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Self-propagating reactive spraying method for cermet rods

A cermet, self-propagating technology, applied in the direction of metal material coating process, coating, melting spray plating, etc., can solve the problems of easy oxidation, low grinding and granulation efficiency, long production cycle, etc., to improve melting temperature, improved melting energy, low cost effect

Inactive Publication Date: 2011-12-14
江阴东大新材料研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the spraying material used in the existing self-propagating reaction spraying technology is agglomerated powder. and prone to oxidation during granulation
The efficiency of grinding and granulation is low, and the preparation of spray materials limits the application and development of self-propagating reaction spray technology

Method used

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  • Self-propagating reactive spraying method for cermet rods
  • Self-propagating reactive spraying method for cermet rods
  • Self-propagating reactive spraying method for cermet rods

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Embodiment Construction

[0018] see Figure 1~2 , figure 1 It is a schematic diagram of the self-propagating cermet rod involved in the present invention. figure 2 It is a schematic diagram of the spraying equipment involved in the present invention. Depend on figure 1 with figure 2 It can be seen that the cermet rod self-propagating reaction spraying method of the present invention comprises the following process: use ceramic rod spray gun, air compressor and wire feed governor, oxygen, acetylene gas cylinder and pressure regulator thereof as spray coating The equipment uses self-propagating reaction to generate cermet rods in the spraying process, and the rods pressed by self-propagating powder are used as spraying materials. Propagation of exothermic reaction, the reaction product melts at high temperature, compressed air atomizes it into particles, and sprays it onto the surface of the roughened and preheated metal substrate to form a carbide cermet coating.

[0019] Typical spraying equipm...

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Abstract

The invention relates to a self-propagating reaction spraying method for cermet rods. The method includes the following process: the method comprises the following process: pressing self-propagating powder, which can generate metal through self-propagating reaction during the spraying process. The rod material of the ceramic rod is put into the ceramic rod spray gun, heated by the oxyacetylene flame to cause a self-propagating exothermic reaction, the reaction product is melted at high temperature, and the compressed air atomizes it into particles, which are sprayed onto the surface roughened and pretreated. A carbide cermet coating is formed on the surface of a hot metal substrate. By adopting the method of the invention, a carbide cermet coating with a higher melting point and more wear resistance can be prepared on the steel surface with a ceramic rod spraying gun.

Description

technical field [0001] The invention relates to a spraying method in which a ceramic rod spray gun is used as a spraying equipment, and a self-propagating reaction can occur in the spraying process to form cermets, and the rod material pressed from the self-propagating powder is used as a spraying material. It belongs to the field of thermal spraying. Background technique [0002] Ceramic rod spraying is to use ceramic rods as spraying materials, melt them in an oxyacetylene flame, atomize them into particles by compressed air, and spray them on the surface of the workpiece to form a ceramic coating. It is a new spraying method that has emerged in recent years. Its advantages are low price, stable quality and easy operation. The wear resistance of the workpiece after spraying is particularly good. Taking chromium oxide as an example, its wear resistance is equivalent to that of plasma spraying. The equipment is easy to operate and portable, especially suitable for on-site...

Claims

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Application Information

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IPC IPC(8): C23C4/10C23C4/129
Inventor 陈威朱磊谭佃龙张鸿海高一翔
Owner 江阴东大新材料研究院
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