Каталог Sumitomo сплавы и режимы - страница 19

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Representative Grades / H Hardened Steel Material Work Application Examples Hardened Steel Grades BNC2010 / BNC2020 / BN1000 / BN2000 A BNC2010：For high-precision finishing requiring good surface roughness and dimensional accuracy. Enables stable machining and provides excellent surface roughness thanks to coating and CBN substrate with excellent notch wear resistance. Grades BNC2020：General purpose grade suitable for typical hardened steel machining applications. Achieves long tool life thanks to highly- wear-resistant and highly-adhesive coating and tough CBN substrate with excellent wear resistance and bonding strength. BN1000 ：For high speed machining. Provides the highest wear resistance of all uncoated SUMIBORON grades. BNC2010 / BNC2020 Features improved fracture resistance while still placing a priority on wear resistance. Steel BN2000 ：General purpose grade suitable for typical hardened steel machining applications. Provides a high degree of fracture and wear resistance. BNC2010 Cutting Performance BNC2020 Cutting Performance Steel Stainless ● Continuous Cutting of Hardened Steel ● Interrupted Cutting of Hardened Steel 7 Previous Coated After 8km After 5km Cast Iron 6 CBN ■ Surface Roughness, Rz(μm) BNC2020 5 Previous Coated CBN Previous After 3km 4 ■ Notch wear Coated Alloy Exotic ● CBN 3 ■ After 8km 2 ● ●BNC2010 After 2.5km Hardened ●■ Comp. 1 Coated Steel CBN 0 2 4 6 8 BNC2010 0 2.5 5.0 Cutting Distance (km) Reduced notch wear Tool Life (km) Non-Ferrous Work Material：SCM415 58-62HRC (Continuous) Work Material：SCM415-5V 58-62HRC (Interrupted Cutting) Metal Insert：4NC-DNGA150408   Edge Treatment：S01225 Insert：4NC-CNGA120412   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 Machining Small Product BN1000 / BN2000 Cutting Performance ● Wear Resistance (Continuous Cutting) ● Chipping Resistance (Interrupted Cutting) （Comparison based on conventional BN2000 as 100%.） Flank Wear Width (mm) 0.25 Breakage Able to Competitor 1 Unable to Continue BN2000 0.20 continue 0.15 Breakage caused by BN2000 Approx. 1.4x tool life! crater wear BN2000 0.10 Conventional 0.05 Excellent wear Grade 1 resistance! 0 2 4 6 8 10 Competitor 1 Cutting Distance (km) Work Material: SCM415H Round Bar (58-62HRC) Cutting Conditions: vc=100m/min f =0.1mm/rev ap=0.2mm Dry BN1000 Approx. 2x tool life! Flank Wear Width (mm) 0.16 Competitor 2 Competitor 2 0.12 BN1000 Conventional High Wear Grade 2 0.08 BN1000 Competitor 2 0.04 Excellent wear 0 50 100 150 resistance! 0 1 2 3 Tool Life Ratio (%) Cutting Distance (km) Work Material: SCM415H 8V Grooved Material (58-62HRC) Work Material: SUJ2 Round Bar (58-62HRC) Insert: 2NU-CNGA120408 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 A19