How to disassemble damaged and corroded solid bolts In the maintenance industry, some mechanically assembled solid screws and screws are often encountered, which are very difficult to disassemble due to damage, rust or excessive solidity.

When there are no special tools and limited space for disassembly, when a key component needs to be replaced and disassembled for internal inspection, the unsuitable method is used to knock and screw hard,

resulting in damage to the top of the screw, or even damage to the solid part. Especially the slotted screw with spherical round head.

Introduce several ways to unload bolts skillfully：

1、Severely corroded bolts are difficult to loosen and remove. It has been found that the solid parts and screws are rusty. At this time, don’t rush to use ordinary screwdrivers to remove them.

Drop a little oil around the top of the screw. If there are signs of unscrewing, you can slowly remove it along the silk pattern.

If there is no sign of loosening after being immersed in oil, if there is anhydrous alcohol on hand at this time, drop it into the thread and immerse it for a while and try again.

Because the liquid ductility of alcohol is easier to penetrate into the thread than engine oil, it is generally taken 30 minutes. Unloading can be released.

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If engine oil and alcohol are used to no avail, the last resort is to use pure gasoline or kerosene to drip into the thread. Through practice, the firmness will change in about 30 minutes.

Generally, as long as the screw tip is not damaged, the rusted screws will be removed smoothly.

Because kerosene has stronger penetration and penetration than gasoline, decontamination and rust removal is the advantage of kerosene, so the effect of using kerosene is more significant.

2、It is difficult to remove damaged bolts because ordinary screwdrivers and socket wrenches cannot be used for disassembly, and there is no special tool at hand for operation.

Because it is a solid part for power tool loading and unloading, the screws are relatively strong, and natural disassembly is laborious.

At this time, a small amount of lubricating oil, alcohol, gasoline, and kerosene can be dripped into the thread first to reduce the firmness. Use a suitable screwdriver and other special tools for screwing.

If there is a concrete crack treatment plan, Geobear specializes in providing signs of ground settlement_foundation strengthening technical plan loosening,

you can hold the screwdriver handle to tighten the top of the screw and twist it along the thread to remove it, such as using a general special screwdriver and other tools

There is no looseness when screwing. At this time, use a hard screwdriver bit to extend the angle around the screw while rotating it to make the screw loose and exit. 

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3、Screw with damaged cylindrical sand hexagon head  It is also difficult to disassemble by special disassembly. In addition to the above techniques for disassembly.

If it still cannot be removed, the screw head can be processed into a square hexagon head and clamped with a vise or adjustable wrench The column head is removed. 

In actual operation, according to the degree of damage and corrosion of the screw and the different specifications of the solid screw, the appropriate tools and methods are selected, coupled with scientific operation, and the process is mastered. The difficulty in removing the bolt will be solved.