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上海实验电炉厂生产的SX-12-16型1600℃高温箱式电阻炉所用的加热元件是硅钼棒(见图1),其规格为300×180×6×40mm,呈“U”型,每台炉装12支.硅钼棒冷端伸进异形耐火砖两孔内,露出65～70mm,固定后均匀悬挂于炉膛两侧及后侧,采用串联接法将冷端露出部分连接在一起,再与KSY-12D-18型可控硅温度控制器相接.由于硅钼棒材质很脆,且加热元件的“U”形部分与冷端圆棒接线部分是通过对焊连接的,所以接头往往不牢固,在安装和使用过程中极易造成断裂损坏.
The heating element used for the SX-12-16 1600 ℃ high-temperature box-type resistance furnace manufactured by Shanghai Experimental Electric Furnace Factory is a silicon molybdenum rod (see Figure 1). The specification is 300 × 180 × 6 × 40mm, Each furnace installed 12. Silicon molybdenum bar cold end into the shaped refractory brick two holes, exposing 65 ~ 70mm, after the uniform suspension on both sides of the furnace and the rear, the series connected to the exposed part of the cold junction together , And then with the KSY-12D-18 SCR temperature controller connected to the silicon molybdenum rod material is very brittle, and the heating element of the “U” -shaped part of the cold end of the round bar is connected by butt welding, so Joints are often not solid, easy to cause fracture damage during installation and use.