The 1250 ton frame hydraulic press is used for stretching, stamping, bending forming and other processes. It is mainly used in industries such as automobiles, tractors, locomotives, ships, electromechanical meters, etc. It is also suitable for the stretching of various high-strength aluminum alloys. The hydraulic system will be polluted after the machine is used for a long time. In order to prolong the service life and ensure the safe operation, the hydraulic system can be cleaned regularly. As a user, how to clean.1250 ton frame hydraulic pressHydraulic system?
Cleaning is to eliminate pollution, and it is also an effective way to keep hydraulic oil, hydraulic components and oil pipelines clean. Hydraulic components areGantry hydraulic pressThe precision parts should be cleaned with hydraulic oil, not kerosene, gasoline or alcohol, etc., to avoid corrosion to hydraulic components, pipelines, seals, etc.
To clean the pipeline of the 1250-ton frame hydraulic press, the oil pipe can be gently knocked with a non-metallic hammer, etc., so as to knock down the dirt in the pipe and effectively remove the sundries on the inner wall, but cannot be knocked hard. In the process of cleaning the hydraulic system, the hydraulic pump unit rotation and heating the cleaning medium shall be carried out at the same time. The temperature of the cleaning oil shall be controlled at 50-80 ℃, then, home improvement filter or filter screen, can effectively filter out impurities, to achieve the cleaning effect.
Clean the hydraulic pump of the 1250-ton frame hydraulic press and improve the intermittent operation of the hydraulic pump. Otherwise, it cannot be cleaned by geodesy. The hydraulic oil in the circuit must be drained and then the oil pipe must be cleaned. Everyone knows the principle of oxidation. Apples will turn yellow after being cut for a while. Although the frame hydraulic press is a big guy, it will cause rust if it is not treated after cleaning and reacts with outside air and moisture, therefore, Xiaobian reminds everyone to let the hydraulic pump run continuously after cleaning and reach the normal temperature.
The hydraulic actuator is one of the five basic components of the hydraulic system. The hydraulic actuator (hydraulic actuator) refers to a device that converts hydraulic energy into mechanical energy to realize the reciprocating linear motion or swing of the actuator, and output force or torque. Hydraulic actuators can be divided into hydraulic motors and hydraulic cylinders. Speed adjustment is an important part of the hydraulic system. If the speed of the actuator of the 1250-ton frame hydraulic press is not normal, the hydraulic press cannot work. The main faults of the speed control system of the 1250 ton frame hydraulic press and their causes can be attributed to the following aspects:
The main reason why the actuator (hydraulic cylinder, hydraulic motor) has no small feed
1. The throttle of the throttle valve is blocked, resulting in no small flow or small flow instability;
2. The spring of the fixed-difference pressure reducing valve is too soft, so that the pressure difference between the front and rear of the throttle valve is too low, resulting in unstable small flow through the speed control valve.
3. The pressure reducing valve in the speed regulating valve is stuck, causing the pressure difference before and after the throttle valve to change with the external load. It is often seen that the load is small when the small feed is small, resulting in an increase in the small feed.