a part of our day to day lives. The products used in homes, aircrafts, artifacts, automobiles have become more durable and less expensive. Cast alloy parts are formed by melting the alloy and then pouring it in a mold under heavy pressure or vacuum. Gravity casting is also known as vacuum casting. It is a technique in which large diameter filaments are used with adequate separation. This ensures that no clusters are formed and also good metal wetting of the fiber is guaranteed. This technique was first used in 1970. The gravity casting method has advantages like cost effective, good quality, and process control over other casting techniques.
Gravity casting is done in ceramic molds, sand, permanent casting and also in investment or lost wax casting. The gravity casting process was started with common steel after successful implementation it was further tried on heat resistance super alloys. With recent development and with more refined methods today even titanium alloys are being cast using the gravity casting method and using ceramic crucibles. The use of desired mold designs and also specially made unique designs enable a reduction in the metal cast to yield the given part. This also helps in reducing the amount of energy that is used in making such cast