Page 14 - ISCAR's solutions for Heavy Machining 2022

Heavy Machining
HEAVY

T
Type Of Wear And Remedyype Of Wear And Remedy

Flank Wear Crater Wear Notch Wear Chipping

possible causes: possible causes: possible causes: possible causes:
• cutting speed too high • cutting speed too high • cutting speed too high • Carbide grade too wear-resistant
• heat development too high • heat development too high • Carbide grade too low-wear • cutting edge too positive
• Carbide grade too low-wear • feed too low • formation of edge
possible remedy: possible remedy: possible remedy: possible remedy:
• reduce cutting speed • reduce cutting speed • reduce cutting speed • tougher Carbide grade
• harder Carbide grade • harder Carbide grade • harder Carbide grade • higher cutting speed
• smaller lead angle • increase feed • vary cutting depth • choice of more stable
cutting edge

Fracture Comb Cracks Built-up Edge Plastic Deformation

possible causes: possible causes: possible causes: possible causes:
• cutting edge too positive • heat alternating voltage • low cutting speed • feed too high
• Carbide grade too rigid • strongly interrupted cut • feed too low • cutting speed too high
• vibrations • thermal shock through coolant • cutting edge too negative • Carbide grade too tough

possible remedy: possible remedy: possible remedy: possible remedy:
• reduce cutting depth • choice of tougher Carbide grade • high cutting speed • reduce cutting speed
• lower feed • improved coolant supply • increase feed • reduce feed
• more stable cutting wedge • dry machining for interrupted cuts • smooth, positive cutting edge • choice of harder Carbide grade

14 ISCAR