Общий каталог Sumitomo 2019 - 2020 - страница 1044

SUMIBORON Flank Wear Width (mm)vC (m/min)SpeedCuttingInterruption Strength vC (m/min)SpeedCuttingInterruption Strength Flank Wear Width (mm) Coated SUMIBORON / SUMIBORON for Hardened Steel Machining BNC300 / BNC350 Hardened Steel The Ultimate in Interrupted Cutting of Hardened Steel BNC300 ■ General Features BNC300 A CBN substrate that emphasizes toughness is coupled with a highly wear-resistant TiAlN-based coating layer that has improved adhesion strength. With a good balance of fracture and wear L resistance, this grade achieves a long, stable tool life in interruptedcutting or in a mixture of continuous and interrupted cutting. BN350 SUMIBORON series' highest fracture resistance and BN350 toughest CBN. Reliable grade for achieving stable tool life in heavy interrupted cutting conditions. ■ Features ● BNC300 · Long, stable tool life in interrupted cutting Achieving long, stable tool life in heavy interrupted cutting, with superior fracture resistance. · Superior dimensional tolerance TiAlN-based high-wear-resistance coating with good adhesion strength. Achieves superior dimensional tolerance even in interrupted cutting. · Supports various work material shapes Achieves long, stable tool life even in workpieces requiring both continuous and interrupted cutting. ● BN350 · Superb stability with regard to fracture Superior fracture resistance, preventing the fractures that commonly occur during interrupted cutting. Achieves a long, stable tool life. ■ Cutting Performance Continuous + Mid Interrupted Cut (Interrupted Cutting 50%) Heavy Interrupted Cutting: (Interrupted Cutting 100%) Competitor's CBN: Fracture 0.10 Competitor's Coated BN350CBN: FractureD 0.10 BNC300: Fracture D Coating chip-off 0.05 DF D DDBNC300 0.05DAble to Continue DDDDDDBN350Able to Continue D D 0 1 2 3 4 0 1 2 3 Cutting Distance (km) Cutting Distance (km) Work Material: SCr420 (58 to 62 HRC) Tool Cat. No.: 4NC-CNGA120408 Work Material: SCr420 (58 to 62 HRC) Tool Cat. No.: 2NU-CNGA120408 Cutting Conditions: vc = 120m/min, f = 0.1mm/rev, ap = 0.2mm Dry Cutting Conditions: vc = 100m/min, f = 0.1mm/rev, ap = 0.2mm Dry ● BNC300 has a superior balance of fracture and wear resistance. ● BN350 exhibits very good fracture resistance. ■ Application Range ■ Recommended Cutting Conditions ●Coated SUMIBORON ●SUMIBORON (BNC300/BN350 common) 300 BNC100 300 BN1000 Cutting Speed vc (m/min) BNC2010 BNC160 50 80 100 120 150 200 BNC2020 BNC200 200 BN2000 BNX25 BNX20 120100 100BNC300 BN350 Feed Rate f Depth of Cut ap(mm/rev)(mm) 0.03 to 0.20 0.03 to 0.30 Coolant: Dry Continuous Light Interrupted Medium Interrupted Heavy Interrupted Continuous Light Interrupted Medium Interrupted Heavy Interrupted Small Impact Force on Cutting Edge Large Small Impact Force on Cutting Edge Large L14