Painting the surface of 301 stainless steel strip is a very common manufacturing process. The purpose of this is to better protect the stainless steel belt. Applying paint is the basic method of protecting products, and many paint maintenance and repairs are directed to the surface of steel strips. After a stainless steel belt has been put into service for a long time, it usually produces a certain degree of corrosion and damage to the coating. As long as there is damage to the paint, even small damage, such as pinholes, will cause rust spots. Rust can be as small as a pinpoint or widespread over an area, and pitting can lead to scratch corrosion. But in either case, the 301 stainless steel strip of the base material has pits.
Refinishing the surface of 301 stainless steel strip is a laborious, time-consuming task. Before any patching procedure begins, one should be aware of the many difficulties and obstacles encountered in patching, knowing that patching can also cause considerable damage to old, intact coatings.
Many repair difficulties stem from the repair method employed. If the coating method for the surface of the new 301 stainless steel belt is still used, that is, the surface is cleaned first, then the surface is sandblasted to a white level, and then the coating is applied, which is very unfavorable for the coating that needs to be repaired. First of all, the 301 stainless steel belt structure, storage tank, ship or bridge now exists as a complete unit, not a piece of 301 stainless steel belt plate can enter the automatic sandblasting line for sandblasting, so local manual sanding must be used , sand or quartz sand is used as abrasive, 301 stainless steel belt sand cannot be used, and sometimes scaffolding is required, which is very inconvenient.