The hydraulic oil of the cutting machine is the foundation of its work. The quality of the hydraulic oil affects not only the normal work of the hydraulic cylinder, but also the serious damage of the components of the hydraulic system, causing unnecessary trouble for the workers.
So, how to judge the quality of the hydraulic oil of the cutting machine?
First, visual method: that is to say that if the hydraulic oil cylinder is used in the process, the oil is milky white cloudy, then it shows that the oil contains a lot of water.
Two, the combustion method: clean, dry cotton or cotton dipped in a little oil to be detected, and then the light with fire. If it is found that the "crackling" sound or flash explosion phenomenon, the oil contains more water.
Secondly, it is the identification of the content of the impurities in the hydraulic oil in the hydraulic cylinder of the cutting machine.
Three, sense identification: metal particles were used in oil hydraulic cylinder, with the fingers to pinch directly feel the fine particles; in the light, if there is a reflective flash point, then the hydraulic components are badly worn; if there are a large number of sedimentation tank at the bottom of the metal scraps the main oil pump or motor has serious wear.
Four, temperature identification: the hydraulic oil with low viscosity can be heated up in a clean and dry test tube directly. If the oil liquid in the tube is found to be precipitated or suspended, it is indicated that there is a mechanical impurity in the liquid.
Five, filter paper identification: for high viscosity of the hydraulic oil, can be diluted with pure gasoline, and then filter with clean filter paper. If a large amount of mechanical impurity (metal powder) is found on the filter paper, it indicates that the hydraulic components have been seriously worn out.
Six, voice identification: if the hydraulic cylinder in the operation process of the whole hydraulic system noise and vibration are large, intermittent, at the same time, the main oil pump issued a buzzing sound, and even the emergence of the phenomenon of piston rod "crawling", then observe the liquid fuel tank, oil pipe outlet or transparent liquid level meter, will find a lot of bubbles. This situation indicates that the hydraulic oil has been immersed in a large amount of air. In order to make the hydraulic cutting machine stable, it is necessary to replace the hydraulic oil and keep it in the best condition.