The Effect of Technological Parameters on the Formation of Fillet Welds in Two-Electrode Submerged Arc Welding

The development of transport infrastructure contributes to an increase in the demand for bridge structures, which leads need productivity their manufacture. overall welding is facilitated by volume welds performed a single pass. It proposed use two-electrode welding. Computer analysis such process has shown that acceptable fillet weld formation can be ensured rational parameters process, including positioning electrodes relative weld. distance between should approximately equal required leg size, and shall turned angle 45 ° so electrode on web lags behind one flange, axis this located at half leg, tilt torch 30 from vertical. With indicated electrodes, asymmetrical pool formed, end strongly displaced web. melt runoff flange limited lower boundary pool, consequently, finishing solidification metal shifted towards This fact improves surface, reducing meniscus influx flange. Thus, decrease when arc placed explained asymmetric solidification, proceeds predominantly