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A method of supersonic flame spraying suitable for slender parts

A technology of supersonic flame and parts, which is applied in the direction of coating, fusion spraying, metal material coating process, etc. It can solve the problems of easy seams of sprayed coatings and poor bonding force of sprayed coatings, so as to reduce internal stress and increase High binding force, avoid seam effect

Active Publication Date: 2019-05-17
WUHAN MARINE MACHINERY PLANT
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  • Claims
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Problems solved by technology

[0004] In order to solve the problem that the bonding force between the sprayed layers formed by two sprays is poor, and seams are easily generated between the sprayed layers formed by two sprays, the embodiment of the present invention provides a supersonic speed machine suitable for slender parts. flame spraying method

Method used

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  • A method of supersonic flame spraying suitable for slender parts
  • A method of supersonic flame spraying suitable for slender parts
  • A method of supersonic flame spraying suitable for slender parts

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0037] figure 1 It is a flow chart of a supersonic flame spraying method suitable for elongated parts provided by the embodiment of the present invention, such as figure 1 As shown, the spraying method includes:

[0038] S11: Perform surface pretreatment on the surface to be sprayed of the part to be sprayed.

[0039] Wherein, the surface to be painted includes a first surface to be painted and a second surface to be painted, and the first surface to be painted and the second surface to be painted are adjacent in the length direction of the part to be painted.

[0040] figure 2 It is a top view of a part to be sprayed provided by the embodiment of the present invention, such as figure 2 As shown, the surface to be painted include...

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Abstract

The invention discloses a supersonic flame spraying method suitable for a slender part and belongs to the technical field of thermal spraying. The spraying method comprises the steps of carrying out surface pretreatment on surfaces to be sprayed; spraying a first surface to be sprayed for the first time so as to form a first spraying layer; grinding the first spraying layer so as to grind one end, close to a second surface to be sprayed, of the first spraying layer into an inclined surface; carrying out surface pretreatment on the second surface to be sprayed, the inclined surface and a butting surface; spraying the second surface to be sprayed, the inclined surface and the butting surface so as to form a second spraying layer; and grinding the first spraying layer and the second spraying layer so as to form a layer of a spraying material with the uniform thickness on the surface of the part to be sprayed. According to the the spraying method, because the first spraying layer and the second spraying layer are connected through the inclined surface, the spraying material can be directly sprayed on the inclined surface in the spraying process for the second time, and therefore the combining force between the first spraying layer and the second spraying layer can be increased, and a seam between the first spraying layer and the second spraying layer can be avoided.

Description

technical field [0001] The invention relates to the technical field of thermal spraying, in particular to a supersonic flame spraying method suitable for elongated parts. Background technique [0002] Supersonic flame spraying is a new surface protection and surface strengthening process for parts, which can effectively improve the chemical stability, hardness and melting point of parts, and reduce the coefficient of friction, thereby prolonging the service life of parts. [0003] For some slender parts, because the length is too long, the spraying equipment cannot complete the spraying of the whole part at one time. The edge of the sprayed layer formed by the first spray is sprayed with another section. However, when spraying with the existing segmental spraying method, the bonding force between the sprayed coatings formed by two sprayings is relatively poor, and seams are likely to occur, thereby reducing the protective effect of the sprayed coatings on parts. Contents ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/129
Inventor 张春晖胡佳阳顾宝军马建成杨慧芹刘刚
Owner WUHAN MARINE MACHINERY PLANT
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