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Roll surface repair material of wrapper roll and laser cladding remanufacturing method of wrapper roll

A technology of repairing materials and laser cladding, which is applied in the coating process and coating of metal materials, and can solve the problem of low service life of the roll-helping roller

Active Publication Date: 2020-07-07
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

However, the laser cladding method is prone to the problem of soft and hard bands, that is, the hardness of the lap joint is lower than that of the melting channel, which will cause the lap joint to wear and corrode first, resulting in a low service life of the repaired rolling roll

Method used

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  • Roll surface repair material of wrapper roll and laser cladding remanufacturing method of wrapper roll
  • Roll surface repair material of wrapper roll and laser cladding remanufacturing method of wrapper roll
  • Roll surface repair material of wrapper roll and laser cladding remanufacturing method of wrapper roll

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Prepare the roll surface repair material for the rolling aid roll, in terms of mass percentage, including the following element components: C1.4%; Si0.2%; Cr3.5%; Mn0.5%; W12.5%; V4.5% ; Co4.7%; the balance is Fe, and the particle size of the restoration material is 135-325 mesh.

[0050] The preparation method of the restoration material is the gas atomization method.

[0051] Follow the steps below to remanufacture the laser cladding roll:

[0052] (1) Turning is carried out to the roll surface of roll-assisting roll, and unilateral turning thickness is 1.0mm, and the roll surface after turning is washed and non-destructive testing, and non-destructive testing is qualified, obtains pretreatment roll-helping roll;

[0053] (2) Cladding the roll surface repair material on the surface of the pretreatment roll in step (1) through broadband laser cladding, the broadband spot of laser cladding is a rectangular spot of 1 × 30mm, the laser scanning power is 5600W, and the sc...

Embodiment 2

[0056] Prepare the roll surface repairing material for the rolling aid roll, including the following components in mass percentage: C1.6%; Si0.4%; Cr5.2%; Mn0.6%; W13.2%; V5.6%; Co5.2%; the balance is Fe, and the particle size of the restoration material is 135-325 mesh.

[0057] Follow the steps below to remanufacture the laser cladding roll:

[0058] (1) Turning is carried out to the roll surface of roll-assisting roller, and unilateral turning thickness is 1.2mm, and the roll surface after turning is washed and non-destructive testing, and non-destructive testing is qualified, obtains pretreatment roll-helping roll;

[0059] (2) Cladding the roll surface repair material on the surface of the pretreatment roll in step (1) through broadband laser cladding, the broadband spot of laser cladding is a rectangular spot of 1 × 30mm, the laser scanning power is 6000W, and the scanning speed is 650mm / min, with a lap rate of 10%, the laser cladding remanufacturing roll is obtained, a...

Embodiment 3

[0062] Prepare the roll surface repair material for the rolling aid roll, including the following components in mass percentage: C1.5%; Si0.3%; Cr3.5%; Mn0.5%; W12.5%; V4.5%; Co4.7%; the balance is Fe, and the particle size of the restoration material is 135-325 mesh.

[0063] Follow the steps below to remanufacture the laser cladding roll:

[0064] (1) Turning is carried out to the roll surface of roll-assisting roll, and unilateral turning thickness is 1.0mm, and the roll surface after turning is washed and non-destructive testing, and non-destructive testing is qualified, obtains pretreatment roll-helping roll;

[0065] (2) Cladding the roll surface repair material on the surface of the pretreatment roll in step (1) through broadband laser cladding, the broadband spot of laser cladding is a rectangular spot of 1 × 30mm, the laser scanning power is 5600W, and the scanning speed is 450mm / min, the overlap rate is 5%, and the laser cladding is obtained to remanufacture the rol...

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Abstract

The invention provides a roll surface repair material of a wrapper roll and a laser cladding remanufacturing method of the wrapper roll, and belongs to the technical field of repair of wrapper rolls.The roll surface repair material of the wrapper roll has high wear resistance, high temperature resistance and corrosion resistance, the roll surface repair material is clad on the surface of the wrapper roll by wide-band laser cladding, the cladding efficiency can be improved, the remanufactured wrapper roll has higher hardness, high temperature resistance, wear resistance and corrosion resistance, and the service life of the remanufactured wrapper roll is greatly prolonged; and meanwhile, surface cracking of the wrapper roll and the problem of hard and soft strip in the using process of theremanufactured wrapper roll can be avoided, and the uniform wear of a cladding layer is achieved.

Description

technical field [0001] The invention relates to the technical field of winding aid roller repair, in particular to a roll surface repairing material for winding aid rollers and a laser cladding remanufacturing method for winding aid rollers. Background technique [0002] As the key equipment for strip steel production, the coiling aid roller plays a pivotal role in improving the quality of steel products, and can accurately send the strip head around the reel. The working conditions of the coiling roll are harsh. In actual production, the coiling roll needs to work under high temperature, high pressure, high speed, and high impact load, which makes its service life short and the surface wear is serious, which greatly affects the surface quality of the strip. [0003] For the worn roller, it needs to be repaired with roller surface repair materials before it can continue to be used. Due to the harsh working conditions of the rolling aid roller, the roller surface repair mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/22C22C38/24C22C38/30C23C24/10
CPCC22C38/02C22C38/04C22C38/22C22C38/24C22C38/30C23C24/103
Inventor 付宇明付晨郑丽娟
Owner 合肥九州龙腾科技成果转化有限公司
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