Общий каталог Sumitomo 2018 - 2019 - страница 489

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SUMIBORON Cutting Speed (m/min) (mm)Width of Flank Wear Tolerance Good Cutting Speed a HighLow a a a Coated SUMIBORON K Ductile Cast Iron BNC500 Coated CBN grade for ductile cast iron machining - General Features Further improvements in the toughness of the sintered CBN and wear resistance from the application of a newly developed high- purity TiC binder. In addition, it demonstrates exceptional wear resistance by combining a ceramic coating with excellent heat resistance. High-speed and high-precision machining is achieved when finishing ductile cast iron. It also provides a long, stable tool life in machining high-strength ductile cast iron, special cast irons such as vermicular cast iron, and centrifugally cast iron. - Characteristics l Achieves a Long, Stable Tool Life at vc=400 m/min Superior wear resistance, makes stable machining possible under high-speed conditions. BNX10 BNC500 l Supports High-precision Machining Can maintain excellent dimensional tolerance and surface roughness. BN500 BN7000 BN700 Small a Large Impact Force on Cutting Edge - Cutting Cast Iron Continuous Cutting Machined Surface Quality Performance Competitor´s CBN Surface Roughness Carbide Previous CBN 10,0 5,0 Ceramic BNC500 0 Ra=0,6µm BNC500 -5,0 ProlongedPerformance -10,0 10,0 5,0 Ceramic 0 Ra=2,3µm -5,0 Cutting Length (km) -10,0 Work material: GGG70, Round Bar Cutting Length (km) Insert type: CNGA 120408 NC-4 Work material: GGG70 Cutting data: vc = 400 m/min, f = 0,2 mm/rev, doc = 0,2 mm Cutting data: vc = 400 m/min, f = 0,2 mm/rev, doc = 0,2 mm Wet Wet - Application Range - High Precision - Recommended Machining Cutting Conditions Ductile Cast Iron vc (m/min) 100 200 300 400 500 l l l l l BNC500 CeramicCoated Carbide Cermet f d oc (mm/rev) (mm) AC405K, AC415K, AC420K 0,1 - 0,4 0,03 - 0,5 BN7000 k Coolant ... Wet Depth of Cut (mm) Surface Roughness (µm) L18