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Preparation method of laser cladding coating

A laser cladding and coating technology, which is applied in the coating, metal material coating process, etc., can solve problems affecting the quality of laser cladding, and achieve the effect of ensuring the quality and uniform thickness of the cladding layer, and improving the strength and hardness

Inactive Publication Date: 2018-12-21
JIANGXI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above situation, it is necessary to provide a laser cladding coating preparation method for the problem that the uneven thickness of the preset powder affects the quality of laser cladding in the prior art

Method used

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  • Preparation method of laser cladding coating
  • Preparation method of laser cladding coating
  • Preparation method of laser cladding coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044]Add the preset powder aluminum powder, titanium powder and carbon powder to ethanol according to the mass ratio of 6.4:1.8:1.8 and mix them, and put them into a ball mill for low-speed ball milling for 2 hours, and the ball milling speed is controlled at 480r / min to obtain a mixture of preset powders liquid;

[0045] Naturally air-dry the mixture of the above preset powders, and add Na 2 SiO 3 9H 2 O is mixed into a paste, among which, Na 2 SiO 3 9H 2 The mass ratio of O to the preset powder is 1:10;

[0046] Apply the pasty preset powder evenly on the pretreated ZL101 (ZAlSi 7 Mg alloy) and dried at 60°C for 11h, wherein the average thickness of the pasty preset powder coated on the surface of ZL101 is 1mm;

[0047] Place the above-mentioned ZL101 coated with preset powder on the processing platform of CNC milling machine, adjust the feed rate of CNC milling machine to 200mm / min, and the spindle speed to 1500r / min, and process the preset powder surface on the sur...

Embodiment 2

[0050] Add the preset powder aluminum powder, titanium powder and carbon powder to ethanol according to the mass ratio of 7.2:1.4:1.4 and mix them, and put them into a ball mill for low-speed ball milling for 1.6h, and the ball milling speed is controlled at 520r / min to obtain the preset powder. mixed solution;

[0051] Naturally air-dry the mixture of the above preset powders, and add Na 2 SiO 3 9H 2 O is mixed into a paste, among which, Na 2 SiO 3 9H 2 The mass ratio of O to the preset powder is 1:15;

[0052] Apply the paste-like preset powder evenly on the pretreated AZ91 (magnesium alloy), and dry it at 80°C for 7 hours, wherein the average thickness of the paste-like preset powder coated on the surface of AZ91 is 1.2mm;

[0053] Place the above-mentioned AZ91 coated with preset powder on the processing platform of CNC milling machine, adjust the feed rate of CNC milling machine to 260mm / min, and the spindle speed to 1400r / min, and process the preset powder surface ...

Embodiment 3

[0056] Add the preset powder aluminum powder, titanium powder and carbon powder to the deionized water according to the mass ratio of 7.8:1.1:1.1 and mix them, and put them into a ball mill for low-speed ball milling for 2.5 hours, and the ball milling speed is controlled at 520r / min to obtain the preset powder the mixture;

[0057] Dry the mixture of the above preset powders at a temperature of 100°C, and add Na 2 SiO 3 9H 2 O is mixed into a paste, among which, Na 2 SiO 3 9H 2 The mass ratio of O to the preset powder is 1:20;

[0058] Apply the pasty preset powder evenly on the pretreated ZL104 (ZAlSi 9 Mg) and dried at 70°C for 8h, wherein the average thickness of the pasty preset powder coated on the surface of AZ91 is 1.46mm;

[0059] Place the above-mentioned ZL104 coated with preset powder on the processing platform of CNC milling machine, adjust the feed rate of CNC milling machine to 220mm / min, and the spindle speed to 1600r / min, and process the preset powder s...

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Abstract

The invention discloses a preparation method of a laser cladding coating. The preparation method comprises the steps that pre-prepared aluminum powder, titanium powder and carbon powder are added intoethyl alcohol or deionized water according to the mass ratio being 6.4-7.8:1.1-1.8:1.1-1.8 and subjected to ball milling through a ball mill to be sufficiently dispersed, and mixed liquid of the pre-prepared powder is obtained; the mixed liquid of the pre-prepared powder is dried, and mixed with a binding agent to be pasty; a light alloy matrix is coated with the pasty pre-prepared powder and dried; the dried pre-prepared powder is machined by a CNC milling machine to be a pre-prepared layer with the thickness of 0.8-1.2mm; and the pre-prepared layer is clad to the light alloy matrix throughlaser machining equipment. In the embodiment, the pre-prepared aluminum powder, titanium powder and carbon powder are sufficiently dispersed and mixed and mixed with the binding agent to be pasty to be arranged on the surface of the light alloy in a coating mode to form the pre-prepared layer, the CNC milling machine is adopted for strictly controlling the thickness of the pre-prepared layer, thethickness at all positions is uniform, and the quality of the cladding coating is ensured.

Description

technical field [0001] The invention relates to the technical field of laser cladding, in particular to a preparation method of a laser cladding coating. Background technique [0002] Since the emergence of high-power lasers in the 1970s, after more than 40 years of research and accumulation, the laser processing technology of materials has formed a variety of applications including laser welding, laser cutting, and laser surface treatment. At present, laser cladding technology has become one of the mainstream technologies for preparing high-performance metal surface coatings due to its advantages of environmental protection, fast heating and cooling speed, small material action area, and small thermal deformation. [0003] Laser cladding materials are usually two or more elemental elements, compounds, and ceramic mixed powders, placed on the surface of the metal substrate, and irradiated by a high-power laser to melt the metal powder on the surface of the substrate to form ...

Claims

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Application Information

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IPC IPC(8): C23C24/10
CPCC23C24/103
Inventor 吴孝泉
Owner JIANGXI UNIV OF TECH
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