What are the methods for disassembling welded nuts?

1. Cutting method:
Tools used: angle grinder, cutting disc, etc.
Operation steps:
Use the angle grinder to install the cutting disc, and then cut the weld point or welded part of the welded nut along the edge of the nut to separate the nut from the weldment.
When cutting, pay attention to controlling the cutting depth to avoid damaging the surface of the weldment.
After cutting, you can use tools such as pliers or wrenches to unscrew the nut.
2. Heating method:
Tools used: oxyacetylene flame welding gun, blowtorch, etc.
Operation steps:
Use oxyacetylene flame welding gun or blowtorch to heat the welded nut so that the metal at the welded part expands due to heat.
When the metal at the welded part reaches a certain temperature, quickly unscrew the nut with tools such as wrenches or pliers.
When heating, pay attention to controlling the temperature and heating time to avoid deformation or damage to the nut due to excessive heating.
3. Impact method:
Tools used: hammer, punch, etc.
Operation steps:
Aim the punch at the edge of the welded nut and gently tap the punch with a hammer to create a small gap between the nut and the weldment.
Then use a wrench or pliers to unscrew the nut.
Pay attention to the force when knocking to avoid damaging the nut and weldment.
4. Dissolution method:
Tools used: chemical solvents (such as hydrochloric acid, sulfuric acid, etc.).
Operation steps:
Apply the chemical solvent to the welding part of the welding nut to dissolve the welding metal.
After waiting for a while, rinse the welding part with clean water, and then unscrew the nut with a wrench or pliers.
Pay attention to safety when using chemical solvents and avoid contact with skin and eyes.
When disassembling welding nuts, you also need to pay attention to the following points:
Choose a suitable disassembly method based on the size, material, welding method and other factors of the welding nut.
Be careful when operating to avoid damaging the surface of the weldment and other parts.
If the welding nut is difficult to disassemble, you can try a combination of methods.
After disassembly, clean and treat the surface of the weldment to remove residual welding metal and debris.