Fabrication of Convex Plate-Shaped Micro Tool Electrode and its Application in Micro Hole Machining by ECM

2015 ◽  
Vol 645-646 ◽  
pp. 1043-1048
Author(s):  
Zhi Wei He ◽  
Ming Huan Wang ◽  
Li Zhang ◽  
Wei Peng
Keyword(s):  
Stainless Steel ◽  
Electrochemical Etching ◽  
Tool Electrode ◽  
Wire Edm ◽  
Cylindrical Electrode ◽  
Etching Method ◽  
Micro Hole ◽  
Micro Tool ◽  
Side Gap ◽  
Hole Machining

A method of fabricating convex plate-shaped micro electrode was proposed based on the electrochemical etching principle. The square sectional electrodes were prepared in advanced using wire-EDM, The micro cylindrical electrode was fabricated firstly by using the eletrochechemical etching method. Then the top end was insulated to protect it from etching. Then the convex plate-shaped micro electrode was obtained in subsequent etching. Comparative experiments in drilling micro-hole in stainless steel with the thickness of 1mm were done by using the cylindrical and convex plate-shaped micro electrode. Results shows that the better locality, smaller side-gap and hole taper could be obtain by using convex plate-shaped micro electrode.

Pulsed Micro-Electrochemical Machining Technology

2007 ◽  
Vol 339 ◽  
pp. 327-331 ◽  
Author(s):  
Xiao Hai Li ◽  
Zhen Long Wang ◽  
W.S. Zhao ◽  
Fu Qiang Hu
Keyword(s):  
Stainless Steel ◽  
High Speed ◽  
Short Pulse ◽  
Research Work ◽  
Electrochemical Machining ◽  
Tool Electrode ◽  
Stainless Steel Foil ◽  
Micro Ecm ◽  
Micro Hole ◽  
Micro Tool

This research work aims to explore the feasibility of applying electrochemical machining (ECM) to micromachining. An experimental setup for micro-ECM has been developed. Lower machining voltage, lower concentration of passivity electrolyte, high-frequency short-pulse power supply and micro tool electrode rotating at high speed have been synthetically adopted to localize the dissolution area in micro-ECM, so the machining gap can be kept at about 10 μm and the better resolution of machined shape is achieved. A micro-hole with 45μm diameter is drilled on the stainless steel foil with 100μm thickness. A new approach of fabricating microstructure by micro-ECM milling with a simple micro electrode is proposed, and the micro beam with width of about 50μm which has high precision is fabricated by micro-EC milling on the stainless steel foil (1Cr18Ni9Ti) with 300μm thickness. A mathematics model has been established, which can be used to simulate the process of shaping workpieces in the process of micro-ECM.

Vibration Drilling the 0Cr18Ni9Ti Stainless Steel Micro-Hole

2012 ◽  
Vol 217-219 ◽  
pp. 1592-1595 ◽  
Author(s):  
Peng Zhang ◽  
Chang Hong Mei ◽  
Xing Yu Guo
Keyword(s):  
Stainless Steel ◽  
Hole Drilling ◽  
Drilling Process ◽  
Drill Bit ◽  
Drilling Force ◽  
Process Mechanism ◽  
Micro Hole ◽  
Vibration Drilling ◽  
Hole Machining

Austenite 0Cr18Ni9Ti stainless steel is one of difficult-to-cut materials. It has poor dilling process, especially for micro-hole machining. The main reasons are the tiny drill, poor rigidity, easy to deviation. Moreover, the chip is difficult to discharge, so the drilling force is increased and the drill bit is easy to break, or even it is impossible for micro-hole drilling. In this paper, the vibration drilling process is adopted. The vibration drilling 0Cr18Ni9Ti stainless steel micro-hole process mechanism is researched. The stainless steel micro-hole drilling experiments are conducted. The results show that the vibration drilling can be a better solution for 0Cr18Ni9Ti stainless steel micro-hole processing.

Research on Vibration Drilling 1Cr18Ni9Ti Stainless Steel Micro-Hole

2012 ◽  
Vol 591-593 ◽  
pp. 423-427
Author(s):  
Peng Zhang ◽  
Yan Jing ◽  
Xing Yu Guo
Keyword(s):  
Stainless Steel ◽  
Hole Drilling ◽  
Drilling Process ◽  
Drill Bit ◽  
Drilling Force ◽  
Process Mechanism ◽  
Micro Hole ◽  
Vibration Drilling ◽  
Hole Machining

The austenite 1Cr18Ni9Ti stainless steel is one of difficult-to-cut materials. It has poor dilling process, especially for micro-hole machining. The main reasons are the tiny drill, poor rigidity, easy to deviation. Moreover, the chip is difficult to discharge, so the drilling force is increased and the drill bit is easy to break, or even it is impossible for micro-hole drilling. In this paper, the vibration drilling process is adopted. The vibration drilling 1Cr18Ni9Ti stainless steel micro-hole process mechanism is researched. The stainless steel micro-hole drilling experiments are conducted. The results show that the vibration drilling can be a better solution for 1Cr18Ni9Ti stainless steel micro-hole processing.

