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Polycrystalline silicon is an extremely important and excellent semiconductor material. It is widely used in the photovoltaic industry and the electronics industry. It is the main raw material for semiconductor...

Polycrystalline silicon is a form of simple silicon. Silicon atoms are arranged in a diamond lattice form to form polycrystalline silicon. The crystal nuclei forms grains in the same direction to form...

3.1.2 Cold sealing performance tests The sealing performance test of the valve is generally divided into high-pressure sealing and low-pressure sealing performance tests. The test pressure of the high-pressure...

Abstract: valves usually need to work under high temperature and high pressure in many industrial fields such as petroleum, chemical industry, and nuclear power. Testing the performance of valves by simulating...

Diamond super wear-resistant ball valves are used in harsh working conditions in polysilicon, coal chemical, petrochemical and other industries, such as high temperature, high pressure, high flow rate...

The process flow of alloy spraying of valve sealing surfaces mainly includes four steps: preparation before spray welding of valves, surface pretreatment, spray welding of valves, and post-processing...

Combined with the work practice on board, aiming at the damage to the sealing surface of the boiler feedwater globe check valve, the method of grinding the sealing surface to repair the glove valve is...

Globe valves are a type of valve commonly used in various industries to control the flow of fluids. They have been around for centuries and continue to be an essential component in many systems today....

The material selection, structural features and working principle of the globe valve for high-temperature and high-pressure oxygen are introduced, and the methods of being anti-static, dust-proof and...

The high-temperature and high-pressure hydrogenation valve is an important pipeline component of the hydrogenation system in the petrochemical industry. The pressure level is above ANSI CL900, and the...

Compared with other industries, there is serious environmental pollution in the chemical industry and the petroleum industry, so relevant departments and personnel must pay more attention to them. At...

Valves play an indispensable key role in oil and gas storage and transportation. Valve leakage is one of the common problems to be seen. If measures cannot be taken as soon as possible to deal with the...