Sheet metal container making – Method
Patent
1982-03-05
1985-04-02
Gilden, Leon
Sheet metal container making
Method
204 351, 428648, B21D 5126
Patent
active
045084807
ABSTRACT:
Tinplate container with externally welded seam is formed of electrolytic unreflowed tinplate with external tin coating of low coating mass (less than 2 g/m.sup.2); the solderability of such tinplate being comparable with conventional reflowed tinplate of much higher coating mass. The unreflowed tinplate of low coating mass may be produced by Halogen electrotinning process in which ratio of fluoride ions to stannous tin ions in the rinsing section is maintained at unprecedented high level (not less than 10:1), the pH of the rinsing agent is maintained at less than 4 and the current density of the electrodeposition current is in the range 600 to 1,600 amperes per square meter of strip steel.
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patent: 3997301 (1976-12-01), Yoshihara
patent: 4145263 (1979-03-01), Tsutsui
Gilden Leon
The Broken Hill Proprietary Company Limited
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