TECHNOLOGICAL PROSPECTS IN COMBINATION OF ELECTRO-EROSION AND ELECTRO-CHEMICAL PROCESSES IN PINHOLES WORKING
Abstract and keywords
Abstract (English):
The prospects are shown in the combination of the processes of electro-chemical dilution and electro-erosion removal of material worked at pinholes broaching with a fixed cathode-tool. The procedure of high-voltage pulses formation for the parameter control of integrated working is presented. The source ensuring the formation of high-voltage pulses with voltage up to 400 V, duration of 4 mcs and a period from 12 to 50mcs is developed. The experimental plant has been developed for the integrated electro-erosion and electro-chemical broaching of pinholes at electrolyte supply under pressure through a fixed cathode-tool. It is shown that the introduction of an electro-erosion constituent in the course of working increased a broaching rate more than 10 times. The creation of channels of discharge on a gas-vapor jacket in a spark gap allows realizing current densities from 50…100 a/cm2 at the primary moment and up to 10…15 a/cm2 by the end of working. The limitations were established to ensure the accuracy of a hole formed and connected with the instability of the value of a spark gap. There is offered a way to increase a hole accuracy at the expense of the use of the working procedure with the stabilization of the value of a spark gap.

Keywords:
electro-chemical process, electro-erosion process, microprocessing, combined working, anode, cathode-tool, spark gap.
Text
Publication text (PDF): Read Download
References

1. Venevtsova, S.N., Belousov, I.А. Microelectro-chemical processing of materials with use of nano-second pulses of technological voltage // Modern Electro-Technology in Industry of Russia (youth innovations); Proceedings of the Scientific-Eng. Conf., Tula, October7, 2011 - Tula: TulSU, 2011. pp. 9 - 10.

2. Levinson, Е.М. Pinholes (Manufacturing methods). - L.: Mechanical Engineering, 1977. - pp.152.

3. Moroz, I.I. Electrochemical Dimensions Working of Metals. - М.: “Mechanical Engineering”, 2009. - pp. 279.

4. Rakhimyanov, H.М., Vasilevskaya, S.I. Technological potentialities of pinholes electrochemical working with fixed cathode-tool // Metal Working (Techniques, Equipment, Toolware). - 2016. - № 2. - pp. 12-20. - Doihttps://doi.org/10.17212/1994 - 6309-2016-2-12-20.

5. Rakhimyanov, H.М., Zhuravlyov, А.I., Gaar, N.P. Plant for researches of electrochemical processes under conditions of laser activation of electrochemical dimensions working // Scientific Bulletin of NSTU. - 2010. - № 2. - pp. 135-144.

6. Rakhimyanov H.M., Gaar N.P. Possible ways for intensification of dimensional electrochemical machining (DECM) / IFOST. Novosibirsk - Tomsk, Russia, June 23 - 29: Proceedings of the third international forum on strategic technologies. Novosibirsk. NSTU - 2008. P. 106-107.

7. Rakhimyanov, H.М., Krasilnikov, B.А., Rakhimyanov, К.H. Shaping accuracy at electro-diamond grooving in amorphous and nano-crystalline alloys // Metal Working (Techniques, Equipment, Toolware). - 2006. - № 2. - pp. 32-33.

8. Rakhimyanov, H.М., Krasilnikov, B.А., Vasilevskaya, S.I. Investigations of electrolytes ensuring accuracy of electrochemical working of M1 copper // Innovations in Mechanical Engineering - Basis of Russia Technological Development: Proceedings of the VI-th Inter. Scientific-Tech. Conf. - Barnaul, 2014. - Part. 2. - pp. 100-104.

9. Rakhimyanov, H.М., Krasilnikov, B.А., Vasilevskaya, S.I. Degree of process localization at intensification of copper anode dilution // Metal Working (Techniques, Equipment, Toolware). - 2015. - № 3 (68). - pp. 58-65. - Doi:https://doi.org/10.17212/1994 - 6309 -2015-3-58 -65.

10. Smolentsev, V.P., Sharov, Yu.V., Koptev, I.Т. Multi-electrode working of channels in filters of warm engines // Science Intensive Technologies in Mechanical Engineering. - 2015. - №8(50). - pp. 22-27.

Login or Create
* Forgot password?