Explanation

It is called die casting for short. It is a foundry method that uses the injection piston to inject the metal liquid in the pressure chamber of the die-casting machine into the reusable metal mold at a high pressure and speed, and then solidifies under the pressure. Die casting has high productivity, accurate casting size and high efficiency of spare filling structure, which is especially suitable for the production of small thin-walled complex parts. Die casting machine is mainly divided into hot pressing chamber and cold pressing chamber, and casting metal is mainly non-ferrous alloy. Metals with higher melting point, such as Al, Cu, Mg based alloy, generally use cold chamber die-casting machines, and the piston pressure varies according to the type of alloy, which is 20-lOOMPa; For low melting point metals such as Zn, Pb, Sn based alloy, the hot cell die-casting machine can be used, and the piston pressure is 714MPa. Die casting can also be used for small steel castings. If the metal mold is pre vacuumized before die-casting, it is called vacuum die-casting.

Classification