Thermal and Mechanical Influence of Ultrasonically Aided Electrical Discharge Machining on Co-Cr Alloys

Cristea, Bogdan Ionuț; Ghiculescu, Daniel; Mnerie, Dumitru

doi:10.4028/www.scientific.net/amr.1157.93

Cited by 3 publications

(2 citation statements)

References 21 publications

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“…It is widely used in the machining of electrically conductive and difficult-to-cut materials [1,2]. However, in the process of EDM, if the electrical corrosion products in the discharge gap cannot be discharged in time, short circuits and other phenomena will frequently occur in the process, resulting in the burn of the electrode and the workpiece, and even the processing failure [3].…”

Section: Introductionmentioning

confidence: 99%

Adaptive flushing technology for slotted electrode EDM based on gap discharge status detection

Gao,

Liu,

Han

et al. 2023

Second International Conference on Advanced Manufacturing Technology and Manufacturing Systems (ICAMTMS 2023)

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Traditional Electrical Discharge Machining (EDM) with internal flushing is often used for machining special-shaped cavities of conductive materials, which improves the machining efficiency but tends to produce sizeable residual material columns on the bottom surface of the workpiece cavity, affecting the machining quality. We propose an adaptive flushing technology for slotted electrode EDM based on gap discharge status detection to solve this problem. An adaptive flushing system was built, and the system’s feasibility was verified through experiments. EDM comparison experiments were designed to study the machining performance of the adaptive flushing slotted electrode EDM system. The experimental results show that the Material Removal Rate (MRR) is increased by about 1.1% and 8.0% when using adaptive flushing compared to continuous flushing and no flushing, respectively. The electrode wear rate (EWR) is reduced by about 38.8% and 4.4% compared to continuous flushing and no flushing, respectively. Therefore, adaptive flushing achieves the dual goal of ensuring processing efficiency and reducing electrode wear.

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Section: Introductionmentioning

confidence: 99%

Adaptive flushing technology for slotted electrode EDM based on gap discharge status detection

Gao,

Liu,

Han

et al. 2023

Second International Conference on Advanced Manufacturing Technology and Manufacturing Systems (ICAMTMS 2023)

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“…In previous research, certain ways to increase application performance have been addressed. One of the ways to improve working conditions was ultrasonic activation of the filiform electrode [5], [6], [7]. Magnetic activation of the dielectric liquid in the effective processing space was also used [8], [9].…”

Section: Introductionmentioning

confidence: 99%

On some Possibilities for Optimizing the Wire Electrical Discharge Machining (WEDM) Processing of Welded Joints Applied to Stainless Steel

Nani

Titu

Mnerie

et al. 2022

DDF

Self Cite

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The process of wire electrical discharge machining (WEDM) of welded joints applied to stainless steel parts has raised important questions due to the effects on the machined surface and even the deep substrates. The paper proposes the possibility of improving working conditions by multiple activation of the effective processing space. The experimental research was performed under the conditions of simultaneous activation, both ultrasonic of the wire electrode and by magnetic activation of the dielectric liquid. The selection of the optimal parameters of magnetic activation was made using an experimental statistical modeling method, with a statistical analysis of the objective functions, using specialized software. The additional introduction of ultrasonic energy into the workspace has led to the rapid refresh of the dielectric fluid and the accelerated evacuation of eroded particles.

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Investigation of Machining Characteristics in Electrical Discharge Machining Using a Slotted Electrode with Internal Flushing

Gao,

Liu,

Han

et al. 2023

Micromachines

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In die-sinking electrical discharge machining (EDM), it is challenging to implement internal flushing, mainly because it is easy to produce residual material columns on the workpiece cavity’s bottom surface, affecting the processing quality and efficiency. In order to solve this problem, the internal flushing slotted electrode EDM technology was proposed. The slotted electrode was designed, and its preparation method was described. The influence of pulse width, pulse interval, and flushing pressure on the performance of the internal flushing slotted electrode EDM was studied using single-factor experiments. The experimental results indicate that, with the increase in pulse width, the material removal rate (MRR) increases first and then decreases, while the electrode wear rate (EWR) and the relative electrode wear rate (REWR) decrease gradually; with the increase in pulse interval, the MRR decreases, while the EWR and the REWR increase gradually; with the increase in flushing pressure, the MRR increases first and then decreases, while the EWR and the REWR increase gradually. When the slotted electrode is used for continuous internal flushing EDM, the appropriate pulse width, flushing pressure, and smaller pulse interval can improve the MRR and reduce the EWR and the REWR.

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Thermal and Mechanical Influence of Ultrasonically Aided Electrical Discharge Machining on Co-Cr Alloys

Abstract: The paper reviews machining of CoCr alloys by electric discharge machining and ultrasonic aided discharge machining. The removal mechanism is discussed, modeled with Comsol Multiphysics and validated using experimental data.

Cited by 3 publications

References 21 publications

Adaptive flushing technology for slotted electrode EDM based on gap discharge status detection

Adaptive flushing technology for slotted electrode EDM based on gap discharge status detection

On some Possibilities for Optimizing the Wire Electrical Discharge Machining (WEDM) Processing of Welded Joints Applied to Stainless Steel

Investigation of Machining Characteristics in Electrical Discharge Machining Using a Slotted Electrode with Internal Flushing

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