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Graphite-powder casting coating

A casting coating and graphite powder technology, which is applied to casting molding equipment, coatings, casting molds, etc., can solve the problems of inability to form coatings and low suspension, achieve good heat insulation effect, improve adhesion, and chemical stability Good results

Inactive Publication Date: 2015-07-29
WUHU RONGCHUAN ELECTROMECHANICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, resin coating is commonly used, because it is a suspending liquid and has low suspending property, so it can be painted evenly by stirring continuously during use, otherwise a dense coating cannot be formed.

Method used

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Examples

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Embodiment Construction

[0008] The present invention will be further described below in conjunction with embodiment.

[0009] The graphite powder casting coating is made of the following raw materials in parts by weight: 44 parts of graphite powder, 8-12 parts of diatomaceous earth, 9-11 parts of sodium lauryl sulfate, 1-4 parts of titanium dioxide, and 6-10 parts of binder. 8 parts, 5-10 parts of acrylic resin, 8-10 parts of stearamide and 16-20 parts of ethanol, wherein graphite powder and titanium dioxide pass through a 220 mesh sieve; the content of silicon dioxide in diatomite is greater than 92%, and the content of iron oxide The content is 1.2-1.5%; the binder is one or two kinds of epoxy resin and phenolic resin; the above range is suitable for castings with a higher tonnage.

[0010] Graphite powder casting paint is made from the following raw materials in parts by weight: 44 parts of graphite powder, 8 parts of diatomaceous earth, 9 parts of sodium lauryl sulfate, 2 parts of titanium dioxid...

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Abstract

The invention discloses a graphite-powder casting coating, which is prepared from the following raw materials in parts by weight: 44 parts of graphite powder, 8 to 12 parts of diatomite, 9 to 11 parts of lauryl sodium sulfates, 1 to 4 parts of titanium dioxide, 6 to 8 parts of bonding agents, 5 to 10 parts of acrylic resin, 8 to 10 parts of stearic amides and 16 to 20 parts of ethyl alcohol, wherein the graphite powder and the titanium dioxide are enabled to pass through a 220-mesh screen. According to the graphite-powder casting coating, the graphite powder is mainly used as the main raw material; various additive materials are reasonably formulated by quantifying the graphite powder; the heat insulation effect is good; the diatomite, the lauryl sodium sulfates, the titanium dioxide, the biding agents, the acrylic resin and the stearic amides are added; various components interact; the adhesive force of the coating is improved; further, the coating is good in chemical stability; the occurrence rate of scour troughs in a production process is decreased; the sand fusion phenomenon of a cast part is avoided.

Description

technical field [0001] The invention relates to a graphite powder casting coating, which belongs to the technical field of foundry industry. Background technique [0002] In the foundry industry, the coating for sand casting is very important. Its function is to shield the interaction between the sand mold and the metal liquid, and form a dense refractory coating at the casting temperature to prevent the metal liquid from penetrating into the sand mold. At the same time, due to the sand mold The material decomposes at high temperature to produce gas, and the coating can prevent the heavy metal from entering the liquid and affect the surface finish of the casting. At present, resin coating is commonly used, because it is a suspension liquid, and the suspension is low, and it can be painted evenly by stirring continuously during use, otherwise a dense coating cannot be formed. Most casting coatings are formulated according to different casting conditions. For larger ...

Claims

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Application Information

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IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 吴景泉殷涛艾家贵
Owner WUHU RONGCHUAN ELECTROMECHANICAL TECH
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