1. Cleaning and cleaning: In the process of testing, some dust, such as oxide scale and metal scrap, will inevitably occur. If it is not cleaned in time, it will not only cause wear and scratch on the surface of some parts, but also Seriously, if these dusts enter the hydraulic system of the electro-hydraulic servo universal testing machine, it will have very serious consequences such as blocking the valve hole and scratching the surface of the piston. Therefore, cleaning after each use is very important, and it is necessary to keep the testing machine clean;
2, use the appropriate fixture to complete the corresponding test, otherwise not only the test will not be very successful, but also damage the fixture: electro-hydraulic servo universal testing machine is generally only equipped with a standard sample fixture, if you want to do non-standard sample For example, steel strands, lap joints, etc., must be equipped with suitable fixtures; there are some ultra-hard materials, such as spring steel, etc., must use special material clips, otherwise it will damage the fixture;
3, hydraulic oil: must always check the tank level and timely replenishment; generally need to change the oil every 2000 to 4000 hours; however, the most important thing is that the oil temperature must not exceed 70 ° C, when the oil temperature exceeds 60 ° C must be turned on cooling system;
4. Filter: For filters without a clogging indicator, it should be replaced every 6 months. For filters with clogging indicators, keep monitoring and replace them when the indicator is alarmed;
5. Accumulator: Some electro-hydraulic servo universal testing machine is equipped with accumulator. It is necessary to ensure that the accumulator pressure is in normal working condition. If the pressure is not enough, the pressure needs to be replenished immediately; only the accumulator is filled with nitrogen. ;
6, periodic inspection of components: all pressure control valves, flow control valves, pump regulators and pressure relays, travel switches, thermal relays and other signal devices, must be regularly checked;
7. Cooler: The scale of the air-cooled cooler should be cleaned regularly; if it is water-cooled, it should be observed regularly that the cooling copper pipe has no water leakage;
8. The lead screw and transmission part of the electro-hydraulic servo universal testing machine should be regularly coated with lubricating oil to prevent dry friction;
9. Electro-hydraulic servo universal testing machine fasteners should be locked regularly: the vibration after the sample is broken will often make some fasteners loose, and must be regularly inspected (normal use for about 30 working days). To avoid large losses due to loose fasteners;
10. Other inspections: Improve vigilance and pay close attention to details, so that you can find the signs of accidents early and prevent large accidents. This is especially true when the device is initially put into operation. Always pay attention to external leaks, contaminants, component damage, and abnormal noise from pumps, couplings, etc.
The above is the daily maintenance and precautions of the electro-hydraulic servo universal testing machine.
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