Reducing tool wear in micro electrochemical machining by cryogenic treatment

Kamaraj, Abishek B.; Sundaram, Murali

doi:10.1504/ijmr.2014.064441

Cited by 5 publications

(2 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, Kamaraj and Sundaram claimed that microtool geometry changes happened due to cavitation corrosion (tool: tungsten carbide, 1 M NaOH, 5 V). 10 Corrosion of the tungsten carbide as a tool was reported in another study in the voltage range of −0.6 V to −0.1 V on the micro tools during PECM. 11 The schematic of tool changes during PECM and μECM are shown in Fig.…”

mentioning

confidence: 88%

Analysis of Mechanisms Affecting the Tool in Pulsed Electrochemical Machining

Ghasemiansafaei,

Schaefer,

Hall

et al. 2023

J. Electrochem. Soc.

View full text Add to dashboard Cite

Electrochemical machining (ECM) is an important technology in machining difficult-to-cut materials. The contactless nature of ECM and anodic dissolution of the workpiece propound no tool ablation. Nevertheless, in a few studies, tool damages, namely the formation of pits and geometrical changes, have been observed, which is the investigative goal of this work. This study considers three hypotheses to investigate tool changes during pulsed electrochemical machining (PECM) which are hydrogen embrittlement, cavitation erosion, and cathodic corrosion. A systematic study of monitoring possible tool (1.4112 martensitic stainless steel) changes during ECM and PECM in aqueous NaNO3 electrolyte is performed. Experimental results of this study show that hydrogen embrittlement and cavitation erosion are not the reason for causing changes in the tool. Cathodic corrosion might be the reason for the changes in the tool in this study; however, more investigation is needed. The approach in this study is investigating the microstructure of the tool regarding different aspects before and after ECM and PECM, as the microstructure stores information regarding phenomena occurring during any process.

show abstract

mentioning

confidence: 88%

Analysis of Mechanisms Affecting the Tool in Pulsed Electrochemical Machining

Ghasemiansafaei,

Schaefer,

Hall

et al. 2023

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…Gunther et al (2016) proposed a device and a method for ECM, in which a workpiece could be machined in hardened or untampered conditions. Kamaraj and Sundaram (2014) used cryogenic treatment in enhancing the corrosion resistance of tungsten tools to reduce tool wear, thereby considerably improving the efficiency of the ECM. Yong and Ruiqin (2013) machined tapered holes for fuel jet nozzles that were shaped by ECM.…”

Section: Introductionmentioning

confidence: 99%

Simulation and experimental investigation on micro electrochemical drilling of micro-holes with ultra short pulse voltage

Liu

Niu

Guo

et al. 2019

IJMR

View full text Add to dashboard Cite

This paper introduces an electrochemical drilling process which is efficient in fabricating micro-holes, in order to study the influences of ultra short pulse voltage and high speed spiral micro electrode on the machining accuracy and machining efficiency of micro electrochemical drilling, the simulation of the gap electric field and the gap flow field are carried out. Firstly, the model of ultra short pulse gap electric field was established, by simulating the process of the drilling, the shape change of the anode workpiece surface was analysed and predicted with the ultra short pulse voltage. The results show that the ultra short pulse voltage can greatly improve the machining accuracy. Secondly, by using CFX to simulate the gap flow field, with the increase of the electrode rotating speed, the gas film generated with good insulation effect can greatly reduce the taper of the micro-holes. Finally, the simulation results above were verified by the experiments, a series of micro-holes was fabricated successfully; the diameter of the micro-holes was less than 200 μm, which proved that the micro electrochemical drilling for fabricating micro-holes has a widespread application prospect.

show abstract