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Coating for producing hard alloy

A cemented carbide and coating technology, which is applied in base materials, lubricating compositions, petroleum industry, etc., can solve problems such as difficulty in uniform dispersion, boat bonding, product quality problems, etc., and achieves simple preparation process, easy dispersion and uniformity, Excellent anti-stick effect

Inactive Publication Date: 2005-03-23
袁美和
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, the anti-adhesive coating used in production is made of graphite powder, Tween, Buna rubber, distilled water, etc., but it is common that the adhesion of the coating to the graphite boat is not strong, and it is not easy to disperse evenly when brushing. During the vacuum sintering process, the anti-adhesive properties of cemented carbide products are not good enough, and the product is easy to bond with the boat, resulting in serious carburization or partial carburization of the product, serious product quality problems, and damage to the boat and other defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: graphite powder 30%, Tween 6%, polyvinyl alcohol 0.6%, formaldehyde 0.3%, aluminum oxide powder 3%, water-soluble glue 0.6%, distilled water 59.5%.

Embodiment 2

[0015] Embodiment 2: graphite powder 30%, Tween 8%, polyvinyl alcohol 0.5%, formaldehyde 0.3%, aluminum oxide powder 3%, water-soluble glue 0.5%, distilled water 5-7.7%.

Embodiment 3

[0016] Embodiment 3: graphite powder 2 5%, Tween 5%, polyvinyl alcohol 0.8%, formaldehyde 0.08%, aluminum oxide powder 3%, water-soluble glue 0.3%, distilled water 65.82%.

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PUM

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Abstract

The invention relates to a coating combination, especially a coating used for producing hard alloy, adopting the following components in the proportion: graphite powder 20-40%, tween 4-8%, polyvinyl alcohol 0.2-1.0%, formaldehyde 0.05-0.5%, alumina powder 1-5%, water-soluble glue 0.1-1.0%, and distilled water 50-70%; it has the characters of strong adhesion, being easy to uniformly disperse as being coated, excellent anti-adhesive property to hard alloy product in the vacuum-sintering process, and its preparing process is simple, its cost is low, and it can strengthen the quality stability of the hard alloy products, beneficial to large-scale industrialized production of hard alloys, and its economic benefits are good.

Description

technical field [0001] The invention relates to a coating composition, especially a coating used in the production of cemented carbide. Background technique [0002] As we all know, the boat used in the vacuum sintering process in the cemented carbide production process needs a coating to prevent the product from sticking to the boat. With the rapid development of the cemented carbide industry, the vacuum sintering process has gradually been widely used. The amount of paint is also increasing, and the varieties are becoming more and more diverse. Generally speaking, the anti-adhesive coating used in production is made of graphite powder, Tween, Buna rubber, distilled water, etc., but it is common that the adhesion of the coating to the graphite boat is not strong, and it is not easy to disperse evenly when brushing. During the vacuum sintering process, the anti-adhesive properties of cemented carbide products are not good enough, and the products are easily bonded to the bo...

Claims

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Application Information

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IPC IPC(8): C10M103/02
Inventor 袁美和
Owner 袁美和
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