Stainless steel is a steel that can be used in all walks of life. It is because of its strong adaptability, high acid and alkali resistance, and it is not easy to be eroded, so that it can be made into various stainless steel profiles and play a huge role in social life. Stainless steel is divided into stainless steel bars, stainless steel plates, stainless steel profiles and stainless steel wires. Among them, stainless steel bars are widely used. There are many series for stainless steel bars, and 2 series, 3 series and 4 series are stainless steel bars. The variety of materials, and stainless steel bars are also divided into round bars, square bars and hexagon bars.
Stainless steel bars are formed by rolling steel ingots. We all know that the power of air is huge. The air allows us to breathe and give us life, but at the same time it is also a destroyer of many materials. Things will stay in the air for a long time. Because of the growth and growth of microorganisms, the stainless steel bar, although it is a hard thing, can not withstand the erosion of the air. After a long time, an oxide film appears on the surface of the steel, and the steel becomes dark and loses. The original light and beauty, some people may say that with this layer of oxide film, it can be used for protection. In fact, the oxide film is only a film. If this film is not treated, it will affect the properties of the stainless steel rod. And use, so a procedure to go through is pickling.
In addition to the surface of the stainless steel bar exposed to the air for a long time will be oxidized, dust and some pollutants in the air will directly contact the surface of the steel, causing contamination of the surface. In order to remove these pollutions from the surface, the stainless steel bar is processed. After the acid white, the pickling process is understandable, but what should you pay attention to when pickling?
Stainless steel bar pickling is to make the surface of the bar free of contaminants and remove the traces of corrosion, but also a clean surface, but we all know that pickling will destroy the performance of stainless steel bars if not paying attention to protection. Passivation is required before pickling, and a dense oxide film is formed on the surface of the stainless steel bar by passivation. With this oxide film, the reaction between the steel body and the chemical substance is avoided, and the steel rod is treated in this way. Corrosion resistance is enhanced.
Stainless steel bars must be prepared before cleaning. First, remove the garbage and contaminants on the surface of the bar. In addition, the burrs and splashes formed on the surface should be cleaned because they are not easy to clean. It should be wiped with gasoline or washed with organic solvent. The surface of the contaminant is very large. It can be cleaned with caustic soda solution. After cleaning the surface, it should be rinsed with water. After washing, dry it, then it can be officially The pickling process is gone.
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