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Cemented Carbide Inserts Wear

Cemented carbide inserts as a tool, has the following four important properties:

1) high hardness is not lowered.
2) Long-term use will not wear.
3) By the high pressure will not be deformed or cracked.
4) They can be processed into a very sharp cutting edge shape, nor bending deformation.

However, if the use or uses wrong, even if it has a superior performance cemented carbide inserts will look completely different. Special mention, the cemented carbide inserts cutting speed is very sensitive. cemented carbide inserts made ​​of the same material, if the cutting speed is different, the wear condition of a cutting edge is also different.

Cutting speed began to slowly increase from 15m/min, the tool's injury situation has changed a lot
cemented carbide inserts cemented carbide inserts cemented carbide inserts cemented carbide inserts cemented carbide inserts cemented carbide inserts

Vc=15m/min
After cutting 3min
→ initial wear
BUE stripping defect

Vc=35m/min
Afte cutting r 5min
→ chipping

Vc=60m/min
After cutting 5min
→ flank and rake face of the rectangular wear

Vc=100m/min
After cutting 3min
→Crater
Flank chipping

Vc=250m/min
After cutting 1min
→Crater
Flank chipping

Vc=400m/min
After cutting 30s
→Thermal cracking
Exception chipping

The cutting edge injury and its classification

The carbide inserts injury can be roughly divided into the following three conditions:
1) Crater, hot cracking: The main reason is the cutting temperature is too high.
2) The chipping Volume edge or gap: insufficient by the toughness of the cutter body or the machine's rotation is not smooth (with the gap between the various parts) caused.
3) Wear: the fine crumb caused by the cutting edge of a scraper loss, caused by the contact of the tool and the material to be processed.

In order to prevent and reduce these injuries, it is important to pay attention to do the following:

Crater and hot cracking, it is necessary to use high-temperature performance good containing a large amount of titanium carbide or tantalum carbide material; chipping, roll edge or notch, to strengthen the holding force of the particles in the material, then use the cobalt content of the material ; cutting edge loss, you have to increase the tungsten content.

Chinatungsten Online can provide various sizes and grades of cemented carbide cutting tools, non-standard products are also customized according to customer requirements. Welcome to consult and purchase sales@chinatungsten.com, sales@xiamentungsten.com .