Каталог Sumitomo сплавы и режимы - страница 19

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Material Representative Grades / H Hardened Steel Work Application Examples Hardened Steel Grades BNC2010 / BNC2020 / BN1000 / BN2000 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. A 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. BNC2010 / BNC2020 BN1000 ：For high speed machining. Provides the highest wear resistance of all uncoated SUMIBORON grades. 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. Stainless BNC2010 Cutting Performance BNC2020 Cutting Performance Steel ● Continuous Cutting of Hardened Steel ● Interrupted Cutting of Hardened Steel 7 Cast Iron After 8km After 5km Previous Coated CBN ■ 6 Surface Roughness, Rz(μm ) BNC2020 5 After 3km ■ Previous Coated CBN Previous Exotic 4 Alloy ● Notch wear Coated After 8km CBN 3 ■ ● 2 ● BNC2010 After 2.5km Hardened Non-Ferrous Small Product ■ ● Comp. Coated Steel 1 CBN 0 BNC2010 2 4 6 8 0 2.5 5.0 Reduced notch wear Cutting Distance (km) Tool Life (km) Metal Work Material：SCM415 58-62HRC (Continuous) Work Material：SCM415-5V 58-62HRC (Interrupted Cutting) 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 BN1000 / BN2000 Cutting Performance ● Wear Resistance (Continuous Cutting) ● Chipping Resistance (Interrupted Cutting) （Comparison based on conventional BN2000 as 100%.） 0.25 Flank Wear Width (mm) 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! 0.16 Flank Wear Width (mm) Competitor 2 Competitor 2 Conventional 0.12 BN1000 High Wear Grade 2 0.08 Competitor 2 BN1000 0.04 Excellent wear resistance! 0 50 100 150 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