How to deal with rusty stainless steel screws in life

Update:14 Apr 2020
Summary:

The nails are frequently used in daily life, but after […]

The nails are frequently used in daily life, but after a long period of time, they are prone to rust. If they rust, how to loosen the non-standard stinless steel screw. Use the following aspects to solve:
1 shock: For rusty screws, do not use a wrench to tighten them hardly, to prevent the hexagonal corners of the screws from being slipped, the screws are broken or the wrench is broken. At this time, you can use a hammer to gently shake the handle of the wrench. Generally, the rusted screws can be unscrewed.


2 Knock: Use the edge of the square-top hammer to hit the corroded stainless steel nut, it is easy to loosen the nut. For example, according to the thickness of the foot pedal and the metal structure, the nuts of the fixing bolts at the two ends of the pedal of the bicycle can be used to strike the nut at the force. The nut at the cast iron can be slightly stronger, and the plastic should be tapped lightly. If it still doesn't work, you can easily remove the nut by tapping the nut with a hammer in the direction.
3 Burning: Some screws have serious embroidered erosion. If the above method still does not work, you can use "fire attack". Use a gas welding oxidizing flame to fully grill the screws and nuts, and then apply a trace of oil to the red screws. The purpose of heating the screw is to make the screw expand when heated. The purpose of dripping oil is to make the screw shrink quickly when cold, increase the gap between the screw and the stainless steel nut, and the nut can be unscrewed after the oil flows in. However, if there are plastic devices nearby, use this method with caution.
4 punches: Some devices have corroded stainless steel screws at the top, which cannot be removed with wrenches or wire cutters. Both impact methods can be used. First strike a v-shaped groove in the vertical direction of the top of the screw with a hammer and a flat screwdriver. Then, adjust the angle of the taper and impact in the direction of the screw out. After loosening, you can unscrew the screw with wire cutters. "One" or "ten" screw sliding port, you can also use this method, combined with wire cutters to screw out the screw.
5 Soldering: When disassembling the device, it is not uncommon to break the screw. Electric screws are generally not used for screws with broken tops, because the wire holes will be damaged if a little carelessness occurs. The better way is to weld a long iron block to the broken wire by electric welding.