TIG welding process with dynamic feeding: a characterization approach

Wire forward and backward oscillation in automatic feeding tungsten inert gas (TIG) process have been pointed as a simple technique to achieve high productivity levels and process stability for a wider operation range, compared to the conventional version. However, in this case, physical aspects rel...

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Published inInternational journal of advanced manufacturing technology Vol. 96; no. 9-12; pp. 4467 - 4475
Main Authors e Silva, Régis Henrique Gonçalves, dos Santos Paes, Luiz Eduardo, Okuyama, Marcelo Pompermaier, de Sousa, Gustavo Luis, Viviani, Alberto Bonamigo, Cirino, Luciano Machado, Schwedersky, Mateus Barancelli
Format Journal Article
LanguageEnglish
Published London Springer London 01.06.2018
Springer Nature B.V
Subjects
Bead on plate welding
CAE) and Design
Computer-Aided Engineering (CAD
Dynamic stability
Engineering
Feeding
Gas tungsten arc welding
Industrial and Production Engineering
Mechanical Engineering
Media Management
Movement
Original Article
Rare gases
Temperature gradients
Thermography
Welding
Wire
Physical aspects
GTAW
Automatic feeding
Weld pool manipulation
Wire oscillation
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Summary:Wire forward and backward oscillation in automatic feeding tungsten inert gas (TIG) process have been pointed as a simple technique to achieve high productivity levels and process stability for a wider operation range, compared to the conventional version. However, in this case, physical aspects related to the involved phenomena are still not fully understood. Based on that, the present paper addresses a characterization analysis of low frequency dynamic wire feeding process, in order to yield some contribution to the knowledge gain of these phenomena. Both conventional automatic feeding and autogenous process were taken as a reference. The study covers system description as well as metal transfer modes, welding pool temperature gradient, and respective weld geometry. Bead on plate welding was performed and monitored with high-speed and thermographic cameras. Dynamic oscillation showed good stability and proved to be more flexible among other versions, as feeding speed and power do not need to be correlated. In order to enable proper wire dynamic movement monitoring, a special motion measuring system was developed.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-018-1929-6