我想找一篇关于模具的英语论文，不知道上哪找？

Electrical discharge machining (EDM) is generally carried out in a dielectric liquid. It is a thermal process where material is removed by a succession of electrical discharges occurring between an electrode and a workpiece plunged in a dielectric fluid. Every discharge ionizes a localized plasma canal, where temperature can become very high (up to 1000 ◦C), leading to fusion and ebullition of metal of both facing materials [1]. The use of liquid has been regarded as indispensable for the stability and efficiency of the process, because it is known that the liquid serves as a cooling medium in the discharge gap and removed and flushed machining
debris out of the working gap. So it plays one of the most important roles in the materials removal mechanism.
EDM is a useful machining method. It has a great advantage in machining workpiece with special shape or hard-machining materials, such as plastic moulds, blanking die, carbide materials and engineering materials [2,