One: If the lock has rusted and cannot be opened with a key, what should be done?
1、Rust remover
If a padlock is severely rusted and the key cannot be turned, try using a rust remover. Clean the surface of the padlock, then apply a few drops of rust remover into the keyhole, and slowly insert the key into the padlock, moving it back and forth. once the padlock and key engage properly, the padlock should open easily.
2、Pencil lead
If you don't have rust remover at home, you can use shavings from a pencil as an alternative. Take a regular pencil, shave off the lead, and then apply the shavings to the keyhole. Rub the key back and forth several times to unlock the door.
3、Soap
You can also use soap to unlock a rusted lock. Dissolve soap in water, create bubbles with your hands, and then dip the key into the soapy water, along with a small amount of the solution, and use the key to wiggle and turn, which should unlock the lock.
Two. How to solve the problem of a lock being exposed to rain and rusting, making it impossible to open.
If the lock is severely rusted, it is best to first remove the rust from the lock surface to ensure proper functioning. How can the rust on an iron lock be effectively removed? Rust can be removed by sanding or by using a toothbrush dipped in vinegar.
1、Use sandpaper to grind.
Scraping with sandpaper is a common method, but sandpaper surfaces are not smooth and can cause friction when encountering rust. When scraping, it is necessary to choose the appropriate sandpaper. Common types of sandpaper include diamond sandpaper, synthetic diamond sandpaper, and glass sandpaper, which are commonly used for metal scraping and are usually water-cooled. These types of sandpaper are further divided into various types, and we can choose the appropriate one based on our needs. However, this method is relatively laborious and may require a long time to achieve the desired effect. If the area of rust is too large, it is not recommended to use sandpaper.
2. Use a toothbrush and vinegar
Vinegar contains acidic substances that can corrode rust on the lock mechanism. Using a toothbrush or other brush, apply vinegar to the rust, which is a convenient method. However, it is not recommended to submerge the entire lock mechanism in vinegar. Since vinegar is mostly water, if the lock mechanism gets wet and cannot be dried, it will rust again. Therefore, when using vinegar, only apply it to the rust with a toothbrush. It is not necessary to apply vinegar to the entire lock mechanism. If the toothbrush is too soft, you can use a brush with a harder bristles, as long as it can remove the rust.