Iron mold sand coating production line

Iron mold sand casting shares characteristics with sand casting, namely, the rigid sand mold shell, resulting in high overall strength and no deformation. It has wide adaptability, facilitates easy demolding, and ensures reliable and precise positioning of the casting.

Iron mold sand casting also possesses the characteristics of coated sand shell casting, offering convenient and rapid molding. Regardless of the casting type, the sand mold can be completed within two to three minutes. The sand density and surface hardness of the mold are consistently maintained by the equipment, eliminating the need for any coating. This results in a smooth casting and improves the shape and dimensional accuracy of the casting.

Iron mold sand casting also shares characteristics with metal mold casting. The iron mold has a significant cooling effect during the crystallization of the molten metal, refining the grain size of the casting and thus improving its overall strength. Simultaneously, the presence of the sand core avoids the disadvantages of metal mold casting, preventing white iron formation. For cast iron parts, various materials can be produced as-cast without heat treatment.

The casting mold, composed of an iron mold and a thin sand core, exhibits high rigidity, minimal deformation, and rapid cooling after locking. This results in castings with high dimensional accuracy, small machining allowances, and a dense microstructure, making it particularly advantageous for producing disc, rod, and shaft castings.

Generally, castings produced using iron molds with sand coating have a hardness approximately 20 HB units higher than those produced by conventional casting methods.