Automation of electrochemical processes elaboration of crooked spatial surfaces of electrically conductive products with jet glazing technique
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USHOMIRSKAYA, L., ZARUBIN, D., KHURAMSHIN, M., KIRILLOV, B.. Automation of electrochemical processes elaboration of crooked spatial surfaces of electrically conductive products with jet glazing technique. In: Materials Science and Condensed Matter Physics, Ed. 8-th Edition, 12-16 septembrie 2016, Chişinău. Chişinău: Institutul de Fizică Aplicată, 2016, Editia 8, p. 349. ISBN 978-9975-9787-1-2.
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Materials Science and Condensed Matter Physics
Editia 8, 2016
Conferința "International Conference on Materials Science and Condensed Matter Physics"
8-th Edition, Chişinău, Moldova, 12-16 septembrie 2016

Automation of electrochemical processes elaboration of crooked spatial surfaces of electrically conductive products with jet glazing technique


Pag. 349-349

Ushomirskaya L., Zarubin D., Khuramshin M., Kirillov B.
 
Peter the Great Saint-Petersburg Polytechnic University
 
 
Disponibil în IBN: 6 august 2019


Rezumat

The area of electrochemical and electrophysical elaboration methods is growing every year. The reason for that is the active development of the world machinery that constantly sets new difficult technological tasks. Complex technologies successfully solved a number of issues, such as surface final polishing, application of coatings, etc.   However, like any other technology, electrotechnology has its applicability range. Complex and expensive equipment for electrochemical and electrophysical processes is often developed for a specific product or size. In addition, the implementation of these methods often requires the total details immersion to the electrolyte, which makes it difficult to elaborate the isolated surfaces.   This work is dedicated to the development of electrolytic-plasma elaboration equipment, which will allow to automate the electrochemical processes and will give the opportunity to elaborate any crooked spatial surfaces of electrically conductive products. The main idea of this equipment is the intention to localize the elaboration area, through the application of jet glazing technique. This makes it possible to elaborate almost any exposed surfaces by moving the electrolyte flow diffuser and also enables the use of smaller power supply sources.   At the same time there are difficulties with the use of jet glazing technique. When exposed to the jet with some pressure on the surface, if it falls down or on the vertical wall the wetting spot on the interface of "jet-workpiece" turns uncertain with high-speed lateral flows that result to the disruption or inability of steam-plasma membrane creation and as a consequence - to the nonuniformity of the elaboration. To eliminate the spreading factor a special irrigation scheme has been developed in which the jet is directed to the vertically upward position, and its removal is carried downward by gravitation. The electrolyte is removed to the common volume. The pressure is limited in such way that the distance from the jet to the nozzle is equal to the gap size between the nozzle and the workpiece. In this case, the jet contact area with the workpiece is strictly limited with quasi-zero lateral velocity jets from the wetting spots. The limit of the wetting spots and continuous monitoring of its dimensions allow localizing the elaboration area, thereby ensuring the consistency of process parameters, reduction of current consumption, improvement of the evaluation quality.   A necessary condition for this equipment operation is the fact that the jet impacts only on the normal to the surface, and at any given time watering must be performed vertically. For realization of the above-described 5-axis mechanism watering system with CNC is developed. During the process the workpiece is mounted on a turntable that serves as an anode.   During this project mechanical, hydraulic and electrical parts of workpiece were developed for the jet glazing electrolytic-plasma elaboration. Moreover, control software for the used electronics is engineered.