CO_2气体保护焊可用于不同板厚及各种位置的焊接。但如果规范参数选择不当,则会引起各种缺陷,增加返修工时,降低生产效率。 1.焊接电流焊接电流是影响生产效率的最主要因素。增加焊接电流,可提高熔深和焊丝的熔化速度。随着焊接电流的增大,熔深、焊道宽度、加强高等也随之增大。由于熔深不同,焊缝的稀 CO_2 gas shielded welding can be used for different thickness and a variety of welding positions. However, if the improper selection of standard parameters, it will cause various defects, increase repair man hours and reduce production efficiency. 1. Welding current Welding current is the most important factor affecting the production efficiency. Increasing the welding current can increase the penetration and the melting rate of the wire. With the increase of welding current, penetration depth, weld bead width, strengthening higher will also increase. Due to different penetration, weld thin