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Cleaning method for hot spraying components and device thereof

A technology of parts and thermal spraying, which is applied in the field of cleaning, can solve the problems of shortened service life of metal parts, achieve the effects of reducing residual stress, reliable performance and improving service life

Inactive Publication Date: 2008-09-10
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the service life of metal parts is greatly shortened

Method used

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  • Cleaning method for hot spraying components and device thereof
  • Cleaning method for hot spraying components and device thereof

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] see figure 1 , the powder spraying box 1 is provided with two rubber gloves 3 and a window 2, the bottom of the powder spraying box 1 is provided with a fine powder replacement valve 4, the powder spraying box 1 is provided with a powder spraying gun 12, and the powder spraying gun 12 passes through the pressure regulating valve 10. The pressure gauge 11 and the compressed air filter 9 are connected to a high-pressure air source, and also connected to a powder suction pipe 13 connected to the powder container. The upper part of the powder spraying box 1 is connected to the cyclone separator 7, and the bottom of the cyclone separator 7 is provided Coarse sand / soil collection valve 8, the outlet of cyclone separator 7 are connected with powder spraying box 1 through regulating switch 6 and exhaust fan 5.

[0020] When cleaning the coating...

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Abstract

The invention discloses a method for cleaning a hot spray part. The method is as follows: firstly, a cladding belt of the hot spray part is removed; the corners of the hot spray part are cleaned by a small rasper and / or a razor-blade; a protruding coating and sticky matters are scraped off, then the hot spray part is placed in a cleaning box; a powder gun faces a coating surface of the hot spray part; ceramic powders with granularity less than 75 micron is continuously ejected under compressed air under 2 to 5 atmosphere pressure; the powder gun comes and goes for a plurality of times at the peripheral corners of the coating to clean the sticky matters on the periphery and the back of the hot spray part; finally, powder dust on the hot spray part is blown down by the compressed air. The invention is a hot spray part cleaning method which can clean the hot spray part, relieve the stress in the coating corners and can not produce uncovering and destroying effects on the coating; a device for realizing the hot spray part cleaning method is simple in structure, convenient to manufacture and reliable in performance.

Description

technical field [0001] The invention relates to a cleaning method, in particular to a cleaning method for thermal spraying components. The invention also relates to a device for implementing the method for cleaning thermally sprayed parts. Background technique [0002] Corrosion, wear and fatigue fracture are the three main ways metal components fail. When metal parts are used in harsh environments such as high temperature, acid and alkali, the oxidation and corrosion rate of the metal is very fast; under high load and high-speed motion, the metal wears violently. As a result, the service life of metal parts is greatly shortened. In order to reduce the oxidation, corrosion and wear rate of metal parts, thermal spraying methods such as plasma spraying, arc spraying, and high-speed oxyacetylene flame spraying can be used to prepare 100-500 micron thick corrosion-resistant coatings on the surface of metal parts , Wear-resistant coating. In order to increase the service temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/02
Inventor 蒋显亮
Owner CENT SOUTH UNIV
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