Method and device for performing electric magnetization resistance welding-braze welding compounding on dissimilar materials

The invention discloses a method and a device for performing electric magnetization resistance welding-braze welding compounding on dissimilar materials by assistance of an applied magnetic field. In the process of performing resistance welding-braze welding on the dissimilar metal material, a liquid solder is subjected to auxiliary electromagnetic stirring and ordered control, and the molten liquid solder is subjected to the reinforced booster action of electromagnetic stirring and electric magnetization by using an external applied alternating magnetic field which is generated by a magnet exciting coil in a welding area so as to promote directional flow of the liquid solder, and rupture of membranes, wetting, spreading and diffusion of the liquid solder on the surface of the metal material with a higher melting point, promote the liquid solder and a base metal which is molten by the metal material with a lower melting point to be mixed fully, promote interdiffusion of elements and compositions between the solder and the base metal and alloying between the two, improve uniformity of compositions of a soldered seam, reduce the weld defects, optimize the texture and the performance of the soldered seam, and improve the resistance soldered joint; and the device has the advantages of simple structure, flexible application, lower cost, good effect, and easy implementation.