What is induction brazing / welding?

Hot fitting/ brazing/ welding: it mainly refers to the heating of metals between different kinds of metals or between metals and non-metal, using the principle of thermal expansion or thermal melting to connect the two together. For example: the copper core and aluminum pieces of the computer radiator, the embedded welding of speaker net, the composite of the steel-plastic tube, the sealing of the aluminum foil(tooth paste skin), the motor rotor, the sealing of the electric heating tube etc.