The Rusting Reason of Stainless Steel Laundry Cabinet

Update:20-11-2018
Summary:

Stainless steel will rust, a large part of which is cau […]

Stainless steel will rust, a large part of which is caused by improper use. Because stainless steel has a protective film on the outside, if the protective film is damaged, stainless steel will be quickly eroded. For example, organic juices such as vegetable soup, acid and alkali have erosion effects.

There are many forms of such surface film damage, and the following are common in daily life:

1. The surface of the Stainless Steel Laundry Cabinet  contains dust or other metal particles attached to other metal elements. In humid air, the condensed water between the attached material and the stainless steel connects the two into a micro battery, triggering an electrochemical reaction. The protective film is damaged, which is called electrochemical corrosion.

2. The surface of the stainless steel laundry cabinet is adhered to organic juice (such as vegetable juice, noodle soup, glutinous rice, etc.), and in the case of water and oxygen, it constitutes an organic acid, and the organic acid corrodes the metal surface for a long time.

3. The surface of the stainless steel laundry cabinet is filled with acid, alkali, and salt substances (such as alkali water and stone water splashing on the wall), causing local corrosion.

4. In polluted air (such as the atmosphere containing a large amount of sulfide, carbon oxide, nitrogen oxide), in the case of condensed water, sulfuric acid, acetic acid liquid point is formed, causing chemical corrosion.

Stainless steel is a very thin and strong and stable chromium-rich oxide film (protective film) formed on the surface to prevent the oxygen atoms from continuing to infiltrate and continue to oxidize, thereby obtaining the ability to resist rust. Once for some reason, the film is continuously destroyed, oxygen atoms in the air or liquid will continue to infiltrate or the iron atoms in the metal will continuously separate out, forming loose iron oxide, and the metal surface will be continuously rusted.

The same is true for the stainless steel laundry cabinet. The surface has a protective film to protect the stainless steel. Once the consumer uses it improperly during use and maintenance, it will have a big or small effect on the stainless steel.