| 摘要 |
PURPOSE:To increase the accuracy of the curve plate with reinforcing material efficiently by making the length of the column which is vertically arranged on plural reference points on the reference plane in the prescribed dimension and after performing the tack welding of the reinforcing material and curved plate by performing a self- advancing type automatic welding by withdrawing those besides the necessary column. CONSTITUTION:The length of the column vertically arranged on plural reference points of the above of a reference plane 1 is made in the length upto a curved plate 3 or reinforcing materials 4, 5. The upper end or lower end of the reinforcing materials 4, 5 is subjected to a tack welding on this column and the curved plate 3 is subjected to a tack welding thereon. Those columns which are unnecessary are then withdrawn. The welding is performed by traveling a self-advancing automatic welding machine on this wide master flat plane 1. The curved face dimension accuracy of the curved plate becomes worse and the efficiency in welding work is extremely bad in case of performing the main welding after performing the tack welding of the reinforcing material on the curved plate supported by the conventional column in the prescribed size, but the welding of good efficiency and dimensional accuracy is made possible by the above method.
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