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目前许多工厂热处理车间里所使用的箱形电阻炉,在加热过程中没有保护气氛,工件氧化脱碳严重,不能适应齿轮类成品的热处理。近年来,我们把该种箱形电阻炉改造成一种简易的保护气氛箱式炉,能加热各种规格的螺旋伞齿轮,获得了比较满意的结果。该箱式炉能产生所需要的碳势(或碳氮气氛):能保证供应产生保护气氛的原料;能按不同的要求,调节出不同的气氛。现着重介绍X-75B的结构和使用情况。
At present, many box-type resistance furnaces used in the factory heat treatment workshop have no protective atmosphere during the heating process. The workpiece is seriously oxidized and decarburized and can not be adapted to the heat treatment of the gear type finished product. In recent years, we have transformed this kind of box-type resistance furnace into a simple box furnace with protective atmosphere, which can heat all kinds of spiral bevel gears and get satisfactory results. The box furnace can produce the required carbon potential (or carbon and nitrogen atmosphere): to ensure the supply of raw materials to create a protective atmosphere; according to different requirements, to adjust the different atmosphere. Now highlight the structure and use of the X-75B.