Каталог Sumitomo пластины с кубическим нитридом бора Sumiboron - страница 21

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 Coated SUMIBORON for Ductile Cast Iron Machining K  BNC500 Cast Iron Coated CBN Grades for Ductile Cast Iron Machining ■ General Features Broad improvements in the toughness of the CBN sintered body 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 cast iron. High ■ Characteristics ● Achieves a Long, Stable Tool Life in High Speed Machining of Ductile Cast Iron Superior wear resistance, makes stable machining possible under high-speed conditions. Cutting Speed BNX10 BNC500 ● Supports High-precision Machining Can maintain excellent dimensional tolerance and surface roughness over many hours. BN500 BN7000 BN700 Low Small Impact on Cutting Edge Large ● FCD450 Continuous Cut (V-T Chart) ● FCD700 Continuous Cut (V-T Chart) 1,000 1,000 BN500 (m/min) 500 BN7000 BNC500 (m/min) 500 Vc Vc Speed Speed Cutting BN500 * and indicate Cutting BN7000 BNC500 development of front 100 cutting edge boundary 100 0 1 10 100 wear. 0 1 10 100 Tool Life (km) Tool Life (km) Work Material: FCD450(160HB) Insert: 4NC-CNGA120408 Work Material: FCD700(260HB) Insert: 4NC-CNGA120408 Cutting Conditions: f=0.2mm/rev, ap=0.2mm, Wet Cutting Conditions: f=0.2mm/rev, ap=0.2mm, Wet Tool life limit set at: VBmax=0.2mm Tool life limit set at: VBmax=0.2mm ■ Machined Surface Quality ■ Application Range ■ High Precision Machining Surface Roughness 500 10.0 BNC500 5.0 Speed (m/min) 400 L Ra=0.6μm 0 BNC500 Tolerance Ceramic 300 Coated carbide SUMIBORON -5.0 Cermet -10.0 Cutting 200 BNC500 10.0 AC405K / AC415K / AC420K IT6 Ceramic 5.0 0 Good← Ra=2.3μm 0 FCV FCD450 FCD600 FCD700 (CGI) Strength Hard 0.4 0.8 1.6 3.2 -5.0 Vermicular -10.0 Cast Iron Ductile cast iron Good← Surface Roughness Ra (μm) Cutting Distance 3km Work Material: FCD700 (260HB) ■ Recommended Cutting Conditions Cutting Conditions: vc=400m/min, f=0.2mm/rev, ap=0.2mm, Wet Cutting Speed vc(m/min) 200 300 400 500 Feed Rate f D.O.C.ap (mm/rev) (mm) 0.10 to 0.40 ≤ 0.50 * Coolant: Wet L21