The hydraulic oil of the cutting machine is the foundation of its work. The quality of the hydraulic oil not only affects the normal operation of the hydraulic cylinder, but also causes serious damage to the components of the hydraulic system, causing unnecessary trouble to the use of the worker.
So, how to judge the quality of the hydraulic oil of the cutting machine?
First, the visual method: that is, if the oil is milky white and turbid during the use of the hydraulic cylinder, it means that the oil contains a lot of water.
2. Combustion method: Use a clean, dry cotton yarn or cotton paper to dip a little of the oil to be tested, and then ignite it with fire. If the cracking or flashing phenomenon of "噼啪" is found, it means that the oil contains more water. Secondly, it is about the identification of the impurity content of hydraulic oil in the hydraulic cylinder of the cutting machine.
3. Sensory identification: There is obvious metal particle suspension in the oil used in the hydraulic cylinder. When the finger is kneaded, the presence of fine particles is directly felt. Under the illumination, if there is a reflective flash point, the hydraulic component is serious. Wear; if there is a large amount of metal chips deposited on the bottom of the tank, the main oil pump or motor has been seriously worn.
Fourth, heating identification: For lower viscosity hydraulic oil can be directly put into a clean, dry test tube to heat up. If it is found that the oil in the test tube is precipitated or suspended, it means that the oil contains mechanical impurities.
5. Identification of filter paper: For hydraulic oil with higher viscosity, it can be diluted with pure gasoline and then filtered with clean filter paper. If a large amount of mechanical impurities (metal powder) is found on the filter paper, the hydraulic components are severely worn.
Sixth, sound identification: If the hydraulic cylinder has large, intermittent noise and vibration during the operation of the hydraulic cylinder, and the main oil pump emits a "beep" sound, and even the piston rod "crawling" phenomenon, then Observe the tank level, the tubing outlet or the transparent level gauge and a large amount of foam will be found. This situation indicates that the hydraulic oil has been immersed in a large amount of air. In order to stabilize the hydraulic cutting machine, it is necessary to replace the hydraulic oil; keep it in the best condition!