Research on Principles and Processes of Electrochemical Finishing with Ultrahigh-Frequency Group Pulse

2011 ◽  
Vol 211-212 ◽  
pp. 1162-1166
Author(s):  
Yong Yan ◽  
Wei Min Zhang ◽  
Zhi Jing Zhang ◽  
Xian Li

On the foundation of the methods and mechanisms of electrochemical finishing with high-frequency group pulse we studied before, properties of the finishing process with ultrahigh-frequency group pulse were studied, effects of pulse effect on the finishing result were also researched. With the Ultrahigh-frequency group pulse power we designed, we designed a equipment with high precision and easy operation. After some single-factor experiments, we obtained the laws of how the main pulse influenced the result, from the Ra of 2Cr13 stainless steel surface.

2010 ◽  
Vol 44-47 ◽  
pp. 1656-1660
Author(s):  
Liang Yin ◽  
Wei Min Zhang ◽  
Yong Yan ◽  
Zhi Jing Zhang

The methods and mechanisms of electrochemical finishing with high-frequency group pulse was studied. With the high-frequency group pulse power designed, an equipment with high precision and easy operation was designed. In the experiment, The influence of power frequency, machining voltage, machining gap and so on to the result was analyzed. With some orthogonal experiments, we obtained the best combination of process parameters, from the Ra value of 2Cr13 stainless steel surface.


2018 ◽  
Vol 154 ◽  
pp. 01114 ◽  
Author(s):  
Aria Riswanda ◽  
Indro Pranoto ◽  
Deendarlianto ◽  
Indarto ◽  
Teguh Wibowo

Multiple droplets are drops of water that continuously dropped onto a surface. Spray cooling is an application of the use of droplet on a cooling system. Spray cooling is usually used in a cooling system of electronic devices, and material quenching. In this study, correlations between Weber number and surface temperature decrease rate during multiple droplets impingement are investigated and analyzed. Visualization process is used to help determine the evaporation time of droplets impingement by using high speed camera. Induction stove is used to maintain a stainless steel surface temperature at 120°C, 140°C, and 160°C. The Weber number was varied at 15, and 52.5 to simulate low and medium Weber number. The result of this study shows that increase in Weber number does not increase the temperature decrease rate noticeably. Whereas the Weber number decrease the time required for surface temperature to reach its lowest surface temperature. It was also found that for low and medium Weber number, Weber number affect the evaporation time of multiple droplets after impingement.


1998 ◽  
Vol 97 (3) ◽  
pp. 191-199 ◽  
Author(s):  
Paul R. Rennie ◽  
X.D. Chen ◽  
Antony R. Mackereth

RSC Advances ◽  
2016 ◽  
Vol 6 (18) ◽  
pp. 14809-14818 ◽  
Author(s):  
Gang Xu ◽  
Dicky Pranantyo ◽  
Bin Zhang ◽  
Liqun Xu ◽  
Koon-Gee Neoh ◽  
...  

Tannic acid and parasin I were deposited alternatively on stainless steel surface by Michael addition/Schiff base reaction-enabled layer-by-layer deposition technique.


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