Fast drilling of high accuracy micro holes in stainless steel with DPSS laser

2002 ◽  
Author(s):  
C. Mehlmann ◽  
S. Govorkov ◽  
E. Slohodtchikov ◽  
A. Wiessner ◽  
D. Basting
Keyword(s):  
Stainless Steel ◽  
High Accuracy ◽  
Dpss Laser ◽  
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.

Grinding a Hard-to-Grind Materials with Ultrasonic-Assisted Fluid

2014 ◽  
Vol 8 (3) ◽  
pp. 478-483 ◽  
Author(s):  
Jun Ishimatsu ◽  
◽  
Atsushi Iwaita ◽  
Hiromi Isobe ◽  
Keyword(s):  
Stainless Steel ◽  
Pure Titanium ◽  
Ground Surface ◽  
High Accuracy ◽  
Grinding Force ◽  
Grinding Wheel ◽  
Machining Processes ◽  
Fluid Supply ◽  
Ultrasonic Assisted ◽  
Wheel Loading

Grinding is one of the machining processes used in the manufacture of high-accuracy parts. When materials which easily adhere to the grinding wheel are used, such as aluminum, stainless steel, and titanium, wheel loading must be considered, as this could have a limiting effect. In this research, the application of ultrasonic energy to the grinding fluid is carried out with a specially-designed effector inserted into the fluid supply flow with the expectation that loading will be removed from the wheel. The experiment is carried out on stainless steel and pure titanium. The grinding force and accession of temperature are investigated during grinding, and the reduction of both grinding force and thermal escalation is confirmed. Burn marks on the ground surface of titanium are also prevented.

High-Speed and High-Accuracy EDM of Micro Holes by Using a 5-DOF Controlled Maglev Local Actuator

2009 ◽  
Vol 626-627 ◽  
pp. 255-260 ◽  
Author(s):  
X. Zhang ◽  
Y. Ueyama ◽  
T. Shinshi ◽  
Akira Shimokohbe ◽  
T. Sato ◽  
...  
Keyword(s):  
High Precision ◽  
Electrical Discharge ◽  
High Speed ◽  
Electrical Discharge Machining ◽  
High Accuracy ◽  
Circular Motion ◽  
Experimental Results ◽  
Radial Vibration ◽  
Machining Speed ◽  
Micro Holes

The objective of this study is to realize high-speed and high-accuracy electrical discharge machining (EDM) of micro holes using a combination of a conventional EDM machine and a maglev local actuator. In this paper, the conventional EDM machine and the wide-bandwidth, high-precision, 5-DOF controlled maglev local actuator are combined and cooperatively controlled. Then to accelerate the debris ejection from the machined holes, the driving methods of the axial jump and radial vibration of the electrode are discussed. The experimental results show that the maglev local actuator can adjust the gap between the electrode and a workpiece speedily, and the machining speed is improved by 434.2%, compared with conventional EDM machine. Moreover, by the jump and the circular motion of the electrode, the debris ejection can be accelerated, the abnormal electrical discharge can be avoided, and the machining speed also is improved by 580.3%.

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.

Sign in / Sign up

Export Citation Format

Share Document