Dewelding device, system and method

The invention discloses a desoldering device, equipment and method, the desoldering device comprises a microwave heater, the microwave heater is used for heating welding spot welding flux with the surface coated with scaling powder until the welding spot welding flux is molten, the scaling powder can be heated by the microwave heater, and the boiling point of the scaling powder is higher than the melting point of the welding spot welding flux. Due to the fact that the scaling powder contains water molecules or hydrogen and oxygen atoms, when the scaling powder is placed in the microwave heater with the specific wavelength, when the scaling powder on the surface of the welding flux is heated, the temperature of the scaling powder is increased, and heat is conducted to the welding flux. The boiling point of the selected soldering flux is higher than the melting point of the soldering flux, and the soldering flux can be melted before the soldering flux reaches the boiling point by means of the heat conduction ef