Add: Mechanical&Electrical Industry Zone,Yuhuan,Zhejiang,China
Hydraulic Valve The main components of the hydraulic valve body material, Hydraulic Valve first of all should take into account the physical properties of the working medium (temperature, pressure) and chemical properties (corrosive) and so on. At the same time, you should also understand the degree of cleanliness of the media (with or without solid particles). In addition, we must also refer to the relevant provisions and requirements of the State and the use of the department.
Many kinds of materials to meet the hydraulic valve body in a variety of different conditions of use requirements. However, the correct and reasonable choice of hydraulic valve body material, Hydraulic Valve you can get the most economical hydraulic valve life and the best performance.
Gray cast iron gray cast iron valve for its low price, wide application and application in various fields of industry. They are usually used in the case of water, steam, Hydraulic Valve oil and gas as a medium and are widely used in chemical, printing and dyeing, oiling, textile and many other industrial products with little or no effect on iron pollution.
Applicable to the working temperature between -15 ~ 200 ℃, the nominal pressure PN ≤ 1.6MPa low pressure hydraulic valve body.
Black heart malleable cast iron for working temperature between -15 ~ 300 ℃, nominal pressure PN ≤ 2.5MPa in the low pressure hydraulic valve body. Applicable medium for water, sea water, gas, ammonia and so on
Ductile iron Ductile iron is a kind of cast iron, Hydraulic Valve this cast iron, lumps or spherical graphite to replace the gray cast iron in the flake graphite. This change in the internal structure of the metal makes it more mechanical than ordinary gray cast iron, and does not damage other properties. Therefore, Hydraulic Valve the use of ductile iron manufacturing of hydraulic valve body than those made with gray cast iron hydraulic valve body pressure is higher. Applicable to the working temperature between -30 ~ 350 ℃, the nominal pressure PN ≤ 4.0MPa in the low-pressure hydraulic valve body.
Carbon steel (WCA, WCB, WCC) was originally developed for the production of cast steel to meet the production needs beyond the capacity of cast iron valves and bronze valves. However, Hydraulic Valve due to the good performance of carbon steel valve, and by the thermal expansion, impact load and pipeline deformation stress generated by the strong resistance, so that its use to expand, usually including the cast iron valve and bronze hydraulic valve body Working conditions.
Applicable to the working temperature between -29 ~ 425 ℃ in the high pressure hydraulic valve body. Which 16Mn, 30Mn for the temperature between -40 ~ 400 ℃, commonly used to replace ASTM A105. Applicable medium for saturated steam and superheated steam. High temperature and low temperature oil,Hydraulic Valve liquefied gas, compressed air, water, natural gas and so on.
Low temperature carbon steel (LCB) low temperature carbon steel and low nickel alloy steel can be used for temperatures below zero, but can not be extended to use in cryogenic areas. Hydraulic valves made of these materials are suitable for use in the following media, such as seawater, carbon dioxide, Hydraulic Valve acetylene, propylene and ethylene.
Low-alloy steel (WC6, WC9) low-alloy steel (such as carbon and molybdenum steel) made of hydraulic valve body can be applied to a variety of working medium, including saturated and superheated steam, cold and hot oil, natural gas and air The Carbon steel valve operating temperature can be used to 500 ℃, Hydraulic Valve low alloy steel valve can be used above 600 ℃. At high temperatures, the mechanical properties of low alloy steels are higher than those of carbon steels.
Suitable for working temperature between -29 ~ 595 ℃ between the non-corrosive medium high temperature and high pressure hydraulic valve body; C5, C12 for working temperature between -29 ~ 650 ℃ corrosive medium between the high temperature and high pressure hydraulic valve body.