The steel valve block is an indispensable key component in the hydraulic system, and its main role is to integrate multiple hydraulic components, such as spool, seat, etc., to achieve accurate control and distribution of hydraulic oil, so as to drive the hydraulic cylinder, hydraulic motor and other executive components to complete a variety of complex actions.

Structure and material

Structure design: Steel valve block usually adopts integral or combined structure. Monolithic steel valve block is formed in one body, with high strength and rigidity, suitable for hydraulic systems under greater pressure and complex working conditions. The combined steel valve block is composed of a plurality of modules, which can be flexibly combined according to different hydraulic circuit requirements for easy maintenance and replacement of parts.

Material selection: High-quality steel valve blocks generally use high-strength, high-hardness, corrosion-resistant alloy steel materials, such as 45 steel, 40Cr, 35CrMo, etc. These materials through the heat treatment process, such as tempering, quenching, tempering, etc., can improve the comprehensive mechanical properties of the steel valve block, ensure its long-term stable operation under harsh conditions such as high pressure, high temperature, high frequency action, and effectively extend the service life.

Process flow

Precision machining: The processing precision of the steel valve block is extremely high, and it usually needs to be processed by high-precision equipment such as CNC lathes, CNC milling machines, and machining centers. Including drilling, milling, boring, tapping, etc., to ensure that the valve hole, oil passage, installation hole and other parts of the dimensional accuracy, shape accuracy and surface roughness meet the design requirements. For example, the roundness and cylindricity errors of the valve holes need to be controlled in the micron level, and the surface roughness of the oil passage needs to reach Ra0.8 or less, so as to ensure the sealing performance and motion accuracy of the hydraulic components.

Surface treatment: [**]fter the processing is completed, the steel valve block will be surface treated, common blackening, galvanized, hard chrome plating and so on. The blackening treatment can improve the corrosion resistance and wear resistance of the steel valve block, and also play a certain role in rust prevention. Galvanized layer has good corrosion resistance and decorative, suitable for general working conditions; Hard chrome plating is mainly used to improve the hardness and wear resistance of the valve block surface, suitable for high pressure, high frequency operation of the hydraulic system, can effectively reduce wear, extend the service life of the valve block.

Performance characteristics

Excellent sealing performance: the valve hole and oil passage inside the steel valve block are designed reasonably, and with precision machining and high-quality sealing components, good sealing effect can be achieved. In the working process of the hydraulic system, it effectively prevents the leakage of hydraulic oil, ensures the pressure stability and accurate flow of the hydraulic system, and improves the overall efficiency and reliability of the system.

Strong bearing capacity: Due to the use of high-strength alloy steel materials and reasonable structural design, the steel valve block has a high bearing capacity and can withstand greater hydraulic pressure and mechanical load. In high-pressure hydraulic systems, such as construction machinery, mining machinery, etc., steel valve blocks can work stably, provide powerful power support for the executive components, and meet the needs of operations under complex working conditions.

Sensitive and reliable action: The oil channel layout inside the steel valve block is reasonable, the oil flow is smooth, and the high-precision spool and seat components can achieve fast and sensitive action response. In the hydraulic system, when the control signal is input, the steel valve block can quickly and accurately switch the oil circuit, drive the actuator to move according to the predetermined trajectory and speed, and improve the automation degree and work efficiency of the system.

[**]pplication field

Construction machinery: such as excavators, loaders, cranes, etc., the steel valve block plays a core role in the hydraulic system of these equipment, controlling the action of the hydraulic cylinder and the hydraulic motor, and realizing the complex operation functions of digging, shoveling, lifting and so on. Its characteristics of high strength and high carrying capacity can meet the needs of frequent and heavy duty operation of construction machinery under harsh working conditions.

Mining machinery: In the mining process, such as the crusher, mill, conveyor and other equipment hydraulic system, steel valve block is used to control the expansion of the hydraulic cylinder and the rotation of the hydraulic motor, to achieve the crushing, grinding and conveying of ore operations. The corrosion resistance and wear resistance of the steel valve block make it able to operate stably in the environment of large dust, high humidity and strong corrosion for a long time.

Industrial automation: In a variety of industrial automation production lines, such as injection molding machines, die casting machines, stamping machines, etc., steel valve blocks are used to control the pressure, flow and direction of the hydraulic system to achieve mold opening and closing, metal forming and workpiece stamping and other process actions. Its high precision and high reliability characteristics can ensure the stability of industrial production process and the consistency of product quality.

Care and maintenance

Regular inspection: During the operation of the hydraulic system, the steel valve block should be regularly inspected to observe whether there are abnormal conditions such as wear, corrosion and deformation in its appearance, check whether the sealing components are aging and damaged, and timely discover and deal with potential problems to avoid failures.

Cleaning and maintenance: Regularly clean the steel valve block, remove the oil, dust and impurities on the surface, and prevent these pollutants from entering the valve block and affecting the normal work of the hydraulic components. [**]t the same time, check whether the oil passage is smooth, if there is blockage, it should be dredged in time to ensure the smooth flow of hydraulic oil.

Replacement components: When the sealing components, spool, seat and other components in the steel valve block are worn, damaged or aging, new components should be replaced in time to restore the performance of the valve block. When replacing components, pay attention to select high-quality components that match the original valve block, and install them in strict accordance with the assembly process to ensure installation quality.