A shock-resistant and wear-resistant material for laser manufacturing

A technology of impact resistance, wear resistance and laser, which is applied in the coating process of metal materials, coatings, etc., can solve the problems of decreased impact resistance, deterioration of impact resistance, and affecting the service life of workpieces, so as to improve service life and reduce maintenance and maintenance time, the effect of reducing manpower loss

Active Publication Date: 2021-04-27
沈阳大陆激光工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The working conditions of a large number of components, such as the hammer head of the jaw plate of the crusher, the liner of the ball mill, and the grinding ball, are the combined effects of impact and wear, and the improvement of wear resistance will directly lead to the decline of impact resistance and seriously affect the service life of the workpiece. It is an irreconcilable contradiction under impact and wear conditions. At the same time, when the impact and wear-resistant layer is prepared by the traditional preparation method, there are segregation of the structure and the network distribution of the hard phase, which will deteriorate the impact resistance.

Method used

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  • A shock-resistant and wear-resistant material for laser manufacturing
  • A shock-resistant and wear-resistant material for laser manufacturing

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Embodiment 1

[0015] Use 6KW fiber laser to develop and design wear-reducing and heat-resisting iron-based alloy powder. The material composition ratio is as follows: by weight percentage, including C: 3.0%, Cr: 19%, Si: 1.00%, Ni: 0.55%, Mn: 1.3%, W: 2.4%,: V: 16.2%, B: 1.0%, Nb: 8%, Y: 0.9%, the balance is Fe and unavoidable impurities, and laser manufacturing is performed on the ball mill liner. Firstly, determine the base material of the trial sample block to be 35CrMo, and the size of the sample block is 100mm×100mm×20mm. Firstly, the surface of the sample is cleaned, and the oil is removed by cleaning with acetone; the impact-resistant and wear-resistant alloy powder is baked at 200°C for 1.5h Dry processing. Surface heating equipment is used to rapidly heat the workpiece surface to 200°C and laser equipment is heated synchronously. After the laser cladding conditions are met, the cladding process parameters are adopted: power 3800W, spot circle diameter 3.4mm, scanning speed 1100mm / m...

Embodiment 2

[0018] Using a 4KW solid-state laser, the wear-reducing and heat-resistant cobalt-based alloy powder is developed and designed. The material composition ratio is as follows: by weight percentage, C: 3.4%, Cr: 17%, Si: 1.20%, Ni: 0.8%, Mn: 0.95%, W: 3.5%, V: 19%, B: 1.3%, Nb: 8.20%, Y: 0.9%, and the balance is Fe and unavoidable impurities. Firstly, it is determined that the base material of the trial sample block is 45 steel, and the size of the sample block is 100mm×100mm×20mm. First, the surface of the sample is cleaned, and the oil is removed by cleaning with acetone; the impact-resistant and wear-resistant alloy powder is kept at 200°C for 1.5h Drying process. The surface heating equipment is used to inductively and rapidly heat the workpiece surface to 230°C and the laser equipment is heated synchronously. After the laser cladding conditions are met, the cladding process parameters are adopted: power 4000W, spot circle diameter 4.0mm, scanning speed 1000mm / min, lap rate ...

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Abstract

The invention provides an impact-resistant and wear-resistant material for laser manufacturing, which is composed of the following components in mass percentage: C: 2.9-3.8%, Cr: 15-23%, Si: 1.00-1.30%, Ni: 0.2-0.95 %, Mn: 0.9-1.5%, W: 2-5.5%, V: 14-21%, B: 0.8-1.8%, Nb: 5.50-10%, Y: 0.8-2.3%, the balance is Fe and not Avoid impurities. The impact-resistant and wear-resistant iron-based alloy powder for laser cladding provided by the invention has the properties of impact resistance, corrosion resistance and wear resistance, and can be used for laser manufacturing of large and medium-sized parts in complex working conditions such as large crushers. The composite wear-resistant parts prepared by laser can meet the needs of complex working conditions on the comprehensive mechanical properties of the work surface. At the same time, the matrix can be made of low-cost common materials, and the used matrix can be reused by laser manufacturing; this paper The invention can not only provide the utilization rate of the overall material of the parts, but also can improve the service life of a single time, reduce maintenance and overhaul time, increase resource utilization rate, and reduce manpower loss.

Description

technical field [0001] The invention belongs to the technical field of laser cladding, and in particular relates to a laser-made impact-resistant and wear-resistant alloy powder. Background technique [0002] The history of laser manufacturing technology is not long, but since its birth and development, there have been a large number of engineering applications in the fields of aerospace, automobile industry, metallurgy, petrochemical, large electric power rotors, etc., but there is no powder specifically for laser manufacturing. The technical advantage of laser manufacturing is to use high-energy laser beams to quickly form an alloy layer completely different from the matrix on the surface of the substrate by using powder. At the same time, a certain amount of substrate material will be diluted into the alloy layer, that is, the composition of the alloy layer and the design composition of the powder will deviate. , while a large number of existing powder designs have not co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/56C22C38/54C22C38/48C22C38/46C22C38/44C22C38/04C22C38/02C23C24/10
CPCC22C38/005C22C38/02C22C38/04C22C38/44C22C38/46C22C38/48C22C38/54C22C38/56C23C24/106
Inventor 王敏陈海涛董思远
Owner 沈阳大陆激光工程技术有限公司
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