The pressure casting of Dongguan CNC processing plant involves the injection of molten metal into the metal mold at high pressure to prepare the parts. Pressure casting is closely related to metal mold casting. Compared with metal modeling, because metal is injected under pressure, it is also called pressure model casting. Because of the high pressure involved in pressure casting, all the small parts, complex shapes and precision surface structural parts can be easily made.
In the pressure casting process of Dongguan CNC processing plant, the mold consists of two parts, one part fixed on the die casting machine is called fixed mold or concave die, the second part is called convex pressing die. When it moves, the casting can be taken out. When the two parts of the die are separated, the casting cycle begins, and the lubricant is usually spilled into the mold cavity by manual or automatic lubrication system. Two half dies are closed and clamped. The required amount of metal is injected into the model, and after the casting is solidified under pressure, the model opens and the casting is taken out.
There are two types of die casting machines in Dongguan CNC processing plant: hot chamber die casting and cold pressing casting. The main difference between the two types is that in the hot chamber, the heat preservation furnace used by liquid metal is integrated with die casting machine. However, in cold chamber machine, the metal is melted in a separate furnace, and then poured into the die casting machine with one pouring bag during each pouring process. This process is also called press injection. The process is shown in Fig. 6.9 Dongguan CNC processing factory is very good, and it is worth paying attention to!!