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High-strength alcohol-based casting coating and manufacturing method thereof

A technology for casting coatings and manufacturing methods, which is applied to casting molding equipment, coatings, casting molds, etc., can solve the problems of poor chemical stability, low hardness, and poor high temperature resistance, and achieve strong air permeability, good leveling, and smooth surface effect

Inactive Publication Date: 2014-12-24
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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Embodiment Construction

[0013] The high-strength alcohol-based casting coating is characterized in that it is made of the following raw materials in parts by weight: quartz ceramic powder 79, fly ash 23, sodium bentonite 1, water glass 3, mineral wool 4.2, NAST resistance Fuel agent 0.5, cotton straw 15, dicumyl peroxide 0.3, polyvinyl alcohol carboxybutyraldehyde 5, ethanol 55, additive 3.

[0014] The auxiliary agent is made of the following raw materials in parts by weight: construction waste 26, attapulgite clay 6, kaolin 79, silane coupling agent KH-5701.5, nano silicon carbide 0.5, iron oxide powder 2, carboxymethyl cellulose 3, Nano zinc dioxide 0.6, glass microspheres 2, wollastonite 9, polyvinyl acetate emulsion 2.5, appropriate amount of water, the preparation method is to put construction waste, attapulgite clay, and kaolin into a calciner and calcinate at 550-680°C 2-3 hours, take it out, soak it in 8-12% hydrochloric acid solution for 4-5 hours, filter it out, wash it repeatedly with cle...

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Abstract

The invention discloses a high-strength alcohol-based casting coating. The high-strength alcohol-based casting coating is characterized by comprising the following materials in parts by weight: 75-90 parts of quartz ceramic powder, 20-30 parts of coal ash, 1-2 parts of sodium-based bentonite, 3-5 parts of water glass, 4.2-6.3 parts of mineral wool, 0.5-0.8 part of NAST flame-retardant agent, 15-18 parts of cotton stalk, 0.3-0.6 part of dicumyl peroxide, 5-8 parts of polyvinyl butyral, 55-65 parts of alcohol and 3-6 parts of additive. The high-strength alcohol-based casting coating disclosed by the invention has the advantages of high strength, good suspension property, uniform coating layer, good leveling property, high-temperature resistance and strong air permeability and the like; and after the coating is dried, the surface is smooth and clean without sand holes, bubbles and cracks.

Description

technical field [0001] The invention relates to the field of casting coatings, in particular to a high-strength 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 can...

Claims

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Application Information

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