The difficulties of stainless steel precision casting processing are as follows:
1. Large cutting force and high cutting temperature: This type of material has high strength, large tangential stress and large plastic deformation during cutting, so the cutting force is large. In addition, the thermal conductivity of the material is extremely poor, and the high temperature is often concentrated in the narrow area near the cutting edge of the tool, which accelerates the wear of the tool.
2. The work hardening of stainless steel precision casting is serious: the work hardening tends to be high during cutting, and the tool cuts in the work hardened area, which shortens the tool life.
3. Tool wear is accelerated. Materials generally contain high melting point elements, high plasticity, and high cutting temperature, which speed up tool wear, sharpen and change tools frequently, thereby affecting production efficiency and increasing tool usage costs.
4. Stainless steel precision casting is easy to stick to the tool: any stainless steel has the characteristics of strong chipping and high cutting temperature during processing.