What should I do if the iron box cover is too tight and cannot be opened?

In daily life, we will encounter situations where the iron box cannot be opened. Why is this so? What if it can't be opened? Is there a way to neither destroy the tin box nor require a very complicated approach? Today, the editor will introduce this issue to you. There are three reasons why iron boxes cannot be opened. First, the screws are too tight, the lid and the tin box are very tight, and second, it is because I haven't opened the box for a long time.

The surface of the iron box is rusted. The last case is that there is a pressure difference between the pressure generated inside the iron box and the outside, and the cover is stuck and cannot be opened. There is no way to open it. The Iron Box Factory will tell you how to open the Iron Box.

If it is too tight, the pressure difference between the inside and outside of the tin box is different. We can use a very simple method to open the bottle cap, turn the bottom of the tin box and pat it a few times, and then open it again. If it still cannot be opened, take a few more pictures and apply a little harder. Another method is to put the iron box in hot water, but be careful that only the lid part is placed in the water for a few minutes. Using the principle of thermal expansion and contraction, we can also open the iron box. If the iron box is rusted and cannot be twisted open, you can try to remove the rust and put it in hot water. The effect is the same as the former.