The Features Of Die Casting

Pressure casting, also known as die casting, is a casting method in which molten alloy liquid is poured into the pressure chamber to fill the cavity of a steel mold at high speed, and the alloy liquid solidifies under pressure to form a casting. The main characteristics that differentiate die-casting from other casting methods are high pressure and high speed.

① Liquid metal fills the mold cavity under pressure and crystallizes and solidifies at higher pressures, commonly ranging from 15-100MPa.

② The metal liquid fills the mold cavity at a high speed, usually between 10-50 meters per second, and some can even exceed 80 meters per second (the linear speed of the mold cavity introduced through the inner gate - the inner gate speed). Therefore, the filling time of the metal liquid is extremely short, about 0.01-0.2 seconds (depending on the size of the casting), which can fill the mold cavity.

Die casting is a precision casting method, in which the dimensional tolerance of die castings is very small and the surface accuracy is very high. In most cases, die castings can be assembled and applied without further turning processing, and threaded parts can also be directly cast. Most small parts such as cameras, typewriters, electronic calculators, and decorations, as well as complex parts of vehicles such as cars, locomotives, and airplanes, are manufactured using die casting.