What are the reasons for the different surface roughness of stainless steel castings?

Stainless steel castings are not easy to rust and have high density. It can be seen from its production process that only pure stainless steel liquid needs to be cast, and castings can be produced after a series of processing techniques. Let me take you to understand the reasons for the different surface roughness of stainless steel castings.


1. The surface roughness of the melt mold is a key factor affecting the surface roughness of stainless steel castings, and is also related to the compression surface quality. The investment pressing method is related to the main parameters of the pressing process.

2. The surface quality of stainless steel is based on the columnar crystalline mesh as a framework, refractory insulation material. Additives and water are filled in the middle, and then after drying and baking, there will be pores of different sizes on the surface. The key reason for the rough surface of stainless steel castings is that the metal Material penetrates surface pores.

3. After using stainless steel, the metal material liquid is poured into the mold and cools slowly, the particles of the casting are coarse, and the grooves between the particles will make the surface of the stainless steel casting rough.

4. To solve the problem of alloy deterioration, select filling materials such as zircon with good thermal conductivity to increase the cooling rate of stainless steel castings, make the surface particles of the castings fine, and reduce the surface roughness of the castings.

5. The temperature of stainless steel. The liquid pouring temperature and tension of metal materials. The main parameters in the processing process, such as the degree of vacuum during pouring, will have an impact on the surface roughness of stainless steel castings, especially the soft pouring temperature.

6. The relationship between temperature, metal material liquid pouring temperature, and casting surface roughness is that as the temperature and metal material liquid pouring temperature increase, the characteristics of the metal material liquid filling are improved, and the depth of penetration into the surface pores increases. Surface roughness increases.