Copper chrome-plated towel rack. The raw material is brass. The "rust" of copper is different from the rust of iron. The "rust" of copper is green, which is what people often call "patina". "Patina" is a copper oxide formed by the chemical reaction between copper and oxygen. In order to prevent contact between copper and oxygen, a layer of metallic chromium is plated on the surface. Chromium is very stable, wear-resistant, and presents a bright color, which is very beautiful. Usually, the bright layer of car door handles is metal. chromium. After electroplating, the copper towel rack cannot be in contact with the air and will not grow a "patina".
So why do some customers sometimes report rust at home? There are the following situations:
1. The coating of the towel rack is not well protected, resulting in damage to the coating, brass, and air contact, in a humid environment may grow a "patina".
2. I didn’t wipe it often. Over time, some moisture formed dirt on the surface, eventually showing spot-like black spots.
3. The water quality is poor, contains metal ions, and there is no regular wiping or hygienic dead spots, these metal ion-rich water droplets interact with the air, and rust spots may grow over time.
Alumina towel racks and pure aluminum products have poor hardness and will turn black, but oxidized alumina products have a great increase in hardness without blackening and good wear resistance. Alumina products are not It will rust.
Stainless steel towel rack, low-grade stainless steel will rust. The higher the chromium content of stainless steel, the less likely to rust. 304 stainless steel has a chromium content of 16%. It has good stability and strong corrosion resistance, even if it is placed damp for a long time. There will be no rust in the environment.
Zinc alloy towel rack, zinc alloy towels will not rust. But the quality is not as good as other materials, and it is easy to break.
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