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Coating for hub forming mold and preparation method thereof

A technology for forming molds and hubs, which is applied in casting and forming equipment, coatings, molds, etc., and can solve the problems of low coating strength, casting pores, blisters, and easy cracking of coatings.

Inactive Publication Date: 2016-10-12
WUHU HUANGYAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a wheel hub forming mold coating and its preparation method, which solves the problem that the traditional coating is highly volatile, which will cause defects such as pores and sand holes in the casting, and at the same time, the strength of the coating is low, and the formed coating is easy to crack. question

Method used

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Examples

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preparation example Construction

[0012] The invention provides a method for preparing a wheel hub forming mold coating, wherein the preparation method comprises: stirring and mixing sodium alginate, sodium carboxymethyl cellulose, aluminum phosphate, water glass, phenolic resin and water to form a mixed liquid M; put the mixed solution M for 2-4 hours, add refractory powder, and stir to obtain the mixed solution N; place the mixed solution N in a sealed environment for aging treatment to obtain the hub forming mold coating, wherein, compared to 100 parts by weight of water, the consumption of the sodium alginate is 5-15 parts by weight, the consumption of the sodium carboxymethylcellulose is 2-7 parts by weight, the consumption of the aluminum phosphate is 3-10 parts by weight, The dosage of the water glass is 4-12 parts by weight, the dosage of the phenolic resin is 10-20 parts by weight, and the dosage of the refractory powder is 1-5 parts by weight.

[0013] In order to make the prepared coating have lower...

Embodiment 1

[0020] Stir and mix 8g sodium alginate, 3g sodium carboxymethylcellulose, 5g aluminum phosphate, 6g water glass, 14g phenolic resin and 100g water to form a mixed solution M; put the mixed solution M for 2 hours and add 2g refractory powder Mixed liquid N was obtained after stirring; the mixed liquid N was placed in a sealed environment for aging treatment (time: 24 h), and wheel hub molding die coating A1 was obtained.

Embodiment 2

[0022] Stir and mix 12g sodium alginate, 5g sodium carboxymethylcellulose, 7g aluminum phosphate, 10g water glass, 16g phenolic resin and 100g water to form a mixed solution M; put the mixed solution M for 4 hours and then add refractory powder (the particle size is 8mm), and the mixture N is obtained after stirring; the mixture N is placed in a sealed environment for aging treatment (the time is 36h), and the hub forming mold coating A2 is obtained.

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Abstract

The invention discloses coating for a hub forming mold and a preparation method thereof. The preparation method of the coating comprises the steps that sodium alginate, sodium carboxymethyl cellulose, aluminum phosphate, soluble silicate, phenol formaldehyde resin and water are stirred and mixed, so that mixed liquor M is formed; after being subjected to still standing for 2-4 hours, the mixed liquor M is added with refractory powder and stirred, and then mixed liquor N is obtained; and the mixed liquor N is put in a sealed environment to be subjected to aging treatment, and the coating for the hub forming mold is obtained. The problems that the defects of pores, sand holes and the like of a casting occur due to the fact that the volatility of traditional coating is high, meanwhile, the strength of the traditional coating is low, and a formed coating layer is prone to being cracked are solved.

Description

technical field [0001] The invention relates to the field of paint preparation, in particular to a wheel hub molding die paint and a preparation method thereof. Background technique [0002] With the development of the times, the quality requirements for the quality of castings are increasing day by day. The traditional sand casting can no longer meet the production needs. The new special casting, with its advantages of high precision, good damage resistance and low cost, is more and more popular Widely used, the representative of which is metal mold casting, which is favored because of its high process performance, simple process flow, and high surface finish of castings. However, a major problem in metal mold casting is how to improve the life of its metal mold. Therefore, metal The development of heat-resistant coatings is of great significance. Traditional coatings have high volatility, which will cause defects such as pores and sand holes in the casting. At the same ti...

Claims

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Application Information

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IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 倪勤松王军
Owner WUHU HUANGYAN IND
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