Deciding on a metal casting process can be complicated, and is impacted by a number of things such as budget, volume, and the type of object being cast.
Two common methods of casting are sand casting and permanent mold or “chill” casting. Both of these methods work by pouring the molten metal into a three-dimensional mold. However, the nature of the mold is very different.
What is Sand Casting?
Sand casting is characterized by using sand as the mold material. A pattern is used, around which the sand is compacted. This forms a cavity in the form of the component to be cast. The sand used is a blend of silica grains with five to 20% clay or bentonite and two to eight percent water. Sand can be shaped by hand or by machine.
Sand casting can be used for cast iron, copper alloy, and aluminum alloy, and steel. It is commonly used for some automotive parts.
What is Permanent Mold Casting?
Permanent mold casting, on the other hand, uses a reusable mold made out of steel or copper alloy. The mold is then coated with a graphite mix to ensure that the cast metal does not stick to the mold. permanent mold casting
No comments:
Post a Comment