Maintenance matters and maintenance instructions of electro-hydraulic servo universal testing machine

The main machine of the electro-hydraulic servo universal test machine adopts a cylinder under-mounted host, adopts microcomputer control and display functions, and is mainly used for tensile, compression, bending and shear tests of metal and non-metals. Suitable for metallurgy, construction, light industry, aviation, aerospace, materials, colleges and universities, scientific research institutions and other fields. During use, any product needs to be maintained by users to ensure the normal operation of the equipment. Let us share with you the maintenance matters and maintenance keys of the electro-hydraulic servo universal testing machine, hoping to help you.

1. Maintenance of electro-hydraulic servo universal testing machine

1. Cleaning and cleaning: During the test, some dust will inevitably be produced, such as oxide scales, metal debris, etc. If it is not cleaned in time, it will not only cause wear and scratches on the surface of certain parts, but more serious if these dusts enter the hydraulic system of the electro-hydraulic servo universal test machine, it will cause very serious consequences such as blocking the valve hole and scratching the piston surface. Therefore, cleaning after each use is very critical, and the test machine must be kept clean;

2. The electro-hydraulic servo universal testing machine needs to complete the corresponding test with a suitable fixture, otherwise the test will not be successful, but it will also damage the fixture: the electro-hydraulic servo universal testing machine is generally only equipped with fixtures for making standard samples. If you want to make non-standard samples, such as steel strands, overlapping steel fines, etc., you must add appropriate fixtures; there are also some super hard materials, such as spring steel, etc., and you must use special material clips, otherwise the fixtures will be damaged;

3. Hydraulic oil: The fluid level of the oil tank must be checked frequently and replenished in time; generally, oil must be changed every 2000 to 4000 hours of use; however, the most important thing is that the oil temperature must not exceed 70℃, and the cooling system must be turned on when the oil temperature exceeds 60℃;

4. Filter: For filters without clogging indicators, they are generally replaced every 6 months. For filters with clogging indicators, continuous monitoring should be carried out and must be replaced immediately after the indicator alarms;

5. Electro-hydraulic servo universal testing machine energy accumulator: Some electro-hydraulic servo universal testing machines are equipped with energy accumulators, and it is necessary to ensure that the pressure of the accumulator is in a normal working state. If the pressure is found to be insufficient, the pressure needs to be replenished immediately; only nitrogen is allowed to be charged to the accumulator;

6. Regular inspection of components: All pressure control valves, flow control valves, pump regulators, and signal devices such as pressure relays, stroke switches, thermal relays must be regularly inspected;

7. Cooler: The scale accumulation of air-cooled coolers should be cleaned regularly; if water-cooled coolers are used, they should be regularly observed for the cooling copper pipe to be cracked and leaked;

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. The fasteners of the electro-hydraulic servo universal testing machine must be locked regularly: the vibration after the sample is broken often causes some fasteners to loosen, and it must be inspected regularly (about 30 working days for normal use) to avoid large losses caused by loose fasteners;

10. Other inspections: Be vigilant and pay close attention to details, so that signs of accidents can be detected early and prevent major accidents. This is especially true when the device is initially put into operation. Always pay attention to external leakage, contaminants, component damage, and abnormal noise from pumps, couplings, etc.

2. Maintenance of electro-hydraulic servo universal testing machine

1. The hydraulic oil of the electro-hydraulic servo universal test machine must be checked frequently and replenished in time; generally, oil must be changed every 2000 to 4000 hours of use, but the most important thing is that the oil temperature must not exceed 70℃, and the cooling system must be turned on when the oil temperature exceeds 60℃. Filter: For filters without clogging indicators, they are generally replaced every 6 months. For filters with clogging indicators, continuous monitoring should be carried out and must be replaced immediately after the indicator alarms.

2. Cleaning and cleaning of electro-hydraulic servo universal testing machine will inevitably produce some dust during the test process, such as oxide scales, metal debris, etc. If it is not cleaned in time, it will not only cause wear and scratches on the surface of certain parts, but more serious consequences if these dust enters the hydraulic system of the hydraulic system of the hydraulic universal testing machine, it will cause very serious consequences such as blocking the valve hole and scratching the piston surface. Therefore, cleaning after each use is very critical, and the test machine must be kept clean. Use a suitable fixture to complete the corresponding test, otherwise the test will not be very successful, but it will also damage the fixture. The electro-hydraulic servo universal test machine is generally only equipped with fixtures for making standard samples. If you want to make non-standard samples, such as steel strands, overlapping steel fines, etc., you must add appropriate fixtures, as well as some super hardness materials, such as spring steel, etc., you must use special material clips, otherwise the fixtures will be damaged.

3. Electro-hydraulic servo universal testing machine energy accumulator. Some hydraulic universal testing machines are equipped with energy accumulators. It is necessary to ensure that the pressure of the accumulator is in a normal working state. If the pressure is found to be insufficient, the pressure needs to be replenished immediately. Regular inspection of components: All pressure control valves, flow control valves, pump regulators, and signal devices such as pressure relays, stroke switches, thermal relays must be regularly inspected. Cooler: The scale accumulation of air-cooled coolers should be cleaned regularly; if water-cooled coolers are used, they should be regularly observed for the cooling copper pipe to be cracked and leaked. 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.

4. The fasteners of the electro-hydraulic servo universal testing machine must be locked regularly: the vibration after the sample is broken often causes some fasteners to loosen. It is necessary to conduct regular inspections (about 30 working days for normal use) to avoid major losses caused by loose fasteners. Other inspections: Be vigilant and pay close attention to details, so that signs of accidents can be detected early and prevent major accidents. This is especially true when the device is initially put into operation. Always pay attention to external leakage, contaminants, component damage, and abnormal noise from pumps, couplings, etc.

Under normal circumstances, there are very few sudden damage to the equipment, and most failures are caused by the gradual development of slight wear of the parts; if the signs of failure can be found and removed in the early stages of wear or deterioration of the parts, the development of deterioration and the occurrence of failure can be prevented. Equipment maintenance inspection is an extremely effective means to detect hidden dangers in advance when detecting signs in the early stage. The above are the maintenance and maintenance matters of the electro-hydraulic servo universal testing machine shared by the editor. I hope it can help you!