Carbide Troubleshooting

Turning

Problem Solution
  Reduce Cutting Speed Increase Cutting Speed Reduce The Feed Increase the Feed Reduce The Cutting Depth Increase The Cutting Depth Select a Tougher Grade Select a Smaller Nose Radius Select A Positive Geometry
Flank Wear X                
Notch Wear X                
Cratering X   X           X
Plastic Deformation X   X            
Built Up Edge   X             X
Small Cracks perpendicular to the cutting edge             X    
Small Cutting Edge Fracture (frittering)   X         X   X
Insert breakage     X   X   X    
Curling of Long Chips       X   X   X  
Vibrations X     X       X X

Milling

Problem Solution
  Reduce Cutting Speed Increase Cutting Speed Reduce Feed/Tooth Increase Feed/Tooth Select a more wear resistant grade Select a tougher grade Use a course pitch cutter Change the cutter position Do not use coolant
Flank Wear X     X X        
Notch Wear X     X X       X
Cratering X       X        
Plastic Deformation X   X   X        
Built Up Edge   X   X         X
Small Cracks perpendicular to the cutting edge X         X     X
Small Cutting Edge Fracture (frittering)   X       X     X
Insert breakage     X     X   X  
Vibration       X     X X  
Bad Surface Finish   X X   X        

Formulas

Cutting Speed, ft/min.

VC = (Pi * Dc * n)/12

Where

VC = cutting speed ft.min

n = revolutions/Min.

Dc = diameter inch