Maintenance Of Tension And Torsion Fatigue Testing Machine1

The tension-torsion fatigue testing machine is designed to perform static and dynamic two-way testing of shaft materials, and its applications include tension compression technology and fatigue testing or high utilization rate. The load frame structure is designed for the maximum torsional stiffness of the axial/application.

1. Regularly replace the filter element of the oil circuit and clean up the deteriorated oil electro-hydraulic servo pressure tester. Since this failure is caused by metal contamination in the hydraulic oil, regularly replace the filter element in the oil circuit of the system and drain the oil in the oil filter, which can prevent dirt from entering the servo valve, effectively prevent the occurrence of faults and extend the operation time of the servo valve. The torque motor and pilot valve * are immersed in the oil that is connected with the return oil, and the position is at the blind end of the pipeline, so the oil there is almost no flow, easy to oxidize and deteriorate, so it is necessary to drain the deteriorated hydraulic oil regularly;

2. Replace the hydraulic oil regularly and strengthen the management of the hydraulic oil. The hydraulic oil will be oxidized and coking in the long-term operation, and the wear of the pump, valve and cylinder in the hydraulic system will produce some metal chips, which will reduce the quality of the hydraulic oil and cause failure. According to the service cycle of hydraulic oil and the oil test results in recent years, the hydraulic oil should be replaced every 10 months to ensure that the equipment has no unplanned shutdown;

3. The direct cause of some faults of the servo valve replaced regularly is that the torque motor is polluted, which leads to the poor action of the servo valve. Therefore, the torque motor and the pilot valve should be cleaned and replaced regularly to prevent pollution, so as to prevent the occurrence of faults. The assembly and disassembly of servo valve should be carried out in a clean environment as possible. During the operation, the electrical signal received from the servo valve should be removed first, then the pressure of the hydraulic system should be removed, and then the servo valve should be removed. Clean all parts in clean and compatible commercial solvent, and the parts can be dried in the air or blown dry with clean and dry air with a soft air pipe. The cleaned servo valve can be used as spare parts in turn to reduce costs;

4. Replace the sealing ring regularly and check whether there is oil leakage at the main engine and oil source. If there is oil leakage, replace the sealing ring or combination gasket in time;

5. Regularly replace the filter element Hydraulic filter element Overview The hydraulic filter element is used in the hydraulic system to filter the particles and rubber impurities in the system, ensure the cleanliness of the hydraulic system, and regularly replace the oil suction filter and filter element according to the use of the machine and the service life of the oil.