1) Liquid metal mold filling is stable, and the mold filling speed can be controlled according to different structures of castings and different materials of molds. Therefore, during mold filling, metal overturning, impact and splash can be avoided, oxidation slag inclusion can be reduced, and casting quality can be improved.
2) When the metal is filled under pressure, the fluidity is increased, which is convenient for pouring complex thin-wall castings and makes the contour of castings clear.
3) The casting crystallizes and solidifies under pressure, which improves the air tightness of the casting, can get sufficient feeding, and is conducive to obtaining castings with dense structure and high mechanical properties.
4) The gating system of low-pressure casting is relatively simple, and the riser can be reduced or omitted. The non solidified liquid metal can flow back to the crucible to reduce the loss of liquid metal. The process yield is as high as 95%.
5) Low pressure die casting (LPDC) has no strict restrictions on mold materials, which is basically the same as that used for general gravity casting. It can be applied to sand mold, wax loss mold, shell mold, graphite mold, semi-metallic mold, metal mold, etc.
6) Low pressure die casting (LPDC) has a wide range of applications and can be used for castings with different wall thickness, different sizes, different heights and different structures.
7) Low pressure die casting (LPDC) can basically be used for various casting alloys, not only for non-ferrous alloys, but also for cast iron and cast steel. It has a wide range of application for alloy grades.
8) During pouring, only pneumatic components need to be controlled without lifting and dumping, and the working conditions are improved.
9) The production area is small and the investment equipment is small.
10) Easy to realize mechanization and automation.
11) For castings with more hot spots and poor sequential solidification conditions, cold iron and riser shall be adopted to solve them.