Общий каталог Sumitomo 2019 - 2020 - страница 12

Insert GradesSteelStainlessSteelCast IronExotic AlloyHardene dNon-FerrousSteelMetalFor SmallLathes Work Material Feed Rate f (mm)Feed Rate f (mm) Chipbreaker and Grade Selection Guide for Turning Steel Steel Grades AC8015P / AC8025P / AC8035P / AC1030U Covers a wide range of machining applications from high-speed to interrupted cutting and small lathes AC8015P : Development of crater damage is suppressed by controlling the orientation of the alumina crystal grains. Achieves long, stable tool life during high-speed and high feed cutting. AC8025P : Our 1st recommended grade for turning steel. Surface smoothing technology significantly suppresses adhesion of work material components. Achieves long, stable tool life with various cutting speeds and work materials. AC8035P : Tensile stress removal of the coating layer greatly improves fracture resistance. Achieves long, stable tool life during heavy interrupted cutting. AC1030U : Employs a new PVD coating, and a dedicated tough carbide substrate. High-quality cutting edge grade suppresses adhesion and micro-chipping, realizing excellent machined surface quality. A Performance AC8015P ● Alumina crystal grain orientation control technology suppresses crater damage due to chip abrasion Conventional Tool 5min 14min Al2O3 TiCN TiCN layer exposed Tool life Crater damage progression due to Crystal orientation not aligned Work Material: SUJ2 (O.D. Continuous) Insert: CNMG120408N-GUCutting Conditions: vc=300m/min, f=0.3mm/rev, ap=1.5mm Wetpeeling of alumina layer AC8015P 5min 17min 29min Al2O3 TiCN Crystal orientations aligned in the same direction Minor Wear TiCN layer exposed Tool life Significantly suppresses alumina layer damage Suppresses crater damage due to chip abrasion Twice the crater wear resistance AC8025P ● Surface smoothing treatment significantly suppresses adhesion and chipping Conventional Tool 2min 70min SEM image Adhesion Breakage Unable to Continue Work Material: SCM415 (Face) Insert: CNMG120408N-GU Ra 0.4μm Cutting Conditions: vc=100-300m/min, f=0.3mm/rev, ap=1.5mm Wet AC8025P 2min 70min 120min SEM image Normal Wear Minor Damage Only, Able to Continue Ra 0.04μm Suppresses adhesion with ultra-smooth surface At least twice the adhesion/fracture resistance AC8035P ● Special surface treatment reduces tensile stress in the coating layer, significantly suppressing breakages Conventional Tool 0.20 SEM image 0.25 0.30 0 0.1 0.2 0.3 0 250 500 Tensile stress in coating (GPa) No. of Impacts Unable to Continue Work Material: SCM435 (O.D. Interrupted) Insert: CNMG120408N-GU Cutting Conditions: vc=160m/min, f=0.2-0.3mm/rev, ap=2.0mm Dry AC8035P SEM image 0.20 Tensile Stress 0.25 90% Reduced 0.30 0 0.1 0.2 0.3 0 250 500 Tensile stress in coating (GPa) No. of Impacts All Corners Able to Continue Suppresses crack growth and breakages by reducing tensile residual stress At least twice the fracture resistance A12