Каталог Sumitomo пластины с кубическим нитридом бора Sumiboron - страница 14

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Coated SUMIBORON / SUMIBORON for Hardened Steel Machining BNC300 / BN350 H Hardened Steel The Ultimate in Interrupted Machining of Hardened Steel! ■ General Features BNC300 BNC300 CBN substrate that emphasizes on toughness coupled with a highly wear resistant TiAIN based coating layer that has improved adhesion strength. With a good balance of fracture and wear resistance, stable and longer tool life can be achieve in interrupted cut 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. ■ Characteristics BNC300 ● Stable and long tool life in interrupted cutting Achieving stable and long tool life in heavy interrupted cutting, with superior fracture resistance. ● Superior dimensional precision Good adhesion strength, TiAIN based, high wear resistance coating. Achieving superior dimensional precision even in interrupted cutting. ● Suitable for different types of workpieces Achieving significantly longer tool life even on workpieces that have a mixture of continuous and interrupted cutting. BN350 ● Stable and long tool life in interrupted cutting Stable and long tool life with superior fracture resistance, that prevents fractures which commonly occurs during interrupted cutting. ■ Cutting Performance Continuous Cutting + Mid Interrupted Cutting (Interruption Frequency 50%) Heavy Interrupted Cutting (Interruption Frequency 100%) Comp. CBN: Breakage Comp Coated BN350 0.10 0.10 Flank Wear Width (mm) D Flank Wear Width (mm) CBN: Breakage BNC300: Breakage Coating D chip-off D D D D 0.05 F D BNC300 0.05 D D BN350 D Able to continue D D D Able to continue D D 0 1 2 3 4 0 1 2 3 Cutting Distance (km) Cutting Distance (km) Work Material: SCr420 (58-62HRC) Insert: 4NC-CNGA120408 Work Material: SCr420 (58-62HRC) Insert: 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 ● BN300 has superior balance of fracture and wear resistance. ● BN350 exhibits very good fracture resistance. L ■ Application Range ■ Recommended Cutting Conditions SUMIBORON ● Coated SUMIBORON ● SUMIBORON (For BNC300/BN350) 300 BNC100 300 Cutting Speed vC (m/min) Cutting Speed vC (m/min) BN1000 Cutting Speed vc(m/min) BNC160 50 80 100 120 150 BNC2010 200 BNC200 200 BNC2020 BN2000 BNX25 BNX20 120 100 100 BN350 BNC300 Feed Rate f D.O.C. ap (mm/rev) (mm) 0.03 to 0.20 0.03 to 0.30 Interruption Interruption * Cutting Conditions: Dry Continuous Light Interrupted Medium Interrupted Heavy Interrupted Continuous Light Interrupted Medium Interrupted Heavy Interrupted Smaller Impact Force on Cutting Edge Larger Smaller Impact Force on Cutting Edge Larger L14