How Can Flanges Be Prevented From Corrosion

  • Crevice corrosion and pitting corrosion are two types of corrosion that can occur on flanges over the course of their lifetime.

    Pitting Corrosion is a type of corrosion that occurs on the face of a China Top Slip On Flange and is frequently found in groups or clusters. Corrosion of this type causes small pits or cavities to form on the surface of the material under consideration. Pitting corrosion can be avoided to the greatest extent possible through proper alloy selection. Crevices are occurring at an alarming rate. A buildup of concentrated substance between two adjacent flanges is what causes corrosion to occur in this situation. As a result, it is difficult to inspect the areas where the corrosion is occurring, making it a particularly dangerous type of corrosion.

    The most effective method of detecting Blind Flange damage is to disassemble the joint and visually inspect the surfaces of the joint. It is not ideal due to the downtime and costs involved, but it is necessary in some cases. Recently, some advancements have been made in the use of non-destructive techniques to inspect the amount of corrosion present in the  and fitting assembly.

    PREVENTION METHODS AND STRATEGIES

    The most common method of preventing corrosion is through the maintenance of paints. The paints are made of epoxy or urethane as their base. It is very likely that the majority of paints will bond directly to the substrate and form a hard coating. If you're going to use maintenance paints, you need to make sure you use the right amount of them. If the paint is applied too thinly, the area will be ineffective, and if the paint is applied too thickly, it will cause the fasteners to seize together. Because there are a variety of Blind pipe flanges sizes, shapes, and angles, you may not be able to coat the entire area. After the  has been inspected, another layer of coating must be applied to protect it. The use of maintenance paints has the advantage of not necessitating the use of specialized equipment or hot work.

    Mechanical solutions are typically comprised of rigid clamps or coverings that are encased within the flanges. Stainless steel clamps and covers are available in both plastic and stainless steel. Another option is to use semi-solid tapes, which are a type of adhesive. They can be made of viscoelastic polymers, wax, or petroleum that has been embedded into the fabric for wrapping purposes, among other things. Semi-solid polymers are used specifically for their water-repellent properties, which makes them an excellent choice for this application.