Die casting is a kind of metal casting technology, which is characterized by applying high pressure to molten metal using the cavity of the die. Molds are usually made from higher-strength alloys, a process that is similar to injection molding. Most die-casting castings are iron-free, such as zinc, copper, aluminum, magnesium, lead, tin, and lead-tin alloys, as well as their alloys. Depending on the type of die-casting, it is necessary to use cold chamber die-casting machine or hot chamber die-casting machine.
Die-Casting is particularly suitable for manufacturing a large number of small and medium-sized castings, so die-casting is the most widely used in various casting processes. Compared with other foundry technologies, the surface of die-casting is more flat and has higher dimensional consistency. The traditional die-casting process consists of four steps, or is called high-pressure die-casting. These four steps include mold preparation, filling, injection and sand drop, which are also the basis for various improved die casting processes. In the preparation process needs to be injected into the mold cavity lubricant, lubricants In addition to help control the mold temperature can also help casting stripping.