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Position:Jinlin fused alumina>>Refractory>> Coated Sand

Coated Sand

Author:Jinlin corundumTo update: 2016-09-22

We belong to one Earth day with a common fate, but we are just part of the same planet, the land we live in is not the same, so we still have differences, we can not say the same. As we said today coated sand, although it is also with the “sand”, but we have to mind and sand or a certain distinction, then, our company will tell you that they make any difference?
I.Coated sand overview
Coated sand is a high-quality selection of natural sand sand base, after washing off the mud, surface treatment and other special properties of the resin coating system and the optimal processing technology to form.
Coated sand, mixed method experienced a dry blend method, after the cold coating method, temperature coating method, a thermal coating method four stages. Currently we produce almost all coated sand thermal coating method.
Thermal coating method process raw sand is first heated to a certain temperature, and then separately with a resin, Ullo off the product solution and calcium stearate are mixed and stirred, cooled from crushing and screening. Due to differences in formulation, mixing molding process is different.
Coated sand particles are relatively round, uniform size, good air permeability, high compaction.
II.The coated sand features:
According coated sand production process we can see that the coated sand has the following characteristics:
1.Vibration sand, high strength, low gas, low expansion;
2.Lax, good casting surface finish;
3.Can not afford to shell layer, good thermal stability, good thermal conductivity, good liquidity, casting surface smooth;
4.High strength, high temperature, low expansion, good mold release, anti-sticking sand is good;
5.The shell is not uniform shelling, fast curing;

2
III.The types of precoated sand
♦General Category coated sand
Quartz sand, thermoplastic phenolic resin, hexamethylenetetramine and calcium stearate, without concerning additives. Generally applicable to the production of cast iron parts.
♦High strength and low gas type of coated sand

High strength and low gas type of coated sand is a common replacement products, by the addition of additives and use of new technology related to the preparation, strength than ordinary coated sand more than 30%, for the production of complex precision iron castings .
♦High temperature coated sand Class
High strength, heat resistance long time properties at high temperatures, for complex thin-walled cast iron automotive engine block, cylinder head, container production angle.
♦Easy breakup type of coated sand
Easy breakup type of coated sand has good strength, but also has excellent low temperature performance collapsing, suitable for the production of non-ferrous metal castings.
♦Other special requirement of precoated sand
In order to meet the needs of different products, we developed a series of special coated sand such as: centrifugal casting coated sand coated sand chilling, wet coated sand, sand release, anti-veining, anti-cellulite coated sand Wait.
Shizui Mountain City Jinlin Fused Alumina Refractories Co., Ltd. is a diversified manufacturing plants, research and development, production, sales and service in one. The company mainly produces fused alumina products, brown fused alumina, white fused alumina, silicon carbide, bauxite, alumina ball, garnet, aluminum oxide powder, zircon sand, castable and other professional production and processing company with a complete quality and scientific management system.
Over the years we always uphold the “quality of products, I was the first, customer service, I do the best,” the operating principle, integrity, dedication, truth-seeking, innovative spirit of enterprise, market-oriented, the business has made considerable development of. And has always insisted: “commitment to quality, reasonable prices, speedy service, sincere and innovative” development concept, not only to provide customers with high quality products, good customer service is more work!
These are the brief introduction of our company for coated sand, and I hope you have help. Thanks for reading, hope to continue to pay attention to our website Oh! We will update more information about the terms of fused alumina and refractory day!

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