Research and Development > Technical Report > No.10 Special Issue on High Strength Steel Sheets > Development
of Ultra-low Spatter CO2 Gas-shielded Arc Welding Process “J-STAR® Welding”
No.10 Special Issue on High Strength Steel Sheets
Development of Ultra-low Spatter CO2 Gas-shielded Arc Welding Process “J-STAR® Welding”
KATAOKA Tokihiko IKEDA Rinsei YASUDA Koichi
Abstract
J-STAR® Welding is performed with an electrode negative polarity using a rare earth metal added wire in CO2 gas shielded arc. In the welding current over 250 A, a conical arc plasma was formed from the wire tip, and the droplets that transfer to molten pool became fine and continuous, what is called “spray transfer,” during J-STAR Welding. In the welding current under 200 A, application of waveform control of welding current realized periodic short circuit transfer. As a result, spatter generation was reduced to less than 10% in comparison with that of conventional CO2 gas shielded arc welding method.
Full Pages
