Relation between Surface Temperature and Reverse Side Bead Width in a Low Frequency Pulsed TIG Welding of Stainless Steel Plate

Study on Penetration Control of Weld (Report II)

Abstract

Surface temperature near the, rear end part of moicen pool in a low freqoncy pulsed TIG arc welding for thin thick stainless steel plates was measured with a PbS infrared radiation pyrometer.The dis-turbances of TIG arc on the temperature measurement at the-position about 5 mm away from the center of the arc was preventable at the time of the base current in the low frequency pulsed TIG welding. It was concluded from the temperature measurement that the mutual rleation existed between the surface temperature near the rear end part of the molten pool and thereverse side bead width.