Soaking the aluminum surface with alkali solution can remove the oxide layer on the surface, and then washing it with clear water. You can soak aluminum in acetic acid, put on gloves and clean aluminum with water. The oxidized surface of aluminum can be polished with fine sandpaper, and the effect of removing oxidation can also be achieved.

The main function of the pot cover is to keep the temperature of the substances in the pot and prevent the substances in the pot from spilling liquid and escaping steam due to factors such as heating. With the progress of society and the development of science and technology, the meaning of pot cover is getting richer and richer.

In layman's terms, satellite antenna is also called pot cover. In the field of modern industry, there are all kinds of pots with all kinds of shapes and lids, which play an irreplaceable role in different environments.

The pot cover is generally round with a knob in the middle. In ancient times, the texture of the pot cover was mostly wood, generally metal, and aluminum was common. In Yunnan, there is also a straw pot cover similar to a straw hat.

Aluminum pot has the advantages of light weight, durability, fast heating, uniform heat conduction and no rust. It is understood that aluminum products mainly include refined aluminum (soft aluminum) products and cast aluminum (hard aluminum) products, which are made of aluminum and aluminum alloys. Surface colors can be divided into white, light yellow and other colors. White aluminum products are divided into casting and stamping.

After turning and mechanical polishing, the surface of cast aluminum products is white, but the metal structure is loose and there are some casting defects. Stamped aluminum products with washed white, frosted and mechanically polished surfaces have a natural oxide film with a thickness of only 0.0 1-0. 15 micron, which is thin and uneven and easy to be scratched or worn by machinery.

Yellow aluminum product is a stamping product. After anodic oxidation, a yellowish artificial oxide film is formed on its surface. In general, the thickness of oxide film is 5-20μm, which is uniform and compact. Under the action of strong alkali, 100 second will not damage the film. Therefore, light yellow aluminum products are the best, beautiful, easy to remove dirt, and have strong corrosion resistance and wear resistance. Koreans often use Huang aluminum pot to cook noodles.