Pneumatic valve, pneumatic valve cover and pneumatic valve plate ( Pneumatic disc) The commonly used material

many manufacturing pneumatic valve parts material, including all kinds of different type of ferrous and non-ferrous metals and their alloys, various kinds of nonmetal materials.
manufacturing pneumatic valve parts of materials to choose according to the following factors:
, pressure, temperature, and the properties of working medium.
, force situation of the parts, and play a role in the structure of pneumatic valve.
and has good manufacturability.
and under the condition of meet the above conditions, want to have a lower cost.
pneumatic valve, pneumatic valve cover and valve plate ( Pneumatic disc) Material
pneumatic valve, pneumatic valve cover and disc ( Pneumatic disc) Is one of the main parts, pneumatic valve directly under medium pressure, the material must operator 'pneumatic valve's pressure and temperature rating'. Commonly used materials have the following:
a, gray cast iron, gray cast iron is suitable for the nominal pressure PN or less. MPa, the temperature was minus ℃ ~ ℃ water, steam, air, gas, oil medium, etc. Gray cast iron used brands are: HT, HT, HT, HT.
2, malleable iron, applicable to the nominal pressure PN or less. MPa, the temperature is - ~ ℃ water, steam, air and oil medium, commonly used brand have: KTH - k - k - 。
3, nodular cast iron: suitable for PN or less. MPa, the temperature was minus ~ ℃ water, steam, air, oil medium, etc. Often use brands are: QT - QT - QT - 。 In view of the current domestic technology level, different GeChang, users are not easy to test. According to the experience, it is suggested that the PN or less. MPa, pneumatic valve or adopt steel pneumatic valve for safety.
4, acid of high silicon ductile iron: applicable to the nominal pressure PN or less. MPa, corrosion medium temperature is lower than ℃.
five, the carbon steel: suitable for nominal pressure PN or less. MPa, the temperature was minus ~ ℃ water, steam, air, hydrogen, ammonia, nitrogen and oil products such as medium. Commonly used brand with WC, WCB, mid-december and high-quality steel, Mn, and the low alloy structural steel.
6, copper alloy: suitable for PN or less. MPa of air, water, oxygen, water, oil, such as medium, and temperature - ~ ℃ steam medium, commonly used brand for ZGnSnZn ( Tin bronze) H, Hpb - （ Brass) 、QAZ— 、QA— ( Aluminum bronze.
7, high temperature copper: suitable for nominal pressure PN or less. MPA, temperature ℃ or less of the steam and oil products. Commonly used brand ZGCrMo, CrM. ZGCrMoV ZGGrMoV, CrMoV, WC, WC, etc. Specific use must, in accordance with pneumatic valve pressure and temperature of the norms.
eight, low temperature steel, is suitable for the nominal pressure PN or less. Mpa, temperature or higher - ℃ ethylene, propylene, liquefied natural gas, liquid nitrogen mass medium, such as commonly used brand) Have ZGCrNi, CrNi, CrNiTi, ZGCrNi
9, acid-proof stainless steel, is suitable for the nominal pressure PN or less. Mpa, temperature ℃ or less nitric acid, acetic acid medium, such as commonly used brand ZGCrNiTi, ZGCrNi< Nitric acid resistant & gt; ，ZGCrNiMoTi 、ZGCrNiMoTi< Acid and urea & gt;