Views: 0 Author: Site Editor Publish Time: 2026-03-17 Origin: Site
The 4WE6 high-pressure electromagnetic reversing valve is the core direction control component in the hydraulic system. Its core function is to realize the switching, on-off control and reversal function of liquid flow through electromagnet control, thereby driving hydraulic actuators (such as hydraulic cylinders and hydraulic motors) to complete precise actions. The following is a detailed description of its specific functions and technical characteristics:
1. Core role
Flow direction switching and on-off control
By energizing or de-energizing the electromagnet, the valve core is driven to move in the valve body and the liquid flow path is changed. For example:
Switch the liquid from the oil inlet port (P port) to the working oil port (A port or B port) to drive the hydraulic cylinder to extend or retract;
Blocks the flow of oil (neutral function) to keep the hydraulic cylinder in a static or locked position.
In a double-acting hydraulic cylinder, the reciprocating motion of the piston (such as telescopic, lifting, rotating, etc.) is achieved by alternately switching the energized state of the electromagnet.
System security protection
When the system pressure exceeds the set value, the electromagnetic reversing valve can automatically open the overflow channel to prevent equipment damage caused by excessive pressure and ensure safe operation of the system.
Automated operation and sequence control
As the 'brain' of the hydraulic system, the electromagnetic reversing valve can cooperate with other hydraulic components (such as pressure valves and flow valves) to realize the sequential action of multiple hydraulic cylinders. For example:
In the automated assembly line, it controls the clamping and loosening of hydraulic clamps, the reversing movement of the spindle box, etc.
2. Technical characteristics
High voltage adaptability
The rated working pressure is as high as 31.5MPa (some models can reach 25MPa), and can be adapted to medium and high-pressure hydraulic systems to meet the needs of heavy-load scenarios such as construction machinery and metallurgical equipment.
Fast response and high reliability
The reversal time only takes tens of milliseconds and supports high-frequency switching (some models have a reversal frequency of more than millions of times), ensuring rapid movement of hydraulic actuators and improving system efficiency.
Wet electromagnet design is adopted to reduce mechanical wear and impact and extend service life; the internal slide valve assembly is equipped with a return spring, which automatically resets after power failure to ensure action reliability.
Compatibility and flexibility
It supports a variety of hydraulic media such as mineral oil, but must strictly meet the media viscosity and cleanliness requirements (such as NAS 1638 standard grade not less than 9).
Provides a variety of neutral functions (such as O-type, H-type, Y-type). By replacing the valve core or selecting a different model, the hydraulic circuit can meet the needs of locking, free movement or slow pressure release.
An optional concealed manual override device can be used to manually operate the spool displacement during power outage or debugging, without the need for additional tools, improving flexibility.
Diversification of electrical parameters
The coil power supply voltage supports DC 12V, 24V, AC 110V, 220V, etc., adapting to the needs of different industrial control systems.
The protection level reaches IP65, which effectively resists dust and water spray, and can operate stably in conventional industrial environments.
3. Typical application scenarios
Industrial automation equipment
Control the mold opening and closing and ejection mechanism actions of the injection molding machine;
Drives the pick, rotate and place actions of the robot.
Engineering machinery
Control the expansion and contraction of the excavator hydraulic cylinder to realize excavation and unloading of the bucket;
Adjust the lifting and luffing angle of the crane boom.
Metallurgical equipment
Control the pressure adjustment and direction switching of the rolling mill hydraulic system to ensure uniform steel plate thickness;
It drives the vibration mechanism of the crystallizer of the continuous casting machine to improve the quality of the cast slab.
Hydraulic test bench
Simulate the pressure and flow changes of the hydraulic system under different working conditions and test the performance parameters of hydraulic components.
