Author
Z. N. Guo
Bio: Z. N. Guo is an academic researcher from Hong Kong Polytechnic University. The author has contributed to research in topics: Electrical discharge machining & Machining. The author has an hindex of 2, co-authored 2 publications receiving 128 citations.
Papers
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TL;DR: In this paper, an investigation has been made into the combined technology of ultrasonic and wire electrical discharge machining (W-EDM), in which the design of the vibrating device is described.
94 citations
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TL;DR: In this paper, it has been shown that the high frequency vibration of the wire electrode is able to bring about multiple channel discharges so that better surface quality and a high cutting rate can be obtained simultaneously.
46 citations
Cited by
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TL;DR: In this paper, the authors reviewed the research trends in electrical discharge machining on ultrasonic vibration, dry EDM machining with powder additives, EDM in water and modeling technique in predicting EDM performances.
Abstract: Electrical discharge machining (EDM) is one of the earliest non-traditional machining processes. EDM process is based on thermoelectric energy between the work piece and an electrode. A pulse discharge occurs in a small gap between the work piece and the electrode and removes the unwanted material from the parent metal through melting and vaporising. The electrode and the work piece must have electrical conductivity in order to generate the spark. There are various types of products which can be produced using EDM such as dies and moulds. Parts of aerospace, automotive industry and surgical components can be finished by EDM. This paper reviews the research trends in EDM on ultrasonic vibration, dry EDM machining, EDM with powder additives, EDM in water and modeling technique in predicting EDM performances.
785 citations
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TL;DR: In this paper, the authors reviewed the vast array of research work carried out from the spin-off from the EDM process to the development of the WEDM, and highlighted the adaptive monitoring and control of the process investigating the feasibility of different control strategies of obtaining the optimal machining conditions.
Abstract: Wire electrical discharge machining (WEDM) is a specialised thermal machining process capable of accurately machining parts with varying hardness or complex shapes, which have sharp edges that are very difficult to be machined by the main stream machining processes. This practical technology of the WEDM process is based on the conventional EDM sparking phenomenon utilising the widely accepted non-contact technique of material removal. Since the introduction of the process, WEDM has evolved from a simple means of making tools and dies to the best alternative of producing micro-scale parts with the highest degree of dimensional accuracy and surface finish quality. Over the years, the WEDM process has remained as a competitive and economical machining option fulfilling the demanding machining requirements imposed by the short product development cycles and the growing cost pressures. However, the risk of wire breakage and bending has undermined the full potential of the process drastically reducing the efficiency and accuracy of the WEDM operation. A significant amount of research has explored the different methodologies of achieving the ultimate WEDM goals of optimising the numerous process parameters analytically with the total elimination of the wire breakages thereby also improving the overall machining reliability. This paper reviews the vast array of research work carried out from the spin-off from the EDM process to the development of the WEDM. It reports on the WEDM research involving the optimisation of the process parameters surveying the influence of the various factors affecting the machining performance and productivity. The paper also highlights the adaptive monitoring and control of the process investigating the feasibility of the different control strategies of obtaining the optimal machining conditions. A wide range of WEDM industrial applications are reported together with the development of the hybrid machining processes. The final part of the paper discusses these developments and outlines the possible trends for future WEDM research.
658 citations
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TL;DR: An overview of the current technological and economical capabilities of electrochemical (ECM)-based, electro-physical (EDM-based) and photonic (Laser/EBM)-based additive and removal processes for turbomachinery component manufacture is presented in this paper.
Abstract: This paper presents an overview of the current technological and economical capabilities of electrochemical (ECM-based), electro-physical (EDM-based) and photonic (Laser-/EBM-based) additive and removal processes for turbomachinery component manufacture. Starting with the industrial demands and challenges of today, the technologies are reviewed in detail regarding achievable geometrical precision and surface integrity as well as material removal and deposition rates for conventionally difficult-to-cut Ti- and Ni-based alloys and dedicated steels. Past, existing and future areas of technology application of these advanced non-mechanical manufacturing processes are discussed. The paper focusses on the description of shaping processes therefore excludes pure welding or coating applications.
315 citations
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TL;DR: In this article, the authors present an up-to-date review of progress and benefits of different routes for fabrication and machining of composites and conclude that polycrystalline tools and diamond-coated tools are best suitable for various conventional machining operations.
Abstract: Intrinsically smart, metal matrix composites (MMCs) are lightweight and high-performance materials having ever expanding industrial applications. The structural and the functional properties of these materials can be altered as per the industrial demands. The process technologies indulged in fabrication and machining of these materials attract the researchers and industrial community. Hybrid electric discharge machining is a promising and the most reliable nonconventional machining process for MMCs. It exhibits higher competence for machining complex shapes with greater accuracy. This paper presents an up-to-date review of progress and benefits of different routes for fabrication and machining of composites. It reports certain practical analysis and research findings including various issues on fabrication and machining of MMCs. It is concluded that polycrystalline tools and diamond-coated tools are best suitable for various conventional machining operations. High speed, small depth of cut and low feed ra...
251 citations
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TL;DR: In this article, the authors presented a new combined method of ultrasonic and electrical discharge machining, where the ultrasonic transducer does not vibrate the tool, as in traditional ultrasonic machining but vibrates the workpiece.
126 citations