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Structure and method for improving bonding strength of wear-resistant anti-fatigue coating based on texture combined pattern

A technology of bonding strength and combination pattern, applied in the direction of coating, metal material coating process, melting spray plating, etc., can solve the problems of difficult control, irregular pattern, substrate deformation, etc., to improve the bonding strength and spray coating. Strength, the effect of improving the bonding force

Inactive Publication Date: 2017-09-22
ACADEMY OF ARMORED FORCES ENG PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, chemical degreasing will produce chemical reactions on the surface, introduce new oxides, cause changes in the chemical composition of the substrate surface, and the chemicals used are harmful to the human body and the environment; roughness, but the resulting pattern is irregular and not easy to control, and the sandblasting process will cause the deformation of the substrate, and even make the surface of the substrate have microscopic cracks
It can be seen that the traditional roughening treatment before spraying can not effectively improve the bonding force of the coating

Method used

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  • Structure and method for improving bonding strength of wear-resistant anti-fatigue coating based on texture combined pattern
  • Structure and method for improving bonding strength of wear-resistant anti-fatigue coating based on texture combined pattern
  • Structure and method for improving bonding strength of wear-resistant anti-fatigue coating based on texture combined pattern

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Experimental program
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Effect test

Embodiment 1

[0025] The present invention provides a method for improving the bonding strength of wear-resistant and anti-fatigue coatings based on texture combination patterns. The method specifically includes the following steps:

[0026] S11 substrate pretreatment step, grinding and cleaning the surface of the substrate to remove impurities on the surface of the substrate and improve the spraying effect;

[0027] S12 Preparation of textured patterns: based on bionics, use laser process to texture the combined patterns of regular hexagons and grooves on the surface of the substrate;

[0028] S13 parameter adjustment: adjust the spraying process parameters and textured pattern parameters according to the textured pattern formed in step S12, so as to obtain a textured pattern formed by an alternating combination of regular hexagons and grooves. In the textured pattern, The distance between adjacent regular hexagons and the groove shape is 60 microns, the side length of the regular hexagon ...

Embodiment 2

[0032] The present invention provides a method for improving the bonding strength of wear-resistant and anti-fatigue coatings based on texture combination patterns. The method specifically includes the following steps:

[0033] S21 substrate pretreatment step, the surface of the substrate is polished and cleaned to remove impurities on the surface of the substrate and improve the spraying effect;

[0034] S22 Preparation of textured patterns: based on bionics, use laser process to texture the combined patterns of regular hexagons and grooves on the surface of the substrate;

[0035] S23 Parameter adjustment: adjust the spraying process parameters and textured pattern parameters according to the textured pattern formed in step S22, so as to obtain a textured pattern formed by an alternating combination of regular hexagons and grooves. In the textured pattern, The distance between adjacent regular hexagons and grooves is 60 meters, the side length of the regular hexagon is 30 mi...

Embodiment 3

[0039] The present invention provides a method for improving the bonding strength of wear-resistant and anti-fatigue coatings based on texture combination patterns. The method specifically includes the following steps:

[0040] S31 substrate pretreatment step, the surface of the substrate is polished and cleaned to remove impurities on the surface of the substrate and improve the spraying effect;

[0041] S32 Preparation of textured patterns: based on bionics, use laser process to texture the combined patterns of regular hexagons and grooves on the surface of the substrate;

[0042] S33 Parameter adjustment: adjust the spraying process parameters and textured pattern parameters according to the textured pattern formed in step S32, so as to obtain a textured pattern formed by alternating combinations of regular hexagons and grooves. In the textured pattern, The distance between adjacent regular hexagons and grooves is 60 microns, the side length of the regular hexagon is 45 mic...

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Abstract

The invention provides a structure and method for improving the bonding strength of a wear-resistant anti-fatigue coating based on a texture combined pattern. The method comprises the steps of textured pattern preparation, parameter adjustment, coating spraying, a test of the bonding strength of the coating, check and the like. According to the method, the bonding strength of the spraying coating is improved through the textured pattern formed by the combination of the regular hexagonal shape and the trench shape, and compared with an existing method for improving the strength of the coating through texturing, by the adoption of the structure and method, the textured pattern parameters are optimized; and the method serves as the process of the treatment before spraying, the textured pattern with the regular hexagonal shape and the trench shape alternately arranged is pre-arranged on the surface of a material, the mechanism of the improvement in the strength of the spraying coating of the texture pattern formed by alternately combining the regular hexagonal shape and the trench shape is explored, the bonding force of the coating and a base body is improved, and the structure and method are applied to the field of engineering practice easily for prolonging the service life of the spraying coating.

Description

technical field [0001] The invention relates to the technical field of coating materials, in particular to a structure and method for improving the bonding strength of wear-resistant and anti-fatigue coatings based on the alternating combination of regular hexagons and grooves to form texture patterns. Background technique [0002] Plasma spraying coating can realize the processing of large-sized parts, and can get a thicker coating thickness, so it is widely used in the engineering field, but because of the mechanical combination with the substrate, which leads to the spray coating The bonding strength is low, and the bonding strength between the substrate and the coating is a crucial factor affecting the service performance of thermal sprayed coatings. If the sprayed coating has weak bonding strength, it is prone to failure behavior at the coating interface during service. Therefore, many methods have been applied to the pre-spraying treatment, such as shot peening and che...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/134C23C4/10C23C4/02
CPCC23C4/134C23C4/02C23C4/10
Inventor 邢志国王海斗马国政谭娜
Owner ACADEMY OF ARMORED FORCES ENG PLA