the core component. Compared with single-line rolling, split rolling has higher output, energy saving and lower cost. For example, two split wheels can increase output by 170%, energy consumption by 30%, and cost by 30%; three split wheels can increase output by 210%. , Energy consumption reduced by 45%, cost reduced by 45%. However, the working environment of the cutting wheel is harsh, and the cutting edge is in contact with the high-temperature rolled piece at about 1000 ° C; the cooling water makes the cutting wheel in a state of alternating rapid cooling and rapid he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/24C22C38/46B23P6/00B23K9/04B21B15/00
Inventor 徐庆云赵家柱赵仕堂吴鹏季方张有德李怡萌
Owner 安徽东方新材料有限公司
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