Metal casting process mainly has sand casting and special casting two categories.
Ordinary sand casting, the use of sand as a casting material, also known as sand casting, foundry, including wet sand type, dry sand type and chemical hardening sand type 3 categories, but not all sand can be cast. The benefit is that the cost is lower because the sand used in the mold can be reused; The disadvantage is that the casting mold production time, the casting mold itself can not be reused, must be destroyed to obtain the finished product.
Special casting, press molding materials and can be divided into natural mineral sand as the main special casting molding materials (e.g., investment casting, mold casting, shell mold casting, pressure casting, mold casting, ceramic mold casting, etc.) and metal as the main mold material of special casting (such as metal mold casting, pressure casting, continuous casting, low pressure casting, centrifugal casting, etc.).
There are two kinds of metal forming technology: gravity casting and pressure casting.
Gravity casting is a process in which liquid metal is injected into the mold under the action of the earth’s gravity. Generalized gravity casting includes sand casting, metal casting, investment casting, lost mold casting, mud mold casting, etc. The narrow meaning of gravity casting mainly refers to metal mold casting.
Die casting is a kind of precision casting method in which molten gold is filled under high pressure and high speed and then cooled and solidified under high pressure.
