Small-size downhole air drill hammers of increased capacity

The authors review key approaches to designing small-size air drill hammers. The approach to increasing impact capacity of air drill hammers by means of buildup of blow frequency is substantiated. The experimentally obtained and compared characteristics of air drill hammers equipped with the heads m...

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Bibliographic Details
Published in:Journal of mining science 2016-11, Vol.52 (6), p.1122-1128
Main Authors: Repin, A. A., Timonin, V. V., Alekseev, S. E., Kokoulin, D. I., Popelyukh, A. I.
Format: Article
Language:English
Subjects:
Air
Capacity
Drills
Earth and Environmental Science
Earth Sciences
Feasibility studies
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Hammers
Hardness (Materials)
Heat treatment
Laboratory tests
Low density materials
Machinery
Mineral Resources
Science of Mining Machines
Steel
Titanium
Titanium alloys
Titanium base alloys
Tool steels
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Summary:The authors review key approaches to designing small-size air drill hammers. The approach to increasing impact capacity of air drill hammers by means of buildup of blow frequency is substantiated. The experimentally obtained and compared characteristics of air drill hammers equipped with the heads made of steel and titanium prove feasibility of increasing impact capacity by means of using low density materials. The technology of thermal treatment of a titanium-alloy hammer head is described, and its laboratory testing results are reported.
ISSN:1062-7391
1573-8736
DOI:10.1134/S1062739116061650