Four column hydraulic press Maintenance:
(1) Choose the right hydraulic oil
The hydraulic oil of four column hydraulic press plays the role of transmitting pressure, lubricating and cooling in the whole system. If the hydraulic oil selection is not appropriate, the hydraulic system will have faults and performance degradation. Generally, refer to the operation manual of the four column hydraulic press, select the specified type of hydraulic oil, and in special cases, use the substitute oil with the same nature as the specified model. Different brands of hydraulic oil should not be mixed to avoid chemical reaction. The deteriorated oil with dark brown, milky white and peculiar smell should not be used.
(2) Regular maintenance
Regularly remove the dirt on the filter screen of the four column hydraulic press. If the filter screen is damaged, it should be replaced in time. After the four column hydraulic press works for a period of time, the cleaning filter and hydraulic oil tank should be cleaned, and the hydraulic oil should be replaced in time. The cleaning and replacement cycle should be shortened when it is in high temperature for a long time. When the four column hydraulic press works for 10000 hours, professional personnel should be asked to inspect the equipment, adjust and repair it, so as to prevent fatal damage to the hydraulic system and equipment of the four column hydraulic press due to long-term disrepair.
(3) Prevent solid impurities from entering the system
When adding or changing the hydraulic oil for four column hydraulic press, the oil should be filtered to prevent the solid impurities from entering the system and blocking the oil circuit, especially the precision parts, which are easy to block. When cleaning the mailbox, the disassembled parts should be wrapped to avoid contamination by foreign matters. The cleaning oil for the oil tank of four column hydraulic press should be hydraulic oil of the same brand, and the cleaning should be repeated for about three times.
(4) Prevent air from entering the system
Four column hydraulic press belongs to high pressure equipment, a large amount of air invasion will aggravate the phenomenon of "cavitation". In addition, it will increase the working noise of the system, the transmission is unstable, the efficiency is reduced, the oil is easy to oxidize and deteriorate, and sometimes the hydraulic system of four column hydraulic press will produce "crawling" phenomenon.
(5) Prevent the operating temperature of hydraulic oil too high
Generally, the working temperature of the hydraulic oil of four column hydraulic press should be controlled between 30 ℃ and 80 ℃. If the oil temperature is too high, the viscosity of the hydraulic oil will be reduced, which is easy to cause leakage, reduce the efficiency, reduce the strength of the lubricating oil film, accelerate the wear of the four column hydraulic press, form carbide and sludge, accelerate the oxidation of the oil, and deteriorate the oil quality; when the temperature is too low, the viscosity is high, the fluidity is poor, and the resistance is large, The working efficiency of four column hydraulic press is low.