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High temperature anti-oxidation coating material for cast heat treatment, and preparation method thereof

An anti-oxidation coating and high-temperature technology, which is applied in the field of casting heat treatment, can solve the problems of reducing the degree of oxidation on the surface of castings and the effect is not very satisfactory, and achieves the effects of good anti-oxidation effect, improved service life, and improved surface quality

Inactive Publication Date: 2015-09-30
宁国市开源电力耐磨材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this process has a certain effect, the oxidation degree of the casting surface has been reduced to a certain extent, especially when the temperature is not higher than 1000 ° C, it has a good effect, but when the temperature is higher than 1000 ° C, the effect is not very ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A high-temperature anti-oxidation coating for casting heat treatment, which is composed of the following raw materials in parts by weight: 10 parts of glass powder, 90 parts of high alumina bauxite, 10 parts of phenolic resin, 12 parts of water glass, 1 part of sodium bentonite, and 10 parts of water. The particle size of the glass powder is 270 mesh, and the particle size of the high alumina alumina is 270 mesh.

[0021] The preparation method of the high-temperature anti-oxidation coating for casting heat treatment comprises the following steps:

[0022] (1) Take the raw materials according to the above weight ratio;

[0023] (2) glass powder and high alumina bauxite are mixed and stirred evenly;

[0024] (3) Add phenolic resin, water glass and sodium bentonite to the mixture of step (2), stir evenly;

[0025] (4) Finally add water and stir evenly.

Embodiment 2

[0027] A high-temperature anti-oxidation coating for casting heat treatment, which is composed of the following raw materials in parts by weight: 20 parts of glass powder, 80 parts of high alumina bauxite, 15 parts of phenolic resin, 10 parts of water glass, 2 parts of sodium bentonite, 15 parts of water, The particle size of the glass powder is 300 mesh, and the particle size of the high alumina alumina is 300 mesh.

[0028] The preparation method of the high-temperature anti-oxidation coating for casting heat treatment comprises the following steps:

[0029] (1) Take the raw materials according to the above weight ratio;

[0030] (2) glass powder and high alumina bauxite are mixed and stirred evenly;

[0031] (3) Add phenolic resin, water glass and sodium bentonite to the mixture of step (2), stir evenly;

[0032] (4) Finally add water and stir evenly.

Embodiment 3

[0034] A high-temperature anti-oxidation coating for casting heat treatment is composed of the following raw materials in parts by weight: 30 parts of glass powder, 70 parts of high alumina bauxite, 18 parts of phenolic resin, 8 parts of water glass, 3 parts of sodium bentonite and 20 parts of water. The particle size of the glass powder is 320 mesh, and the particle size of the high alumina alumina is 320 mesh.

[0035] The preparation method of the high-temperature anti-oxidation coating for casting heat treatment comprises the following steps:

[0036] (1) Take the raw materials according to the above weight ratio;

[0037] (2) glass powder and high alumina bauxite are mixed and stirred evenly;

[0038] (3) Add phenolic resin, water glass and sodium bentonite to the mixture of step (2), stir evenly;

[0039] (4) Finally add water and stir evenly.

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Abstract

The present invention discloses a high temperature anti-oxidation coating material for cast heat treatment, and a preparation method thereof, wherein the raw materials comprise, by weight, 10-30 parts of glass powder, 70-90 parts of high bauxite, 10-18 parts of a phenol formaldehyde resin, 8-12 parts of water glass, 1-3 parts of sodium-based bentonite, and 10-20 parts of water. The preparation method comprises: (1) weighing the raw materials according to the weight part ratio; (2) mixing the glass powder and the high bauxite, and uniformly stirring; (3) adding the phenol formaldehyde resin, the water glass and the sodium-based bentonite to the mixture obtained in the step (2), and uniformly stirring; and (4) finally adding the water, and uniformly stirring. According to the present invention, with the high temperature anti-oxidation coating material, the cast can not be oxidized in the heat treatment high temperature atmosphere, the cast surface quality can be improved, the cast service life can be prolonged, the compactness of the coating material is good, the anti-oxidation effect is good, and all components are non-corrosive.

Description

technical field [0001] The invention relates to the technical field of casting heat treatment, in particular to a high-temperature anti-oxidation coating for casting heat treatment and a preparation method thereof. Background technique [0002] When many wear-resistant castings are heat treated at high temperature, due to the influence of high temperature, severe oxidation often occurs on the surface of the casting, forming a thicker oxide layer, and even leading to severe decarburization on the surface of the casting, which will seriously deteriorate the surface quality and service life of the casting. At the same time, the oxide layer formed on the surface of the casting will all fall into the quenching liquid medium or the isothermal quenching liquid medium in the form of oxide skin after quenching treatment or isothermal quenching treatment. One is to seriously pollute the quality of the liquid medium, and the other is to seriously damage the It deteriorates the physical...

Claims

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Application Information

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IPC IPC(8): C21D1/68
Inventor 汪德发徐超汤新明翟健赵文定汪礼忠
Owner 宁国市开源电力耐磨材料有限公司