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Atmospheric supersonic plasma spraying device with two-stage protective air holes

A supersonic plasma and air hole protection technology, which is applied in coating, fusion spraying, metal material coating process, etc., can solve the problems of large size and high spraying cost, and achieve the possibility of reducing oxidation, simple structure, and lower temperature Effect

Active Publication Date: 2018-07-17
ACADEMY OF ARMORED FORCES ENG PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the existing supersonic plasma spraying device, such as high spraying cost, large size, and the ability to spray large-scale equipment outdoors, and provide an atmospheric supersonic plasma spraying device with two-stage protective air holes

Method used

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  • Atmospheric supersonic plasma spraying device with two-stage protective air holes

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0034] Such as figure 1 As shown, the present invention provides an atmospheric supersonic plasma spraying device with a two-stage protective gas hole, comprising a gun seat 1, a gun body pressure cap 2, a gun body 3, an insulator 4, a gas swirl ring 5, and a powder feeding frame 6. Nozzle pressure cap 7, anode nozzle 8, diversion structure 9, cathode head 10, rear insulator 11, water inlet 12, plasma gas inlet 13, water outlet 14, cathode body 15, whole gasket 16, rear insulation pressure cap 17. Cathode body pressure cap 18.

[0035] Such as figure 2 , image 3 , Figure 4 As shown, the anode nozzle 8 is in the shape of a body of revolution, its front end is cylindrical, and a central through hole 801 is provided at the central axis of the anode nozzle 8, and the anode...

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Abstract

The invention discloses an atmosphere supersonic speed plasma spraying device with two-section type protection air holes. The spraying device comprises an anode nozzle. The front end of the anode nozzle is cylindrical, and a center through hole is formed in the anode nozzle. The anode nozzle is further provided with the protection air holes and powder feeding holes. The inlet ends of the protection air holes are arranged on the circumferential face of the anode nozzle, and the outlet sections of the protection air holes are arranged on the front end face of the anode nozzle. The protection air holes comprise the first section of air holes and the second section of air holes. The axis of the first section of air holes and the axis of the center through hole form an acute angle of alpha, and the axis of the second section of air holes and the axis of the center through hole form an acute angle of beta. The inlet ends of the powder feeding holes are arranged on the circumferential face of the anode nozzle, and the outlet ends of the powder feeding holes communicate with the center through hole. In addition, the axis of the powder feeding holes is perpendicular to the axis of the center through hole. The atmosphere supersonic speed plasma spraying device is simple in structure, a solid cover is omitted, and additional arrangement of a cold water device is needless. Mounting, dismounting and inspection are convenient, the temperature of jet flow and the temperature of spraying particles can be lowered, and oxidization probability of the spraying particles is reduced.

Description

technical field [0001] The invention relates to the technical field of coating preparation, in particular to an atmospheric supersonic plasma spraying device with two-stage protective air holes. Background technique [0002] Because titanium has excellent corrosion resistance, mechanical properties and process properties, it is widely used in many sectors of the national economy, but the high price of titanium limits its wider and low-cost application. According to statistics, in 2013, the output of sponge titanium in my country was 80,000 tons, and the amount of titanium alloy corrosion resistance used in the amount of titanium materials reached more than 60%, including chemical industry, ocean, ship, salt industry, etc. The consumption of titanium materials is huge, how to reduce the consumption of titanium materials has always been a difficult problem in the industry. The preparation of Ti coating by thermal spraying is an effective way to reduce the consumption of titan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/134
Inventor 刘明张伟王海军姜祎王思捷于鹤龙
Owner ACADEMY OF ARMORED FORCES ENG PLA
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