我厂试制了一台大型真空钨丝电阻炉,该炉钨丝网发热体及其部件采用焊接方法连接而成。要求所有焊缝能够经受220℃高温下使用的要求,因此焊接质量的好坏直接影响发热体的使用寿命。发热体由六片已组装的钨丝网,其一端通过内外两只钨圈与电极板和加强板焊接而成(图1、图2)。发热体采用分片组装和总装,分 I plant trial of a large vacuum tungsten resistance furnace, the furnace tungsten wire heating element and its components are connected by welding methods. All welds are required to withstand the use of 220 ℃ high temperature requirements, so the quality of welding directly affect the life of the heating element. The heating element consists of six pieces of assembled tungsten mesh, one end of which is welded to the electrode plate and the stiffener by two inner and outer tungsten rings (Figure 1, Figure 2). Heating elements using chip assembly and assembly, points