Casting

Casting:-

Casting is a manufacturing process by which a liquid material is usually poured into a mold, which contains a hollow cavity of the desired shape, and then allowed to solidify. The solidified part is also known as a casting, which is ejected or broken out of the mold to complete the process.Casting is most often used for making complex shapes that would be otherwise difficult or uneconomical to make by other methods.

Advantages:-

1.Size of cast objects vary over large range. An object from 5gm to 200 tonn, anything can be cast.

2.Casting can be effectively used for complex shaped objects.

3.Component made with casting process is lighter than the component made with other machining processes.

4.Casting provides versatility. Wide range of properties can be attained by adjusting percentage of alloying elements.

5.Casting can be made with hair like precision provided proper molding and casting technique is employed.


Disadvantages:-

1.Though casting is cheapest for MASS Production, it becomes non economical in case of JOB production.

2.Sand casting leaves rough surface which needs machining in most of cases. It adds up the cost in production.

3.Again in sand casting, poor dimensional accuracy is achieved.

4.Cast products are superior for compressive loads but they are very poor in tensile or shock loads.(They are brittle).