Общий каталог Sumitomo 2018 - 2019 - страница 477

SUMIBORON Insert With Chipbreaker H Hardened Steel Break Master N-FV /-LV /-SV - Characteristics l SUMIBORON one-use insert with chipbreaker.  l N-SV type is perfect for carburised layer removal while N-FV / N-LV types are best suited to finishing of hardened steel. l Breaker included on the CBN edge, chipbreaking effect can be maintained throughout machining process. l Unique breaker design can be applied to both hardened and non-hardened parts with effective chip control. l SV type lineup now includes BNC2010 / BNC160 for good wear resistance, while SUMIBORON BNC2020 / BNC200 allows high efficiency machining. In addition to general purpose SUMIBORON BNC2020 / BNC200, the l N-FV / N-LV type lineup includes BNC2010 / BNC160 for excellent wear resistance and general purpose uncoated SUMIBORON BN2000. - Application - Cutting Carburised Layer Removal Range Performance Depth of Cut, doc (mm) breakage breakage N-SV Flank Wear Width, VB (mm) Competitor´s BNX20 0,2 CBN N-LV BNC200 0,1 N-FV 0 20 40 Feed Rate, f (mm/rev) Cutting Time (min) Cutting Speed, Vc (m/min) Work material: 42CrMo4 50 100 170 230 Insert: CNGG120408N-SV NC4 l l l l Cutting conditions: vc=100m/min, f=0,13mm/rev doc=0,4mm, x3 passes, Dry * When machining heat treated steel harder than HRC50 Stable tool life with BNC200 the depth of cut should not exceed 0,5 mm. - Application Examples External Carburised Layer Removal Carburised Face Layer Removal Break Master N-SV type improves chip control with increased productivity until the pre-set tool life. SUMI BORON Break Master N-SV Tool life = 200pcs Break Master N-SV No chip control problem No breaker No constant stopages or incorrect part dimension Constant chip control problem problem and the chips are small. BNC200 (no breaker) Tool life = 200pcs Double the tool life of competitor’s CBN No. of pcs / unit of time (relative) Work material: 42CrMo4, Carburised steel (shaft) Insert: CNGG 120408 N-SV NC4 (BNC200) Work material: 42CrMo4 (HRC30-62) Conditions: vc=150m/min, f=0,15mm/rev, Comp. CBN (no breaker) Insert: CNGG 120408 N-SV NC4 (BNC200) doc=0,5mm, x 2 passes, Wet Tool life = 100pcs Conditions: vc=140m/min, f=0,15mm/rev, doc=0,3mm, Wet L6