Prediction of Distortion Behavior due to Load Thermal Laser Welded Low Carbon Steel with Stainless Steel 304 Based on Computation Simulation

The purpose of the study is to predict deformation of a weldment in dissimilar laser welding process of low carbon steel and stainless steel 304 based on numerical and computation simulation approach. Different characterization of material on heat expand result influent distortion direct. The temperature rated effect of welding process direct to low carbon steel that caused heat expansion value of stainless steel 304 less than low carbon steel. Computer simulation or finite element model (FEM) used to understand the response and behavior of weldment during the welding process. Thermal expansion of weldment often leads to thermal stress in the weldment. The resulting temperature distribution, heat flux distribution and structural response under arc current welding constitute knowledge in assuring design success of welding product. The calculation results used FEM shows heat rated direct to low carbon area and high distortion occur there. Stainless steel with low expansion value has slow heat rated expansion and low distortion.