The Process of Investment Casting

Investment casting: usually refers to the casting scheme where a pattern is made of a fusible material, and several layers of refractory material are coated on the surface of the pattern to form a shell. 

The pattern is then melted and discharged from the shell to obtain a casting without a parting surface. After high-temperature roasting, the casting scheme can be filled with sand and poured. Often referred to as "lost wax casting".

Process characteristics

Advantages: 

1. High dimensional and geometric accuracy; 

2. High surface roughness; 

3. Capable of casting castings with complex appearance and unrestricted casting alloys.

Disadvantages: 

Complex processes and high costs

Application: 

Suitable for producing small parts with complex shapes, high precision requirements, or difficulty in other processing, such as turbine engine blades.