我厂自80年4月份起,用硅酸铝耐火纤维毡前后三次共改造了总装机容量为1290瓩的十三台电阻炉。改造后,空炉升温阶段,平均省电、省时50%;工件加热保温过程中,省电10%～20%。在两年多时间里,共省电80万度。具体改造、测试过程及节电效果小结如下: Since April 1980, our factory has reformed a total of 13 resistance furnaces with total installed capacity of 1290 前 three times before and after using aluminum silicate refractory fiber felt. After the transformation, the empty furnace heating stage, the average power, saving 50%; workpiece heating and insulation process, saving 10% to 20%. In more than two years, a total of 800,000 power-saving. Specific transformation, testing process and energy-saving effect are summarized as follows: