For body parts, especially those damaged by corrosion, galvanized metal is used. Before welding, the zinc layer does not need to be removed (clean only when soldering). Increase welding current by 10-30%, use hardened copper electrodes.
Precautions: When welding galvanized steel, poisonous zinc oxide is produced, so the workplace must be well ventilated.
On the parts of a charged air conditioner, neither welding nor soldering can be carried out. This also applies to welding and soldering work on those parts of the car, which can heat up parts of the air conditioning system.
Caution: The air conditioner refrigerant circuit must not be opened. If the refrigerant comes into contact with the skin, frostbite may occur.
During painting work in the drying chamber or in the heated zone, the car should not heat up more than 80°C, because. Otherwise, the vehicle's electronic control units may be damaged.
Remove the plastic protection of the body in places using a rotating steel brush, or it must be heated with a special hair dryer to about + 180°C and cleaned with a spatula. It must be borne in mind that when PVC-based material is fired or heated, highly corrosive hydrochloric acid is formed, and in addition, harmful vapors are emitted.