28 February 2017

Advantages and disadvantages of die casting

Die casting process is widely used in the manufacturing sector and automobile industries because of many advantages of the die casting process. Let us have a deep insight into the pros and cons of die casting. 

Advantages of die casting : 

  • Because of the use of movable cores, it is possible to obtain complex casting than that by permanent mould casting.
  • Production rate is very high. The typical rate could be 200 pieces per hour.
  • Die casting process is completely automated.
  • Very small thickness can be easily filled because the liquid metal is injected at high pressure.
  • Very good surface finish in order of 1 micron can be obtained.
  • The surface generated by the die casting process is directly electroplated without further processing.
  • Dimensional tolerance is very close in order n between +0.08 to -0.08 can be obtained.
  • The die has a long life.
  • Inserts can be readily cast in place.
  • This process is very economical for large scale production.
  • It will give better mechanical properties compared to sand casting.

Disadvantages of die casting : 

  • Material limitations all material and alloy can not be cast. 
  • The cost of the machine dies and other equipment is high. 
  • Not economical for small quantity production. 
  • Heavy casting can't be cast by this process.
  • Limited to high-fluidity metals.
  • The air in the die cavity gets trapped inside the casting causes a problem of porosity.