我厂在1978年把一台50千瓦的高温炉改成埋入式时,确定采用顶埋式单相四极双层条形也极,但我厂暂缺材料又急于上马。我们把拆下来的废电极重新加工成如图所示的结构。经一年多生产实践旺明,这种结构的电极具有以下优点:虽是单相二极,却起到了单相四极双层电极的作用,可减小炉膛上下温差, When I converted a 50 kW high-temperature furnace into a buried type in 1978, it was determined that the top-buried single-phase quadrupole double-layer bar was also very polar. However, I was short of materials and was in a hurry to launch the plant. We rework the disassembled waste electrode into the structure shown in the figure. After more than a year of production practice Wang Ming, the electrode structure has the following advantages: Although it is a single-phase two-pole, it has played a single-phase quadrupole double-layer electrode, can reduce the temperature difference between the upper and lower furnace,