日本从1973年发生石油危机以后,燃料费用大幅度增加,人工费也有所增加。在工业生产上,节省能量和机械化的问题是急待解决的迫切问题。在工厂中,加热设备消耗大量的热能,因此日本想尽办法采用节省能量的加热炉。在日本初期的铝加热炉是小型的,即带坐架的链式连续加热炉。随着压延工厂生产率的增大,炉子尺寸逐年增大。板坯从几吨到10吨 Since the oil crisis in Japan in 1973, the cost of fuel has increased substantially and labor costs have also risen. In industrial production, the issue of saving energy and mechanization is an urgent issue to be solved urgently. In factories, heating equipment consumes large amounts of heat, so Japan has tried its best to use energy-saving furnaces. In Japan, the initial aluminum heating furnace is a small, that is, with a rack-mounted chain of continuous furnace. As the rolling mill productivity increases, the size of the furnace increases year by year. Slab from a few tons to 10 tons