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X线管阴极故障多为灯丝断路,或者阴极灯丝引出线近管壁处断线,偶有因灯丝制造工艺问题,短期使用后与集射罩短接。新的X线管,短时间使用后,很粗的灯丝引线与管内阴极金属固定架短接是罕见的。现将我们检修的一支介绍如下. 某医院正常使用之上海SG200mA诊断X线机,为提高X线机使用效率,将原有的国产旋转阳极X线管取下,代以英国DYNAMAX“25”旋转阳极X线管。两管的灯丝加热电压、电流数值相近似,管球直径粗细、长轴的长短也相似。X线管支架上
X-ray tube cathode failure mostly for filament circuit, or cathode filament leads near the wall at the break, sometimes due to the filament manufacturing process problems, short-term use and set shoot mask shorted. The new X-ray tube, after a short period of use, very thick filament leads and short-circuit the cathode metal holder is rare. Now an overhaul of our hospital is as follows: A Shanghai hospital SG200mA diagnostic X-ray machine is used normally in order to improve the efficiency of the X-ray machine. The original domestic X-ray tube of the rotating anode is removed and replaced by DYNAMAX “25” Rotate the anode X-ray tube. Two filament heating voltage, current values similar to the diameter of the tube diameter, the length of the long axis are similar. X-tube bracket