Tuesday, May 10, 2016

Die Casting Animation




DIE CASTING:-

  • ·         This is a type of casting which is used by most of the industries.
  • ·         In this the molten metal is forced into a mould.
  • ·         Generally the mould is permanent and made by the two part of the die.
  • ·         High pressure is used to pour the material into the die.
  • ·         It reduces the time required for the preparation of the mould as in sand casting.
  • ·         Dies is to be made of non-ferrous material.
  • ·         The size of the die depends on the requirement and cost of the product.
  • ·         The process is able to produce the complex shapes.
  • ·         Complex shapes involves large shapes, thin shapes, thick shapes, hollow castings etc.
  • ·         Various hollow shapes can be casted due to movable cores.
  • ·         High precision and fine surface finish is very important feature of die casting.
  • ·         For high tolerances die casting is preferred over sand casting.



PROCESS:-

  1. This process initially needs the mould die. Generally, the two piece die will be used. So the manufacturer needs to arrange a die which has smooth inside surface.
  2.       Then the metal is to be melted till it come into the liquid state.
  3.      The two pieces die will be kept together to make a mould cavity.
  4.      The molten metal will be poured into the mould cavity and allowed it to get solidify.
  5.     When the cooling is done the material can be ejected from the mould or from the die by shaking out.
  6.        Further machining processes or surface finishing processes can be done if required.


ADVANTAGES:-
  •      Finished and smooth objects can be obtained by die casting methods.
  •     It provides great dimensional accuracy and closer tolerances.
  •   Due to higher accuracy and finished surfaces. Generally, further machining is not necessary.
  •     The mould preparation time can be saved, as in the sand casting it takes lot of time to prepare the sand mould.
  •  Because of time saving advantage, it provides faster production rate.

DISADVANTAGES:-

  •  The casting defect of blow holes often occurs due to the air that is already present in the die before casting.
  •   The most important drawback is that, not all the materials can be given the desired shape with this method.
  •  Although larger shapes can be casted but due to availability of dies and occurrence of defects there is a limit of the size of the casting.
  •  Its initial cost of equipment, dies is very high.



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