ZHEJIANG YITIAN PRECISION MACHINERY CO.,LTD
Maintenance of precision four-guide column punch products
(1) Select the appropriate hydraulic oil
The precision four-guide column punch products hydraulic oil plays the role of transmitting pressure, lubricating, cooling and so on in the whole system. Improper selection of hydraulic oil will make the hydraulic system fail and degrade in performance. In general, refer to the instruction manual of the four-column hydraulic press, and select the hydraulic oil of the specified type. In special cases, the substitute oil with the same nature as the specified type can be selected. Hydraulic oils of different brands cannot be mixed to avoid chemical reactions, and deteriorating oils with dark brown, milky white and peculiar smells cannot be used.
(2) Regular maintenance
Regularly remove the dirt on the filter of precision four-guide column punch products, if the filter is damaged, replace it 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 under high temperature conditions for a long time. When the four-column hydraulic press works for 10,000 hours, professional personnel should be invited to inspect the equipment, and adjust and repair it to prevent fatal damage to the hydraulic system and equipment of precision four-guide column punch products due to long-term disrepair.
(3) Prevent solid impurities from entering the system
When adding or replacing hydraulic oil, filter the oil to prevent solid impurities from invading the system and block the oil circuit, especially the precision parts, which are easy to block. When cleaning the mailbox, the dismantled parts should be packaged to avoid sundry contamination. The cleaning oil of the four-column hydraulic oil tank should use the same brand of hydraulic oil, and repeat cleaning about three times.
(4) Prevent air from entering the system
Precision four-guide column punch products are high-pressure equipment, and a large amount of air intrusion will aggravate the "cavitation" phenomenon. In addition, it will increase the working noise of the system, the transmission is unstable, the efficiency is reduced, the oil is easily oxidized and deteriorated, and sometimes the hydraulic system of the four-column hydraulic press will produce a "crawling" phenomenon.
(5) Prevent the working temperature of hydraulic oil from being too high
The working temperature of hydraulic oil should generally be controlled between 30°C and 80°C. If the oil temperature is too high, the viscosity of the hydraulic oil will decrease, which will easily cause leakage, reduce the efficiency, and reduce the strength of the lubricating oil film. Accelerate the wear of the four-column hydraulic press, generate carbides and silt, accelerate the oxidation of the oil, and deteriorate the oil quality; when the temperature is too low, the viscosity is large, the fluidity is poor, the resistance is large, and the working efficiency of the four-column hydraulic press is low.