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home > products >cast products > sand casting process

Sand casting process

There are a variety of types of sand casting, but the basic principle requires a mould to be formed from a sand mixture with a cavity of the desired shape into which molten metal is poured. Sand casting is a relatively labour intensive process and is suitable for larger castings and as a result, dimensional tolerances are not as tight.

Sand casting process

Process

  • Place a pattern in sand to create a mould
  • Remove the pattern and therefore leave a sand mould with the desired cavity shape
  • If a space within the casting is required, insert a core
  • Fill the mould cavity with molten metal
  • Allow the metal to cool so that it solidifies.
  • Break away the sand mould and remove the casting
  • Finally, excess material which includes the gate, runners, sprues and flash, must be separated from the castings
  • Secondary operations are often performed to produce features not readily castable, such as tapping a hole, polishing, plating, buffing, or painting.

Jinlogic has a proven track record sourcing and assembling products with many sand past components using aluminium pattern equipment. We can offer references as necessary to prove that we can meet you requirements.