What should be paid attention to when using and maintaining the press?

What should be paid attention to when using and maintaining the press?

Due to its good control performance and testing accuracy, presses have been widely used in mechanical testing of building materials and metal materials. In the laboratories of large steel companies and quality inspection units, presses are often operated under high load. Most of the experimenters are inexperienced in maintenance, so these problems often arise. Manufacturers and users are annoyed. Some users even complained that the equipment was too expensive, not the old hydraulic press. As we all know, a press is a high-precision instrument that combines optics, mechanics and electricity. It is not an efficient device. How can it be called an 'old scalper'? In fact, while the press is precise, it is not delicate. As long as you master the following ten points, you can use it easily, so what should you pay attention to when using and maintaining the press?



1. The lead screw and transmission part of the press should be regularly lubricated with lubricating oil to prevent dry friction.

2. Cooler: The scale of the air-cooled cooler should be cleaned regularly; the water-cooled copper pipe should be regularly observed to see if there is any water leakage.

3. Regular inspection of components: All pressure control valves, flow control valves, pump regulators and signaling devices, such as pressure relays, travel switches, thermal relays, etc., should be regularly inspected.

4. The fasteners of the press should be locked regularly: the vibration after the fracture of the sample tends to loosen some fasteners, so it should be checked regularly to avoid large losses due to loosening of the fasteners.

5. Accumulator: Some presses are equipped with an accumulator, and the pressure of the accumulator needs to be kept in normal working condition. If the pressure is not enough, the accumulator should be supplied immediately; only nitrogen is charged into the accumulator.

6. Filters: For filters without clogging indicators, they are usually replaced every six months. For filters with clogging indicators, continuous monitoring should be performed. When the indicator light alarms, it needs to be replaced immediately.

7. Hydraulic oil: It is necessary to regularly check the oil tank level and fill it in time; the oil should be replaced every 2000 to 4000 hours; however, it is important that the oil temperature should not exceed 70 ℃, and it needs to be opened when the oil temperature exceeds 60 ℃ cooling system.

8. Other inspections: We should be vigilant, pay close attention to details, detect the occurrence of accidents as early as possible, and prevent the occurrence of major accidents. This is especially true at the beginning of an operation. Always be aware of leaks, contamination, damaged components and abnormal noise from pumps, couplings, etc.

9. Use a suitable fixture to complete the corresponding test, otherwise not only will the test not be very successful, but the fixture will also be damaged: Electro-hydraulic testing machines are generally equipped with fixtures for standard samples, if you want to do non-standard samples, such as stranded wires , grinding steel, etc., need to add appropriate fixtures; there are also some superhard fixtures. Materials such as spring steel need to be clamped with special materials, otherwise the clamp will be damaged.

10. Cleaning and cleaning: During the test, some dust, such as oxide scale, metal chips, etc., will inevitably be generated. If not cleaned in time, not only parts of the surface will be worn and scratched, but more seriously, if this dust enters the hydraulic system of the press, a shut-off valve will be generated. The consequences of holes, scratching the surface of the piston, etc. are very serious, so it is very critical to keep the testing machine clean after each use.

Given the important role played by in ensuring proper functioning of automatic power press machine, every individual must take an interest towards improving automatic power press machine.
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