Каталог ZCC-CT токарная обработка - страница 283

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No.Tool wear typeSituationReasonCountermeasures
1+2Flank wearPoor surface quality and inconsistent measurement. Increase in cutting force.Grade is too soft Cutting speed is too high. Flank angle is too small. Feed rate is too lowSelect grade with higher wear resistance Reduce cutting speed Increase flank angle. Increase feed rate
3Crater wearBad surface and chip controlGrade is too soft. Cutting speed is too high. Feed rate is too high.Select grade with higher wear resistance Reduce cutting speed Reduce feed rate
4ChippingTool life not stable Sudden breakage of cutting edgeGrade is too hard. Feed rate is too high. Cutting edge strength not strong enough The rigidity of holder in insuffiecient(vibration)Select grade with higher toughness Reduce feed rate Change honing of cutting edge Use holder with bigger shank size
5FracturingCutting force increasing Surface roughness and measure becomes badi Grade is too hard. Feed rate is too high. Cutting edge strength not strong enough The rigidity of holder in insufficientSelect grade with higher toughness Reduce feed rate Change honing of cutting edge Use holder with bigger shank size
6Plastic deformationInconsistent measure meet. Damage to the cutting edgei Grade is too soft. Cutting speed is too high. Depth of cut and feed rate too high Cuttingtemperature is highGrade with high wear resistance. Reduce cutting speed Decrease depth of cut and feed rate. Grade with high thermal conductivity.
7WeldingPoor surface quality and inconsistent measurement. Increase in cutting force.Cutting speed is low. Cutting edge not sharp enough Grade not suitableIncrease cutting speed Increase rake angle. Select grade with lower affinity
8Thermal CracksBreak due to thermal variation effect often caused when cutting is interrupted.Expansion or shrinkage due to cutting heat Grade is too hard.Use dry cutting Select grade with higher toughness
9Notch wearBurr increase of Cutting force informationUnstable cutting condition (uncut surface,chilled parts, machining hardened layer) Friction caused by jagged shape chips. Feed rate and cutting speed too highGrade with high wear resistance. Increase rake angle to improve sharpness Decrease cutting speed
10FlakingMostly happens during machining of high hard materials or vibrationCutting edge welding and adhesion. Bad chip removingIncrease rake angle to improve sharpness Use chip breaker with wider chip pocket

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