Owner's manual
Quality issues in CFRP
Quality is not easily assessed:•
- there is no chip to look at
- roughness measurement is not signicant
- damage can be not visible (delamination)
The main indicator is the hole quality •
(and tool conditions)
Delamination•
- Separation of the bottom layer(s) due to the “thrust” of the drill
Splintering•
- Residual bres in the interior of the hole, due to poor cutting action
Delamination
Splintering/fraying
Tool wear on cutting edge
SANDVIK COROMANT USER’S GUIDE - COMPOSITE SOLUTIONS 23