Analysis of Factors Affecting Dimensional Accuracy of Castings In Fine Casting Process

Fine casting is a wide range of casting methods, including several varieties. What are the details? In addition, what factors will affect the dimensional accuracy of fine castings? These are the common sense of fine casting. For us, they are also the common sense points. We must grasp them when understanding fine casting, so here are the main points to introduce these two aspects.

1. Varieties of fine casting

There are many kinds of fine casting, mainly including pressure casting, Investment Casting, lost foam casting, ceramic mold casting and metal mold casting. Investment casting is commonly used, which can also be called wax loss casting.

2. Factors affecting the dimensional accuracy of fine castings

The main factors affecting the dimensional accuracy of fine castings are summarized as follows:

Casting structure: the first is the wall thickness of the casting and the shortening rate of the data.

Casting raw materials: the first is the carbon content in the material, which will affect the line shortening rate.

Shell making data: it refers to the variety of shell making data and the corresponding expansion coefficient.

Shell baking: it mainly depends on shell expansion coefficient and temperature.

In addition to the above, there are aspects such as casting temperature, pressure holding time and investment mold scale. Each aspect can not be ignored and is very important, so we can't be careless.