Thermal Model of Rotary Friction Welding for Similar and Dissimilar Metals

Abu Dawood,Adnan Maqsood,Mansoor Siddiqui,Shahid Butt,Ghulam Hussain,Faping Zhang

doi:10.3390/met7060224

Abstract

Friction welding is one of the foremost welding processes for similar and dissimilar metals. Previously, the process has been modeled utilizing the rudimentary techniques of constant friction and slip-stick friction. The motivation behind this article is to present a new characteristic for temperature profile estimation in modeling of the rotary friction welding process. For the first time, a unified model has been exhibited, with an implementation of the phase transformation of similar and dissimilar materials. The model was generated on COMSOL Multiphysics® and thermal and structural modules were used to plot the temperature curve. The curve for the welding of dissimilar metals using the model was generated, compared and analyzed with that of practical curves already acquired through experimentation available in the literature, and then the effect of varying the parameters on the welding of similar metals was also studied.

Highlights

IntroductionThere are two main ways of integrating the components, i.e., fusion welding and solid state welding
Welding is a fabrication technique used extensively for joining metals and plastics
This is because the thermal conductivity of Aluminum is far greater than that is Aluminum

Summary

Introduction

There are two main ways of integrating the components, i.e., fusion welding and solid state welding. The joining edges are melted, while in solid state welding, these edges are heated to red-hot temperature and pressurized to create a joint. The former method has a disadvantage of substantial micro-structure and property changes. The latter method does not demonstrate such changes. Friction welding is a solid state welding process. The American Welding Society defines friction welding to be a joining process, using compressive force, utilizing heat from frictional contact, resulting into a joint without employing filler material, flux or shielding gases

Results

Discussion

Conclusion