Spring steel strip is mostly used in the construction industry. It is also a kind of metal materials with high strength in construction. It can be well used in various metal resources. Because of its wide application in construction industry, it also has certain requirements for the performance of spring steel strip. Do you know why the spring steel strip will not be corroded and worn?
1：Spring strip is a product of modern science and technology
Since the spring steel strip was created, it has integrated the image of modern materials and the excellent reputation in construction and application, which makes its competitors admire.
As long as the steel grade is selected correctly, the processing is appropriate and the maintenance is appropriate, the spring strip steel will not have corrosion, pitting corrosion, corrosion or wear. Spring steel strip is still one of the high strength metal materials for construction. Because of the excellent corrosion resistance of spring steel strip, it can make structural components adhere to the integrity of engineering design for a long time. The spring steel strip also integrates mechanical strength and high extensibility, which is easy to process and manufacture components, and can meet the needs of builders and structural designers.
2：Why is spring steel strip corrosion resistant?
Spring strip is a kind of metal material with high strength in construction
All metals react with oxygen in the atmosphere to form an oxide film on the surface. The iron oxide formed on the common carbon steel continues to be oxidized, which makes the corrosion expand continuously, and then forms the hole. The surface of carbon steel can be ensured by electroplating with paint or oxidation resistant metals (e.g., zinc, nickel and chromium), but, as is known, this protection is only a thin film. Assuming that the cover is damaged, the steel below begins to rust.
The corrosion resistance of spring steel strip depends on chromium, but the protection methods are different because chromium is one of the components of steel.
When the increase of chromium reaches 10.5%, the atmospheric corrosion resistance of steel increases significantly, but when the chromium content is higher, the corrosion resistance is still feasible, but not significant. The reason is that the type of surface oxide is changed to be similar to that of pure chromium metal when chromium is used to alloy steel. This tightly adhered chromium rich oxide protects the surface from further oxidation.
Therefore, all the spring steel strips have the same characteristic, that is, the chromium content is more than 10.5%.
The above is some introduction of spring strip steel, I believe you also have an understanding. Although the oxide layer formed on the surface is very thin, the natural luster of the steel surface can be seen through it, so that the spring steel strip has the same surface, but its characteristics are very good. Moreover, assuming that the surface layer is damaged, the exposed steel surface will react with the atmosphere to repair itself and form this "passivation film" from the beginning to continue to protect.
