Advanced Design Enhances Drill Bit Efficiency
Rockmore International’s new B6 drill bit
is intended to increase drilling efficiency
and reduce operating costs for hardrock
drilling and blasting in tunneling opera-tions. The bit’s new design is claimed to
prolong bit life and increase drilling pene-tration rates by incorporating enhance-ments in the bit face design and improve-ments in the configuration of cutting
geometry. Offered in 45-mm (1.75-in.)
head diameter—the most popular tunnel-ing blasthole dimension—the B6 is a but-ton bit with six large tungsten carbide
inserts on the periphery row for enhanced
rockbreaking characteristics. The inserts
are about 1 mm larger in diameter com-pared with previous models, leading to
longer bit life. The B6 also incorporates
changes in flushing design, such as place-ment of grooves and flutes designed to
effectively carry rock cuttings away from
the bit face. Multiple flutes are placed
strategically between all button inserts to
maximize the flow of the flushing medium
carrying the cuttings. Such enhancements
in the bit face flushing design, according
to Rockmore, contribute greatly to penetra-tion rates since the rock cuttings evacuate
the drilled hole more efficiently.
www.rockmore-intl.com
As featured in Womp 2012 Vol 01 - www.womp-int.com