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A kind of high temperature resistant coating and preparation method thereof

A high-temperature-resistant coating and coating technology, which is applied in coatings, manufacturing tools, casting molding equipment, etc., can solve the problems of increasing labor intensity of workers, increasing material consumption, poor performance of high-temperature-resistant coatings, etc., and achieve excellent physical and chemical properties and durability. Thermal performance, cycle test and adhesion advantages, high temperature resistance effect

Active Publication Date: 2019-06-18
河北新兴铸管有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the production process of centrifugal ductile graphite pipe, the following defects were found after a lot of engineering practice by workers: 1. The sprayed coating in the chute has poor high temperature resistance, which makes the tools exposed to high temperature molten iron melt quickly, reducing the service life of tools
For example: the slag picking rakes and slag picking rakes of the pouring table need to be replaced every three hours when they are in use; 2. The performance of preventing tools from sticking to iron is poor and difficult to clean
For example: the chute has too much sticky iron, which is inconvenient to clean up in time, causing defects such as round holes on the cast pipe workpiece to be carried out in the next procedure; The damage to the chute increases the consumption of materials; 4. The rake will stick to iron during construction, which increases the weight of the rake and increases the labor intensity of the workers. The problem of poor performance of high-temperature resistant coatings is difficult to solve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of high temperature resistant coating, its raw material is composed of: 500 parts of diatomite, 30 parts of bentonite, 10 parts of aluminum phosphate, 4 parts of polyaluminium chloride, 50 parts of solvent, 5 parts of auxiliary material by weight; Mix made.

[0019] Preferably, the auxiliary material comprises the following components in parts by weight: 1 part of dispersant, 1 part of defoamer, 1 part of thickener, 1 part of wetting agent, and 1 part of anti-mold and preservative.

[0020] Preferably, the diatomite is 600 mesh diatomite, and the bentonite is sodium bentonite.

[0021] As preferably, the dispersant is polyphosphate or polyacrylic acid sodium salt, the defoamer is alkali-resistant mineral oil defoamer, the thickener is hydroxyethyl cellulose, xanthan gum, the The wetting agent is a non-ionic wetting agent, and the anti-mildew preservative is an environment-friendly anti-mold preservative.

[0022] The concrete preparation steps of described coat...

Embodiment 2

[0028] A kind of high-temperature-resistant coating, its raw material composition by weight: 1500 parts of diatomite, 40 parts of bentonite, 20 parts of aluminum phosphate, 12 parts of polyaluminum chloride, 100 parts of solvent, 15 parts of auxiliary material; Mix made.

[0029] Preferably, the auxiliary material comprises the following components in parts by weight: 3 parts of dispersant, 3 parts of defoamer, 3 parts of thickener, 3 parts of wetting agent, and 3 parts of anti-mold and preservative.

[0030] Preferably, the diatomite is 600 mesh diatomite, and the bentonite is sodium bentonite.

[0031] As preferably, the dispersant is polyphosphate or polyacrylic acid sodium salt, the defoamer is alkali-resistant mineral oil defoamer, the thickener is hydroxyethyl cellulose, xanthan gum, the The wetting agent is a non-ionic wetting agent, and the anti-mildew preservative is an environment-friendly anti-mold preservative.

[0032] The concrete preparation steps of described...

Embodiment 3

[0038] A kind of high temperature resistant coating, its raw material is composed of: 800 parts of diatomite, 32 parts of bentonite, 13 parts of aluminum phosphate, 6 parts of polyaluminum chloride, 60 parts of solvent, 8 parts of auxiliary material in parts by weight; Mix made.

[0039] Preferably, the auxiliary material comprises the following components in parts by weight: 2 parts of dispersant, 2 parts of defoamer, 2 parts of thickener, 1 part of wetting agent, and 1 part of anti-mold and preservative.

[0040] Preferably, the diatomite is 600 mesh diatomite, and the bentonite is sodium bentonite.

[0041] As preferably, the dispersant is polyphosphate or polyacrylic acid sodium salt, the defoamer is alkali-resistant mineral oil defoamer, the thickener is hydroxyethyl cellulose, xanthan gum, the The wetting agent is a non-ionic wetting agent, and the anti-mildew preservative is an environment-friendly anti-mold preservative.

[0042] The concrete preparation steps of des...

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Abstract

The invention discloses high-temperature-resistant paint and a preparation method thereof and relates to the technical field of paint preparation. The high-temperature-resistant paint is developed mainly specific to chute spraying in the centrifugal casting process. The paint comprises, by weight, 500-1500 parts of 600-mesh kieselguhr, 30-40 parts of sodium bentonite, 10-20 parts of aluminum phosphate, 4-12 parts of aluminum polychlorid, 50-100 parts of solvent and 5-15 parts of ingredients. The high-temperature-resistant paint can resist temperature as high as 1400 DEG C in the centrifugal casting process, the thermal change resistance cyclic test and the adhesion test meet the requirements for technical indexes, the service life of tools and equipment is prolonged, air pores and cracks in a chute are avoided, the use efficiency of the chute is improved, consumption of the chute is reduced, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of coatings for casting technology, and in particular relates to a high-temperature resistant coating and a preparation method thereof. Background technique [0002] In the production process of centrifugal ductile graphite pipe, the following defects were found after a lot of engineering practice by workers: 1. The sprayed coating in the chute has poor high temperature resistance, which makes the tools exposed to high temperature molten iron melt quickly, reducing the service life of tools . For example: the slag picking rakes and slag picking rakes of the pouring table need to be replaced every three hours during use; 2. The performance of preventing tools from sticking to iron is poor and difficult to clean. For example: the chute has too much sticky iron, which is inconvenient to clean up in time, causing defects such as round holes on the cast pipe workpiece to be carried out in the next procedure; Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 姚治瑞
Owner 河北新兴铸管有限公司