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现代X线机大多采用旋转阳极X线管。它与固定阳极X线管相比,具有容量大、焦点小,因而拍片清晰的优点。它的主要缺点在于每次曝光后,球管线圈虽已切断电源,但因惯性作用,阳极仍要继续旋转一段时间。如阳极转速为3,000转/分时,其惯性旋转可达半小时以上,当阳极转速在6,000～9,000转/分时,则可长达数小时之久。我们发现许多旋转阳极X线管,由于长期处在旋转状态,致使磨损失灵而不能使用。要减少球管故障的发生,就必须克服阳极惯性旋转。为了解决惯性旋转引起的无效磨损问
Most modern X-ray machines use rotating anode X-ray tubes. Compared with the fixed anode X-ray tube, it has the advantages of large capacity, small focus, and clear film. Its main disadvantage is that after each exposure, although the bulb coil has cut off the power supply, the anode still needs to rotate for a while due to inertia. If the anode rotation speed is 3,000 rpm, its inertial rotation can be more than half an hour. When the anode rotation speed is 6,000 to 9,000 rpm, it can be as long as several hours. We have found that many rotating anode X-ray tubes are not able to be used due to long-term rotation, resulting in loss of wear. To reduce the occurrence of tube failure, it is necessary to overcome the inertial rotation of the anode. In order to solve the invalid wear caused by inertial rotation