Army Academy of Armored Forces

Weiling Guo

Ming Liu

Haidou Wang

Zhiguo Xing

Guozheng Ma

Lihong Dong

Xinyuan Zhou

Yanfei Huang

Yuelan Di

Qiqing Peng

Dongyu He

A small-size axial powder feeding inner hole plasma spraying gun comprises a nozzle with one end fixed on one side of a front gun body through a nozzle gland and the other end extending to the other side of the front gun body; an insulator arranged between the front gun body and a rear gun body; a powder feeding frame fixedly connected to the rear gun body internally provided with a powder inlet channel, a cathode seat of a cathode being connected to the powder feeding joint, a cathode head extending into a spray hole channel of the nozzle, and an annular cavity being formed between the cathode head and an inner wall of the spray hole channel; an air inlet channel arranged on the front gun body and communicated with the annular cavity; and a cooling channel with an interior introduced with cooling water.

Small-size axial powder feeding inner hole plasma spraying gun

The disclosure discloses a preparation method of a composite coating for a resin matrix composite, comprising the following steps: preparing ceramic-resin composite powders which comprise AlOceramic, a thermosetting resin and a curing agent and are semi-thermosetting resin powders; and respectively spraying pure AlOceramic powders and the composite powders on the surface of the resin matrix composite by supersonic atmospheric plasma spraying to form a ceramic-resin composite coating, wherein the pure AlOceramic powders are fed into jet flow in a manner of feeding powder inside a spray gun, and the composite powders are fed into jet flow in a manner of feeding powder outside the spray gun. Correspondingly, the disclosure also provides a preparation device of a composite coating for a resin matrix composite.

Preparation method and device of composite coating for resin matrix composite

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Beijing, China

Weiling Guo