Carbide End Mill For Stainless Steel
Stainless steel is a difficult material to process, mainly due to its high hardness and strong toughness.
The following is a specific analysis of the characteristics of stainless steel and the milling cutter characteristics required for processing stainless steel:
Characteristics of stainless steel:
1. Severe work hardening: The work hardening phenomenon of stainless steel is obvious, and the hardness of the hardened layer can reach 1.4 to 2.2 times that of the original substrate, with a strength of R=1470 to 1960MPa. This stainless steel has high plasticity and strengthening coefficient.
2. High cutting force: Stainless steel has high plasticity, especially in austenitic stainless steel, where plastic deformation is large, resulting in high cutting resistance, severe work hardening, high thermal strength, and difficulty in curling and breaking.
3. High cutting temperature: Due to the large plastic deformation and relatively low thermal conductivity of stainless steel, the temperature of stainless steel milling machine is about 200 degrees higher than that of 45 steel under the same conditions.
4. Difficulty in cutting: When processing stainless steel, the material is prone to bonding and forming chip lumps, making cutting difficult.
5. Tools are prone to wear: TiC hard spots in stainless steel can cause severe grinding and wear of the tool.
Characteristics of milling cutters required for processing stainless steel:
1. High strength and wear resistance: Due to the high hardness and toughness of stainless steel, it is necessary to choose milling cutters with higher strength and wear resistance for processing.
2. Small cutting angle: In order to cut a smoother machining surface, the cutting angle of the milling cutter should be smaller than that of ordinary materials.
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