High Efficiency Processes in Automatic Welding(Physics, Processes, Instruments & Measurements)

概要

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The recent trends of high efficiency welding processes in automatic welding systems in Japanese heavy industries are reviewed. Metal type flux cored wires with CO_2 shielding, high speed rotating GMAW and He mixed MAG have been applied in thick materials with high deposition rates. High current, 2-tandem one side GMAW robots have been developed, with adaptive welding parameter control for change of groove width and joint slope, and applied in curved shell assembly in shipyards. High speed 2-tandem GMAW on primer coated fillet joints has been applied with decreased incidence of blow holes. As for tandem SAW, 4-tandem one sided high speed processes in shipyard, and 3-tandem very deep penetration processes for steel box column assembly have been developed and applied. Non-consumable nozzle electroslag, and simplified electrogas welding have been applied in column assembly. Narrow gap welding processes with GMA, SA and TIG have been applied for heavy thick material. Multi-robot welding systemization has been developed for fabrication in heavy industries.
大阪大学の論文