"Manual flaw detection uses the principle of ultrasound, and my job is to determine the cause of the failure based on the reflected graphics." On April 20, in the wheel axle workshop of the Taiyuan Depot of taiyuan bureau group company, Gong Xianzhong pointed to the constantly jumping waveform on the screen.
Manual flaw detection of passenger train wheelsets is an important part of the vehicle maintenance process in order to improve the quality of operation. Before each operation, Gong Xianzhong has to debug and maintain 5 inspection probes on the standard wheelset, and the debugging probe not only lubricates the probe surface, but also records and analyzes the feedback waveform according to the different positions of the wheelset.
During the flaw detection process, it is not only necessary to achieve high precision, but also to use daily work experience to eliminate interfering information. To achieve both hand and eye, the passenger train wheelset looks like a large barbell, in order to ensure that each part can be checked in place, Gong Xianzhong in his hand with the probe to measure at the same time, the eyes also stare at the waveform image on the display screen, in the seemingly little change in the waveform map, accurate judgment.
Several probes of different shapes are connected to the screen of the ultrasonic flaw detector to check the working status of different parts of the wheelset, and the corresponding waveforms in different positions are constantly changing. For Gong Xianzhong, the flexible use of mathematical function formulas is the key to improving the efficiency of maintenance. While ensuring his own ability, Gong Xianzhong always puts the cultivation of young workers in the first place. For the sake of everyone's business skills, Gong Xianzhong used to explain the abnormal waveforms he faced in reality as a typical case every time he gave a lecture to help them improve their business level.
"Master Gong is very patient, and I can achieve the results I have now, thanks to his help and guidance." In the face of Gong Xianzhong's strict guidance, the apprentice Fan Pengfei had the most right to speak, in order to help himself achieve a good rank in the skill competition, the master used the off-duty time to rush to the unit to conduct one-on-one tutoring for himself, and the two of them started from the action essentials and technical standards and practiced item by item. In the end, Fan Pengfei won the first place in practical operation and the third place in the comprehensive results in the skill competition of the State Railway Group, and was commended by the unit, looking at the harvest of the apprentice Fan Pengfei, Master Gong Xianzhong felt that all the efforts were worth it.
In the more than 20 years of manual flaw detection, Gong Xianzhong has helped the unit cultivate a large number of professionals in flaw detection with practical actions, and comprehensively improved the maintenance quality of the moving bus wheelset through accurate "consultation" of the bus wheelset, and he himself has become a veritable train "doctor". (Correspondents: Yao Wenlong, Wang Mingxuan)