And now for something completely different! About half of the light alloy castings are made byprocess, in which the liquid metal is injected at high speed and high pressure into a metal mold usually called the death. The principle is the pressure process shown in Fig. Figure shows a simple appliance for application instrument and pressure die casting.
It is characterized by good quality surface finish, which means that machining is not needed often. However, we have to take care to die castings of pressure, although similar to the product in this case to perfectly fit well to implement, is the lack of unsoundness internal concern in other applications in which strength and possibly required leak tightness properties. As we will see in later lectures, turbulence and air bubble entrapment often cause Aero Chocolate structure is poor metallurgical properties and causing leaks in many projections.