What is sand casting? What is the technological process of sand casting?

I. Definition and Introduction of Sand Casting Sand casting refers to the casting method of compacting sand into a mold and pouring it by gravity. Steel, iron and most nonferrous alloy castings can be obtained by sand casting. Because the molding materials used in sand casting are cheap and easy to obtain, and the mold is simple to manufacture, it can adapt to the single piece production, batch production and batch production of castings. For a long time, it has been a basic working procedure in foundry production. Second, the technological process of sand casting-making wooden mold-molding by turning sand-melting-pouring-falling sand-cleaning riser-inspection and warehousing.