Общий каталог Sumitomo 2019 - 2020 - страница 1039

SUMIBORON Surface Roughness Rz( μ m) Cutting Speed vc (m/min) Cutting Speed vc (m/min) Flank Wear Width (mm) Maximum height of burr (mm) SUMIBORON / Coated SUMIBORON Grade Guidance Sintered Alloy SINTERED COMPONENT MACHINING ● Advantages of cutting sintered components with SUMIBORON SUMIBORON has much smaller edge wear than carbide or cermet, and also has better wear resistance and can form a sharp edge easily. SUMIBORON is able to prevent burrs and chipping on the edges of the workpiece, achieving good machining precision and surface roughness. Sintered Components Recommended Grade ● General Powdered Metal ● High-Density/Sintered Powdered Metal L General Powdered Metal (50-90HRB) High-density Sintered Powdered Metal (30 to 65 HRC) Finishing region Roughing region300 Finishing300region Roughing region 200 200 BN7500 100 BN7000 100 BN7500 BN7000 Depth of Cut ap (mm) 0 0.1 0.2 0.3 0.4 0.5 Depth of Cut ap (mm) 0 0.1 0.2 0.3 0.4 0.5 Feed Rate f (mm/rev) 0.05 0.1 0.15 0.2 0.25 0.3 Feed Rate f (mm/rev) 0.05 0.1 0.15 0.2 0.25 0.3 Grade Binder CBN Content (%) Grain Size (μm) Hardness HV (GPa) Transverse Rupture Strength (GPa) Main Coating Components Coating Thickness (μm) Features BN7500 CoCompound 90 to 95 1 41 to 44 2.0 to 2.1 Q Maintains ultimate cutting edgeQsharpness. Suitable for finishing ofpowdered metal. BN7000 CoCompound 90 to 95 2 41 to 44 1.8 to 1.9 Q Grade exhibiting improved wear andQfracture resistance in roughing ofsintered materials. Transverse rupture strength measured with test piece equivalent to insert CBN layer Performance ● Grade Performance Comparison Carbide12■■Carbide0.5■ 0.7 D 10 ■ 0.4 0.6 D Cermet D0.5D 8 D D SUMIBORON6DDD4DDD2Cermet 0.3 Cermet0.2D0.1DDDSUMIBORON■D■DDD 0.40.3 Carbide0.20.1■D■D D■ DSUMIBORON 0 50 100 150 200 0 50 100 150 200 0 50 100 150 200 Cutting Speed vC (m/min) Cutting Speed vC (m/min) Cutting Speed vC (m/min) Work Material: SMF4040 equivalent For general powdered metal, carbide and cermet grades can perform up to vc = 100m/min. However, Machining Details: ø80-ø100 heavy interrupted facing with grooves and drilled holes (after 40 passes) around vc = 120m/min, wear becomes rapid and surface roughness deteriorates with increased burrs. On Tool Cat. No.: TNGA160404 the other hand, SUMIBORON exhibits stability and superior wear resistance, burr prevention and surface Cutting Conditions: f = 0.1mm/rev, ap = 0.1mm Wet roughness, especially at high speeds. Valve Seat Ring (VSR) *VSR has both (Intake: IN) and (Exhaust: EX) with the exhaust generally being hardened. Recommended Grade Recommended Cutting Conditions ● Recommended Grade by Machining Details Gasoline VSR material Diesel VSR material Cutting Speed Feed Rate Depth of Cut Plunge cut BN7000BN7500 BN350 BN7000BN7500 BN350 vc(m/min) f (mm/rev) ap(mm) 50 to 125 0.03 to 0.2 0.05 to 0.5 Traverse cut BN7000BN7500 BN500 BN7000BN7500 BN500 Workpiece Hardness (HV) Low 300HV High Low 300HV High Application Examples With superior fracture resistance, the BN7000 can achieve double our competitors' tool life BN7000 3,200 holes Work Material: Powdered Metal (150 to 250 HV) Competitor's 800 holes Machining Details: VSR(IN) 45° Surface FinishingTool Cat. No.: TBGN060104B CBN Cutting Conditions: vc=100m/min, f =0.08mm/rev Wet L9