Page 23 - Heat_Exchanger_2020

Plastic Deformation

Cause
• Cutting temperature is too high
Remedy
• Check cutting parameters
• Reduce cutting feed
• Increase coolant pressure/volume
• Use harder grade
• Check that the correct geometry is used

Crater Wear
Cause
• Excessive cutting temperatures and
pressures on the top of the insert
Remedy
• Reduce cutting feed
• Check that the correct geometry is used

Thermal Cracking
Cause
• Excessive variations in surface temperature,
intermittent machining, or variations in coolant supply
Remedy
• Increase coolant pressure/volume
• Increase oil concentration percentage

Flank Wear
Cause
• High cutting speed
• Low wear resistance carbide grade
Remedy
• Check that the correct geometry is used
• Increase coolant pressure
• Change to harder grade
• Increase oil concentration percentage
• Reduce cutting speed and increase feed

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