Каталог Sumitomo сплавы и режимы - страница 32

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Grades Polycrystalline Diamond SUMIDIA Binderless Series SUMIDIA Binderless Series uses nano-polycrystalline diamond for the cutting edge and demonstrates excellent wear and fracture resistance compared to conventional sintered diamond tools. In particular, SUMIDIA Binderless Series allows for improvements in tool life and machining precision that go far beyond conventional diamond tools in the machining of hard brittle materials, such as carbide. A ● Excellent for High Precision Machining of Carbide Grades Nano-polycrystalline diamond with excellent wear resistance achieves high precision machining of carbide. ● Maintains Superior Dimensional Tolerances Over Many Hours Greatly reduces the number of tool replacements compared to conventional diamond Carbide Coated tools, and increases work efficiency while reducing total costs. ● Suitable for Hard Brittle Material Machining Hard brittle materials (such as ceramics) that could only be ground before can now be Cermet cut. Characteristics Ceramic ■ Comparison of Structures ■ Hardness Nano-Polycrystalline Diamond Conventional PCD SEM Structure SEM Structure Carbide Nano-Polycrystalline Diamond No anisotropy and ultra-hard Binder (Co) Single-crystal Layer Hardness depends on face orientation CBN Diamond Conventional PCD Load 4.9N PCD 100nm 5μｍ 0 50 100 150 Knoop Hardness HK(GPa) Diamond Particles Diamond Particles (30 to 50nm) (1 to 10μm) ■ Application (Carbide Machining) 1. Hardness Less Than 88HRA 2. Hardness 88HRA and Greater 0.20 0.20 Depth of Cut Depth of Cut 0.15 0.15 0.10 0.10 ap ap 0.05 0.05 (mm) (mm) 0 0.05 0.10 0.15 0.20 0 0.05 0.10 0.15 0.20 Feed Rate f (mm/rev) Feed Rate f (mm/rev) ■ Recommended Cutting Conditions (Carbide Machining) Work Materials Cutting Conditions Min. - Optimum - Max. Classification Hardness (HRA) SEH Grade Cutting Speed vc (m/min) Feed Rate f (mm/rev) Depth of Cut ap (mm/rev) 70 VM G7 60 83 to 87 5 - 20 - 30 0.03 - 0.10 - 0.20 0.03 - 0.10 - 0.20 VC G6 50 VM G5 VC 40 88 and above 5 - 15 - 30 0.03 - 0.05- 0.07 0.03 - 0.05- 0.07 G2 Coolant : Dry Grade Range Map From page A33 Characteristic Values From page A33 A32