How to solve the screw can not be unscrewed phenomenon

When it comes to the car slot screw, we all know that there are things used in various industries, it is used in a wide range, we all know that because of prolonged use, it is possible to cause the phenomenon of rusting screws, or the phenomenon of unscrewable, then how to solve the phenomenon of unscrewable screws?

      1, the screw manufacturer to deal with the screw can not be unscrewed method has the head of the screwdriver partially on the gas stove red, and then speedy top on that screw, slightly waiting for about 5 seconds, you will be able to screw out.

　　2, in order to unscrew the screw, screw manufacturers will be in the screw head pad something to increase the friction, such as putting some double-sided tape, non-woven fabric, etc..

　　3, can cool down to unscrew the screw, the screw manufacturer will be ablative solder hanging on the head of the torch, the screwdriver and screw good, the solder point up to stop disposal.