1278 Каталог KORLOY 2020 Инструмент и оснастка для станков по металлу Стр.L18

Каталог KORLOY 2020 Инструмент для станков по металлу Стр. L18 1278 Lab2u

Turning O Trouble shooting Tool failure Cause Solution Crater wear Improper grade Excessive cutting condition Choose harder grade Decrease cutting condition FraCtUre Improper grade Excessive feed Shorten cutting edge strength Insufficient rigidity of holder Choose tougher grade Decrease feed Apply to large honed or chamfered edge Choose bigger size holder Plastic deformation Improper grade Excessive cutting condition High cutting temperature Choose harder grade Decrease cutting condition Choose grade wich heat conductivity are big Wear on nose radius (Flank wear) f L When the hardness of workpiece is too high compare with tool When machinig surface hardened workpiece Improper grade Excessive cutting speed Too small relief angle Too low feed Choose harder grade Decrease cutting speed Choose lager relief angle Increase feed Thermal crack Expansion and shrinking by cutting temperature Improper grade ( Specially milling operation) Apply to dry cutting (In case of wet cutting, use enough coolant) Choose tougher grade Chipping Improper grade Excessive feed Shorten cutting edge strength Insufficient rigidity of holder Choose tougher grade Decrease feed Apply to large honing or chamfer edge Choose bigger size holder Notch wear Surface hardened workpiece Friction due to bad chip geometry (Generate vibration) Choose harder grade Improve chip control form large rake angle Flaking Deposition on cutting edge Bad chip control Improve cutting performance fromd large rake angle Apply to chip pocket with big size Complete breakage SSI Unusable condition due to wear off the most parts of cutting edge by progress of wear Reduce the feed rate. Reduce the depth of cut. Select a tougher grade. Select a stronger chipbreaker. Select a thicker insert. Built-up edge ifr 2 Slow cutting speed Sticky materials Increase cutting speed. Use more positive rake geometry. Use tougher grade frOOOil L Technical Information 18