Botou City Huarui Heavy Industries located in a "foundry town" reputation of the City of Hebei Province, is a production platform, one of the casting machine manufacturers. The company has advanced electronic detection methods and manufacturing processes, sophisticated production equipment, strong technical force and high level management team, product research and development in all CD / CM technology. "Heavy contract, keep credit" is the life of the enterprise. Gray iron castings Machine skateboards good sand casting resin stiffness, high early strength of this conditional use sand casting graphite cast iron solidification process of expansion, effectively eliminate shrinkage, shrinkage defects, to achieve gray iron, ductile iron pieces take less mouth, no riser casting. 2 Real foundry applications using polystyrene foam appearance furan resin self-hardening sand molding. When the liquid metal poured into the mold, the appearance of the foam at a high temperature rapidly vaporized liquid metal effect, burning disappeared, the molten metal takes the place occupied by the original foam, cooling and solidifying the same shape as the real appearance of the casting. 3 Relatively speaking, LFC for automobile cover single or small batch production, the machine bed and other large mold than traditional sand has a great advantage, it not only eliminates the need for expensive wood type costs, and ease of operation, shorten the production cycle, improve production efficiency, high dimensional accuracy, small allowance, good surface quality and other advantages