How to deal with the flange after rust?

Do you know what to do after the flange rusts?

Large stainless steel flanges will rust in general environment, mainly on any surface, free iron will rust and cause corrosion of stainless steel. Therefore, it must be cleared. Floating powder can generally be removed with the dust. Some have strong adhesion and must be treated with embedded iron.

317L stainless steel flange

317L stainless steel flange

In addition to dust, there are many sources of surface iron, including cleaning with ordinary carbon steel wire brushes and shot blasting with sand, glass beads or other abrasives that have been used on carbon steel, low alloy steel or cast iron parts, or Grind the aforementioned non-stainless steel products near the stainless steel flanges and equipment. In the process of unloading or hoisting, if no protective measures are taken for the stainless steel flange, the steel wire rope, the spreader and the iron on the work surface are easy to embed or contaminate the surface.

Stainless steel flange rust removal method: immerse the flange in hydrochloric acid, the principle is to reduce the rust to iron, but this method has a certain degree of danger. Hydrochloric acid is a corrosive substance and harmful to the human body. On the human body, neutralize the prepared flange with alkali instead of touching your hands directly.