Stainless steel screws are frequently used in daily life, but they are easy to rust over time. If they rust, how to loosen stainless steel screws. Use the following aspects to solve:

1 Shock: For rusty screws, never use a wrench to tighten them, to prevent the six-sided edges and corners of the screw from being screwed, the screw is broken or the wrench is broken. At this time, you can gently shake the handle of the wrench with a hammer, and generally rusty screws can be shaken off.

2 Knock: Use the edge of the square top hammer to knock the corroded stainless steel nut, which can easily loosen the nut. For example, the nuts of the fixing bolts at both ends of the pedal of a bicycle can be used to grasp the force of the nut according to the thickness of the pedal and the metal structure. The nut on the cast iron can be slightly stronger, and the nut on the plastic should be tapped lightly. If it still does not work, you can easily remove the nut by tapping the nut in a circular motion with a hammer.

3. Burning: Some screws are severely corroded, and the above methods still do not work, you can use "fire attack". Fully roast the screws and nuts with gas welding and oxidation flame, and then drip a trace of oil on the red screws. The purpose of heating the screw is to heat the screw to expand. The purpose of dripping oil is to make the screw shrink quickly when cold, increase the gap between the screw rod and the stainless steel nut, and the nut can be unscrewed after the oil flows in. But if there are plastic devices nearby, use this method with caution.

4 punch: The top of the stainless steel screw of some devices is corroded and out of shape, and it cannot be removed with a wrench or wire cutter. The impact method can be used. First use a hammer and a flat screwdriver to hit a v-shaped groove in the vertical direction of the top of the screw. Then, adjust the angle of the punching cone and impact in the direction of screwing out. After loosening, you can use wire cutters to unscrew the screw. When the "one" or "cross" screw is slippery, this method can also be used to unscrew the screw with wire cutters.

5 Welding: It is not uncommon to unscrew the screws when disassembling the device. For screws with broken tops, electric drills are generally not used, because the thread holes will be broken if you are not careful. The better way is to weld a long piece of iron on the broken wire by electric welding. The cross section of the iron block is confirmed by the diameter of the stainless steel screw.