METHOD TO REDUCE WELDING DISTORTION AT SERIES WELDING OF THICK SHEETS Russian patent published in 1998 - IPC

FIELD: mechanical engineering; welding; manufacture of large-size thick-walled structures. SUBSTANCE: welding is carried out by means of several electrodes arranged at a distance from each other in direction of welding. Welding conditions are set depending on designed parameter P which depends on strength of current voltage, welding speed and number of electrodes, and should not exceed 0.14. If run-on plates are used at welding, additional parameter P_tab is calculated which depends on thickness of plates, welding current, voltage and other characteristics and should not exceed 0.26. EFFECT: enlarged operating capabilities. 7 cl, 7 dwg, 4 tbl