Stabilization of high-current glow discharge by the active (ballast) resistor while the precision welding

Authors

  • G. Bolotov Чернігівський національний технологічний університет, м. Чернігів,, Ukraine
  • R. Ryzhov КПІ ім. Ігоря Сікорського, м. Київ, Ukraine
  • M. Bolotov Чернігівський національний технологічний університет, м. Чернігів, Україна, Ukraine

DOI:

https://doi.org/10.20535/2521-1943.2018.83.124415

Keywords:

glow discharge, stable existence, precision welding, plasma, ballast resistor, diffusion bonding

Abstract

Purpose.Thepurposeofthis work is to determine the value of the external active (ballast) resistance switched on  the gas-discharge gap that provides stabilization of the burning process of a high-current glow discharge in regimes that are used in precision welding processes: discharge currents 1 ... 30 A, gas pressures  of 1.33 ... 13.3 kPa.

Approach.Using the methods of the theory of gas discharge physics, electrodynamics and electromagnetism, the main causes of the appearance of external perturbations and instabilities that lead to the emergence of a stable arc discharge on the local sections of the surfaces of the weldedpartsweredetermined.

Findings.The result of the work is the developed method of analytical determination of the optimal value of the external stabilizing resistance, which ensures a discrepancy between the calculated data and the similar ones obtained during the experiments at the level of 15 ... 20%.

Practically value.The results of the research are of interest for the enterprises of machine-building and instrument-making, power and electrical engineering industries in the manufacture of diffusion-welded assemblies of dissimilar materials in a gas-discharge plasma of a glow discharge of medium pressures

References

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Published

2018-10-26

How to Cite

[1]
G. Bolotov, R. Ryzhov, and M. Bolotov, “Stabilization of high-current glow discharge by the active (ballast) resistor while the precision welding”, Mech. Adv. Technol., no. 2(83), pp. 94–99, Oct. 2018.

Issue

No. 2(83) (2018)

Section

Original study

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