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    Volume 8, Issue 1

    Experimental Investigations of Drilling Silicon Carbide Using Brazed Diamond Tools

    (Received 28 December 2018; accepted 21 May 2019)

    CODEN: MPCACD

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    Abstract

    This article mainly studied the machining efficiency and service life of a brazed diamond tool for drilling silicon carbide (SiC). Firstly, the influence of process parameters (spindle speed [ss], axial pressure [ap], feed rate [fr]) on the drilling efficiency was researched. Then, the orthogonal analysis was carried out to study the influence of tool structural parameters (wall thickness of tools [wtt], diamond grit size [dgs], working layer thickness [wlt], and outer diameter of tools [odt]) on the drilling efficiency and tool life. Eventually the effects of solder composition on the drilling performance were investigated. The results show the following: (1) the optimal drilling efficiency can be obtained under the condition of ss of 83π rad/s, ap of 800 N, and fr of 4/100π mm/rad. (2) The influence degree of tool structure on the drilling performance is wtt > dgs > wlt > odt; the optimal tool structural parameters are wtt of 1 mm, dgs of 250 μm, odt of 10 mm, and wlt of 0.8 mm. (3) For SiC ceramics prepared by hot pressing and hot isostatic pressure sintering, diamond tools with nickel-chromium alloy solder should be chosen; whereas for SiC ceramics prepared by pressure-free and reactive sintering, diamond tools with copper-based solder should be chosen.

    Author Information:

    Gao, Chao
    Department of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu

    Liu, Guangzhao
    Department of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu

    Wang, Hui
    Department of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu


    Stock #: MPC20180190

    ISSN:2379-1365

    DOI: 10.1520/MPC20180190

    Author
    Title Experimental Investigations of Drilling Silicon Carbide Using Brazed Diamond Tools
    Symposium ,
    Committee C28