What work needs to be done before pickling the rolling surface of stainless steel strips

The reason why stainless steel belts are widely used is because the material has a very good ability to adapt to the environment and has high acid and alkali corrosion resistance. Commonly used stainless steel material forms mainly include strips, plates, wires, etc. The following takes stainless steel strips as an example to describe what needs to be done before pickling the rolling surface.

Stainless steel strips are made by rolling steel ingots. However, it should be noted that the atmosphere is very powerful, and many materials will be corroded and damaged by it. Although stainless steel strips have strong corrosion resistance, they still cannot withstand long-term atmospheric erosion. Over time, an oxide film will form on the surface of the stainless steel strips, and the surface of the stainless steel strips itself will turn black and lose its original beautiful luster. , although the existence of this oxide film can easily protect the stainless steel belt to a certain extent, this oxide film is just a thin film. If it is not specially treated, it will affect the performance and application of the stainless steel belt. Therefore, in the official Be sure to go through the pickling process before application.

In addition to the oxidation that will occur if the surface of the stainless steel strip is exposed to the atmosphere for too long, dust and pollutant particles in the atmosphere will also directly contact the surface of the stainless steel strip, causing contamination of the surface of the bar. In order to remove the pollution on the surface of these stainless steels, it is easy for the stainless steel strips to turn acid white after processing, so this pickling procedure is necessary, but what aspects should be paid attention to during pickling?

Pickling of stainless steel strips not only removes contaminants on the surface of the rods, but also removes traces of rust and keeps the surface of the stainless steel strips original clean. However, if you do not pay attention to protection during the pickling process, it will also destroy the performance of the stainless steel strips. , so it is best to passivate it before pickling the stainless steel strip. After passivation, a dense oxide film will be formed on the surface of the stainless steel strip. This oxide film will prevent the stainless steel body from reacting with external chemicals. , the corrosion resistance of stainless steel strips can be enhanced through such treatment.

Corresponding preparations must be made before cleaning the stainless steel strip. The garbage and pollutants on the surface of the stainless steel strip must be removed. In addition, the burrs and spatter formed on the surface of the stainless steel strip during processing must also be removed. Only by removing After the surface of the stainless steel belt is cleaned and then dried, the formal pickling process can be carried out.