| 摘要 |
PURPOSE:To prevent the clogging in lifting pipes and to permit easy insulation, wiring, etc. in a device which conducts the molten metal in a melting furnace in the atm. air through the lifting pipes to the evaporation pan in a vacuum deposition vessel by providing an electromagnetic pump to the plural lifting pipes and a heater to the evaporation pan or the lifting pipes. CONSTITUTION:The molten metal 20 in a melting furnace 19 is sucked under vacuum through lifting pipes 17, 18 into the evaporation pan 13 in a vacuum vessel 12 where a material 11 to be plated travels. Said metal is auxiliarily heated by an auxiliary heater 16 attached to the pan 13 and is plated by vapor deposition on the surface of the steel strip 11. An electromagnetic pump 22 for moving the metal 20 attached to the pipe 18 is operated during said operation to move upward or downward the metal 20 in the pipe 18 thereby circulating forcibly the metal 20 between the pipe 18, the pan 13, the pipe 17 and the furnace 19. Stagnation of dross 24 on the inside and outside of the pipes 17, 18 is thus obviated and the clogging in the pipes 17, 18 is prevented. Since the heater 16 is attached to the outside of the pan 13, the measure for insulation, electric power wiring, etc. are accomplished extremely easily. |
