连续焊缝是指沿焊件接头全长连续焊接的焊缝，缝焊是用一对滚盘电极代替点焊的圆柱形电极，与工件作相对运动，从而产生一个个熔核相互搭叠的密封焊缝的焊接方法。
焊接采用二氧化碳保焊连续焊缝，型腔全密封，耐腐蚀。
Welding using carbon dioxide welding continuous welding seam, cavity seal, corrosion resistance.
设计了一种柔性导向焊缝动态跟踪装置，实现了超声波连续自动检测中焊缝的稳定动态跟踪。
A flexible guiding weld dynamic tracking unit is designed out and stable dynamic tracking of ultrasonic continuous automatic inspection is realized.
触点痕。由于供焊接电流的电极与管子表面间的电接触，致使在焊缝线附近产生不连续痕迹。
Contact mark. Intermittent marks adjacent to the weld line resulting from the electrical contact between the electrodes supplying the welding current and the pipe surface.
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