Advanced Gas Tungsten Arc Weld Surfacing Current Status and Application

Gas Shielded Tungsten Arc Welding (GTAW)-a process well-known providing highest quality weld results joined though by lower performance. Gas Metal Arc Welding (GMAW) is frequently chosen to increase productivity along with broadly accepted quality. Those industry segments, especially required to pro...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Soldagem & Inspeção 2015-09, Vol.20 (3), p.300-314
Hauptverfasser: Egerland, Stephan, Zimmer, Johannes, Brunmaier, Roland, Nussbaumer, Roland, Posch, Gerhard, Rutzinger, Bernd
Format: Artikel
Sprache:por
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Gas Shielded Tungsten Arc Welding (GTAW)-a process well-known providing highest quality weld results joined though by lower performance. Gas Metal Arc Welding (GMAW) is frequently chosen to increase productivity along with broadly accepted quality. Those industry segments, especially required to produce high quality corrosion resistant weld surfacing e.g. applying nickel base filler materials, are regularly in consistent demand to comply with "zero defect" criteria. In this conjunction weld performance limitations are overcome employing advanced 'hot-wire' GTAW systems. This paper, from a Welding Automation perspective, describes the technology of such devices and deals with the current status is this field-namely the application of dual-cathode hot-wire electrode GTAW cladding; considerably broadening achievable limits.Original Abstract: Gas Tungsten Arc Welding (GTAW) e um processo bem conhecido por proporcionar alta qualidade da solda mas juntas com menor desempenho. Por isto o Gas Metal Arc Welding (GMAW) e frequentemente escolhido para aumentar a produtividade, considerando que a qualidade e tambem amplamente aceitavel. Segmentos da industria, especialmente aqueles que requerem a producao de revestimentos resistentes a corrosao com alta qualidade, por exemplo, aplicando material de enchimento a base de niquel, estao regularmente sob consistente demanda para atender os criterios "zero defeito". Neste contexto, limitacoes na soldagem podem ser superadas com o emprego de sistemas avancados GTAW 'arame-quente'. Este artigo, sob a perspectiva da automacao da soldagem, descreve a tecnologia de tais sistemas e apresenta o estado da arte nesse campo - principalmente quanto a aplicacao do revestimento por GTAW com dois catodos e arame quente, que amplia consideravelmente os limites alcancaveis do processo.
ISSN:0104-9224
1980-6973
DOI:10.1590/0104-9224/SI2003.05