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Light-colored self-peeling mold casting coatings and casting sand molds

A casting coating and light-colored technology, which is applied to casting molding equipment, coatings, casting molds, etc., can solve problems such as difficult to clean, easy to stick, difficult to sand, etc.

Active Publication Date: 2018-04-10
ZICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the first object of the present invention is to provide a light-colored self-stripping casting coating, which can effectively solve the problem of sticking when the light-colored self-stripping casting coating is applied to complex structures. phenomenon, not easy to sand, difficult to clean, the second purpose of the present invention is to provide a casting sand core using the above-mentioned light-colored self-stripping casting coating

Method used

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  • Light-colored self-peeling mold casting coatings and casting sand molds
  • Light-colored self-peeling mold casting coatings and casting sand molds
  • Light-colored self-peeling mold casting coatings and casting sand molds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Aggregate comprising 70% of cordierite powder, 10% of mullite powder, 20% of wollastonite powder, aluminum magnesium silicate accounting for 5% of aggregate weight, phenolic resin accounting for 2% of aggregate weight, accounting for 2% of aggregate weight % zinc oxide, 0.3% PVB by weight of aggregate, 0.1% surfactant by weight of aggregate, ball mill the three major aggregates to below 300 mesh, and add appropriate amount of ethanol to make light-colored self-stripping casting The Baume degree of the paint was 70, and a paint was obtained.

[0044] Apply the above-mentioned paint to the sand mold of the cylinder and cast it. The cylinder produced is as follows: figure 2 and image 3 shown. image 3 It is the topography of the cylinder produced by the light-colored self-stripping coating provided by the invention. Figure 4 for image 3 internal topography. Compare figure 1 , figure 2 and image 3 and Figure 4 , figure 1 It is the topography diagram of the ...

Embodiment 2

[0046] Aggregate will include cordierite powder 65%, mullite powder 15%, wollastonite powder 20%, aluminum magnesium silicate 5% by weight of aggregate, phenolic resin 3% by weight of aggregate, 3% by weight of aggregate % Zinc Oxide, 0.5% PVB by weight of the aggregate, 0.1% surfactant by weight of the aggregate, and ball mill the three major aggregates to below 300 mesh, add appropriate amount of ethanol to make the light-colored self-peeling type The Baume degree of the casting paint was 70, and the paint was obtained.

[0047] The above-mentioned paint is painted on the sand mold of the cylinder and cast, and the castings are produced without sticking phenomenon.

[0048] It can be seen from the above examples that when the light-colored self-stripping casting coating provided by the present invention is applied to castings with complex structures such as cylinder blocks, it has no adhesion to the castings and is easy to sand and clean up later.

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Abstract

The invention discloses a light-color self-stripping casting coating. The light-color self-stripping casting coating is prepared from a solvent, aggregate, magnesium aluminum silicate, phenolic resin, zinc oxide, a binder and surfactant. Magnesium aluminum silicate accounts for 3% to 5% by weight of the aggregate, phenolic resin accounts for 2% to 3% by weight of the aggregate, zinc oxide accounts for 2% to 3% by weight of the aggregate, the binder accounts for 0.3% to 0.5% by weight of the aggregate, and the surfactant accounts for 0.05% to 0.15% by weight of the aggregate. The aggregate is prepared from, by weight, 65% to 75% of cordierite powder, 10% to 15% of mullite powder and 15% to 20% of wollastonite in powder. The baume degree of the light-color self-stripping casting coating ranges from 65 to 75. Due to the fact that the color of the light-color self-stripping casting coating is different from that of a sand mold body, the light-color self-stripping casting coating is easily recognized, painting by a worker is convenient, and neglected painting is avoided. After being heated, the coating crusts and peels off, no powder is generated, and therefore the working environment is greatly improved. When the coating is used for cylinder blocks and other castings with complex inner cavity structures, the coating does not adhere to the castings and is easy to remove. The invention further provides a casting sand mold adopting the light-color self-stripping casting coating.

Description

technical field [0001] The invention relates to the technical field of coatings, more specifically, to a light-colored self-stripping casting coating, and also to a casting sand mold using the above-mentioned light-colored self-stripping casting coating. Background technique [0002] Foundry coatings are the basic coatings for gravity-type metal casting and are suitable for all metal molds. At present, most domestic cast iron manufacturers use graphite coatings, and some manufacturers also use light-colored coatings. Although graphite coating has high refractoriness and is easy to brush, it pollutes the environment seriously and can easily cause serious harm to the health of workers. As our country pays more and more attention to environmental protection, workers have higher and higher requirements on the working environment, and the harsh casting production environment is no longer suitable for the development requirements of today's society. The new light-color self-stri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 李兆军王鹏杨承雁桑伟韩小伟贾志明曹澍董帅袁磊张英沙保民
Owner ZICHAI POWER CO LTD
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