The study of high speed micro-drilling performance and machining quality of coated micro-drills with Zr-C:H coatings

W. H. Kao, Y. L. Su, S. H. Yao, H. C. Huang, M. S. Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The Zr-C:H coatings with various C2H2 flow rate were deposited on micro-drills (a diameter of 0.2 mm) used a closed field unbalanced magnetron sputtering system. The ultrahigh speed (drilling speed of 160000 rpm) through-hole drilling printed circuit board tests used to evaluate the drilling performance of the coated micro-drills. The rejection criteria of service lives of the coated micro-drills were evaluated using two different criteria: (1) a nail head ratio greater than 1.5; (2) a drilled hole surface roughness greater than 25.4 μm. Adopting a service life criterion of a nail head ratio of 1.5, the Zr-C:H-5 coating possesses the optimal high-speed machining performance, which yields a micro-drill lifetime of above 6000 drilled holes. It represents a three-fold improvement on that of an uncoated micro-drill and it also improves machining quality.

Original languageEnglish
Title of host publicationManufacturing Engineering and Automation II
Pages342-346
Number of pages5
DOIs
Publication statusPublished - 2012 Dec 19
Event2012 International Conference on Manufacturing Engineering and Automation, ICMEA 2012 - Guangzhou, China
Duration: 2012 Nov 162012 Nov 18

Publication series

NameAdvanced Materials Research
Volume591-593
ISSN (Print)1022-6680

Other

Other2012 International Conference on Manufacturing Engineering and Automation, ICMEA 2012
CountryChina
CityGuangzhou
Period12-11-1612-11-18

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Kao, W. H., Su, Y. L., Yao, S. H., Huang, H. C., & Chen, M. S. (2012). The study of high speed micro-drilling performance and machining quality of coated micro-drills with Zr-C:H coatings. In Manufacturing Engineering and Automation II (pp. 342-346). (Advanced Materials Research; Vol. 591-593). https://doi.org/10.4028/www.scientific.net/AMR.591-593.342