Advantages of Botou Liangjian Machinery Resin Sand Casting Machine Bed Castings

Resin sand molds have good rigidity and high initial strength during casting, which allows for the effective elimination of shrinkage and porosity defects by utilizing the graphitization expansion during the solidification process of cast iron. This enables the casting of gray cast iron and ductile iron parts with fewer and no risers.

In the production of solid casting, polystyrene foam is used for shaping with self hardening sand using epoxy resin. When the molten metal is poured into the mold, the foam plastic pattern quickly vaporizes under the action of the high-temperature molten metal, burns and disappears. The molten metal replaces the position occupied by the original foam plastic, and cools and solidifies into a full mold casting with the same shape as the pattern.

Relatively speaking, lost foam casting has great advantages over traditional sand molds for producing single or small batches of automotive coverings, machine tool beds, and other large molds. It not only saves expensive wood mold costs, but also is easy to operate, shortens production cycles, improves production efficiency, and has advantages such as high dimensional accuracy, small machining allowance, and good surface quality.