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Drilling Technology

Fundamentals and Recent Advances

Ed. by Davim, J. Paulo

Series:Advanced Mechanical Engineering

eBook (PDF)
Publication Date:
October 2018
Copyright year:
2018
ISBN
978-3-11-048120-4
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1. Efficient drilling of high-silicon aluminum alloys

Astakhov, Viktor P. / Patel, Swapnil

Abstract

This chapter presents the most important features of high-penetration rate (HPR) drilling of high-silicon aluminum alloys (HSAA). It explains a necessity of implementation of HPR tools and well-designed machining operations that has become possible due to development of a number of new tool materials and coatings, new cutting inserts and tool designs, new tool holders, powerful precision machines, part fixtures, advanced controllers and so on. As the penetration rate is the product of the tool’s (workpiece) rotational speed and cutting feed, the major constraints of these two parameters are considered and a number of practical recommendation for increasing the penetration rate are made as the first level of the analysis. At the second level of the analysis, the correlations between the chemical composition and physical properties of HSAA and drilling tool/process parameters are explained. As HSAA are die casting alloys, the casting defect and their influence on tool performance are analyzed. It is pointed out that polycrystalline diamond (PCD) is a material of choice for HPR drilling tools for HSAA. The common problems with the existing PCD drilling tool are analyzed and the basic design of a cross-PCD drill is suggested.

Citation Information

Viktor P. Astakhov, Swapnil Patel (2018). 1. Efficient drilling of high-silicon aluminum alloys. In J. Paulo Davim (Editor), Drilling Technology: Fundamentals and Recent Advances (pp. 1–36). Berlin, Boston: De Gruyter. https://doi.org/10.1515/9783110481204-001

Book DOI: https://doi.org/10.1515/9783110481204

Online ISBN: 9783110481204

© 2018 Walter de Gruyter GmbH, Berlin/Munich/BostonGet Permission

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