Characteristics, Process and Design of Investment Casting Precision Casting

Precision casting refers to the general term for the process of obtaining precise dimensional castings. Compared to traditional sand casting processes, precision casting produces castings with more precise dimensions and better surface smoothness. It includes investment casting, ceramic mold casting, metal mold casting, pressure casting, and lost foam casting.

Characteristics of investment casting precision casting

The casting has high dimensional accuracy and fine surface roughness (it can produce castings with CT4-CT7 according to GB6414-86); The surface roughness can reach Ra1.6-6.3);

Suitable for parts of different sizes and complex appearances;

Capable of casting small holes and thin-walled castings;

The range of casting alloys is wide.

Casting process and mold design

1. Casting process design (part drawing, casting drawing, casting process drawing, casting process card, casting inspection card);

2. Casting drawing elements (part structure design, machining allowance, dimensional tolerance, draft angle, process correction amount, inspection and processing reference, surface roughness, surface treatment requirements, etc.);

3. The casting process card includes processes such as wax mold, coating, melting, and heat treatment. Inspection cards generally include wax molds and final inspection cards.

4. Mold design.