Special Drill for Hard Cutting Materials

Results: HSS special drill bit to process, but the processing is very difficult, and the pass rate is very low. Of special drill can now be used in the HSS drill head plus the "H" of the micro-alloy blade, as shown.

Summary: difficult to cut materials has the result of the nature of the material difficult to process, hard cutting materials processing, cutting his way pause, hard cutting materials because of the cutting heat hardening. And then just stop place to continue drilling, the cutting edge will slip in the hardened surface; can not afford to feed force defect.