Special features of fused welding flux granular forming in carbon steel surfacing during plasma granulation

This paper proposes a qualitatively new approach for production fused welding fluxes in carbon steel surfacing based on direct-action plasma arc influence on a metal substrate and charge materials made from the Ural region raw minerals. During plasma granulation there is an intense burnout of alkali...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2019-04, Vol.510 (1), p.12013
Main Authors: Naumov, S V, Artemov, A O, Ignatov, M N, Belousov, K I
Format: Article
Language:English
Subjects:
Alkali metals
Carbon steel
Carbon steels
Charge materials
Granular materials
Granulation
Liquid potassium
Metal oxides
Plasma arc welding
Plasma jets
Slag
Submerged arc welding
Substrates
Surfacing
Welding fluxes
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Summary:This paper proposes a qualitatively new approach for production fused welding fluxes in carbon steel surfacing based on direct-action plasma arc influence on a metal substrate and charge materials made from the Ural region raw minerals. During plasma granulation there is an intense burnout of alkali metal oxides that is compensated by the use of liquid potassium and / or sodium glass as a binder of charge materials before granulation. Forming a slag crust on granules surface resulted in iron content exceeding more than 90 wt. % in the granule center. Otherwise without the formation of a slag on granules surface the iron was oxidized and its content reached 38.42 wt. % Studies have shown that the volume of granules that are completely coated and protected by slag crust on an oxide-silicate basis, reaches up to 95%. Such welding flux granules with a high content of metal components provide high performance (deposition rate) during repair works and surfacing of products using submerged arc welding.
ISSN:1757-8981
1757-899X
1757-899X
DOI:10.1088/1757-899X/510/1/012013