Rock drill

Details Rock drill Rock drill

1998-03-13

2000-03-21

Tsay, Frank

Boring or penetrating the earth

Processes

175425, 175433, E21B 1046

Patent

active

060391278

ABSTRACT:
A rock drilling bit for drilling bores in rock, more particularly to a percussion rock drilling bit. Specifically, a rock drilling bit having hard material cutting inserts affixed to an austempered ductile iron (ADI) drill body, and a method of drilling rock using said bit.

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