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Laser cladding powder presetting method

A laser cladding and powder technology, applied in the direction of metal material coating process, coating, etc., can solve the problems of cladding powder splash and other problems, and achieve the effect of uniform thickness, smooth surface and good cladding effect.

Inactive Publication Date: 2020-04-24
GUANGDONG OCEAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a laser cladding powder preset method to solve the problem of cladding powder splashing, so as to obtain a uniform laser cladding layer

Method used

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  • Laser cladding powder presetting method

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Experimental program
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Effect test

Embodiment 1

[0035] First, pre-treat the surface of the substrate to be clad, clean the surface of dust, oil or rust, and dry to obtain a clean and dry substrate surface;

[0036] Then, the substrate to be clad is fixed on the sample holder, and the cladding powder is evenly paved on the surface of the substrate (powder composition: Fe 70wt%, Mo 2wt%, B 5wt%, Cr 4wt%, W 8wt%, Ni 3wt%, Si 5wt%, Mn 3wt%);

[0037] Then, the chemical glue is evenly sprayed onto the surface of the cladding powder, and the spraying amount is 4wt% of the cladding powder;

[0038] Finally, a semiconductor coupled laser is used for laser cladding operation, and an argon protective atmosphere is used during cladding; the process parameters used for laser cladding in this embodiment are: laser power 1500W, spot diameter 5mm, and cladding speed 350mm / min.

Embodiment 2

[0040] First, pre-treat the surface of the substrate to be clad, clean the surface of dust, oil or rust, and dry to obtain a clean and dry substrate surface;

[0041] Then, the substrate to be clad is fixed on the sample holder, and the cladding powder is evenly paved on the surface of the substrate (powder composition: Co 38.5wt%, Ni 32wt%, Cr 21wt%, Al 8wt%, Y0.5wt% %);

[0042] Then, the chemical glue is evenly sprayed onto the surface of the cladding powder, and the spraying amount is 4wt% of the cladding powder;

[0043] Finally, a semiconductor coupled laser is used for laser cladding, and an argon protective atmosphere is used during cladding; the process parameters used for laser cladding in this embodiment are: laser power 1500W, spot diameter 5mm, and cladding speed 300mm / min.

Embodiment 3

[0045] First, pre-treat the surface of the substrate to be clad, clean the surface of dust, oil or rust, and dry to obtain a clean and dry substrate surface;

[0046] Then, the substrate to be clad is fixed on the sample holder, and the cladding powder is evenly paved on the surface of the substrate (powder composition: Fe 70wt%, Mo 2wt%, B 5wt%, Cr 4wt%, W 8wt%, Ni 3wt%, Si 5wt%, Mn 3wt%);

[0047] Then, the chemical glue is evenly sprayed onto the surface of the cladding powder, and the spraying amount is 8wt% of the cladding powder;

[0048] Finally, a semiconductor coupled laser is used for laser cladding operation, and an argon protective atmosphere is used during cladding; the process parameters used for laser cladding in this embodiment are: laser power 1500W, spot diameter 5mm, and cladding speed 350mm / min.

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Abstract

The invention discloses a laser cladding powder presetting method, and belongs to the technical field of laser cladding. The method comprises the following steps of (1) pretreating the surface of a cladding substrate material to be clad, cleaning dust, oil stain or rust on the surface, and drying after pretreatment; (2) evenly laying cladding powder on the surface of the substrate material; (3) spraying chemical glue on the surface of the preset cladding powder, and fixing the preset cladding powder; and (4) airing the chemical glue until the chemical glue is dry, thus completing the laser cladding powder presetting. According to the method, metal powder is fixed through a method of spraying a layer of the chemical glue, so that the thickness of the metal powder can be kept uniform in thelaser cladding process. Due to the fact that the chemical glue can volatilize under the high-temperature condition, components of the cladding layer are not affected, the good cladding effect can be achieved, and the surface after cladding is flat and smooth.

Description

technical field [0001] The invention relates to the technical field of laser cladding, in particular to a laser cladding powder preset method. Background technique [0002] Laser cladding technology has been developed for nearly half a century. It was the United States that first started to use laser cladding technology. AVCO company conducted the first test on wearable parts and achieved success. Later, the British Rolls.Royce company used laser cladding technology to clad a layer of Co-based alloy protective coating on the engine blades. By testing the hardness and wear resistance of the cladding layer, the surface properties of the cladding layer were well improved. Laser cladding technology produces huge economic benefits. Therefore, laser cladding technology is very popular in many production fields and has great potential for development. [0003] Laser cladding technology is a technology for modifying the surface of materials. It has been widely used in the improvem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
CPCC23C24/103
Inventor 黄江师文庆李思东安芬菊谢玉萍
Owner GUANGDONG OCEAN UNIVERSITY
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