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首页> 外文期刊>The International Journal of Advanced Manufacturing Technology >Experimental research on electrical discharge machining characteristics of engineering ceramics with different electrical resistivities
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Experimental research on electrical discharge machining characteristics of engineering ceramics with different electrical resistivities

机译：不同电阻率工程陶瓷放电加工特性的实验研究

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摘要

Electrical discharge machining (EDM) is the extensively used nonconventional material removal process for machining engineering ceramics provided they are electrically conductive. However, the electrical resistivity of the popular engineering ceramics is higher, and there has been no research on the relationship between the EDM parameters and the electrical resistivity of the engineering ceramics that can be machined effectively by EDM. This paper investigates the effects of the electrical resistivity and the EDM parameters on the EDM performance of ZnO/Al2O3 ceramic in terms of the machining efficiency and the quality. The experimental results showed that the electrical resistivity and the EDM parameters such as pulse on-time, pulse off-time, and peak current had the great influence on the machining efficiency and the quality during electrical discharge machining of ZnO/Al2O3 ceramic. Moreover, the electrical resistivity of the ZnO/Al2O3 ceramic, which could be effectively machined by EDM, increased with increasing the pulse on-time and peak current and with decreasing the pulse off-time, respectively. Furthermore, the ZnO/Al2O3 ceramic with the electrical resistivity up to 3,410 Omega cm could be effectively machined by EDM with the appropriate machining condition.
机译：放电加工（EDM）是被广泛使用的非常规材料去除工艺，用于加工工程陶瓷，只要它们具有导电性。然而，流行的工程陶瓷的电阻率较高，并且尚未研究EDM参数与可被EDM有效加工的工程陶瓷的电阻率之间的关系。从加工效率和质量的角度研究了电阻率和电火花加工参数对ZnO / Al2O3陶瓷电火花加工性能的影响。实验结果表明，ZnO / Al2O3陶瓷的放电加工过程中，电阻率和电火花加工参数（如脉冲导通时间，脉冲截止时间和峰值电流）对加工效率和质量有很大影响。此外，可以通过EDM有效加工的ZnO / Al2O3陶瓷的电阻率分别随着脉冲接通时间和峰值电流的增加以及脉冲断开时间的减少而增加。此外，在适当的加工条件下，可通过EDM有效加工电阻率高达3,410Ωcm的ZnO / Al2O3陶瓷。

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