Tungsten carbide micro drill is used to obtain through-holes in the printed circuit board (PCB). Although more brittle than conventional high speed steel (HSS) drills, tungsten carbide bits designed specifically for PCB drilling will yield far superior hole wall quality. The downside is that, with smaller diameters, the carbide drills are easier to break and must be handled carefully.
Always wear safety glasses when you are drilling with carbide PCB drill bits. If available, always use a vacuum cleaner to remove debris and collect airborne dust during the drilling operation. The dust generated during PCB drilling can pose a very serious health hazard and should not be inhaled or ingested under any circumstances.
If there is something you need, please do not hesitate to e-mail us by sales@chinatungsten.com sales@chinatungsten.com >>>Here below are the specifications of cemented carbide buttons.
Series |
Type |
Drill point type |
Helix angle |
Point angle |
Applications |
H |
PH |
Undercut type |
30° |
130°~165° |
Glass-epoxy circuit boards, multilayered circuit boards, through-hole circuit boards etc. |
RH |
common type |
30° |
130° |
Glass-epoxy circuit boards, through-hole circuit boards etc. |
U |
PU |
Undercut type |
25° |
130° |
Glass-epoxy circuit boards, multilayered circuit boards for high-speed use. |
M |
RM |
Common type |
37° |
130° |
Paper-epoxy circuit boards, paper-phenol circuit boards, flexible circuit boards. |
D |
RD |
Common type |
35° |
140°~150° |
Glass-epoxy circuit boards, both-sided circuit boards, through-hole circuit boards. |
|
