Ultrasonic and electric discharge machining to deep and small hole on titanium alloy

Zhao, Wansheng; Wang, Zhenlong; Di, Shichun; Chi, Guanxin; Wei, Hongyu

doi:10.1016/s0924-0136(01)01149-9

Cited by 178 publications

(69 citation statements)

References 2 publications

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“…For the hole with high aspect ratio have less spark gap cause evacuation problem that can be improved with a notch on the tool as shown in Figure 8. High frequency ultrasonic vibrating single notched tool electrode with rotation improves the state of machine gap that increases the machine stability (Wansheng et al, 2002).…”

Section: Figurementioning

confidence: 99%

Optimisation strategies in ultrasonic vibration assisted electrical discharge machining: a review

Kumar

Grover

Walia

2017

IJPTECH

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In this paper, an attempt has been made to review the literature on strategies formulated and tested in ultrasonic vibration assisted electrical discharge machining (USEDM). The strategies for optimisation of EDM performance include flushing, dimensional accuracy, cavitation, surface morphology, polluted gases and chemical effects etc have been highlighted. The major performance controllable parameters in EDM process have also been discussed in this study. The main emphasis is given on classification of USEDM process on the basis of mode of ultrasonic vibration (UV) action imparted to EDM system, which includes a tool, work piece and the dielectric medium. The ultimate purpose of this study is to generalise the variable relationships of various proposed strategies, which may be applied in industries to improve the performance of USEDM. At the end of this study, some limitations of implementing ultrasonic vibration in EDM have been discussed. and has an illustrious, diverse and rich experience in the fields of academic, research and modern industry. His area of research includes advanced manufacturing processes and industrial engineering. He has survived seven PhD and more than 40 MTech Theses. He has published more than 150 research papers in peer reviewed journals and international conferences.

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Section: Figurementioning

confidence: 99%

Optimisation strategies in ultrasonic vibration assisted electrical discharge machining: a review

Kumar

Grover

Walia

2017

IJPTECH

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“…52 MRR of the combination EDM/USM process is higher than the conventional EDM. Wansheng et al 53 introduced ultrasonic vibration into micro EDM for deep hole drilling in Ti-6Al-4V workpiece material.…”

Section: Uaedm For Advanced and Difficult-to-cut Materialsmentioning

confidence: 99%

Ultrasonic vibration–assisted electric discharge machining: A research review

Khatri

Rathod²,

Valaki

2015

Proceedings of the Institution of Mechanical Engineers, Part B:

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Ultrasound waves are directly being used in many of the industrial applications including material removal for generating profiles on material surfaces. Trend has been shifted to use ultrasonic sound waves or ultrasonic vibrations as assisting media to enhance process performance. Electric discharge machining is one such industrial application for material removal, where ultrasonic vibrations have been introduced as assisting media for improving process performance. Ultrasonic vibrations were mainly employed in electric discharge machining process for improved debris evacuation from the sparking gap to increase process efficiency. It also resulted in stable and consistent sparking sequences by minimizing adverse arcing phenomenon in electric discharge machining. Since its introduction, technology of ultrasonic assistance in electric discharge machining has gone through considerable changes and penetrated to various variants of the electric discharge machining process mainly die sinking electric discharge machining, wire cut electric discharge machining and micro electric discharge machining.This article presents a research review for applications of ultrasonic vibrations for electric discharge machining process. The review has been carried out in terms of modes of applying ultrasonic vibrations, effect on performance parameters, process modelling and optimization and application for difficult-to-cut advanced materials. Based on the review of present status of the ultrasonic-assisted electric discharge machining, future research needs have been identified to strengthen the capacity and capabilities of the electric discharge machining process. KeywordsUltrasonic vibration, electric discharge machining, ultrasonic vibration-assisted electric discharge machining, die sinking electric discharge machining, wire cut electric discharge machining and micro electric discharge machining Date

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“…The influence of the workpiece after solidifying and before machining conditions, were made just for reducing the unwanted deforming lines in the workpiece profile, reducing thermal modifications [2] due to classical machining of fabrication in the pre-process of EDM.…”

Section: Introductionmentioning

confidence: 99%

Efficient dielectric fluid approach in electrodischarge finish machining on the material surface roughness of titanium alloy Ti-621/0.8

Mihai

Brabie

2015

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. This study was developed to reveal the correlation between current intensity and pulse off time with surface roughness of Ti-621/0.8 in fine EDM machining, in a unique manner of dielectric fluid approach. Depth of cut was taken in consideration to be not as high 1 µm due to the fact that good results were taken for more less heights before. In the case of Ti alloy (Ti-621/0.8) bar, EDM machining with low parameters (limited 110 V) is a delicate process, in which reaching SR under 1 µm is a challenge. Cooper and Graphite electrodes were used, die sinker oil dielectric from machine manufacture was used, without thermal modification to workpiece or electrode, just active dielectric compensatory fluid pumping solution with 0.5 MPa. IntroductionThe machining of Ti-621/0.8 with conventional machining processes is very difficult because of high toughness and low thermal conductivity. Investigate the effects of cooling time due to pulse off time as prime factor, and peak current intensity as a second factor, of fine machining without using other cooling options, like cryogenically treatment before or in time of processing [1] which provided smooth surface appearance, the cold effect is provided only from the speed and direction of dielectric fluid in the gap area. Regardless of pulse on time which is one of the main factors in MRR (Material Remove Rate), the surface roughness quality is based on efficiency of recasting time of layers [3]. Controlling the thermal proprieties of the Ti-621/0.8 is capital when we have a process in which cooling is allowed less time than heating up on a regime of finish EDM machining with spark temperatures around melting temperature of Ti alloy.Optimizing input parameters or other means like dielectric approach, is allowing a larger area of applicability in the industry of Ti-621/0.8.The influence of the workpiece after solidifying and before machining conditions, were made just for reducing the unwanted deforming lines in the workpiece profile, reducing thermal modifications [2] due to classical machining of fabrication in the pre-process of EDM.Presented experiments are applicable on the workpiece models that will have a distinct simple geometrical surface to be machined on, and a very good dielectric gap circulation.

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Ultrasonic and electric discharge machining to deep and small hole on titanium alloy

Cited by 178 publications

References 2 publications

Optimisation strategies in ultrasonic vibration assisted electrical discharge machining: a review

Optimisation strategies in ultrasonic vibration assisted electrical discharge machining: a review

Ultrasonic vibration–assisted electric discharge machining: A research review

Efficient dielectric fluid approach in electrodischarge finish machining on the material surface roughness of titanium alloy Ti-621/0.8

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