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METHODS OF IMPROVING THE QUALITY OF THE WELDING DEPOSIT BY USING A -SACRIFICE LAYER"

Dumitru Titi Cicic, Corneliu Rontescu, Ana Maria Bogatu, Cristina Maria Dijmarescu

First published: 2017-06-20https://doi.org/10.5593/sgem2017/61/s24.030View metrics

Abstract

The paper presents and analyzes the experimental results obtained by the welding reconditioning of a pressure vessel made of 14CrMoV4, a Romanian trade of steel, which is the equivalent of 13CrMo4-5, in the European norm 10028-2/2009, steel, which functioned for a long period of time in the energetic industry. The welding process used for reconditioning is robotized gas metal arc welding (GMAW). A series of samples were realized using different technological parameters in order to obtain different geometrical configurations of the welded beads and to establish the optimum reconditioning technology that can be applied industrially with a high rate of repeatability. The filler material was selected taking into account a series of criteria, such as chemical compatibility, mechanical compatibility, etc. The proposed method consists in applying a sacrifice layer over the last deposited layer in the reconditioned area. Qualitative and quantitative comparisons are made between the results obtained after changing the technological parameters used to deposit the sacrifice layer, regarding the extent of the Heat Affected Zone (HAZ), hardness and geometrical characteristics of the obtained deposit. Through the analysis method it is aimed to avoid the post reconditioning heat treatment imposed by the welding reconditioning technologies.

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Publication details

Title
METHODS OF IMPROVING THE QUALITY OF THE WELDING DEPOSIT BY USING A -SACRIFICE LAYER"
Authors
Dumitru Titi Cicic, Corneliu Rontescu, Ana Maria Bogatu, Cristina Maria Dijmarescu
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Nano, Bio and Green - Technologies for a Sustainable Future
Publisher
STEF92 Technology
Year
2017
Pages
225-232
SWS Citekey
Cicic201724225232
ISSN
1314-2704
ISBN
978-619-7408-12-6
Language
en
Publication type
Conference Paper
Keywords
reconditioningweldingsacrifice layerqualityHeat Affected Zone
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