drill steel


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drill steel

[′dril ‚stēl]
(metallurgy)
Steel with at least 0.85% carbon content made by the electric furnace process. Formerly known as crucible steel, when made by the crucible process.
References in periodicals archive ?
To complete the drill hole, a core drilling rig has re-entered the drill hole and is currently being wedged off to avoid reverse circulation drill steel that was lost at the bottom of the reverse circulation drill hole.
For drill rod, the McL-10H incorporates the use of heat treated chrome moly drill steel in standard four-foot lengths with threaded connectors to provide water and air flows to the drill head.
The standard rock drill on the MD5150C is the HPR5128, which uses 51-mm drill steel.
The system holds six rods and accommodates two lengths and multiple diameters of drill steel.
The auction will include multiple quantities of Vermeer & American Auger horizontal and directional drills, mud recycling systems, trailers, International truck tractors, flatbed-mechanics-dump trucks, 1998-2000 Ford pickup trucks, cable racks, drill steel and welders.
Many accidents have occurred when miners have come into contact with rotating drills: They tried to manually thread drill steels, unplug clogged suction hoses, or just got too close to the rotating steels when the accident occurred.
Train personnel to follow the manufacturer's procedures when adding drill steels.