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A roll surface repair material for a high-speed steel roll and a remanufacturing method for a high-speed steel roll

A repair material and remanufacturing technology, which is applied in the field of high-speed steel roll remanufacturing and high-speed steel roll surface repair material, can solve problems such as surface cracking, and achieve the effect of improving service life, improving service life and reasonable composition.

Active Publication Date: 2020-10-02
合肥九州龙腾科技成果转化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a high-speed steel roll surface repair material and a method for remanufacturing a high-speed steel roll. Using the roll surface repair material provided by the invention can easily realize the remanufacture of a high-speed steel roll, and the high-speed steel roll provided by the invention The roll remanufacturing method solves the problem of surface cracking in the repair process of high-speed steel rolls in the prior art

Method used

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  • A roll surface repair material for a high-speed steel roll and a remanufacturing method for a high-speed steel roll
  • A roll surface repair material for a high-speed steel roll and a remanufacturing method for a high-speed steel roll
  • A roll surface repair material for a high-speed steel roll and a remanufacturing method for a high-speed steel roll

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] First, the wear and fatigue layer on the surface of the high-speed steel roll is turned off, and the cutting amount on one side is 0.5mm; the surface of the high-speed steel roll after turning is cleaned with absolute ethanol to remove impurities such as oil; non-destructive testing is carried out on the high-speed steel roll, and magnetic particle inspection is used And ultrasonic flaw detection, check whether there are cracks and other defects, to ensure that the roll has no surface and internal defects; quickly scan the roll surface with a broadband laser, and expand the laser spot from the original 2×14mm rectangular spot to a 0.5×30mm near-line spot through a widening mirror , the scanning power is 3800W, the scanning speed is 1000mm / min, the lap rate is 30%, and the roll surface is subjected to laser annealing treatment; the roll surface high temperature wear resistant cladding material is prepared, which is used for the high temperature wear resistant cladding of t...

Embodiment 2

[0045] First, the wear fatigue layer on the surface of the high-speed steel roll is turned off, and the cutting amount on one side is 1.0mm; the surface of the high-speed steel roll after turning is cleaned with absolute ethanol to remove impurities such as oil stains; non-destructive testing is performed on the high-speed steel roll, and magnetic particle inspection is used And ultrasonic flaw detection, check whether there are cracks and other defects, to ensure that the roll has no surface and internal defects; quickly scan the roll surface with a broadband laser, and expand the laser spot from the original 2×14mm rectangular spot to a 0.5×30mm near-line spot through a widening mirror , the scanning power is 4000W, the scanning speed is 1500mm / min, and the lapping rate is 30%. Laser annealing is carried out on the surface of the roll; the cladding material for high temperature and wear resistance of the roll surface is prepared, which is used for the cladding of the high temp...

Embodiment 3

[0047] First, the wear and fatigue layer on the surface of the high-speed steel roll is turned off, with a cutting amount of 0.6mm on one side; the surface of the high-speed steel roll after turning is cleaned with absolute ethanol to remove impurities such as oil; non-destructive testing is performed on the high-speed steel roll, and magnetic particle inspection is used And ultrasonic flaw detection, check whether there are cracks and other defects, to ensure that the roll has no surface and internal defects; quickly scan the roll surface with a broadband laser, and expand the laser spot from the original 2×14mm rectangular spot to a 0.5×30mm near-line spot through a widening mirror , the scanning power is 3800W, the scanning speed is 1200mm / min, and the lapping rate is 30%. Laser annealing is carried out on the surface of the roll; the cladding material for high temperature and wear resistance of the roll surface is prepared, which is used for the cladding of the high temperat...

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Abstract

The invention provides a roller surface repairing material of a high-speed steel roller and a remanufacturing method of the high-speed steel roller, and belongs to the technical field of metal surfacetreatment. The roller surface repairing material of the high-speed steel roller provided by the invention is prepared from the following components of, in percentage by mass, 0.30%-0.35% of C, 1.0%-1.1% of Si, 5.0%-5.2% of Cr, 1.5%-1.6% of Mo, and the balance Fe. The roller surface repairing material of the high-speed steel roller provided by the invention is reasonable in component content, andis beneficial to obtaining a high-quality cladding layer in the remanufacturing process of the high-speed steel roller; and the remanufacturing high-speed steel roller has high hardness, wear resistance and corrosion resistance, so that the service life of the high-speed steel roller obtained by remanufacturing is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a roll surface repair material for high-speed steel rolls and a remanufacturing method for high-speed steel rolls. Background technique [0002] As a key component of a rolling mill, rolls play a pivotal role in improving the quality of steel products. Among them, high-speed steel rolls with better comprehensive performance have been widely used. High-speed steel rolls have excellent impact resistance, and their high-temperature wear resistance is more than three times higher than that of traditional cast steel rolls. [0003] Although the high-speed steel roll has excellent performance, its cost is relatively high, which virtually increases the production cost of metallurgical enterprises. Moreover, due to the high surface hardness of the high-speed steel roll and the large heat input during the welding process, after the high-speed steel roll is worn out, tradi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10C22C38/02C22C38/22
CPCC22C38/02C22C38/22C23C24/106
Inventor 付宇明付晨张钰郑丽娟
Owner 合肥九州龙腾科技成果转化有限公司