| 摘要 |
PURPOSE:To produce a conductive core with a uniform surface highly efficiently at a low cost by annealing a belt-like continuous unwoven fabric made of metal fibers under a suspended state through the first vertical furnace then sintering it in the second vertical furnace. CONSTITUTION:A belt-like unwoven fabric 2 made of metal fibers is suspended downward from above so that no tensile force other than its self weight is applied, is introduced into the first vertical electric furnace 3, the air in the unwoven fabric 2 is substituted in a gas substituting room 7, and the unwoven fabric 2 is heated and annealed in a heating room 8, then it is cooled and taken out. Next, it is compressed to a predetermined thickness with press rolls 4, is introduced into the second vertical electric furnace 5, and is sintered in the heating room 8 to form a conductive core for alkaline battery. Therefore, by using the vertical electric furnaces 3, 5, the floor area of a facility is largely reduced, no tensile force is applied to the unwoven fabric 2, thus unifying its furnace, and the productivity can be improved. |
