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Stainless steel inserts are indexable carbide cutting tools specifically engineered for machining stainless steel materials. Due to stainless steel's inherent characteristics-severe work hardening, low thermal conductivity, and high affinity to tool materials-its machining is significantly more challenging than ordinary steel, requiring targeted optimization in insert substrate, coating, and chipbreaker design.
Machining Challenges:
Work Hardening: Severe deformation during cutting produces a hardened layer up to twice the internal material hardness, leading to abnormal edge wear
Heat Accumulation: Low thermal conductivity causes cutting heat to concentrate at the tip, leading to plastic deformation of the insert
Built-up Edge (BUE): The material's strong adhesion promotes chip welding on the cutting edge, causing edge chipping and degraded surface finish
