Sinking EDM in water-in-oil emulsion

被引：53
|
作者：
Zhang, Yanzhen [1 ]
Liu, Yonghong [1 ]
Ji, Renjie [1 ]
Cai, Baoping [1 ]
Shen, Yang [1 ]
机构：
[1] China Univ Petr, Sch Mech & Elect Engn, Dongying 257061, Shandong, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2013年 / 65卷 / 5-8期
关键词：
Electric discharge machining; Sinking; Dielectric; Water in oil; Emulsion; ELECTRODE WEAR RATIO; DISCHARGE;
D O I：
10.1007/s00170-012-4210-4
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper, a new type of sinking electric discharge machining (EDM) dielectric-water-in-oil (W/O) emulsion is proposed, and the machining characteristics of W/O emulsion are investigated by comparing with that of kerosene. In the experiments, machining parameters such as the dielectric type, peak current, and pulse duration are changed to explore their effects on machining performance, including the material removal rate (MRR), relative electrode wear rate (REWR), and surface roughness. Experimental results revealed that W/O emulsion could be used as the dielectric fluid of sinking EDM and adopting long pulse duration and large peak current could lead to obtaining higher MRR than kerosene. Compared with kerosene, W/O emulsion is observed to cause lower carbon adhered to the electrode surface. Therefore, its REWR is higher. Statistics of the discharge waveform show that more stable discharge processes can be obtained by using W/O emulsion compared with kerosene. Furthermore, W/O emulsion is more economical and more environmentally friendly than kerosene, and it could be an alternative to kerosene in sinking EDM application.
引用
收藏
页码：705 / 716
页数：12
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