Aspects Regarding the Characterization of the Gouged Surface

Abstract:

The paper presents results of the researches conducted upon the use of the arc-air gouging process with coated electrodes, in comparison with the plasma gouging process, in case of the welded structures. The paper aims at submitting the arc-air gouging technologies with electrodes and the plasma gouging technologies. The research consists in gouging a structural steel, of the quality S275JR and in comparing the surfaces obtained by the enumerated processes. The obtained samples will be analyzed in terms of microstructure, macrostructure, hardness of the thermally influenced area, hardness of the gouged area.The gouging process is based on melting the raw material, with an electric arc achieved between an electrode and the raw material; and on removing the melt material with a compressed-air jet, in the case of the arc-air gouging and plasma gouging. The gouging with coated electrode is different, given that it requires special electrodes, with thick flux cover, in order to generate an electric arc and a strong gas flux. During the gouging process, the raw material will be oxidized; yet, this does not influence the process. The gouging process can be either manual or automated. In this paper, the manual variant will be submitted, in the case of the arc-air gouging technology and the gouging with coated electrodes; in the case of the plasma gouging, both variants will be submitted.

• Periodical: Advanced Materials Research (Volume 1128)
• Pages: 217-223
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1128.217
• Online since: October 2015
• Authors: Barna Fazakas*, Radu Cristian Seculin, Teodor Machedon-Pisu, Alin Pop
• Keywords: Gouge, Gouging Technology, Microstructure, Toughness

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