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Alcohol-based foundry coating of light burned dolomite and fabrication method thereof

A technology of lightly burning dolomite and foundry coatings, applied in foundry molding equipment, coatings, molds, etc., can solve the problems of alcohol-based foundry coatings with single function, inability to meet large-scale industrial production, and poor high temperature resistance. Achieve the effect of increasing the comprehensive utilization range, excellent suspension, and reducing costs

Inactive Publication Date: 2014-09-03
杨菊霞
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  • 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

[0014] The light-burned dolomite alcohol-based casting coating is characterized in that it is made of the following raw materials in parts by weight: phosphoric acid 0.7, polystyrene foam balls 2.2, light-burned dolomite 2.1, graphite 40, chromite 56 , Attapulgite clay 1, zinc dithiophosphate 0.2, cocamidopropyl betaine 0.1, glass fiber 2, water hyacinth 14, phenolic resin 1, hexamethylenetetramine 2, ethanol 45, additive 3.

[0015] The auxiliary agent is made of the following raw materials in parts by weight: pig bone 27, rectorite 42, metakaolin 85, silica fume 30, silane coupling agent KH-5702, silica sol 0.4, nanometer silicon carbide powder 1, nanometer four Ferric oxide 1.2, angelica powder 1.2, sodium carboxymethyl starch 0.4, carboxymethyl cellulose 4, appropriate amount of water, the preparation method is to put pig bone, rectorite and metakaolin in a calciner at 560-680°C Calcined at low temperature for 2-3 hours, took it out, soaked it in 8-12% hydrochloric acid so...

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Abstract

The invention discloses an alcohol-based foundry coating of light burned dolomite. The alcohol-based foundry coating is characterized by being prepared from the following raw materials in parts by weight: 0.4-0.7 part of phosphoric acid, 1.2-3.5 parts of polystyrene foam ball, 2.1-3.2 parts of light burned dolomite, 40-55 parts of graphite, 55-60 parts of chromite, 1-2 parts of attapulgite clay, 0.2-0.4 part of zinc dithiophosphate, 0.1-0.3 part of cocamidopropyl betaine, 2-4 parts of glass fiber, 11-14 parts of water hyacinth, 1-4 parts of phenolic resin, 2-3 parts of hexamine, 40-50 parts of ethanol and 3-6 parts of assistant. The water hyacinth is added to the raw materials after being processed at high temperature, the comprehensive utilization range of the water hyacinth is expanded, the cost is reduced, and the coating prepared by the method has the advantages of high temperature resistance, good fire resistance, caking property, coating property, excellent suspension property, easiness of smearing, good sand burning resistant effect and the like.

Description

technical field [0001] The invention relates to the field of casting coatings, in particular to a light-burned dolomite 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, w...

Claims

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Application Information

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IPC IPC(8): B22C3/00
Inventor 方学军
Owner 杨菊霞
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