1. Severe hardening of stainless steel precision castings during machining: There is a high tendency for machining hardening, and the tool life is shortened when it is in the machining hardening zone.
2. High cutting force and cutting temperature: These materials have high strength, high tangential stress during cutting, and large plastic deformation, resulting in high cutting force. In addition, the thermal conductivity of the material is extremely poor, and high temperatures are often concentrated in narrow areas near the cutting edge of the tool, thereby accelerating tool wear.
3. Accelerated tool wear, materials generally contain elements with high melting points and strong plasticity, and high cutting temperatures accelerate tool wear, leading to faster tool wear and frequent tool replacement, thereby affecting production efficiency and increasing tool usage costs.