Search Results for weld current

Fig. 4 Plot of weld d / w ratio versus weld current for the starting base metal (type 304 stainless steel with very low residual impurity content) as well as for zones doped with sulfur and selenium. Source: Ref 7 More

Fig. 4 Plot of weld d/w ratio versus weld current for the starting base metal (type 304 stainless steel with very low residual impurity content) as well as for zones doped with sulfur and selenium. Source: Ref 7 More

Fig. 2 Plot of weld time versus secondary weld current to obtain weldability lobes for selected 0.8 mm (0.03 in.) thick steels. Electrode parameters: force, 1.8 kN (0.20 tonf); tip diameter, 5.0 mm (0.20 in.) More

Fig. 7 Indirect spot weld. Current flows along the length of the bottom section (rather than through it, as in the case of direct spot welds). More

Fig. 10 Weld current profiles for seam welding. (a) Ideal impulse shape. On-time is 75% of impulse period, while off-time is 25% of impulse period. (b) Actual impulse shape is typically complex and nonideal. In this specific case, impulses are from an alternating current single-phase (3 on/1 More

Fig. 39 B-scan and faying surface of a cold weld. Current = 5500 A More

Fig. 40 B-scan and faying surface of a cold weld. Current = 6500 A More

Fig. 8 Weld current profiles for seam welding. (a) Ideal impulse shape. On-time is 75% of impulse period while off-time is 25% of impulse period. (b) Actual impulse shape is typically complex and non-ideal. In this specific case, impulses are from an ac single-phase (3 on/1 off) current source. More

Fig. 5 Effect of variation in welding current on weld bead profile. (a) Excessively low current. (b) Excessively high current. (c) Recommended current More

Fig. 10 Tandem gas metal arc welding current waveforms showing asynchronous current pulsing. Courtesy of Edison Welding Institute More

Fig. 3 Typical ac welding current waveforms. (a) Sine wave alternating current, simple transformer welder. (b) Modified sine wave obtained from magnetic amplifier-type welder. (c) Square wave, line frequency, and balanced dwell. (d) Square wave with unbalanced dwells, EP versus EN. (e More

Fig. 6 Example of welding current waveform for pulsed gas metal arc welding More

Fig. 1 Measured waveforms of welding current for resistance spot welding. (a) Single-phase alternating current. (b) Single-phase direct current. (c) Three-phase direct current. (d) Medium-frequency direct current. Source: Ref 3 More

Fig. 15 Welding current power spectra for globular transfer and spray transfer modes during gas metal arc welding of steel. Source: Ref 1 More

Fig. 8 Typical relationship between wire feed speed and welding current for several steel electrode diameters. DCEP, direct current electrode positive More

Fig. 13 Effect of welding current on bead shape More

Fig. 2 Effect of welding current on penetration with and without the penetration-enhancing compound (DeepTIG, Edison Welding Institute) More

Fig. 2 Tolerance to variation in welding current and plasma gas flow rate in pulsed- and continuous-current keyhole welding; boundaries show the welding parameter combinations at which specific defects are likely to occur. Welding parameters: nozzle bore, 2.36 mm (0.0929 in.); electrode More

Fig. 7 Typical slope control pattern for welding current and plasma gas flow when starting and closing a keyhole; example is for 9.5 mm ( 3 8 in.) thick steel More

Fig. 9 Functional relation among welding current ( I ), potential ( V ), and wire-feed rate ( W ) for electroslag welding of 2 1 4 Cr-1Mo steel. Line indicates value of I = BW 1/2 V 1/3 for B = 60.8 and r = 0.923. Source: Ref 14 More