High speed welding of 0.5mm thickness alloy sheets using pulsed TIG welding

Micro-Hardness and Mechanical Properties of 5052 Aluminium Alloy Weldments Using Pulsed and Non-Pulsed Current Gas Tungsten ARC Welding

“…Pulsed Current Welding (PCW) is an additional advancement in the field of welding during the year 1960 as an alternative to constant current welding. Superior arc stability, decreased hot cracking sensitivity, fine grain size, slender heat affected zone, improved weld depth & width ratio, low porosity, regulated weld bead volume, less distortion and heat input, enhanced fusion zone control and reduced absorptive weld pool are the precise features of pulsed current welding process [1][2][3][4][5][6][7][8]. PCW is being extensively used in the aeronautical industry, manufacturing of rockets, rocket motors, missiles, and high-pressure storage tanks.…”

“…Not much work has been done on alloy steels welded with a pulsed current. Whatever has been done, is on the study of pulsed current affect, composition of shielded gas, weld shape and speed, joint strength, occurrence of weld defect while using PCW on 5083 alloy sheets [8], 304 and 310 stainless steel weldments angular distortion [9], to examine the microstructure [10] and weld bead geometry [11].…”

Micro-Hardness and Mechanical Properties of EN24 Alloy Steel Weldments Using Pulsed and Non-Pulsed Current Gas Tungsten Arc Welding

“…Pulsed current welding(PCW) was introduced in the late 1960s as a variant of constant current welding(CCW),PCW process has many specific advances over CCW, including enhanced arc stability, increased weld depth/width ratio, narrower heat affected zone (HAZ)range, reduced hot cracking sensitivity, refined grain size, produced porosity, low heat input, low distortion, controlled weld bead volume, less absorption of gas by weld pool and better control of the fusion zone [1][2][3][4][5][6][7][8]. Pulsed current welding technology has been welding used in fabrication of high pressure gas storage tanks, rocket motors, structures in aerospace applications such as air crafts, rockets and missiles.…”