Die casting is a metal casting process that features the use of a mold cavity to apply high pressure to the molten metal. The mold is usually made of a stronger alloy. This process is somewhat similar to injection molding. Most die-casting castings are iron-free, such as zinc, copper, aluminum, magnesium, lead, tin, and tin-lead alloys and their alloys. Depending on the type of die-casting, a cold chamber die casting machine or hot chamber die casting machine is required.
Casting equipment and molds are expensive, so the die casting process will generally only be used to manufacture large quantities of products in bulk. It is relatively easy to make die-cast parts. This generally takes only four major steps, and the incremental cost per item is very low. Die casting is particularly suitable for the manufacture of a large number of small and medium-sized castings, so die casting is the most widely used of various casting processes. Compared to other casting techniques, the die-cast surface is more flat and has a higher dimensional consistency.
On the basis of the traditional die-casting process, several improved processes have been created, including the non-hole die-casting process that reduces the voids in casting defects. Mainly used for the processing of zinc, it can reduce the direct injection process for increasing the yield of waste. There are also new precision die-casting technologies such as precision die-casting technology and semi-solid die-casting