Общий каталог Sumitomo 2018 - 2019 - страница 573

Technical Guidance SUMIBORON Cast Iron Machining Advantages of Using SUMIBORON for Cast Iron Machining Higher accuracy Longer tool life at higher cutting speeds GG: Grey cast iron GGG: Ductile cast iron Ceramic Cutting speed vc (m/min) Cutting speed vc (m/min) Good f Size accuracy Coated carbide Cermet BNS800 BNX10 BNS800 BN7000 BN7000 BNC500 BNC500 Ceramic Coated carbide BNC500 Cermet Ceramic BN7000 Coated carbide Cermet Good f Surface roughness Ra (μm) Tool life ratio Tool life ratio Turning Cast iron structure and wear shape examples 10 0,4 Surface roughness Rmax (mm) Work material: GG25 Flank wear width VB (mm) GG GGG DRY 8 0,3 Insert: SNGN120408(BN500) Cutting data: vc = 450 m/min 6 Structure 0,2 doc = 0,25 mm 4 f = 0,15 mm/rev 0,1 Continuous cutting 2 WET 0 0 200 400 2,5 5 7,5 10 12,5 Matrix Pearlite Pearlite + Ferrite Cutting length (km) cutting speed Vc (m/min) WET DRY Tool wear shape Wet Machine: N/C lathe (Water Work material: GG25 (HB200) soluble) Holder: MTJNP2525 Insert: TNMA160408(BN500) Cutting data: vc = 110~280 m/min Dry doc = 0,1 mm f = 0,1 mm/rev Crater wear For machining cast iron with SUMIBORON, cutting speeds (Vc) WET should be 200m/min and above. WET cutting is recommended. (v c ≥ 200 m/min) Milling SUMIBORON BN Finish Mill EASY - High speed machining Vc = 2000m/min - Surface Roughness Rz=3,2 (Ra=1,0) - Running cost is reduced because of economical insert - Easy insert setting with the aid of a setting gauge - Safe, anti-centrifugal force construction for high speed conditions 0,25 250 Ceramic Cutting data: Vc=400m/min doc = 0,5 mm, f t = 0,15 mm/tooth Vc=600m/min 0,20 200 Dry Flank wear width (mm) Number of pass 0,15 Vc=600m/min Vc=1000m/min 150 0,10 100 Typical thermal crack 0,05 Vc=1500m/min 50 Wet 0 0 0 20 40 60 80 100 120 140 160 180 200 300 450 600 750 900 1050 1200 1350 1500 Technical Guidance Number of pass Cutting speed (m/min) Dry cutting is recommended for high speed milling of cast iron Work material: GG25 Tool material: BN700 with SUMIBORON. Cutting data: doc = 0,5 mm, f t = 0,1 mm/tooth, DRY N18