Брошюра Dormer Pramet новинки 2021 - страница 68

T8430 NEW GENERATION PVD GRADE TURNING INSERTS INTRODUCTION We have upgraded our flagship PVD grade T8330 with a new coating generation, providing increased durability and performance. The T8430 is the most versatile grade for general turning and heavy roughing, even in unfavourable conditions. Developed for steel and cast steel, the grade also performs well in stainless steel, cast-iron and super alloys. It offers a significant increase in durability compared with the existing grade, especially when machining raw steel blanks or difficult-to-machine materials, such as Inconel and Stellite. FEATURES & BENEFITS • A multi-layered PVD coating optimized for increased • Thick TiN coating with low compressive stress for productivity, with up to 69% more durability crater wear resistance. compared to T8330. • Hard AlTiN layer for flank wear resistance. • Unique Titanium-Boron-Nitride (TiBN) top layerfor build-up edge reduction and improved• A bright gold TiN layer to support wear detection. performance. MACHINING EXAMPLE Material: C45 Material group: P2.2 Unique TiBNlayer Insert: CNMG120408E-FMCoolant:No Thick TiN coating Grade T8430 T8330 Cutting speed vc m/min 170 170 Feed tooth fz mm/tooth 0,35 0,35 Hard AlTiNlayer Axial length of cut ap mm 2,0 2,0 Durability T min 21,0 12,5 T8430 T8330 after 21 min after 12,5 min AREA OF APPLICATION PVD TURNING GRADES 25 20 169 % T8315 15 T8430 10 100 % T8330 T8345 5 0 Toughness T8430 T8330 67 Wear resistance Durability [min]