Bolt corrosion
Thread Content
Dear experts, I have a question: bolts made of organic gases are highly susceptible to corrosion due to their acidity. Is there any better material suitable for such applications?
Stainless steel, 304 316
Select A4-50/A2-50, A4-70/A2-70, or A193 B8 CL2, A193 B8M CL2, or A320-L7 according to the strength requirements; for details, refer to HG/T20613-2009 or HG/T20634-2009
It seems this bolt isn’t necessary at all; it’s basically useless. It’s time to stop producing it immediately! An accident can happen at any moment! ! ! The device management is in such a poor state, sigh,,,,
How is the stress level? If it’s low, could nylon screws be considered? If the pressure is high, the only option is to enhance the corrosion resistance of the screws; using stainless steel merely helps to extend their lifespan a bit
Hello, regarding equipment corrosion in the chemical industry, feel free to leave your contact information so we can exchange ideas and learn from each other.
The seal isn’t tight; the cause of corrosion needs to be determined. Judging from the appearance, it is not atmospheric corrosion; it is likely related to the medium between the roots
That’s way too exaggerated; the bolts will run out in no time! The selection of the material for bolt properties is determined by taking into account factors such as the medium involved and the pressure levels
The equipment needs to be updated; the flange seals no longer work, and it’s likely that the cylinder and other components are also severely corroded. It’s not a problem with the bolts
The acidic substances are to blame; it’s likely that the materials used for the pipes and fittings were chosen incorrectly. The gasket material for the flanges is definitely not suitable either, otherwise the sealing performance wouldn’t be so poor. Metals are prone to corrosion, while non-metals have a short lifespan. Reconsidering the design and using plastic-lined materials might yield better results