Induction preheating of electrolytic tin plate (or flow brightening with high-frequency rotating equipment

MANY producers of tin plate, due to its large demand, are considering new or additional equipment. In order to flow brighten tin plate at high speeds, it is necessary to use high-frequency induction heating equipment. The other methods for producing tin plate, using combustible gases as a source of heat supply or resistance heating, are at present impractical at high speeds. To the author´s knowledge to date, a maximum line speed of approximately 600 feet per minute has been attained by resistance heating. Current is the limitation for obtaining high speeds by this method. By gas heating the maximum speed that has been attained is below that of resistance heating. Space is the speed limitation for gas heating.