dry drilling

dry drilling

[¦drī ′dril·iŋ]
(mining engineering)
Drilling in which chippings and cuttings are lifted out of a borehole by a current of air or gas.
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References in periodicals archive ?
Besides drilling H8 with cpk higher than 1.7, the dry drilling is one other important goal for aerospace assembly ever since.
An experimental investigation of the effect of coatings and cutting parameters on the dry drilling performance of aluminium alloys; Int.
Investigation of the effect of drilling conditions on the twist drill temperature during step-by-step and continuous dry drilling. Mater.
The Results of the confirmation test is compared with the dry drilling operation to prove, better values can be obtained by using vegetable based cutting fluid.
End of September -- The SCA declared the end of 25% of dry drilling in theNew Suez Canal.
The realization that dust generated by mechanized dry drilling is a major health hazard took a further 50 years or so to materialize, but from then on, through the first half of the 20th century, pneumatic drilling was king.
"Dry drilling of rock is not something that anybody on Earth wishes to do," says Farley.
Dry drilling of a high variety of aeronautical NMMC's based workpieces have been widely studied by a considerable number of researchers, not only by conventional drilling [1-5] but also by non-traditional drilling processes such as abrasive waterjet machining (AWJM) and laser drilling [6,7].
In particular the dry drilling in aluminium plates and more specifically in UNS A97050-T7 and UNS A92024-T3 constitutes a usual operation in the forming of some structural parts (Nouari et al., 2005; Kurt et al., 2008).
This single-speed model excels in wet drilling applications up to three inches in diameter or it can be used with STOW's Cobra dry drilling bits up to five inches in diameter.
"A lot of drilling technology operates on hydraulic pressure and since you can't bring water to Mars, dry drilling techniques are essential," says Lavallee.
Dry drilling is not recommended under these cutting conditions; use insert grade ACZ310, and reduce cutting speed.