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Effects of Organic Additives on Impregnated Diamond Drilling.

Authors
Strebig-KC; Selim-AA; Schultz-CW
Source
NTIS: PB 198 826 :31 pages
Link
NIOSHTIC No.
10001743
Abstract
The effect of some organic additives in diamond drilling of quartzite was investigated in the laboratory with a drill instrumented to measure the rate of penetration, the thrust, and the torque and to record each as a function of the distance drilled. A statistical plan was followed throughout the investigation, and an equation representing the bit performance was derived from the mathematical theory of reliability. The coefficient of friction in drilling increased with the use of additives, although the wear coefficient decreased. The decrease in wear associated with an increase in energy per unit volume consumed and the increase in penetration rate resulted in a net decrease in the cost per foot of drilling. A hypothesis explaining the effects achieved with the additives is given.
Publication Date
19710101
Document Type
IH; Report of Investigations
Fiscal Year
1971
NTIS Accession No.
PB-198826
NTIS Price
A04
Identifying No.
RI 7494
NIOSH Division
TCRC;
Source Name
NTIS: PB 198 826
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