Welcome: Guangzhou CN CNC Tools Co., Ltd
   Home  >  BLOGS

News

Causes and Treatment of Carbide Inserts in Cutting Processes

In order to achieve better quality cutting and the longest possible tool life, it is necessary to inspect the inserts after machining, summarize the causes of the different forms of insert wear and find a solution, which is the basis for successful milling.


Rear cutter face wear 1


Rapid wear results in poor surface quality or out of tolerance.

In order to achieve better quality cutting and the longest possible tool life, it is necessary to inspect the inserts after machining, summarize the causes of the different forms of insert wear and find a solution, which is the basis for successful milling.


Rear cutter face wear 1


Rapid wear results in poor surface quality or out of tolerance.




cause

Excessive cutting speed

Insufficient wear resistance

Feed fz too low



solutions

Reduce cutting speed (vc)

Choose a material with higher abrasion resistance

Increased feed (fz)


Rear cutter face wear 2

Excessive wear leads to short tool life.



cause

vibration

Chip Re-cutting


Burr formation on parts

Poor surface quality

generate heat



solutions

Increased feed (fz)


Adopt Shunting

Efficient chip removal with compressed air

Check the recommended cutting parameters



Rear cutter face wear 3

Uneven wear leads to damage to the sharp corners.



cause

Tool runout


vibration

Short tool life

Poor surface quality

loud noise

High radial force



solutions

Reduce runout to less than 0.02 mm

Check collets and jackets

Minimized tool protrusion

Use fewer teeth for cutting

Choose a larger tool diameter

For solid carbide end mills and indexable insert mills, choose a groove with a higher helix angle (gp ≥ 45°).

Dividing the axial depth of cut (ap) into multiple passes

Reduced feed (fz)

Reduce cutting speed (vc)

High-speed machining requires shallow tool paths

Improved clamping of tools and workpieces


crescent-shaped pits

Excessive wear results in reduced cutting edge strength. Poor surface quality due to broken cutting edges.




ause

Diffusion wear due to high cutting temperatures on the front cutter face.


solutions

Choosing an alumina coating material

Selected positive-angle blade grooves

Decrease speed for lower temperatures, then decrease feed.



plastic deformation

Plastic deformation of the cutting edge, collapse or depression of the rear face of the tool, resulting in poor chip control, poor surface quality and broken inserts.


cause

High cutting temperatures and pressures


solutions

Choose a material with higher abrasion resistance (higher hardness)

Reduce cutting speed (vc)

Reduced feed (fz)


Avalanche 1

The portion of the cutting edge not involved in the cut is damaged by chip hammering. Damage to the front and support surfaces of the blade, resulting in poor surface texture and excessive wear on the back of the blade.


cause

The chips are squeezed by the action of the cutting edge.


solutions

Choose a more resilient grade

Choose inserts with stronger cutting edges

Increased cutting speed vc

Choosing a Positive Front Angle Groove

Reduced feed at the beginning of the cut

Improved stability


Avalanche 2

A small portion of the cutting edge is fractured (chipped) resulting in poor surface quality and excessive wear on the rear face.


cause

Material too low tough

Weak blade grooves

chip



solutions

Choose a more resilient grade

Choose a blade with a more robust groove

Increase cutting speed vc, or choose a positive rake profile.

Reduced feed at the beginning of the cut



CATEGORIES

CONTACT US

Contact: Jacky Wang

Phone: +86 14714816052

Tel: +86 14714816052

Email: [email protected]

Add: Floor 1, Shixi Industrial area, Canton, Guangdong, China. 510288

Scan the qr codeClose
the qr code