The reason for the slow return speed of the hydraulic press cylinder has been found!
Release time:
2021-11-24
The reason for the slow return speed of the hydraulic press cylinder has been found!
The hydraulic press reversing valve return spring not only has insufficient elasticity but is also skewed, causing the valve core to fail to return to its original position after power failure. This results in a small valve opening, throttling the hydraulic fluid. The initial movement of the cylinder is slow. At lower temperatures, the viscosity of the hydraulic fluid is higher, and its activity is poor, leading to slow hydraulic cylinder movement. If the ambient temperature is indeed too low, a heater or appropriate insulation measures can be used to increase the oil temperature during startup.
The oil contamination should be checked; check if dirt or resin deposits are blocking the valve core or valve ports, and check the valve body for wear. The throttling resistance in the control pipeline may be too high, the flow valve adjustment is improper, the control pressure is inconsistent, and the pressure source is disturbed.
The control pressure of the hydraulic press hydraulic system is too low.
The hydraulic press piston rod and cylinder are stuck, or the hydraulic cylinder is blocked. The solution is to replace the hydraulic oil with better viscosity and temperature resistance.
If the ambient temperature is indeed too low, a heater or appropriate insulation measures can be used to increase the oil temperature during startup. Specifically, when the flow valve or directional valve core is stuck or the valve port is blocked, the hydraulic cylinder is easily prone to malfunctions or failures. At this time, check whether the piston and piston rod seals are too tight, whether dirt and resin deposits have entered; whether the axis of the piston rod and cylinder is aligned, and whether the wearing parts and seals have failed. In this case, no matter how it is operated, the hydraulic cylinder will not move or only move slightly.
At lower temperatures, the viscosity of the hydraulic oil is higher, and its activity is poor, leading to slow hydraulic cylinder movement. At this time, the control pressure source should be checked to ensure that the pressure is adjusted to the system's specified value.
Foshan Hongde Machinery Manufacturing Co., Ltd.'s main products include precision punching machines, hydraulic presses, presses, Guangdong hydraulic presses, servo hydraulic presses, four-column hydraulic presses, hot forging machines, Dongguan hydraulic presses, hydraulic presses, Foshan hydraulic presses, and punching machines. Products are widely used in smart wearable devices such as mobile phones, tablet computers, and notebook computers, as well as automotive parts, household appliances and kitchenware, jewelry and crafts, etc.
Because of our focus, we are professional. Our founder has been specializing in hydraulic presses since the 1980s. Our company inherits more than 30 years of hydraulic press manufacturing experience, technology, engineering and technical personnel, and skilled workers from state-owned enterprises; at the same time, we continuously improve, enhance, and perfect our products in line with industry development needs. Welcome customers to inquire!
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