Pneumatic valve pneumatic body rusted?

follow the skills, the industrial production of high temperature and high pressure, low temperature, high vacuum, corrosive, radioactive, flammable and explosive increasing contour parameters of mixed and disorderly conditions, and then on the use of the pneumatic valve safety and function of the firm and the use life etc. Put forward higher and more stringent requirements.
due to the corrosion phenomenon appeared in the metal and the surrounding environment of spontaneous interaction, how will the metal with the surrounding environment or more isolated from the use of non-metallic composite material, is the key point of anti-corrosion. Corrosion of pneumatic valve, pneumatic valve is often understood as metal materials in the chemical or electrochemical environment under the action of the damage.
pneumatic valve body corrosion, comes in two forms, namely, chemical corrosion and electrochemical corrosion. The corrosion rate of it depends on the medium temperature, pressure, chemical properties and corrosion resistance of pneumatic valve body material. Corrosion rate can be divided into six such as:
and complete corrosion resistant: corrosion rate below. Mm/year;
and corrosion resistant, corrosion speed. To. Mm/year;
, corrosion resistant, corrosion speed. To. Mm/year;
and is corrosion resistant, corrosion speed. To. Mm/year;
, poor corrosion resistance: corrosion speed. To mm/year;
, corrosion resistant, corrosion rate is greater than the mm/year.
although pneumatic valve anti-corrosion materials is very rich, but can you choose well, it is not easy thing, because the problem of corrosion is very complex, so, pneumatic valve body corrosion protection methods are there?
secondly lining measures, such as lead lining, lining aluminum, engineering plastics, lining natural rubber and various synthetic rubber, etc. Such as medium conditions permit, it is a way to save.
once again, in the case of pressure, temperature is not high, made from non-metallic pneumatic valve body material, often can effectively control the corrosion.
in addition, the pneumatic valve body surface by atmospheric corrosion, general steel material is to brush paint protection. - Yongjiaxian sanjing pneumatic valve technology