“一点不差，差一点不行” 高温下的毫厘较量

Core Viewpoint - The article highlights the meticulous work of a railway wheel axle technician, emphasizing the critical importance of precision in ensuring the safety and reliability of railway freight operations during peak seasons. Group 1: Quality Control and Precision - The technician is responsible for measuring the interference fit between the bearing and axle diameter, which must be between 0.050 to 0.102 millimeters to prevent accidents like axle breakage [3] - The acceptable interference between the bearing rear stop and the dust cover seat is strictly limited to a range of 0.018 to 0.085 millimeters, which is finer than a human hair [3][4] - A minor deviation in the assembly surface, such as a 2-millimeter tilt in the oil seal, can lead to significant operational failures, including overheating and axle breakage [4] Group 2: Work Environment and Challenges - The technician works in a high-temperature environment, with outdoor temperatures reaching 38°C and workshop temperatures around 30°C, yet maintains a high level of attention to detail [3][5] - During the peak summer transportation season, the technician and colleagues work overtime, assembling up to 150 wheel sets daily to ensure the safety and efficiency of railway freight operations [5] Group 3: Professional Background and Work Ethic - The technician's previous experience as a military personnel has instilled a rigorous work ethic, emphasizing the importance of precision and safety in his current role [4] - The motto "a slight difference can lead to significant problems" reflects the technician's commitment to quality and safety in railway operations [4]