Alum ore tailing alcohol-based casting paint and manufacturing method thereof

A technology of alum tailings and casting coatings, which is applied to casting molding equipment, coatings, casting molds, etc., can solve the problems of weak sand sticking resistance, easy delamination, poor suspension stability, etc., and achieve changes in compactness and enhanced Air permeability, the effect of improving the quality of castings

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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Experimental program
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Embodiment Construction

[0014] The alum tailings alcohol-based casting coating is characterized in that it is made of the following raw materials in parts by weight: light burnt magnesia 66, perlite powder 28, alum tailings 32, calcium bentonite 2, EFKA- 2035 defoamer 0.1, carbon fiber 0.7, antioxidant 1212 0.6, calcium stearate 0.4, dodecyltrimethylammonium sulfate 0.7, pine bran 14, sodium carboxymethyl starch 1, ethyl silicate 5, ethanol 45. Auxiliary 3.

[0015] The auxiliary agent is made of the following raw materials in parts by weight: plant ash 17, graphite 89, cryolite 22, cyclodextrin 1.6, natural lacquer flakes 2.4, ethanol 25, lithium-based bentonite 1, nano-silicon carbide 0.8, iron oxide powder 2.5 , nano calcium carbonate 3, chitin 0.9, pulp 12, appropriate amount of water, the preparation method is to put graphite and cryolite in a calciner and calcinate at 550-680°C for 2-3 hours, take it out, put in 8-12% Soak in hydrochloric acid solution for 4-5 hours, filter and take out, wash ...

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Abstract

The invention discloses an alum ore tailing alcohol-based casting paint, which is characterized by being composed of the following raw materials in parts by weight: 65 to 80 parts of lightly-calcined magnesite, 25 to 30 parts of perlite powder, 30 to 50 parts of alum ore tailing, 2 to 4 parts of bentonite, 0.1 to 0.4 part of EFKA-2035 defoaming agent, 0.4 to 0.7 part of carbon fiber, 0.2 to 0.6 part of antioxidant 1212, 0.4 to 0.8 part of calcium stearate, 0.7 to 2.1 parts of dodecyl trimethyl ammonium sulfate, 14 to 18 parts of pine wood bran, 1 to 3 parts of sodium carboxymethyl starch, 5 to 8 parts of ethyl silicate, 45 to 60 parts of ethanol, and 3 to 6 auxiliary agents. The alum ore tailing is modified, the compactness of the alum ore tailing is changed, the modified alum ore tailing is added into the raw materials to enhance the breathability of the paint so as to avoid the phenomenon of cold shut between the liquid metal and the coating during the casting process, and thus the obtained casting member quality is improved finally.

Description

technical field [0001] The invention relates to the field of casting coatings, in particular to an alum ore tailings 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, whic...

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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