A method and device for preparing a wear-resistant coating based on laser shock wave technology

A wear-resistant coating, shock wave technology, applied in the field of parts remanufacturing, to achieve high density, improve the ability to resist shock loads, reduce friction coefficient and wear rate.

Active Publication Date: 2017-04-12
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the technical problems existing in the preparation of existing coatings, the present invention provides a method and device for preparing wear-resistant coatings based on laser shock wave technology

Method used

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  • A method and device for preparing a wear-resistant coating based on laser shock wave technology
  • A method and device for preparing a wear-resistant coating based on laser shock wave technology

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Embodiment Construction

[0029] This embodiment provides a preparation method and device for embedding Al particles into a WC—Co hard material coating driven by laser shock waves.

[0030] The inventive device includes a laser generator 1, a light guiding and splitting system, an arc liquid making system, a workpiece fixture system, and a control system. The light guide and split system includes light guide tube 2, main laser pulse beam 3, impact head 4, optical template 5, convex lens 6, concave lens 7 and side plate 16; the arc liquid making system includes intake pipe 8, power supply 9, motor 10, Reducer 11, roller 12, wire reel 13, metal spraying wire 14, electrode 15, side plate 16; workpiece fixture system includes plasma spray gun 18, workpiece 22, fixture 23, five-axis worktable 24 and recovery tank 25; control system includes computer 26 and controller 27.

[0031] Before spraying, degrease, sandblast, clean and preheat the workpiece 22, then use WC-Co powder as raw material, use plasma spra...

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Abstract

The invention discloses a laser-induced shock wave technology-based wear-resistant coating preparation method and device, and relates to the technical field of part remanufacturing. The method comprises the following steps: carrying out cleaning, deoiling, sand blasting and preheating on the surface of a workpiece to be sprayed, obtaining a thermal state hard material coating which satisfies the requirement in the aspect of thickness on the surface of the workpiece through a plasma spraying method; continuously and repeatedly embedding soft material particles in the formed thermal state hard material coating through laser-induced shock waves; after the material is solidified and cooled, uniformly distributing little soft material coating in the hard material coating. The device comprises a laser generator, a light guiding and splitting system, an electric arc solution preparation system, a workpiece clamp system and a control system. The coating prepared by the method is high in hardness, small in friction coefficient and low in wear rate and the device has the characteristics of being convenient to operate, low in cost and high in efficiency.

Description

[0001] Technical field: [0002] The invention relates to the technical field of parts remanufacturing, in particular to a laser-induced shock wave to promote the embedding of soft material particles with low hardness into the formed hard material coating, forming a large number of hard material coatings Method and apparatus for coating a small amount of soft material. [0003] Background technique: [0004] There is friction and wear on the mating surfaces of mechanical moving parts, and wear is one of the main forms of failure. According to statistics, the economic losses caused by wear and tear in my country are as high as trillions of dollars every year. Therefore, it is of great significance to remanufacture worn and failed parts. In order to restore the function of parts that have failed due to wear, a layer of wear-resistant material, that is, wear-resistant coating, is usually coated on the wear surface. The wear-resistant coating is put into use after mechanical fini...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/12C23C4/131C23C4/134C23C4/18
Inventor 张兴权章艳余晓流时礼平童宝宏周煜邬宗鹏陈刚
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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