Electro-hydraulic servo universal testing machine has been widely used in mechanics testing of building materials and metal materials because of its good control performance and test precision. In large steel companies and quality inspection units, electro-hydraulic servo universal testing machines are often used for high-load operation. Most of the testers lack maintenance experience, so these problems often occur. Manufacturers and users are troubled. Some users even complain that the equipment is too delicate and not as good as the old hydraulic press. As everyone knows, electro-hydraulic servo universal testing machine is a combination of optical, mechanical and electrical high-precision instruments, not production equipment, how can it be called "old cattle"? In fact, although the electro-hydraulic servo universal testing machine is precise but not delicate, as long as you master the following ten snacks, you can use it with ease.
1. Cleaning and cleaning: In the course of the test, some dust, such as oxide scale, metal scraps, etc., will inevitably be generated. If they are not cleaned in time, they will not only cause wear and scratches on the surfaces of certain parts, but also Seriously, if these dusts enter the hydraulic system of the electro-hydraulic servo universal testing machine, they will have very serious consequences such as plugging the valve hole and scratching the surface of the piston. Therefore, cleaning after each use is critical, and the test machine must be kept 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-joined steel fines, etc., must be fitted with suitable fixtures; there are also some materials with super-hardness, such as spring steel, etc., special clips must be used, otherwise the fixture will be damaged;
3, hydraulic oil: must always check the tank level and timely replenishment; generally every use of 2000 to 4000 hours for a change of oil; However, the most important is that the oil temperature must not exceed 70 °C, in the oil temperature must exceed 60 °C must open the cooling system;
4. Filters: For filters without a clogging indicator, they are usually replaced every 6 months. For filters with clogging indicators, they must be constantly monitored and must be replaced immediately after the indicator alarms;
5. Accumulators: Some electro-hydraulic servo universal testing machines are equipped with accumulators. The accumulator pressure must be guaranteed to be in normal working condition. If the pressure is found to be insufficient, it is necessary to replenish the pressure immediately; it is only necessary to charge the accumulator with nitrogen gas. ;
6. Periodic inspection of components: All pressure control valves, flow control valves, pump regulators, and signal devices such as pressure relays, limit switches, and thermal relays must be checked regularly;
7. Cooler: The fouling of the air-cooled cooler should be regularly cleaned; the use of water-cooled should be regularly observed whether the cooling copper pipe leaks;
8, the electro-hydraulic servo universal testing machine screw and transmission parts should be regularly coated with lubricants to prevent dry friction;
9, electro-hydraulic servo universal testing machine fasteners should be regularly locked: the vibration after the sample pulled off will often loose some fasteners, we must regularly carry out inspections (normal use of thirty days or so), To avoid large losses caused by loose fasteners.
10. Other inspections: Raise vigilance and pay close attention to details to identify signs of an accident as early as possible to prevent accidents. This is especially true when the equipment is initially put into operation. Always pay attention to external leaks, contaminants, component damage, and abnormal noise from pumps, couplings, etc.
1. Cleaning and cleaning: In the course of the test, some dust, such as oxide scale, metal scraps, etc., will inevitably be generated. If they are not cleaned in time, they will not only cause wear and scratches on the surfaces of certain parts, but also Seriously, if these dusts enter the hydraulic system of the electro-hydraulic servo universal testing machine, they will have very serious consequences such as plugging the valve hole and scratching the surface of the piston. Therefore, cleaning after each use is critical, and the test machine must be kept 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-joined steel fines, etc., must be fitted with suitable fixtures; there are also some materials with super-hardness, such as spring steel, etc., special clips must be used, otherwise the fixture will be damaged;
3, hydraulic oil: must always check the tank level and timely replenishment; generally every use of 2000 to 4000 hours for a change of oil; However, the most important is that the oil temperature must not exceed 70 °C, in the oil temperature must exceed 60 °C must open the cooling system;
4. Filters: For filters without a clogging indicator, they are usually replaced every 6 months. For filters with clogging indicators, they must be constantly monitored and must be replaced immediately after the indicator alarms;
5. Accumulators: Some electro-hydraulic servo universal testing machines are equipped with accumulators. The accumulator pressure must be guaranteed to be in normal working condition. If the pressure is found to be insufficient, it is necessary to replenish the pressure immediately; it is only necessary to charge the accumulator with nitrogen gas. ;
6. Periodic inspection of components: All pressure control valves, flow control valves, pump regulators, and signal devices such as pressure relays, limit switches, and thermal relays must be checked regularly;
7. Cooler: The fouling of the air-cooled cooler should be regularly cleaned; the use of water-cooled should be regularly observed whether the cooling copper pipe leaks;
8, the electro-hydraulic servo universal testing machine screw and transmission parts should be regularly coated with lubricants to prevent dry friction;
9, electro-hydraulic servo universal testing machine fasteners should be regularly locked: the vibration after the sample pulled off will often loose some fasteners, we must regularly carry out inspections (normal use of thirty days or so), To avoid large losses caused by loose fasteners.
10. Other inspections: Raise vigilance and pay close attention to details to identify signs of an accident as early as possible to prevent accidents. This is especially true when the equipment is initially put into operation. Always pay attention to external leaks, contaminants, component damage, and abnormal noise from pumps, couplings, etc.
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