| 摘要 |
PURPOSE:To obtain a uniform packing density in the stage of charging flux into a steel strip in a process of forming said strip into a cylindrical shape by inclining the steel strip to a collapsing angle of the flux and subjecting the butt part of the outside periphery of the steel strip to seam welding. CONSTITUTION:The steel strip 1 is so formed by rollers 2, 3 as to be made into the cylindrical shape and the flux is charged to the inside thereof from a hopper 4 in the stage when the formation thereof is not completed. The above-described strip 1 is inclined to the angle above the collapsing angle of the flux in said discharging part. The aperture part of the wire is drawn and closed by rollers 5, 5 in the position of said charging part or near the same and the butt part is subjected to the seam welding. |
