The thermos cup is definitely the most appropriate thing in winter. With the thermos cup, you can drink hot water anytime and anywhere. Isn't it a very pleasant and warm thing? But the thermos cup will rust easily when it is used for a long time. Do you know why?
Stainless steel insulation cup will also rust under certain conditions, or the product itself will be affected by external conditions, or improper use will cause rust. Here is a brief analysis of the causes and countermeasures.
1. If there is too much iron in the material, there will be rust. It is recommended to check whether the manual of purchasing vacuum insulation Cup indicates the material. 430 and 201 materials are easy to rust.
2. If it is water rust, the red spots similar to rust are the result of the action of minerals (calcium, magnesium, iron) contained in the water, and can be cleaned according to the following methods.
(1) Dilute citric acid (about 10g) with warm water and pour into a vacuum holding cup.
(2) After 2-3 hours, wash it with a soft brush, and then rinse it with clean water. It can also be diluted with vinegar and put into a heat preservation cup, placed, and then washed;
(3) Allow to dry well.
3. If the vacuum cup is opened, the dust will be on the surface of the inner wall of the cup, which may also cause rust. Therefore, it is recommended to close the cover when you do not use the vacuum cup.
The baker's cup and tiger's cup are made of 304 medical stainless steel. They are corrosion-resistant. As long as they pay more attention to cleaning and maintenance during use, they will avoid rusting.