B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
113/33
B23K 11/06 (2006.01) B23K 11/30 (2006.01) B23K 35/02 (2006.01)
Patent
CA 1251692
Abstract A method of making a can body whereby overlapping edge portions of a pre-formed blank are electrically mash- seam welded using a pair of wire electrodes abutting on both surfaces of the overlapping portions of the can body. The electrodes are held in position against the can body by electrode rollers and preferably are formed of a continuous copper wire. The cross-section of each electrode is formed such that at least one electrode has a flat main portion and a marginal projection including a slope contiguous to the flat main portion abutting on the overlapping portion of the can body. A slope between the flat portion and the marginal projection of the electrode allows the material of the edge of the can body to flow outwardly in circumferential directions during mash-seam welding, resulting in an improved weld strength and quality.
495954
Akae Yoshiteru
Kitamura Yoichi
Togo Yoshiro
Fetherstonhaugh & Co.
Toyo Seikan Kaisha Limited
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