Word: remelting
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...sheet three-feet wide, passed through a furnace at 1,300 feet per minute-enough to cover an entire football field every 18 minutes. But the plated coating is not perfect. Dull grey, its porosity and corrosion resistance are not satisfactory. To complete the process it is necessary to remelt the thin skin of tin momentarily, so that it renews to make a smoother, tougher surface...
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