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Flake graphite alcohol-based casting paint and manufacturing method thereof

A flake graphite and foundry coating technology, which is applied in foundry molding equipment, coatings, molds, etc., can solve the problems of low metal erosion resistance, poor high temperature resistance, poor chemical stability, etc., and achieve good gas storage and exhaust. capacity, lower production costs, and the effect of excellent suspension performance

Inactive Publication Date: 2015-03-11
WUHU HONGKUN AUTO PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, alcohol-based casting coatings in the prior art have many defects, such as poor suspension stability, easy delamination during long-distance transportation and storage, poor high temperature resistance, low hardness, poor chemical stability, and low metal erosion resistance. , weak sand resistance, etc., make alcohol-based casting coatings have a single function and cannot meet large-scale industrial production

Method used

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Examples

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Embodiment Construction

[0014] The described a kind of flake graphite alcohol-based casting coating is characterized in that it is made of the following raw materials in parts by weight: flake graphite 68, glutamic acid 0.7, clay 2, hydroxymethylcellulose sodium 1.2, dodecyl tris Methyl ammonium chloride 2.2, methyl methacrylate 5, rice husk charcoal 9, grapevine 18, lithium-based bentonite 2, rosin 3, ethanol 156, additive 3.

[0015] The auxiliary agent is made of the following raw materials in parts by weight: shrimp shell 11, pearl mica 78, hydrotalcite 57, sodium tripolyphosphate 0.14, organic bentonite 1, thymol 0.2, dimethyl silicone oil 2, propylene glycol methyl ether acetic acid Ester 0.3, nano silicon dioxide 1.1, iron oxide powder 3, polyethylene oxide 2.3, brown sugar 1.5, appropriate amount of water, the preparation method is: put shrimp shells, pearl mica, and hydrotalcite in a calciner at 540-670°C Calcinate for 2-3 hours, take it out, soak it in 8-12% hydrochloric acid solution for 4...

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Abstract

The invention discloses a flake graphite alcohol-based casting paint and a manufacturing method thereof. The paint is characterized by being composed of the following raw materials in parts by weight: 68 to 82 parts of flake graphite, 0.7 to 1.4 parts of glutamic acid, 2 to 3 parts of clay, 1.2 to 3.1 parts of sodium hydroxymethyl cellulose, 2.2 to 3.5 parts of dodecyl trimethyl ammonium chloride, 3 to 5 parts of methyl methacrylate, 9 to 13 parts of rick husk carbon, 18 to 25 parts of grapevine, 2 to 4 parts of lithium-based bentonite, 3 to 5 parts of rosin, 53 to 69 parts of ethanol, and 3 to 6 parts of auxiliary agent. The modified grapevine powder is taken as the suspending agent, is suspended in ethanol and will not form deposition even after long-time preservation, and the production cost is reduced at the same time. The prepared paint has a very good gas-storage and gas-discharge performance, and can prevent the defects on casting members such as pores, pin holes, recesses, and the like.

Description

technical field [0001] The invention relates to the field of casting coatings, in particular to a flake graphite alcohol-based casting coating and a preparation method thereof. Background technique [0002] Foundry coatings refer to casting auxiliary materials that are used to coat the surface of the cavity or sand core to change their surface refractoriness, chemical stability, metal erosion resistance, sand sticking resistance, etc. It is composed of various properties. It is a dispersion system composed of high-quality materials, and its composition mainly includes refractory materials, suspending agents, carriers, binders and special additives. When acting on castings, it is required that the coating has good process performance, work performance, quality stability and application reproducibility. Prevent defects such as cracking, trachoma, and white iron formation caused by excessive local cooling of casting products. There are many kinds of casting coatings, which ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 黄浩
Owner WUHU HONGKUN AUTO PARTS
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