Designing a Numerical Modeling of Induction Brazing

Induction brazing is a widely used joining process in various industries, offering efficient and localized heating for the assembly of diverse components.

At Schneider Electric®, this process is used to assemble a silver piece on a copper piece. This work focuses on the advancements and insights gained through the development of a 3D thermal and electromagnetic model with Comsol Multiphysics®.

A surface impedance method was used to describe the electromagnetic field in the metal parts. To control the electric power, a global ODE has been added to the problem. Moreover, a strong coupling between electromagnetics and thermal equations has been considered because of the strong variations of electrical conductivity with temperature. Finally, parametric studies have been performed to study the influence of the power cycle and the position of the assembled pieces.