Train running on the railway track, in order to run fast and stable and safe, the key depends on the quality of the train wheelset maintenance. Axles, wheels, bearings are the three major components of the wheelset, and the axle renovator's task is to carry out fine inspection and repair of the three components, and to ensure excellence, so as to achieve conformity with the wheelset (bearings) of the technology and technical standards, so that the train runs fast and stable and safe.

Train wheel set maintenance process

In this maintenance assembly line, a qualified wheel (bearing) maintenance process is complex, first of all, with the wheel bearing unloading machine will have faulty bearings from the wheels down, then with the wheel axle microcomputer-controlled ultrasonic automatic flaw detector for the wheel for the azimuth of the physical examination of the detection of injuries, and then with the wheel wheel numerical control lathe on the abrasions, bruises, bias grinding of the uneven surface of the finishing spinning to restore smoothness, and then with the bearing press machine will be qualified bearing re-pressing Then the bearing press is used to re-press the qualified bearings, and the micro-control double-station bearing grinding machine is also used to carry out the grinding inspection.

Train wheel set flaw detection

When carrying out flaw detection, the one-button operation equipment will automatically carry out the steps of wheelset loading, liquid spraying and magnetisation, etc. With the assistance of ultraviolet light source, the metal surface of the whole wheelset can be clearly judged whether there are cracks or not just by observing the state of the magnetic suspension gathering with the naked eye.

Train wheel set wear detection

Next, the rail wheelset (bearings) for the wheel tread surface wear, bruise inspection and repair. "Overhaul of the wheel pair on both sides of the wheel diameter difference should not exceed 1 mm, roughness should not be greater than Ra25 micron

Train wheel set processing

The rail wheel will be placed in place, and then in the CNC operator box display screen input wheel turning reference point, axis, wheel diameter size, eat knife amount and other data, and then tap the OK button, the lathe automatically according to the pre-programmed procedures on the wheel processing; spinning wheel (bearings) to ensure that the quality of the wheel to meet the requirements of the assembly, it can be renovated, to be run after the experiment qualified can be loaded for use.