Analysis and Modeling on Defects of Deep Micro-holes Fabrication in Stainless Steel Through μECM

2021 ◽  
pp. 135-145
Author(s):  
Md. Zishanur Rahman ◽  
Alok Kumar Das ◽  
Somnath Chattopadhyaya
Keyword(s):  
Stainless Steel ◽  
Micro Holes

Electrochemical Micro Machining of Stainless Steel with Voltage Pulses

2009 ◽  
Vol 69-70 ◽  
pp. 219-224
Author(s):  
Hui Chen ◽  
Zhen Long Wang ◽  
Zi Long Peng ◽  
Ying Huai Dong ◽  
Wan Sheng Zhao
Keyword(s):  
Stainless Steel ◽  
Oxide Layer ◽  
Electrochemical Machining ◽  
Electrolyte Composition ◽  
Machining Parameters ◽  
Micro Machining ◽  
Short Pulses ◽  
Is Research ◽  
Micro Holes ◽  
Voltage Pulses

The purpose of this paper is to study electrochemical micro machining (ECM) technology on stainless steel. The micro machining of stainless steel is difficult by electrochemical machining, especially in machining deep micro holes, because of an oxide layer formed on the surface. To machining stainless steel, HF is usually used in electrolyte to destabilize the oxide layer. In this paper, ECM of stainless steel by applying short pulses in less toxic and corrosive electrolyte is research. The influence of electrochemical machining parameters such as voltage, current, electrolyte composition to machine stainless steel was investigated. The results showed that the oxide layer can be reduced by adding chloride and complex.

Electrochemical Micro Machining of Stainless Steel in EDTA Complex Electrolyte

2013 ◽  
Vol 446-447 ◽  
pp. 214-218 ◽  
Author(s):  
Hui Chen ◽  
Lei Shi ◽  
Zhi Yong Wang ◽  
Shui Qin Yu
Keyword(s):  
Stainless Steel ◽  
Oxide Layer ◽  
Ethylenediaminetetraacetic Acid ◽  
Electrochemical Machining ◽  
Electrolyte Composition ◽  
Machining Parameters ◽  
Micro Machining ◽  
Edta Complex ◽  
Micro Holes ◽  
The Stability

Electrochemical micro machining is a critical micro machining technology. The purpose of this paper is to study the effect of ethylenediaminetetraacetic acid (EDTA) complex electrolyte in electrochemical micro machining (ECM) of stainless steel. The micro machining of stainless steel is difficult by electrochemical machining, especially in machining deep micro holes, because of an oxide layer formed on the surface. In this paper, ECM of stainless steel in EDTA complex electrolyte was researched. The influence of electrochemical machining parameters such as pulse duration, electrolyte composition to machine stainless steel was investigated. The results showed that EDTA can enhance the stability of electrochemical machining and the electrolyte is eco-friendly.

Electrochemical Micro Drilling of Stainless Steel with Tool Electrode Jump Motion

2009 ◽  
Vol 626-627 ◽  
pp. 333-338 ◽  
Author(s):  
Zhuang Liu ◽  
Z.J. Qiu ◽  
C. Heng ◽  
Ning Song Qu
Keyword(s):  
Stainless Steel ◽  
Linear Motor ◽  
Machining Accuracy ◽  
Tool Electrode ◽  
Machining Time ◽  
High Acceleration ◽  
Micro Holes ◽  
Micro Drilling ◽  
Time Lead ◽  
Accelerating Motion

ECM micro drilling with tool electrode jump motion in cycles is introduced in this work. A linear motor is employed to carry tool to jump with high acceleration in cycles. Due to the high accelerating motion of tool electrode, the electrolyte within machining gap is able to be refreshed. The Z-axis feeding motor, linear motor and DC supplier are coupled in the experimental setup and a series of micro-holes are drilled on stainless steel (1Cr18Ni9Ti) plate with thickness of 0.5mm to investigate the presented process. Experimental results shows, cycle jump motion of tool electrode, higher jump acceleration, longer jump height and shorter cycle machining time lead to better machining accuracy.

Formation of Micro-/Nano-Surface Structures on Stainless Steel by Ultrafast Lasers

2019 ◽  
Author(s):  
Kewei Li ◽  
Xin Zhao
Keyword(s):  
Stainless Steel ◽  
Ultrafast Lasers ◽  
Critical Factor ◽  
Pulse Number ◽  
Surface Structures ◽  
Femtosecond Laser Irradiation ◽  
Multi Scale ◽  
Structure Morphology ◽  
Micro Holes ◽  
Scale Surface

Abstract Surface morphology is a critical factor to determine the surface functionality. Ultrafast pulsed laser is a powerful tool to induce multi-scale surface structures on different materials, and thus control their functionalities. This paper presents an experimental study on the micro/nano-scale surface structure formation by femtosecond laser irradiation on stainless steel. The effects of laser fluence, effective pulse number per spot, and repetition rate on the structure morphology and dimension are studied. By controlling the laser parameters, four different types of structures are obtained: (1) laser-induced periodic surface structrues (LIPSS), (2) microgrooves covered by LIPSS, (3) microgrooves/micro-holes covered by LIPSS, and (4) irregular microstructures. The formation dynamics and mechanisms of different structures are investigated.

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