A study on the electrical discharge machining of conductive ceramics
A study on the electrical discharge machining of conductive ceramics
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DOI：
10.1016/j.jmatprotec.2004.04.197
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发表时间：
2004-11-10
影响因子：
6.3
通讯作者：
Luis, CJ
中科院分区：
文献类型：
--
作者：
Puertas, I;Luis, CJ
在这项工作中，电火花加工（EDM）的三种不同的导电陶瓷进行了比较研究。在实验中使用的陶瓷是钴结合碳化钨（WC-Co），热压碳化硼（B4 C）和反应结合碳化硅（SiSiC）。本研究仅针对精加工阶段进行，选择上述导电陶瓷是因为它们的广泛应用：WC-Co的加工和采矿，B4 C的热中子吸收剂和喷嘴，SiSiC的磨损部件和热交换器等。对比研究了强度（I）、脉冲时间（t（i））和占空比（eta）等设计因素对表面粗糙度（通过R-a参数评估）、电极体积磨损（EW）和材料去除率（MRR）等响应变量的影响。这是通过实验设计（DOE）技术，沿着多元线性回归技术，使我们能够进行分析，只有少量的实验。(C)2004 Elsevier B. V.保留所有权利。
In this work, a comparative study of the electrical discharge machining (EDM) of three different conductive ceramics has been carried out. The ceramics used in the experiments were cobalt-bonded tungsten carbide (WC-Co), hot-pressed boron carbide (B4C) and reaction-bonded silicon carbide (SiSiC). This study has been done only for the finishing stages and the selection of the above-mentioned conductive ceramics was motivated by their wide range of applications: machining and mining for WC-Co, thermal-neutron absorber and nozzles for B4C and wear parts and heat exchangers for SiSiC, among others. The comparative study has been carried out on the influence of the design factors of intensity (I), pulse time (t(i)) and duty cycle (eta) over response variables such as surface roughness (evaluated through the R-a parameter), volumetric electrode wear (EW) and material removal rate (MRR). This was accomplished through the technique of design of experiments (DOE), along with multiple linear regression techniques, which allowed us to carry out the analysis with only a small number of experiments. (C) 2004 Elsevier B.V. All rights reserved.