A double-gun horizontal seam bottom
welding machine for a boom cylinder includes a base frame plate, weldment positioning seats arranged side by side are installed on the base frame plate, weldment clamping seats are installed at both ends of the base frame plate in the length direction, the weldment clamping seats can move along the length direction of the base frame plate, and each weldment clamping seat is installed with a chuck that can be lifted vertically, and the chuck can clamp and rotate the weldment. The base frame and the weldment positioning seat thereon, a movable weldment clamping seat is arranged on the base frame, a chuck that can be lifted vertically is arranged on the weldment clamping seat, the chuck can clamp and rotate the weldment, and movable
welding mechanisms are arranged on both sides of the base frame in the length direction, and the
welding mechanisms on both sides can weld the welds on both sides of the weldment at the same time, which not only improves the efficiency of the welding operation, but also avoids deformation and arching caused by single-side welding, ensures the quality of the overall welding, and ensures the qualified performance of the boom.