conductedBy Gött, Gregor Person INP Greifswald Institute Leibniz Institute for Plasma Science and Technology (INP) Institute Uhrlandt, Dirk Person Zhang, Guokai Person
describesMaterialEntity S235 Target tungsten strip lamp Diagnostic Device wire material ER70 S-6 Target workpiece Target
hasTarget Mild Steel Target S235 Target weld pool Target wire anode Target wire material ER70 S-6 Target workpiece Target
hasTopic GMAW Research Topic High-current arc Research Topic Joule heating Research Topic anode energy Research Topic droplet temperatures Research Topic sheath voltage Research Topic
investigates Joule heating arc radiation change of shape change of temperature droplet detachment energy delivery energy transfer voltage fall
involves Arc Plasma Plasma CO2 Medium Mild Steel Target S235 Target droplet high-current arc Plasma iron weld pool Target workpiece Target
usesConfiguration MotionPro Y4 camera settings: frame rate of 6000 fps, exposure time of 160 us, measurement range between 1600 and 3400 K Narrow band filters with the central wavelengths 675 and 925 nm Shielding gas Ar+2.5% CO2, gas flow rate 15 l/min, atmospheric pressure Welding parameters: pulsed process in DC-mode, one-drop-per-pulse process, wire 1.2 mm in diameter, wire feed speed 3 to 6 m/min, welding speed 30 cm/min, contact tip setback 3 mm, contact-to-workpiece-distance (CTWD) 9 to 21 mm, peak current (I) 300 to 650 A, base current 25 A, pulse frequency 50 to 130 Hz, pulse duration 1 to 1.5 ms
usesDevice Bernard BTB MIG Gun, Bernard Plasma Source Miller Auto-Axcess™ 450 Plasma Source MotionPro Y4 Diagnostic Device Tektronix DPO4104 Diagnostic Device Tektronix TCP404XL Diagnostic Device Tektronix TDP0500 Diagnostic Device tungsten strip lamp Diagnostic Device
usesMethod Bead-on-plate welding Method Canny edge detection method Diagnostic Method Electrical Measurements Diagnostic Method High-Speed Imaging Diagnostic Method High-Speed Two-Color Pyrometry Diagnostic Method analysis of the droplet surface temperature and geometry Diagnostic Method current measurement Diagnostic Method energy balance calculation Diagnostic Method estimation of Joule heating from surface temperature measurements Diagnostic Method gas metal arc welding Method non-intrusive optical methods Diagnostic Method pulsed GMAW process Method pyrometry of the wire Diagnostic Method voltage measurement Diagnostic Method