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JOURNALS // Teplofizika vysokikh temperatur // Archive

TVT, 2018 Volume 56, Issue 1, Pages 3–13 (Mi tvt10732)

This article is cited in 14 papers

Plasma Investigations

Structure of the welding arc cathode spot with a nonconsumable electrode

A. E. Balanovskiy

Irkutsk State Technical University

Abstract: The cathode spot autographs on a glass surface are investigated through an electron microscope, with a magnification up to $100\,000$. We discover that the welding arc cathode spot consists of separate cells with the substructure, current channels, $10$$60$ nm in diameter. We acquire color photographs of the welding arc cathode spot with the cathode torch. Photograph processing through different filters reveals the shape of the cathode spot and the cathode torch. We perform the estimate calculations of the current density in the welding arc cathode spot substructure.

UDC: 533.6.011:533.9:537.5

Received: 13.07.2016
Accepted: 08.11.2016

DOI: 10.7868/S0040364418010015


 English version:
High Temperature, 2018, 56:1, 1–9

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© Steklov Math. Inst. of RAS, 2024