Каталог Sumitomo пластины с кубическим нитридом бора Sumiboron - страница 20

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Solid SUMIBORON for Cast Iron Machining BNS800 K Cast Iron From Finishing to Roughing of Cast lron and Exotic Alloys! ■ General Features New solid structure CBN insert. As all the edges can be used, total machining cost will be lower, compared to conventional CBN inserts. Biggest demand for this insert will be in Cast Iron machining. As conventional brazed CBN inserts are not suitable for high speed cutting and roughing, BNS800 can be used even for high speed finishing processes with many times the tool life of ceramic inserts. Additionally, RM type cutter is developed exclusively for Solid SUMIBORON and is suitable for high-speed rough milling. ■ Characteristics ● Larger Cutting Depths 100% solid CBN structure where the whole edge can be use. ● High Precision Machining Excellent balance of wear resistance and toughness. Refer to pages L98 to L99 for BNS800 special holders ● Total Cost Effectiveness and page L113 for RM Type All corners of the insert can be utilized. milling cutter. ■ Cutting Performance Continuous Cutting Interrupted Cutting Flank Wear Width (mm) Comp. CBN 0.06 F Int. cut OK. F BNS800 Chipping 0.14mm D F D 0.04 BNS800 F D Comp. Fracture F D Solid Int. cut. NG. 0.02 D CBN 0 10 20 30 0 3 6 Cutting Distance (km) Cutting Distance (km) Work Material : Bar (FC300) Insert: SNGN090308 Work Material : Bar-6V grooves (FC300) Insert: SNGN090308 Cutting Conditions : vc=800m/min, f =0.2mm/rev, ap=0.5mm, Dry Cutting Conditions : vc=600m/min, f =0.3mm/rev, ap=0.5mm, Dry ● Wear resistance is better than competitor’s. ● Double the competitor’s fracture resistance. ■ Application Example ● Cylinder Bore ● Machine Bed ● Carbide Roll ● Sprayed Face Bore Medium Finishing FC250 Carbide (Co 15%) Colmonoy FC250 Finishing Boring Milling RM3125R L SUMIBORON Turning BNS800 10 pcs Comp. CBN 6 pcs 5 pass BNS800 7,500 Bore BNS800 400 min BNS800 Int. cut OK. Comp. Solid 2,500 Bore Carbide 60min (Vc=500m/min) Comp. 1 pass Breakage BNS800 CBN CBN Comp. CBN 200 400 0.5 1 Cutting Duration (min) Ratio Cutting Conditions Med. Finish Finishing Cutting Conditions Roughing Cutting Conditions Finishing Cutting Conditions Roughing Finishing Grade BNS800 Grade BNS800 Grade BNS800 Grade BNS800 Cat.No. SNGN090308 Cat.No. SNEN090308W Cat.No. RNGN090300 Cat.No. SNGN090312 SNGN090308 vc 1,000m/min vc 1,500m/min vc 40m/min vc 80m/min f 0.3mm/rev 0.25mm/rev fz 0.2mm/t f 0.15mm/rev f 0.04mm/rev 0.03mm/rev ap 0.2mm ap 2.5mm (2 pass) ap 0.2mm ap to 3mm 0.5mm Coolant Wet Coolant Dry Coolant Wet Coolant Wet L20