Общий каталог Sumitomo 2019 - 2020 - страница 1037

SUMIBORON UncoatedCoated Cutting Speed vC(m/min)Cutting Speed vC(m/min) Cutting Speed vC(m/min) Cutting Speed vC(m/min) Dimensional ToleranceGood SUMIBORON / Coated SUMIBORON Grade Guidance CastIron CAST IRON MACHINING ● Advantages of machining cast iron with SUMIBORON Compared with conventional tools, a longer tool life for high speed machining is realized, machining efficiency is improved and better wear resistance, a sharper edge, excellent surface roughness and dimensional tolerance are achieved. SUMIBORON is ideal for finishing of gray cast iron and special cast iron through FCD (ductile cast iron) and heat-treated high-grade cast iron such as ADI. High-speed Machining High-speed Machining High-precision Machining ● Gray Cast Iron ● Ductile Cast Iron L BNS800 500 1,000 BN7000BN500 BNX10 CeramicsBNS800Coated carbide BN7000 Cermet BNC500 BNC500 500 200 Ceramics BN7000 ↓ 200 Ceramics Coated carbide Coated carbide Cermet Cermet 1 10 20 1 10 0.4 0.8 1.6 3.2 Tool Life Ratio Tool Life Ratio Good ← Surface Roughness Standard Ra (μm) Recommended Grade Grade Binder CBN Content (%) Grain Size (μm) Hardness HV (GPa) Transverse Rupture Strength (GPa) Main Coating Components Coating Thickness (μm) Features BNS800 Al Alloy 85 to 90 8 39 to 42 0.9 to 1.1 Q Q 100% solid CBN structure andexcellent thermal shock resistance. BN7000 CoCompound 90 to 95 2 41 to 44 1.8 to 1.9 Q Exhibits wear and fracture resistanceQin cutting of cast iron and exoticalloys. Grade optimised for cast iron BN500 TiC 65 to 70 6 32 to 34 1.0 to 1.1 Q Q cutting. Provides superior wear and fracture resistance. BNC500 Suitable for machining of hard-to-cut (For Ductile TiC 60 to 65 4 32 to 34 1.1 to 1.2 TiAIN 2 cast iron thanks to the highly wear- Cast Iron) resistant substrate and coating. Transverse rupture strength measured with test piece equivalent to insert CBN layer. Refer to pages L9 and L10 for machining of sintered components, rolls, hard facing alloys and heat-resistant alloys. Application Range ● Gray Cast Iron ● Ductile Cast Iron Finishing region 2,000 500 Roughing region 1,500 400 BN7000 BNC500 1,000 300 BNS800 500 BN500 200 BN7000 0 1.0 2.0 3.0 4.0 0 0.1 0.2 0.3 0.4 0.5 Depth of Cut ap (mm) Depth of Cut ap (mm) ● Special Cast Iron Work Material Hardness(HB) Work MaterialStructure Examples Cutting Speed vC (m/min)100200300350 400 500 Ni-resistant 150Cast Ironto200Austenite Piston ring BNC500 High-CrCast Iron 250to350 Austenite Pump part BNS800 FCV(CGI) 400to580 Engine blocksPearliteCylinder headsBrake discs BNC500 L7