top
Prevent dirt from accumulating on the surface of the stainless steel pipe
Prevent dirt from accumulating on the surface of the stainless steel pipe

Due to the existence of gaps in the structure of the equipment and components or the presence of metal or non-metallic deposits on the surface of the stainless steel pipe, a gap is formed between the deposit and the surface of the stainless steel pipe. Under the action of corrosive media, dots and pets will be preferentially formed in the gap. Damage, this is crevice corrosion. In an aqueous medium containing Cl-, the partial destruction of the passivation film caused by the acidification of the medium solution in the gap and lack of oxygen.

The most fundamental thing to eliminate gaps is to avoid gaps in the structural design. The gaps between the heat exchange equipment tubes and the tube sheets should be cleaned regularly and in an environment such as sea water to prevent dirt from accumulating on the surface of the stainless steel tube. The selection of high chromium, molybdenum and high molybdenum, nitrogen stainless steel pipes resistant to crevice corrosion is a general idea for the selection of stainless steel pipes that are resistant to pitting corrosion and crevice corrosion. At the same time, it can be seen that in order to solve the crevice corrosion, it is more difficult to start from the selection of materials than to solve the pitting corrosion, and the economic cost will be higher.

Leave a Reply

Your email address will not be published. Required fields are marked *

WINSCO
Chat with Vincent PorterChat with Vincent PorterChat with Vincent PorterChat with Vincent PorterChat with Vincent Porter
already 1 902 messages

  • Mr.Tian 10:12 AM, Today
    Hello, My dear friend , Thanks for your attention to winscometal , We are very glad to answer your issus about our company or our Products .