Model of depositing layer on cylindrical surface produced by induction-assisted laser cladding process

Abstract

A model of hybrid cladding on a cylindrical surface is built and numerically solved. Heating of both substrate and the powder material to be deposited on its surface is realized by laser beam and preheating inductor. The task represents a hard-coupled electromagnetic-thermal problem with time-varying geometry. Two specific algorithms are developed to incorporate this effect into the model, driven by local distribution of temperature and its gradients. The algorithms are implemented into the COMSOL Multiphysics 5.2 code that is used for numerical computations of the task. The methodology is illustrated with a typical example whose results are discussed.

Keywords

• laser cladding
• induction preheating (postheating)
• time-variable geometry
• numerical solution
• magnetic field
• temperature field
• finite element method
• 44.05.+e
• 44.10.+i
• 41.20.-q