Общий каталог Sumitomo 2018 - 2019 - страница 20

Recommended CBN Grades and Chipbreakers Hardened Steel Grades BNC2010 / BNC2020 / BN1000 / BN2000 Selection Insert BNC2010: A grade for high-precision machining applicable for finishing requiring good surface roughness and dimensional accuracy. Provides further improved wear resistance thanks to a newly developed CBN substrate coated with a TiCN layer. Reduces flank wear and achieves excellent surface finish thanks to newly developed special stable multi-layered coating. BNC2020: A general-purpose grade applicable to general hardened steel machining. A newly developed tough CBN-substrate coated with a highly wear-resistant TiAlN layer. Achieves more stable machining and longer tool life by employing a highly adhesive layer for high chipping resistance. BN1000: For high speed machining. BN1000 provides the highest wear resistance of all uncoated SUMIBORON grades. Features improved fracture resistance while still placing a priority on wear resistance. BN2000: General purpose grade suitable for typical hardened steel machining applications. Provides a high degree of fracture and wear resistance. Performance BNC2010 BNC2020 7 Conventional Coated CBN ■ 6 BNC2020 Surface Roughness (µm) 5 4 Conventional coated CBN ■ Conventional ● Flank wear occurs coated CBN 1,8 times the 3 ■ conventional ● BNC2010 tool life 2 ● ● ■ Competitor‘s 1 coated CBN 0 1,0 2,0 3,0 4,0 BNC2010 0 2,5 5,0 Cutting Distance (km) Reduced flank wear Cutting Distance (km) Work Material: 15CrMo5, 58-62HRC, Continuous Work Material: SCM415-5V, 58-62HRC, Interrupted Insert: DNGA 150408 NC4 (BNC2010) Insert: CNGA 120412 NC4 (BNC2020) Cutting Edge Treatment: S01225 Cutting Edge Treatment: S01225 Cutting Conditions: vc=160m/min, f=0,08mm/rev, ap=0,1mm, Wet Cutting Conditions: vc=130m/min, f=0,1mm/rev, ap=0,6mm, Dry BN1000 / BN2000 l Wear Resistance (Continuous Cutting) l Chipping Resistance (Interrupted Cutting) (Comparison based on conventional BN2000 as 100%.) Competitor 1 Breakage BN2000 Flank Wear Width (mm) BN2000 Approx. 1,4x tool life! Conventional Grade 1 Competitor 1 Cutting Distance (km) Work Material: 15CrMo5, Round Bar (58-62HRC) Cutting Conditions: vc=100m/min, f =0,1mm/rev, ap=0,2mm, Dry BN1000 Approx. 1,4x tool life! Competitor 2 Flank Wear Width (mm) Conventional BN1000 Grade 2 Competitor 2 Tool Life Ratio (%) Cutting Distance (km) Work Material: 15CrMo5, 8V Grooved Material (58-62HRC) Work Material: 100Cr6, Round Bar (58-62HRC) Insert: CNGA120408 NU-2 Cutting Conditions: vc=150m/min, f =0,1mm/rev, ap=0,2mm, Dry Cutting Conditions: vc=150m/min, f =0,1mm/rev, ap=0,2mm, Dry A15