Author(s)

H. Runnemalm, L.E. Lindgren, M.O. Nasstrom & C. Lampa

Abstract

The paper focus on the problem of obtaining accurate thermal fields despite the uncertainty of the thermal heat input and thermal properties at high temperatures. The net heat input is the primary factor for obtaining an accurate temperature field. A good correlation between simulations and experiments is obtained. The net heat input during laser welding a bead on a thin plate made of an austenitic stainless steel is determined using a water calorimeter. Transient temperature is measured by thermocouples. The finite element method is used in the numerical simulation of the process. Introduction In some cases, laser welding is a very cost effective manufacturing method compared to regular joi

Keywords