Coated sand
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Coated sand is a resin binder sand that is covered with a layer of thermoplastic phenolic resin film on the surface of the aggregate before modeling and core making and embedded with a curing agent. When the coated sand is heated, the resin coated on the surface of the sand is melted. Under the action of the methylene group decomposed by urotropine, the molten resin is rapidly transformed from a linear structure into a non-molten body structure, thereby curing the coated sand. The coated sand production line of Lianxin Casting Sand Group is an industry-leading full-automatic coated sand production line imported from Taiwan Jinjing Group, with a production capacity of 12 T/h per line, PLC full-automatic control, stable product quality and an annual output of about 200000 tons.
The coated sand produced by Lianxin Casting Sand Group is made of high-quality raw materials. In addition to the raw sand, which is self-mining of sand ore, curing agents and binders are purchased from high-quality raw materials at home and abroad, with stable product performance. At present, Lianxin has three coated sand production bases in China, respectively in Zhangwu, Liaoning and Weifang, Shandong. The equipment used is Taiwan fully automatic coated sand production line, product quality reached the domestic leading level.
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