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Sawing performance comparison of brazed and sintered diamond wires

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Abstract

Great attention has been paid on fabricating diamond wire by using the brazing diamond because of its strong chemical bonding strength and controllability of grits distribution. Although several serving performances of brazed diamond wire have been reported, seldom do these studies refer to its process characteristics. Sawing performances of a brazed diamond wire are investigated and compared with those of a sintered diamond wire on a wire saw machine. The surface topographies of beads selected from the two wires are micro observed before sawing. The sawing tests are carried out in constant feed rate feeding(CFF) and constant normal force feeding(CNFF). In CFF test, sawing force, power, and the cut depths of positions on contact curve are measured. Then, coupled with the observations of beads topographies, sawing force and its ratio, relations of power against material removal rate, and contact curve linearity are compared and discussed. In CNFF test, the sawing rates of the two wires are investigated. The results indicate that the brazed wire performs with lower sawing force(less 16% of tangential force and 28% of normal force), more energy efficiency(nearly one-fifth of sawing power is saved), at a higher sawing rate (the rate is doubled) and with better contact curve linearity as compared with the sintered wire. This proposed research experimentally evaluates the sawing performances of brazed diamond wire from the aspect of process parameters, which can provide a basis for popularizing the brazed diamond wire.

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Authors and Affiliations

  1. Engineering Research Center of Brittle Materials Machining of Ministry of Education, Huaqiao University, Xiamen, 361021, China

    Guoqin Huang & Xipeng Xu

Authors
  1. Guoqin Huang
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  2. Xipeng Xu
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Corresponding author

Correspondence to Guoqin Huang.

Additional information

This project is supported by National Natural Science Foundation of China(Grant Nos. 51235004, 51105148, 51175194), and Program for Changjiang Scholars and Innovative Research Team in University of China(Grant No. IRT1063)

HUANG Guoqin, born in 1981, is currently a lecturer at Huaqiao University, China. From there he received his PhD degree in 2010. His research interests include the fabrication of super-abrasive tools, high efficiency cutting, modelling, and the optimization of abrasive machining.

XU Xipeng, born in 1964, is currently a professor and a PhD candidate supervisor at Huaqiao University, China. He received his PhD degree at Nanjing University of Aeronautics and Astronautics, China, in 1992. He worked as a visiting researcher at the Grinding Research Laboratory, University of Massachusetts, United States of American, from 1998 to 1999. His research interests include machining and grinding processes for hard and brittle materials, tribology issues in machining with abrasives, and the fabrication of super-abrasive tools.

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Huang, G., Xu, X. Sawing performance comparison of brazed and sintered diamond wires. Chin. J. Mech. Eng. 26, 393–399 (2013). https://doi.org/10.3901/CJME.2013.02.393

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  • DOI: https://doi.org/10.3901/CJME.2013.02.393

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