What are the advantages of using lost foam casting and resin sand casting

Lost foam casting; For the production of single or small batches of automotive coverings, large molds such as machine tool beds have significant advantages over traditional sand molds. They not only save expensive wood molding costs, but are also easy to operate, shorten production cycles, improve production efficiency, and have advantages such as small size, small machining allowance, and good surface quality.

The advantages of using resin sand casting are: 1. The resin sand casting has good rigidity, and in the early stage of casting, it is possible to utilize the graphitization expansion, shrinkage porosity, and shrinkage defects during the solidification process of cast iron to achieve low riser and no riser casting of gray cast iron and ductile iron parts. 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 will vaporize under the action of the high-temperature molten metal, burn and disappear, and the molten metal will replace the position occupied by the original foam plastic, and will be cooled and solidified into a full mold casting with the same shape as the pattern.