scholarly journals Micro-Shaping of Pure Aluminum by Intermittent Ultrasonic Oscillation Assisted Wire Electrochemical Micromachining with an Ultra-Low-Concentration Mixed Electrolyte

2021 ◽  
Author(s):  
Xiaolei Bi ◽  
Yongbin Zeng ◽  
Ningsong Qu
Keyword(s):  
Pure Aluminum ◽  
Electrochemical Micromachining ◽  
Ultrasonic Oscillation ◽  
Mixed Electrolyte ◽  
Low Concentration ◽  
Wire Electrochemical Micromachining

scholarly journals Fabrication of array of micro circular impressions using different electrolytes by maskless electrochemical micromachining

2020 ◽  
Vol 7 ◽  
pp. 15 ◽  
Author(s):  
S. Kunar ◽  
E. Rajkeerthi ◽  
K. Mandal ◽  
B. Bhattacharyya
Keyword(s):  
Experimental Investigation ◽  
Cross Flow ◽  
Surface Characteristics ◽  
Pulse Frequency ◽  
Electrochemical Micromachining ◽  
Duty Ratio ◽  
Mixed Electrolyte ◽  
Radial Overcut ◽  
Cell Electrode ◽  
Electrical Connections

Maskless electrochemical micromachining (EMM) is a prominent technique for producing the array of micro circular impressions. A method for producing the array of micro circular impressions on stainless steel workpiece applying maskless electrochemical micromachining process is presented. The experimental setup consists of maskless EMM cell, electrode holding devices, electrical connections of electrodes and constricted vertical cross flow electrolyte system to carry out the experimental investigation. One non-conductive masked patterned tool can produce more than twenty six textured samples with high quality. A mathematical model is developed to estimate theoretically the radial overcut and machining depth of the generated array of micro circular impressions by this process and corroborate the experimental results. This study provides an elementary perceptive about maskless EMM process based on the effects of EMM process variables i.e. pulse frequency and duty ratio on surface characteristics including overcut and machining depth for NaCl, NaNO3 and NaNO3 + NaCl electrolytes. From the experimental investigation, it is observed that the combined effect of lower duty ratio and higher frequency generates the best array of micro circular impressions using the mixed electrolyte of NaNO3 + NaCl with mean radial overcut of 23.31 µm and mean machining depth of 14.1 µm.

scholarly journals Electrochemical Microslot Machining by Ultrasonic-Vibration-Aided Electrolyte on Nitinol Wire

Processes ◽  
2021 ◽  
Vol 9 (10) ◽  
pp. 1752
Author(s):  
Jung-Chou Hung ◽  
Po-Jen Yang
Keyword(s):  
Ultrasonic Vibration ◽  
Electrochemical Micromachining ◽  
Machining Accuracy ◽  
Machining Parameters ◽  
Power Generator ◽  
Nitinol Wire ◽  
Wire Electrochemical Micromachining ◽  
Titanium Wire ◽  
Pulse Power Generator ◽  
Machining Characteristics

In this research, the main purpose was to study the applicability of a machining method on microscale medical-equipment manufacturing. The characteristics of wire electrochemical micromachining (WECMM) against NiTi 50-50 wire was investigated. The study utilized a tungsten wire 0.03 mm in diameter as an electrode to cut a fine slot into the nickel–titanium wire. In order to reach a high-precision WECMM finish, an ultrashort pulse power generator was used as a power source to minimize the stray current effect, thus improving the machining accuracy. During the process, various machining parameters were tested for their effects on machining characteristics. In addition, ultrasonic-vibration-aided WECMM was investigated to determine whether it benefited the machining characteristics. The experiment’s results showed that under such an experiment setting, microslots can be successfully manufactured. Furthermore, with the advance adjustment of experimental parameters, the machining accuracy was improved. Finally, a fine slot was manufactured under the optimum experiment parameters and aided by ultrasonic vibration.

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