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A high-temperature wear-resistant coating for casting and its preparation method

A high-temperature wear-resistant and coating technology, which is applied to casting molding equipment, coatings, molds, etc., can solve problems such as high thermal conductivity, reduced casting quality, and poor thermal conductivity

Active Publication Date: 2017-01-25
YANCHENG AOTONG TESCO FOUNDRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of the machinery industry, the requirements for casting coatings are getting higher and higher. However, the existing coatings have high thermal conductivity and poor thermal conductivity, which affects the service life of the model and reduces the quality of castings.

Method used

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  • A high-temperature wear-resistant coating for casting and its preparation method
  • A high-temperature wear-resistant coating for casting and its preparation method
  • A high-temperature wear-resistant coating for casting and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] This embodiment provides a high-temperature wear-resistant coating for casting, and the coating includes the following components in parts by mass:

[0022] Quartz: zircon powder: diatomaceous earth = 1:1.5:1 weight ratio mixture: 15 parts, water and isopropanol: 22 parts, polyvinyl acetate emulsion: 1 part, sodium carboxymethylcellulose: sodium base Bentonite=1.2:1.5 weight ratio mixture: 5 parts, 4 parts of additives; additives include fatty alcohol polyvinyl ether, organic silicon and sodium chlorophenate.

[0023] The preparation method of the above-mentioned high-temperature wear-resistant coating for casting specifically includes the following steps:

[0024] (1) Put sodium carboxymethyl cellulose, sodium bentonite, water and isopropanol in a disperser and stir for 20 minutes at a stirring speed of 250 rpm;

[0025] (2) When the mixture of sodium carboxymethylcellulose, sodium bentonite, water and isopropanol stirred in step (1) is visually in a slurry state, add...

Embodiment 2

[0027] This embodiment provides a high-temperature wear-resistant coating for casting, and the coating includes the following components in parts by mass:

[0028] Quartz: zircon powder: diatomaceous earth = 1:1.5:1 weight ratio mixture: 17 parts, water and isopropanol: 25 parts, polyvinyl alcohol: 3 parts, sodium carboxymethylcellulose: sodium bentonite =1.2:1.5 weight ratio mixture: 3 parts, auxiliary agent: 6 parts; auxiliary agent is sodium dodecylbenzenesulfonate, amide and sodium chlorophenate.

[0029] The preparation method of the above-mentioned high-temperature wear-resistant coating for casting specifically includes the following steps:

[0030] (1) Put sodium carboxymethyl cellulose, sodium bentonite, water and isopropanol in a disperser and stir for 25 minutes at a stirring speed of 250 rpm;

[0031] (2) When the mixture of sodium carboxymethylcellulose, sodium bentonite, water and isopropanol stirred in step (1) is visually in a slurry state, add quartz, zircon ...

Embodiment 3

[0033] This embodiment provides a high-temperature wear-resistant coating for casting, and the coating includes the following components in parts by mass:

[0034] Quartz: zircon powder: diatomaceous earth = 1:1.5:1 weight ratio mixture: 18 parts, water and isopropanol: 20 parts, water-soluble phenolic resin: 2 parts, sodium carboxymethyl cellulose: sodium base Bentonite=1.2:1.5 weight ratio mixture: 2 parts, auxiliary agent: 3 parts; the auxiliary agent is alkylbenzenesulfonic acid, polyether and sodium chlorophenate.

[0035] The preparation method of the above-mentioned high-temperature wear-resistant coating for casting specifically includes the following steps:

[0036] (1) Put sodium carboxymethyl cellulose, sodium bentonite, water and isopropanol in a disperser and stir for 22 minutes at a stirring speed of 250 rpm;

[0037] (2) When the mixture of sodium carboxymethylcellulose, sodium bentonite, water and isopropanol stirred in step (1) is visually in a slurry state, ...

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Abstract

The invention discloses a high-temperature wear-resisting coating for casting and a preparation method thereof. The coating comprises the following components: a fireproof material, a carrier, a bonding agent, a suspension agent and an auxiliary agent. The invention further designs the preparation method of the high-temperature wear-resisting coating for casting. The preparation method comprises the following steps: putting the suspension agent and the carrier into a dispersion machine and uniformly agitating; then adding the fireproof material and continually agitating; and slowly adding the bonding agent and the auxiliary agent in sequence under an agitating state; and agitating uniformly to obtain the high-temperature wear-resisting coating for casting. The high-temperature wear-resisting coating for casting is low in price, and is clean and is free from pollution; the preparation method is simple and the coating is high temperature resistant and wear resistant and is not easy to release; and a die for casting can be protected and the quality of a casting piece can be improved.

Description

technical field [0001] The invention relates to a coating and a preparation method thereof, in particular to a high-temperature wear-resistant coating for casting and a preparation method thereof, belonging to the technical field of casting. Background technique [0002] Foundry coating refers to a covering that is applied on the surface of the mold cavity or core to improve its surface refractoriness, chemical stability, metal erosion resistance, sand sticking resistance and other properties. Coating is the most effective measure to solve the sand sticking on the surface of castings and improve the surface quality of castings. The purpose of spraying paint on the casting model is to adjust the thermal specification of the system, prevent the cavity surface from direct contact with the molten metal, affect the structure and performance of the casting, facilitate machining, improve the surface quality and flatness of the casting, and make the molten metal It is easy to fill ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 吴卫明吴正平
Owner YANCHENG AOTONG TESCO FOUNDRY CO LTD
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