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Laser cladding repair material and remanufacturing method for sintering four-roller four-roller crusher

A technology of laser cladding and repairing materials, which is applied in the coating process and coating of metal materials, which can solve the problems of general wear resistance of the surfacing layer, large processing volume, waste of alloys, etc., achieve reasonable composition content, and improve the use of The effect of improving life and service life

Active Publication Date: 2021-06-29
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

[0003] The invention provides a laser cladding remanufacturing method for sintered four-roller crusher four-roller. By adopting the laser cladding repair material for four-roller crusher four-roller provided by the invention, it is easy to realize the remanufacturing of four-roller crusher four-roller, and the present invention provides The four-roller remanufacturing method of the crusher solves the problems that existing technologies such as submerged arc welding easily lead to large thermal deformation after repair, resulting in large follow-up processing, waste of alloy, and general wear resistance of the surfacing layer. Materials and laser cladding remanufacturing methods increase the service life of the four rollers after remanufacturing, and the actual service life is more than twice that of the four rollers repaired by submerged arc surfacing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Firstly, the laser cladding repair material for sintered four-roller crusher four-roller was prepared, in terms of mass percentage, including the following components: C 0.35%, Cr 25%, Ni 4.5%, Si 1.3%, Mo 2.3%, SiC 1.5%, The balance is Fe; the particle size of the prepared laser cladding repair material is 135-325 mesh; the outer surface of the worn four-roller of the crusher is turned, and the thickness of unilateral turning is 5.0mm; Treat the outer surface of the four-roller of the crusher; carry out laser cladding, the laser spot is a rectangular spot of 2×14mm, the laser scanning power is 3800W, and the gravity powder feeding method is adopted. The laser scanning speed is 500mm / min, and the overlap rate The thickness of the obtained cladding layer is 6.0mm; the cladding layer is turned to make the surface finish of the cladding layer reach Ra1.6; the remanufactured crusher is packaged in four rolls stand-by.

[0033] The hardness of the four rollers of the crushe...

Embodiment 2

[0035] Firstly, the laser cladding repair material for sintering the four rollers of the four-roll crusher is prepared, in terms of mass percentage, including the following components: C 0.45%, Cr 27%, Ni 5.6%, Si 1.5%, Mo 2.7%, SiC 2.5%, The balance is Fe; the particle size of the prepared laser cladding repair material is 135-325 mesh; the outer surface of the worn four-roller of the crusher is turned, and the thickness of unilateral turning is 7.0mm; Treat the outer surface of the four-roller of the crusher; laser cladding is carried out, the laser spot is a rectangular spot of 2×14mm, the laser scanning power is 4000W, the gravity powder feeding method is adopted, the laser scanning speed is 650mm / min, and the lap rate 50%, prepared by multi-layer cladding, the thickness of the obtained cladding layer is 8.0mm; the cladding layer is turned to make the surface finish of the cladding layer reach Ra1.6; the remanufactured crusher is packaged in four rolls stand-by.

[0036] ...

Embodiment 3

[0038]First prepare the laser cladding repair material for sintering the four rolls of the four-roll crusher, in terms of mass percentage, including the following components: C 0.37%, Cr 25%, Ni 4.5%, Si 1.3%, Mo 2.7%, SiC 2.5%, The balance is Fe; the particle size of the prepared laser cladding repair material is 135-325 mesh; the outer surface of the worn four-roller of the crusher is turned, and the thickness of unilateral turning is 6.0mm; the turned surface is cleaned to obtain the desired Treat the outer surface of the four-roller of the crusher; carry out laser cladding, the laser spot is a rectangular spot of 2×14mm, the laser scanning power is 4000W, the gravity powder feeding method is adopted, the laser scanning speed is 600mm / min, and the overlapping rate 50%, prepared by multi-layer cladding, the thickness of the obtained cladding layer is 7.0mm; the cladding layer is turned to make the surface finish of the cladding layer reach Ra1.6; the remanufactured crusher is...

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Abstract

The invention provides a laser cladding remanufacturing method for four rolls of a sintered four roll crusher, which belongs to the technical field of metal surface treatment. The laser cladding repair material for the four-roller of the crusher provided by the present invention includes the following components in terms of mass percentage: C: 0.35% to 0.45%, Cr: 25% to 27%, Ni: 4.5% to 5.6%, Si : 1.3% to 1.5%, Mo: 2.3% to 2.7%, SiC: 1.5% to 2.5%, and the balance is Fe. The four-roller laser cladding repair material for crushers provided by the present invention has a reasonable component content, which is conducive to obtaining a high-quality laser cladding layer in the remanufacturing process of four-roller laser cladding for crushers, and makes the four-roller laser cladding obtained after remanufacturing The rollers have high hardness and wear resistance, which greatly improves the service life of the four rollers of the crusher after remanufacturing.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a laser cladding repair material and a remanufacturing method for sintering four rolls of a four roll crusher. Background technique [0002] The four-roll crusher is widely used in the sintering production of iron and steel enterprises, and it is mainly used for crushing coke. In actual production, due to the high hardness of coke, the four-roller used for crushing has a short service life and wears quickly. Generally, after 3 to 4 months of continuous use, it needs to be shut down for disassembly and surfacing repair, which not only affects the continuous production How to improve the service life of the four-roller of the crusher and reduce the loss of downtime and disassembly has become a technical problem for iron and steel enterprises. At present, iron and steel enterprises use submerged arc surfacing welding to repair the four rollers of the crusher. Howeve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10C22C38/44C22C38/34
CPCC22C38/34C22C38/44C23C24/103
Inventor 付宇明付晨张钰郑立娟
Owner 合肥九州龙腾科技成果转化有限公司