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← TechnologyWhich mode of tool wear accelerates in a CNC lathe when cutting hardened steel at excessive speeds?
A)Adhesive wear dominates abruptly✓
B)Abrasive wear increases gradually
C)Diffusion dulling becomes stable
D)Chipping evenly distributes randomly
💡 Explanation
Adhesive wear increases on CNC lathes during hardened steel cutting because localized welding occurs between the tool and workpiece at high friction surfaces, therefore creating tool removal, rather than gradual abrasive wear at normal speeds.
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