ABSTRACT
This work consists in the study and development of the Controlled Current Short-circuiting MIG/MAG (or GMAW) Welding (CCC) with enphasis on the analyis tools designed specifically for this process. Currently, root pass in pipe welding is performed predominantly with SMAW, of inherent lower productivity. The semimechanized, slag free process herein developed (CCC) yields satisfactory properties welds with higher productivity, obtains the advantages of short-circuiting metal transfer and avoids its inconveniences by means of current waveform control, providing arc and weld pool stability with low welder training time. The developed software based CCC analysis tools are described.
KEY WORDS: root pass; pipeline; oil and gas transport; welding; productivity; mechanization.
Referência:
DUTRA, J. C. ; SILVA, Régis Henrique Gonçalves e ; GOHR JR, Raul ; OLIVEIRA, Moisés Alves de . Controlled Short-Circuiting MIG/MAG Welding Process (CCC) Applied to the Root Pass in theConstruction of Offshore Oil Pipelines Process Analysis Tools. In: The International Society of Offshore and Polar Engineers, 2006, São Francisco. ISOPE 2006, 2006. v. 01.