Modern High Pressure Die-casting Processes for Aluminium Castings

There are about 33 processes commercially available for the production of aluminium castings. About 70% of the castings are produced using conventional high-pressure die-casting process. It’s main drawbacks are 1) Air and gas blow holes 2) Unable to weld 3) unable to heat treat to enhance mechanical properties. To overcome these, many modern processes have been invented. A few of them are 1) High Integrity die-casting processes such as 1) Squeeze casting 2) Local casting spot pressurising 3) Ultrahigh vacuum process 4) Massive vent process 5) Vacural process 6) Minimum fill time process 7) Nissan Innovative process 8) Controlled filling process 9) Vacuum high vac –V process 10)Semi -solid casting processes . In this paper a brief account of the above such processes are given.