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Type: Journal article
Title: Coating composition, weld parameter and consumable conditioning effects on weld metal composition in shielded metal arc welding
Author: Coniglio, N.
Linton, V.
Gamboa, E.
Citation: Science and Technology of Welding and Joining, 2010; 15(5):361-368
Publisher: Maney Publishing
Issue Date: 2010
ISSN: 1362-1718
Statement of
N. Coniglio, V. Linton and E. Gamboa
Abstract: Pipeline construction has been moving towards the use of higher strength low carbon steels as these become available. In order to achieve the required high strength and toughness to match those of the parent pipe, girth weld metals have to rely mostly on their composition. The aim of the present study was to characterise the influence of the consumable chemistry and moisture content, and the welding parameters on the composition of weld metals produced by E8010 and E9010 shielded metal arc (SMA) cellulosic consumables. The alloying compounds in the consumable coating were isolated using a caustic soda solution, analysed with electron backscattered diffraction and identified as a variety of oxides. Making use of a mechanised SMA welding machine, the effect on weld metal alloying element contents of the welding conditions was evaluated. Smaller welding arc voltages and lower consumable coating moisture content produced weld metals with richer chemistry. The element transfer mechanisms from the consumable coating to the weld metal are also discussed.
Keywords: Shielded metal arc welding; Cellulosic consumable; Element transfer; Cellulosic coating analysis
Rights: © 2010 Institute of Materials, Minerals and Mining
RMID: 0020100625
DOI: 10.1179/136217110X12731414739952
Appears in Collections:Mechanical Engineering publications
Materials Research Group publications

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