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Analysis on oil contamination and surface contamination of rolling pipes
Because the hydraulic system is easily contaminated, hydraulic oil containing solid contaminants is similar to the abrasives used to grind metal processing surfaces, increasing the amount of oil andRolled tubeFriction of the inner wall. Moreover, the hardness of solid pollutant particles is usually much higher than the hardness of the inner wall material of the conduit, which accelerates the wear of the inner wall of the conduit and even scratches the inner wall. Especially when the flow rate of the liquid is high and unstable (fast flow rate and large pressure pulsation), the material on the inner wall of the guide will be impacted and peeled off.
When the hydraulic oil contains water, it will cause the hydraulic oil to form an emulsion, reducing the lubrication and anti-corrosion effects of the hydraulic oil, and accelerating the wear and corrosion of the inner wall. When the hydraulic oil contains a large number of bubbles, the bubbles are compressed in the rolling tube, and the surrounding oil flows to the space originally occupied by the bubbles, causing a strong hydraulic impact. Under the impact of the high-pressure liquid mixture, the inner wall is corroded and peeled off. The above situations will eventually lead to pipeline rupture and oil leakage.