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A laser cladding process

A laser cladding and process technology, which is applied in the coating process and coating of metal materials, can solve the problems of high environmental pollution, chrome plating process materials and high processing costs, achieve good wear resistance, save coating costs, The effect of reducing environmental pollution

Active Publication Date: 2021-02-19
佛山市南海区科琎精密机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a laser cladding process, which overcomes the defects of high material and processing costs and great environmental pollution in the chrome plating process, and is suitable for industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A laser cladding process, comprising the following steps:

[0027] S1: Pretreatment: Clean the surface of metal components, and use acetone or thinner to remove surface oil.

[0028] S2: Preheating: preheating the metal component in a heat treatment furnace.

[0029] S3: Laser cladding: use semiconductor lasers and add prefabricated alloy powder for laser cladding. The particle size of the alloy powder is 100-270 mesh, and the purity is not less than 99%. The process parameters of laser cladding are: laser power P= 3000W; scanning rate V=30mm / s; spot size, where the spot size is L*W=5mm*5mm; lap rate: 50%; cladding layer thickness: 0.2mm; cladding layer thickness: 0.2mm; laser The supply speed of alloy powder during cladding is 38-40g / min.

[0030] S4: Post-processing: Rapid cooling after laser irradiation leaves, and grinding and polishing the surface of the metal component after cooling.

[0031] The cobalt-based alloy is used as the alloy powder for laser cladding...

Embodiment 2

[0033] A laser cladding process, comprising the following steps:

[0034] S1: Pretreatment: Clean the surface of metal components, and use acetone or thinner to remove surface oil.

[0035] S2: Preheating: preheating the metal component in a heat treatment furnace.

[0036] S3: Laser cladding: use semiconductor lasers and add prefabricated alloy powder for laser cladding. The particle size of the alloy powder is 100-270 mesh, and the purity is not less than 99%. The process parameters of laser cladding are: laser power P= 3000W; scanning rate V=30mm / s; spot size, where the spot size is L*W=5mm*5mm; lap rate: 50%; cladding layer thickness: 0.15-0.3mm; cladding layer thickness: 0.2mm ; The supply speed of alloy powder is 38~40g / min.

[0037] S4: Post-processing: Rapid cooling after laser irradiation leaves, and grinding and polishing the surface of the metal component after cooling.

[0038] The nickel-based alloy is used as the alloy powder for laser cladding, wherein the di...

Embodiment 3

[0040] A laser cladding process, comprising the following steps:

[0041] S1: Pretreatment: Clean the surface of metal components, and use acetone or thinner to remove surface oil.

[0042] S2: Preheating: preheating the metal component in a heat treatment furnace.

[0043] S3: Laser cladding: use semiconductor lasers and add prefabricated alloy powder for laser cladding. The particle size of the alloy powder is 100-270 mesh, and the purity is not less than 99%. The process parameters of laser cladding are: laser power P= 3000W; scanning rate V=30mm / s; spot size, where the spot size is L*W=5mm*5mm; lap rate: 50%; cladding layer thickness: 0.15-0.3mm; cladding layer thickness: 0.2mm ; The supply speed of alloy powder is 38~40g / min.

[0044] S4: Post-processing: Rapid cooling after laser irradiation leaves, and grinding and polishing the surface of the metal component after cooling.

[0045] The iron-based alloy is used as the alloy powder for laser cladding, wherein the diam...

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PUM

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Abstract

The invention relates to the technical field of laser processing, in particular to a laser cladding process. Including the following steps: S1: cleaning the surface of the metal component, using a detergent to remove surface oil; S2: preheating the metal component in a heat treatment furnace; S3: using a laser and adding prefabricated alloy powder for laser cladding; S4: laser After the radiation leaves, it is cooled rapidly, and the surface of the metal component is ground and polished after cooling. The invention is suitable for industrial production, can replace the chrome-plating process, saves coating cost, and reduces environmental pollution; the obtained coating has high hardness, good wear resistance, and better combination of the coating and the workpiece surface.

Description

technical field [0001] The invention relates to the technical field of laser processing, in particular to a laser cladding process. Background technique [0002] In the field of construction machinery, many shaft metal components have requirements for corrosion resistance and wear resistance on the surface, and special surface treatment is required. Chromium plating on the surface of metal components is a commonly used treatment process. The chrome-plated layer has good chemical stability, but the amount of precious metals and water used in the chrome-plating process is large, and the environmental pollution is serious; and the combination of the chrome-plated layer and the surface of the metal component is a non-metallurgical combination, and the electroplating layer is easily partially damaged, causing the entire metal component scrapped. The laser cladding layer has the characteristics of high hardness and good wear resistance, and is a good substitute for the chromium p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10C22C19/07
CPCC22C19/07C23C24/103
Inventor 董云山
Owner 佛山市南海区科琎精密机械有限公司
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