Experimentation and Analysis into Micro-Hole Machining of Ti-6Al-4V by Micro-EDM Using Boron Carbide Powder Mixed De-Ionized Water

2014 ◽  
Vol 4 (1) ◽  
pp. 22-41 ◽  
Author(s):  
G. Kibria ◽  
I. Shivakoti ◽  
B. Bhattacharyya
Keyword(s):  
Boron Carbide ◽  
Electrode Surface ◽  
Machining Process ◽  
Carbide Powder ◽  
Chemical Compositions ◽  
Tool Electrode ◽  
Micro Edm ◽  
Machined Surface ◽  
Micro Hole ◽  
Hole Machining

In micro-electrical discharge machining (micro-EDM), dielectric plays a significant role during the machining process as different types of dielectrics encounters different chemical compositions, cooling rates and dielectric strengths. Therefore, while employing these different dielectrics, dissimilar process responses are accounted when machining in EDM at micron level. The present paper investigates micro-EDM characteristics such as material removal rate (MRR), tool wear rate (TWR), overcut (OC), taperness and machining time (MT) during micro-machining of through holes on Ti-6Al-4V superalloy employing de-ionized water based dielectric other than conventional hydro-carbon oil i.e. kerosene. The paper also includes the comparative study of the micro-EDM machining characteristics employing boron carbide (B4C) powder as additive in de-ionized water dielectric at different discharge energies. The results show that MRR and taper of micro-hole are better and TWR is less employing B4C additive in the dielectric than pure one, i.e. the productivity is improved and same micro-tool can be used for machining an array of micro-holes. Surface topography and recast layer formed during micro-hole machining by micro-EDM has also been investigated based on optical and SEM micrographs. Energy dispersive spectroscopy (EDS) analysis of machined surface as well as tool electrode surface has been done and the results show that there is significant amount of infusion of tungsten element onto the machined surface. A significant amount of carbon element is found onto the tool electrode surface.

Fabrication of a micro-tool in micro-EDM combined with co-deposited Ni–SiC composites for micro-hole machining

2007 ◽  
Vol 17 (4) ◽  
pp. 763-774 ◽  
Author(s):  
Jung-Chou Hung ◽  
Wei-Chieh Wu ◽  
Biing-Hwa Yan ◽  
Fuang-Yuan Huang ◽  
Kun-Ling Wu
Keyword(s):  
Micro Edm ◽  
Micro Hole ◽  
Micro Tool ◽  
Sic Composites ◽  
Hole Machining

Development of Tool Electrode High Frequency Vibration Assisted Micro-Hole EDM Machine for Industry Environment

2010 ◽  
Vol 44-47 ◽  
pp. 430-435
Author(s):  
Ming Gang Xu ◽  
Xue Ke Luo ◽  
Yong Li
Keyword(s):  
High Frequency ◽  
Main Body ◽  
Tool Electrode ◽  
High Frequency Vibration ◽  
Electrical Control ◽  
Industry Environment ◽  
Micro Holes ◽  
Micro Hole ◽  
Micro Tool ◽  
Series Of Experiments

A new tool electrode high frequency vibration assisted micro-hole EDM machine tool aimed to resolve the problem of machine large quantities micro holes in industry was designed. The machine is mainly composed of main body, electrical control module and assistant mechanisms etc. And drawn tungsten wire was used as the micro tool electrode. A series of experiments were carried out using the micro-hole EDM machine.

Study on the Stainless Steel 1Cr18Ni9Ti Micro-Hole Drilling Experiment

2014 ◽  
Vol 596 ◽  
pp. 43-46 ◽  
Author(s):  
Ben Hong Li ◽  
Zhi Liu ◽  
Hao Wang ◽  
Zao Sheng Zhong
Keyword(s):  
Stainless Steel ◽  
High Speed ◽  
Tool Material ◽  
High Speed Steel ◽  
Cutting Parameters ◽  
Hole Drilling ◽  
Analysis Method ◽  
Drilling Force ◽  
Micro Hole ◽  
Hole Machining

Stainless steel is difficult to machine, especially micro-hole machining. In order to obtain the effect of drilling force by tool material and cutting parameters, the drilling experiments on stainless steel 1Cr18Ni9Ti have been done by diameter of 1.2 mm containing cobalt high speed steel and carbide drill. According to the experimental results, analysising the reason of drilling force change under different parameters and establishing a carbide drill drilling force empirical formula which combined with the regression analysis method.

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