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Stainless Steel Shower Hose is a must-have bathroom accessory in many families, but many people find that it is easy to rust during use. Why is it so easy to rust? Let's learn about it.
The appearance of the stainless steel shower hose is made of stainless steel, and the stainless steel will react with the oxygen in the atmosphere, which will form an oxide film on the surface of the material.
After the iron oxide is formed on the surface of the steel, under the action of oxygen in the air, it will continue to oxidize, and the rust will continue to expand over time, and holes will be formed.
For this reason, the manufacturer chooses to use oxidation-resistant steel. In order to further increase its corrosion resistance, electroplating will be performed on the surface of the oxidation-resistant steel, but it does not mean that the electroplated steel will not rust and corrode, and the electroplating layer Just a thin film on the surface, this protection is limited, once the protective layer is destroyed, the steel surface will start to rust.
Generally speaking, the corrosion resistance of stainless steel is directly related to the content of chromium in the material. If the amount of chromium added in the material is 10.5%, the corrosion resistance of the steel can be greatly increased, but it does not mean The higher the chromium content, the higher the corrosion resistance of the steel. According to the research, although the content of chromium in the steel increases, the overall corrosion resistance of the steel does not increase significantly.
This is mainly because when the steel is alloyed with chromium, the type of surface oxide changes so that the surface becomes an oxide similar to that formed on the surface of pure chromium metal. The tightly adhered chromium-rich oxide will protect the surface of the steel, thereby effectively preventing the steel from oxidizing.
It's just that this layer of the oxide layer is relatively thin, through which the natural luster of the stainless steel surface can still be retained, so that the characteristics of the stainless steel material can be retained, but once this layer of the oxide layer is damaged, the underlying stainless steel surface will be exposed. In the air, but after the stainless steel surface reacts with the atmosphere, this oxide layer will have a self-healing process, thereby forming a passivation film again to protect the steel. However, if the oxide layer on the surface of the stainless steel is completely destroyed, the protective effect will no longer be available, and the surface of the stainless steel will chemically react with oxygen, moisture, and salt in the atmosphere, resulting in rust.