Общий каталог Sumitomo 2018 - 2019 - страница 490

K PM Cast Iron and Sintered Compoment Uncoated SUMIBORON BN7000 Uncoated CBN grade for high-speed finishing of cast iron, powdered metals, and difficult-to-machine materials! - 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 stable, long tool life for high-speed finishing work with cast iron, powdered metals, and difficult-to-machine materials. Acid-treated CBN Sintered Body Structure BN7000 Competitor's CBN Holes made by the binder melting from the acid treatment. Few Holes Many Holes - Characteristics l Excellent for high speed finishing of Cast Iron! Good wear and fracture resistance in high speed machining of Grey Cast Iron. l High efficiency machining of powdered metal With 4 different types of edge treatment, stable and long tool life can be achieved from machining of Sintered Alloys of any shape or hardness. l Able to machine any Exotic Metals. Long tool life can also be achieved for the machining of exotic materials such as Roll, HSS and Heat-Resistive Alloy etc. - Cutting Cast Iron Milling Turning of Powdered Metal Performance 1.500 BN7000 Chip Removal Rate (cm3) BN7000 1.000 Previous CBN BN7000 able to No chipping in any of the samples! continue Breakage 500 Previous Breakage CBN Conventional Tool Breakage Breakage 0 500 1.000 1.500 2.000 0 25 50 75 100 Cutting Speed (m/min) Output (Times) Work material: GG25 (Pearlite) Work material: Sintered ferrous alloy, SMF4040 equivalent Insert (Cutter): SNEW 1203 ADTR, (FMU 4100 R) (HRB70, Interrupted Machining) Cutting data: vc = 500 ~ 2.000 m/min, f = 0,2 mm/rev Insert type: CNGA 120408 doc = 0,3 mm, Wet Cutting data: vc = 250 m/min, f = 0,1 mm/rev, doc = 0,3 mm, Wet - Recommended Edge Treatment SUMI BORON Cast Iron Turning LF High Type 0,10 Previous CBN Flank Wear Width (mm) Cutting Action 0,08 BN7000 ”Standard” ( General Purpose ) 0,06 Strong cutting edge 0,04 HS Type 0,02 Interruption degree Frequent 0 20 40 60 80 Negative Land Cutting Length (m) α w r Work material: GG30 (Pearlite) Standard 15° 0,12 No Insert type: CNGA 120408 NU-2 LF type – – No Cutting data: vc = 800 m/min, f = 0,15 mm/rev, doc = 0,2 mm, Wet HS type 25° 0,12 Yes Round honed cutting edge L19