Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Investigation of optimizing traverse speed of water-jet assist drag picks.

Authors
Evans RJ; Handewith HJ; Taylor CD
Source
Water-jet-assisted cutting. Proceedings: Bureau of Mines Open Industry Meeting, Pittsburgh, Pennsylvania, June 21, 1984.Taylor CD; Evans RJ, eds. Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC 9045, 1985 Jan; :69-76
Link
NIOSHTIC No.
10003277
Abstract
A cutterhead was designed and fabricated at the Bureau of Mines Pittsburgh Research Center to evaluate the rock weakening effect, when using waterjet-assisted cutting, that may result from increased travel speed using moderate-pressure jets (3,000 to 9,000 psi). Two pick types, conical and flat, were analyzed for speeds ranging from 30 to 300 ft/min. The objective was to establish traverse speed threshold levels that are necessary to maintain the optimum reduction in cutting tool forces. In addition, measurements were taken to measure dust reduction when using water-jet assist. Results indicate that when employing water-jet-assisted cutting, only a negligible reduction in the rock weakening effect was observed at higher speeds. As an added benefit, significant dust reduction was evident when employing water-jet-assisted cutting.
Keywords
Hydraulic jets; Underground mining; Rotary drill bits; Cutting tools; Jet drills; Mining industry; Drilling; Mining equipment
Publication Date
19850101
Document Type
IH; Conference/Symposia Proceedings
Editors
Taylor CD; Evans RJ
Fiscal Year
1985
NTIS Accession No.
NTIS Price
NIOSH Division
PRC
Source Name
Water-jet-assisted cutting. Proceedings: Bureau of Mines Open Industry Meeting, Pittsburgh, Pennsylvania, June 21, 1984
State
PA
TOP