1. Poor heat dissipation. 1000 tonsfour-column hydraulic pressWhen the design is selected, the design of the oil tank is too small, resulting in the oil circulation too fast or the cooler is used due to the high ambient temperature but the cooler effect is poor, which is the reason for poor heat dissipation.
2, the oil into the air or moisture. When the hydraulic pump of the hydraulic machine converts the oil into pressure oil, the presence of air and water will increase the heat and cause overheating. Misuse hydraulic oil that is too viscous or hydraulic oil becomes larger. The oxidation of hydraulic oil or low ambient temperature will make the viscosity larger, and the hydraulic oil with too much viscosity will increase the friction and cause heat.
3, four column hydraulic machine leakage is serious. Most people think that it has nothing to do with temperature rise. As we all know, leakage will cause energy loss. What is the energy loss converted into? In fact, they are all converted into heat energy, thus increasing the oil temperature.
4. The unloading circuit of the 1000-ton four-column hydraulic press system is not operating well. Usually, an unloading valve is set at the pump outlet of the system. When the system is not loaded and does not need pressure oil, the system is unloaded to reduce energy loss. If the unloading valve action is not good, do not need pressure oil from the overflow valve oil spill back to the tank, will make the oil temperature rise. Impact during commutation and speed commutation.