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Manufacture Of Hydraulic Valve Casting

Yutung Industrial Limited | Updated: Aug 23, 2017

     The use of metal-type pouring: casting to increase the cooling speed; low alloying: Adding alloying elements in molten iron, low alloying, adding CU content control in 0.5-0.8%, tin content control in 0.04~0.06%; intensified inoculation: molten iron is carried out in the process of 0.2~0.3% rare-earth silicon alloy inoculation, while pouring is carried out simultaneously with flow inoculation.Hydraulic Valve Casting
    Hydraulic valve is a kind of pressure oil operation automation element, it is controlled by the pressure valve, usually with the solenoid valve combination, can be used for long-distance control of hydropower station oil, gas, water pipe system of the break. Often used for clamping, control, lubrication and other oil circuits. There are direct type and pilot type of the division, more use of pilot. A component used in hydraulic fluid to control the flow and direction of a liquid pressure ﹑. The control pressure is called the pressure control valve, the control flow is called the flow control valve, the control ﹑ breaks and the flow direction is called the directional control valve.Hydraulic Valve Casting
    Category: According to the control Method classification: manual, electrical control, liquid control. Classification by Function: Flow valve (throttle valve, speed control valve, shunt set-flow valve), pressure valve (overflow valve, decompression valve, sequential valve, unloading valve), directional valve (solenoid directional valve, manual reversing Valve, valve, hydraulic control valve). According to the installation method: Plate valve, tubular valve, stacking valve, threaded cartridge valve, cover valve. According to the mode of operation: manual valve, motor valve, electric valve, hydraulic valve, electro-hydraulic valve and so on.Hydraulic Valve Casting
    Direction control: According to the use of valves and reversing valve. Check valve: Only allow the fluid in the pipeline one-way connection, reverse is cut. Reversing valve: Changing the connection between different pipelines. According to the valve core in the valve body working position number two, three, etc., according to the control of the channel number of two, three links, four-pass, five-pass, and so on; According to the valve core drive mode break up, mobile, electric, hydraulic and so on. Fig. 2 is the working principle of the three-bit four-pass directional valve. P is the oil supply port, O is the return port, a, B is the export to the execution component. When the spool is in the middle, all the oil ports are cut off and the actuator is not moved; when the spool moves to the right, p and A Pass, B and O Pass, and when the spool moves to the left, p and B pass, A and O. In this way, the executive components can be positive and reverse motion.Hydraulic Valve Casting
   When the system fails and the pressure rises to a limit that may cause damage, the valve opens and overflows to ensure the safety of the system. ⑵ Pressure Reducing valve: It can control the branch circuit to get the stability of the oil lower than the main circuit. The pressure relief valve according to its control function is different, can be divided into the fixed value pressure reducing valve (output pressure is constant value) ﹑ fixed difference pressure reducing valve (input and output press difference is fixed value) and the fixed ratio relief valve (input and output pressure to maintain a certain proportion).Hydraulic Valve Casting