| 摘要 |
<p>Cylindrical container bodies, or cans, having welded sideseams are formed from sheet steel blanks (17) having a thin coating (12) of nickel, or a coating of nickel containing up to about 12% zinc, on each side. The nickel coating (12) extends completely to the edges of the blanks (17) which are formed into a cylindrical configuration with the side edges slightly overlapping. The overlapped edges of the respective blanks are then welded, preferably by a wire mash welding process, to produce a welded seam (28) having a thickness substantially less than twice the thickness of the metal blank. Prior to welding, the nickel-plated steel may be chemically treated in a dichromate or chromic acid solution, with the chemical treatment (14) also extending completely to the edges to be welded. Power requirements for welding the material are substantially less than for tin plate.</p> |
