Общий каталог Sumitomo 2019 - 2020 - страница 1048

SUMIBORON Chip Evacuation Rate (cm3)Flank Wear Width (mm) GoodMachined surface quality SUMIBORON for Cast Iron / Powdered Metal Machining BN7000 Cast Iron SinteredAlloy For high-speed finishing of cast iron, powdered metals and exotic alloys ■ General Features Medium-grain CBN sintered to a high density to achieve the maximum content percentage. Also delivers superior fracture resistance by increasing the binding strength between CBN particles. Provides long, stable tool life for high-speed finishing work with cast iron, powdered metals and exotic alloys. L Acid-treated CBN Sintered Body Structure BN7000 Competitor's CBN for Cast Iron Holes formed when binder dissolved during acid treatment Few Holes Too Many Holes ■ Features ● Excellent for high-speed finishing of cast iron Excellent fracture resistance and reduced occurrence of thermal cracking in high speed machining of gray cast iron. ● High-efficiency machining of powdered metal Standard + 2 different types of edge treatment, achieving long, stable tool life in machining of powdered metal of any shape or hardness. ● Able to machine any exotic alloy Exhibits high performance for the machining of exotic alloys such as rolls, HSS, heat-resistant alloys, etc. ■ Cutting Cast Iron Milling Turning of Powdered Metal Performance 1,500 BN7000 No breakage in any of the samples BN7000 Conventional CBN 1,000 BN7000 Able to Continue Breakage 500 Conventional CBN Breakage Breakage Conventional Tool Breakage 0 500 1,000 1,500 2,000 0 25 50 75 100 Cutting Speed (m/min) No. of Workpieces (Times) Work Material: FC250 (Pearlite) Work Material: SMF4040 (70HRB, Interrupted Cutting) Tool Cat. No.: FMU4100R SNEW1203ADTR Tool Cat. No.: 2NU-CNGA120408 Cutting Conditions: vc = 500 to 2,000m/min, f = 0.2mm/rev, ap = 0.3mm Dry Cutting Conditions: vc = 250m/min, f = 0.1mm/rev, ap = 0.3mm Dry ■ Recommended Cutting Edge Treatment Cast Iron Turning Sharper Edge Poor surface roughness 0.10 LF Type Conventional CBN 0.08 BN7000 For higher 0.06 dimensional tolerance Standardwith minimal burr Chipping 0.04 Strong Edge 0.02 HS Type Frequency of Interruption Heavy 0 20 40 60 80 E W Honing Negative land width W Rake Face Cutting Distance (km) Standard 15° 0.12mm No Work Material: FC300 (Pearlite) LF Type Sharp Edge No Negative land angle R CBN Tool Cat. No.: 2NU-CNGA120408Cutting Conditions: vc = 800m/min, f = 0.15mm/rev, ap = 0.2mm Wet HS Type 25° 0.12mm Yes HoningFlank L18