Development and Application of Performance Technology of EHV Electromagnetic Direction Valve

Formed in the country cylinder, pumps, valves, components, seals and other production and supporting system, due to historical reasons and academic heritage, costs and other factors lead to China's hydraulic practitioners in their daily work, the first test machine, try Before the machine to ensure that the voltage of the line where the ultra-high voltage electric pump is stable, the power of the ground and insulation is good, check the oil temperature and noise during operation, these details do a good job, will greatly extend the service life of hydraulic equipment. Basically formed from the beginning of the design, it will be 32Mpa pressure ceiling of the design concept, and this concept led to the majority of hydraulic engineers rarely use ultra-high pressure hydraulic technology.

But in some occasions, the pressure used in such aspects as metal extrusion, hydroforming, powder metallurgy, synthetic diamond synthesis, ultrahigh-pressure jet processing and pressure resistance test is usually about 100MPa, and some even above 600MPa. Before, these technologies from Japan, the United States, Germany and other masters. China began to introduce these technologies in the late 1960s to 63Mpa manual hydraulic pump as the representative, the 1980s is the introduction of digestion and absorption of the German radial piston pump, the pressure up to 100Mpa, through years of digestion and absorption and improvement, China's 100Mpa EHV hydraulic technology has reached the standard from the performance, life expectancy, reliability and so on.

Widely used in aerospace, research institutes, railways, steel, electricity, pressure test and other industries. Routine maintenance work is very important, essential, such as the timely replacement of hydraulic oil, dust seal work, check the equipment is leaking oil, etc., when the replacement for maintenance, but also pay attention to the coordination between the equipment to see if there is Wear and tear The company introduced the technology in Germany, based on the RK series of radial piston pump has been optimized and improved many times, with high pressure, compact structure, small size, light weight, self-priming function, low noise and so on. Passed 30 + million impact tests, reliability, life expectancy exceeded the original technology.

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