The cost of casting equipment and molds is high, so die-casting processing is generally only used for mass production of large quantities of products. Manufacturing die-casting components is relatively easy, usually requiring only four main steps with low cost increments per item. Die casting is particularly suitable for manufacturing a large number of small and medium-sized castings, so it is the most widely used type of casting technology among various casting processes. Compared with other casting techniques, the surface of die casting is smoother and has higher dimensional consistency.
On the basis of traditional die-casting processing, several improved processes have emerged, including the non porous die-casting process that reduces casting defects and eliminates porosity. Mainly used for processing zinc, it is a direct injection process that can reduce waste and increase yield. There are also new die-casting processes such as precision and dense die-casting technology invented by General Dynamics and semi-solid die-casting.