Water rust treatment method:

① Boil yam in a new kettle to remove dirt. Put more than half of the yam in the kettle, fill it with water, cook the yam until cooked, and then boil it again to prevent water accumulation and rust. But be careful not to scrub the inner wall of the kettle after boiling yam, otherwise it will lose its descaling effect. For old kettles that have already accumulated rust, boiling them once or twice using the above method not only gradually removes the original rust, but also prevents further accumulation of rust.

② Heat expansion and cold contraction to remove rust. Place an empty kettle on the stove and boil it to dry the water in the rust. When there are cracks or a "bang" sound at the bottom of the kettle, remove the kettle and quickly pour in cold water, or wrap the handle and spout with a cloth, hold them with both hands, and quickly sit the dried kettle in cold water (do not let water pour into the kettle). Repeat 2 to 3 times, the rust on the bottom of the pot will fall off due to thermal expansion and contraction.

③ If a kettle has rust, you can put a few spoonfuls of vinegar into water and boil for one or two hours to remove the rust. If the main component in water rust is calcium sulfate, the pure alkali solution can be poured into a kettle and boiled to remove scale.

④ Masks prevent water accumulation and rust. Place a clean mask in a kettle, and when boiling water, the rust will be absorbed by the mask.

⑤ Magnetization: Placing a magnet in a pot not only prevents scaling, but also magnetizes boiled water and has the effect of preventing and treating constipation and throat inflammation.

⑥ When using an aluminum kettle with water rust, add 1 teaspoon of baking soda and boil for a few minutes to remove the rust.

⑦ A pot that boils eggs to remove rust and boiling water is hard to remove after prolonged use. If boiled twice with it, the ideal effect will be achieved.

⑧ After using the aluminum pot or aluminum pot for a period of time, a thin layer of rust will form on the potato skin. Put the potato skin inside, add an appropriate amount of water, bring to a boil, and cook for about 10 minutes to remove.

文章源自：开平开水器龙头     http://www.kplongyi.com/