Alkali phenolic coated sand casting process, the coated sand shell type placed in the sand box, the use of steel shot dry sand filling buried, through the vacuum negative pressure system to stabilize the sand, pouring the use of steel shot cooling, the faster the cooling rate, good permeability, good recycling of steel shot, small investment in equipment, slow consumption of molds, mold change is easy.
Alkali phenolic coated sand casting and ordinary sand casting, compared with less investment in equipment, covers an area of small, simple technology, high production efficiency, casting sand amount of Small, low scrap rate of the workpiece, good sand routing, less dust at the production site, small noise and other advantages, and thus less pollution of the environment. This new method This new method can make the surface of castings more polished, more accurate size, reduce or do not need machining, can shorten the production cycle, save metal materials, reduce costs, widely used in automobile cylinder block, automotive industry and other industries. It can shorten the production cycle, save metal materials and reduce the cost, and is widely used in the production of automobile cylinder block, cylinder head, intake manifold, all kinds of pipe fittings, pump body and other complex castings.