Should disposable internal cooling bit drill bottom hole?
2021-08-01 22:06:14
U钻,深孔大钻头,铲钻
Should disposable internal cooling bit drill bottom hole?
It is not recommended to drill the bottom hole first for all fast u-drill, shovel drill, MDD internal cold deep hole large drill and saber tooth drill, and do not leave pre holes during casting.
These disposable bits only need to drill to the end, and there is no need to stop and stop.