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High-Performance Solid Cermet Endmills High-Performance Solid Cermet Endmills Application Information HI Wear Indication • Nickel - based high - temperature alloys . • Cobalt - based alloys after consulting technical assistance . Materials to cut • P 6 and M 1 - 3 stainless steels after consulting technical assistance. New Used End of Tool Life • Do not apply on iron - based high - temperature alloys . Cutting Speed • Maximum RPM machine can provide recommended cutting speed : 250-1000 m / min . • Highly dynamic machines recommended . \ / • Use of spindle speeders applicable ( no wet coolant ) . • Referto cutting data recommendation . / \ Feed Rate • General starting condition fz 0 , 03 mm / z. Wear rate 0.48 mm Wear rate 1 4 mm ,, still good to use End of tool life reached • Referto cutting data recommendation . Depth of cut • General starting condition ap 0 , 5 mm . Causes of and Remedies for End Milling Problems problem cause cause remedy •Power cool nozzle preferred to flush chips away. • Pressurised air applicable . Coolant • Minimal Quantity Lubrication ( MQL ) and dry applicable . • No coolant with emulsion or oil due to thermal shock . • Use undersize end mills that leave stock for Excessive burr • Softness of material to cut . finishing operation . formation • Excessive wear on radii . • Replace tool as end of tool life reached . •Hydraulic chuck with or without sleeve preferred . • Check tool runout . 241 242 • Collet or milling power chucks applicable . Adaptation • Balancing at 25 , 000 RPM ( 2 , 5 G ) preferred . • Shrink adaptation not recommended. • Vibration of the workpiece . Sudden breakage • Unstable tool clamping . • Check workpiece and tool clamping. • Use of 4 - flute EADE recommended . • Use of 6 - flute tooling in slotting . Roughing Appliaction Yes Finishing Application Yes Chips sticking • Lack of cutting speed . • Increase cutting speed . • Conventional milling preferred at lower speeds . Milling Strategy • Check workpiece and tool clamping . • Climb milling preferred at higher speeds . • Unstable tool and / or workpiece clamping . Chipping • Reduce cutting speed during initial cut and • Initial cutting speed too high . increase as cutting continues . • Slotting and pocketing . • Common sizes and undersize leaving finishing stock . 2 and 4 - Flute • Side milling possible up to ap max with increased feed . • Non - centre cutting . • Ramping and helical interpolation possible under 2.5 ° . Thermal cracks • Wet coolant . • Do not use wet coolant . • Profiling and face milling . • Non - centre cutting . Ball Nose • Side milling possible up to a p max with increased feed . • Ramping and helical interpolation possible under 2 ° .