Small hydraulic presses are contaminated during manufacture, testing, use and storage. It is very necessary to keep the hydraulic oil, hydraulic components and pipes clean.
The whole system cleaning of small hydraulic press refers to cleaning the entire hydraulic circuit of the hydraulic device. The system should be restored to actual operating condition before cleaning. The cleaning medium can be hydraulic oil; the cleaning effect is based on the absence of impurities on the loop filter.
The following points should be paid attention to when cleaning;
①When cleaning small hydraulic presses, most of them use hydraulic oil or test oil for work. However, kerosene, gasoline, alcohol, steam or other liquids cannot be used to prevent corrosion of hydraulic components, pipes, fuel tanks and seals.
②During the cleaning process, the operation of the hydraulic pump and the heating of the cleaning medium are carried out at the same time. When the temperature of the cleaning oil is 50-80 ℃, the rubber residue in the small hydraulic press can be easily removed.
③During the cleaning process, a non-metallic hammer can be used to tap the oil pipe, which can be continuously tapped, so as to remove the attachments in the pipeline.
④The clearance operation of the hydraulic pump is beneficial to improve the cleaning effect, and the intermittent time is generally 10-30min
⑤A filter or strainer should be installed on the oil return road of the cleaning oil circuit. At the beginning of cleaning, due to the large amount of impurities, an 80-mesh filter can be used; in the later stage of cleaning, a filter of 150-mesh or more can be used.
⑥ The cleaning time is generally determined by factors such as the complexity of the system, the requirements of filtration precision and the degree of pollution.
⑦ In order to prevent corrosion caused by external moisture, the hydraulic pump should continue to run when the cleaning is over until the temperature returns to normal.
⑧ After cleaning the small hydraulic press, the cleaning oil in the circuit should be removed.
