Cobalt-based spray powder used for aero-engine abrasion-resistant parts and preparation method thereof

An aero-engine and powder-spraying technology, applied in the field of wear-resistant coating materials, can solve the problems of poor grinding and polishing performance, weak adhesion of ultra-fine powder coatings, prone to cracks and delamination, and achieve excellent resistance to Abrasive wear, good coating grinding and polishing performance, surface smoothing effect
CN106975742AInactive Publication Date: 2017-07-25TIANJIN CHENGLI AVIATION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN CHENGLI AVIATION TECH CO LTD
Publication Date
2017-07-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of wear-resistant coating materials, and in particular relates to a cobalt-based spraying powder for aero-engine wear-resistant parts, and also relates to a method for preparing the above-mentioned spraying powder. The composition and weight percentage of the spray powder are: chromium: 20%~30%; nickel: 7%~15%; tungsten: 5%~12%; carbon: 0.1%~1%; cobalt: 45%~65% %; the particle size range of the above spray powder is 5 μm to 45 μm; the coating obtained by using the spray powder is suitable for working at high temperature, and has excellent anti-abrasive wear, hard surface wear, fretting wear and particle erosion wear performance ;After spraying, the bonding strength is high, and it is not easy to fall off; after spraying, the coating has a uniform texture, smooth surface, no delamination and cracks; at the same time, the cobalt content in the material determines that the coating is an excellent anti-oxidation coating; in addition , the powder coating also has good coating grinding and polishing properties and high coating hardness, and can be widely used in the application of engine parts.
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Description

technical field

[0001] The invention belongs to the technical field of wear-resistant coating materials, and in particular relates to a cobalt-based spraying powder for aero-engine wear-resistant parts, and also relates to a method for preparing the above-mentioned spraying powder. Background technique

[0002] Due to high temperature, corrosion, friction and wear on the surface of some parts of the aero-engine turbine and the combustion chamber, the mechanical parts will be worn out and the service life of the parts will be shortened. Therefore, it is necessary to improve the wear resistance, oxidation resistance and corrosion resistance of aero-engine parts to adapt to their long-term work in harsh environments such as high temperature and high load, to solve the problems of wear and corrosion of metal parts, and to extend the life of metal parts. service life.

[0003] In the 1960s and 1970s in my country, a simple process of using a welding torch as a tool to coat molte...

Claims

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