The seal between the inner surface of the rebound hydraulic cylinder and the piston is the main factor that causes the leakage in the rebound hydraulic cylinder. If longitudinal pull marks are generated in the cylinder, even if the new piston seal is replaced, the failure cannot be effectively eliminated. The inner surface of the cylinder Mainly check whether the dimensional tolerance and geometric tolerance meet the technical requirements, whether there is longitudinal pull marks, and measure the depth of the longitudinal pull marks in order to take corresponding solutions. When there is slight deformation and shallow draw marks on the cylinder, a strong honing process is used to repair the cylinder. The powerful honing process can repair the cylinder within 2.5 times of the original tolerance. It honing the parts with excessive size or shape error through a powerful honing machine, so that the overall size, shape tolerance and roughness of the cylinder can meet the technical requirements.
The inner surface of the cylinder tube is seriously worn. When there are deep longitudinal pull marks, the mapping is carried out according to the actual object, and it is re-produced and replaced by a professional manufacturer according to the cylinder tube manufacturing process. The cylinder can also be repaired with TS311 antifriction repair agent. TS311 anti-friction repair agent is mainly used to repair worn and slipped metal parts. During the repair process, use an alloy spatula to shave the groove with a depth of more than 1mm on the surface of the scratch, then clean the groove surface with acetone, and apply the adjusted TS311 antifriction repair agent to the polished surface with the cylinder inner diameter profile plate On the surface, scrape hard to ensure compaction and be higher than the inner surface of the cylinder. After curing, polish to leave a finishing allowance. Finally, the overall size, shape tolerance and roughness of the cylinder can be achieved by grinding. But the life and reliability of this repair cylinder are not high.