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Plasma spraying gun

A spraying gun and plasma technology, applied in the field of spraying guns and ion spraying guns, can solve the problems of not being able to have both internal powder feeding and external powder feeding at the same time, not being able to realize subsonic and supersonic speeds at the same time, and limiting the industrial application range of spraying guns, etc. , to achieve the effect of expanding the spraying range, ensuring the uniformity of heat dissipation and cooling, and reducing the spraying power

Inactive Publication Date: 2003-03-26
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The anode and cathode structure of the gun body of the invention is complex, resulting in poor alignment, cooling and heat dissipation, and a short service life of the spray gun. The spray gun belongs to a supersonic spray gun, and adopts an external powder delivery method, and has fewer functions, that is, it cannot achieve subsonic speed at the same time. The two functions of supersonic speed and supersonic speed cannot be combined with internal powder feeding and external powder feeding at the same time, thus limiting the industrial application range of spray guns

Method used

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Embodiment Construction

[0012] Such as figure 1 As shown, the present invention mainly includes: gun body 1, insulator 2, gas swirl ring 3, flow divider 4, nozzle 5, front pressure cap 6, cathode body 7, internal pressure cap 8, insulating sleeve 9, external pressure cap 10 , the connection method is: the anode nozzle 5 is connected to the gun body 1 through the internal pressure cap 6, the flow divider 4 is fixed inside the gun body 1 through tight fit, the gas swirl ring 3 and the insulator 2 are connected to the gun body through the internal pressure cap 8 The cathode body 7 is fixed inside the gun body 1 through the insulating sleeve 9, the external pressure cap 10 and the insulator 2.

[0013] The rear part of the gun body 1 is provided with a powder feeding gas inlet 11, a water inlet cable interface 12 and an ion gas inlet 13, and the rear part of the cathode body is provided with a water outlet cable interface 14.

[0014] The gun body 1 and the anode nozzle 5 belong to the same anode, the c...

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Abstract

The plasma spraying gun mainly comprises gun body, insulator, gas spiral-flow ring, flow divider, anode nozzle, front pressure cap, cathode body, inner pressure cap, insulating cover and outer pressure cap, in which the anode nozzle is connected with gun body by means of inner pressure cap, the flow divider is fixed in the interior of gun body by means of tight fit, the gas sprial-flow ring and insulator are connected with gun body by means of inner pressure cap,and the cathode body is fixed in the interior of gun body by means of insualting cover, outer pressure cap and in sulator. Said invention adopts integrated structure design, its structure is compact and beautiful.

Description

technical field [0001] The invention relates to a spray gun, in particular to a plasma spray gun, which belongs to the field of welding technology. Background technique [0002] The use of plasma spraying technology to prepare various metal and ceramic coatings on the surface of workpieces is a process that has been widely used. The gun body of existing spray gun all is made up of multiple components, or is divided into inner gun body, outer gun body, or is divided into front gun body, rear gun body, and is made up of insulator. After literature search, it is found that the applicant is: No. 701 Research Institute of China Aerospace Science and Technology Corporation, inventors: Zhang Jiaxiang, Chen Guangrong, Dong Yonghui, the application number is: 99244774.7, the name is: supersonic arc plasma spray gun for thermal spraying, which involves this kind of Equipment and process, its structure is: the front electrode is a tube with equal section, the rear electrode is a solid...

Claims

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Application Information

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IPC IPC(8): B05B5/06B05B7/14B05B7/22B23K9/04H05H1/24
Inventor 翟长生孙宝德巫瑞智
Owner SHANGHAI JIAO TONG UNIV
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