The Effects of Resharpening Accuracy on Drill Failure and Hole Straightness in High Aspect Ratio Gundrilling of Inconel-718

Keng Soon Woon; Shigeyuki Kanno; Kui Liu

doi:10.4028/www.scientific.net/AMR.565.388

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 565The Effects of Resharpening Accuracy on Drill...

The Effects of Resharpening Accuracy on Drill Failure and Hole Straightness in High Aspect Ratio Gundrilling of Inconel-718

Abstract:

This paper presents a pilot study on the consistency of high aspect ratio gundrilling of Inconel-718 that involves the drilling of three holes of 8mm in diameter and 1600mm in depth, under constant drilling conditions. But high degree of straightness variations among these holes indicates that critical drill geometries could not be accurately regenerated through the drill resharpening operation. As a result, vast variability is introduced to the process which has severe detrimental effects on the stability of the drilling process and degradation and failure modes of the drill as well the straightness accuracy of the holes.

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Periodical:

Advanced Materials Research (Volume 565)

Pages:

388-393

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.565.388

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Online since:

September 2012

Authors:

Keng Soon Woon, Shigeyuki Kanno, Kui Liu

Keywords:

Deep Hole Drilling, Nickel-Chromium-Based Superalloys, Oil Field Equipment

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