Impact analysis of the hybrid laser arc welding parameters of structural steels: State of the art

Abstract

The effectiveness of the hybrid laser arc welding is based on the combination of two heat sources in a single welding process, resulting in welding process that is characterized with higher welding speed, increased productivity, deeper penetration, stable process, better gap bridging ability, less heat input to the welding material and high flexibility. The physical complexity of the process is a main disadvantage, i.e. an increased number of parameters that need to be synchronized and optimized in order to obtain a perfect weld. In this paper, based on the previous experimental research, a complete analysis of the primary hybrid laser arc welding parameters was performed, and general conclusions were drawn regarding their impact on the welding process stability, the weld shape and its mechanical characteristics. The introduction part contains a general analysis of previous research. In the second part, characteristics of the performed hybrid welds in structural steels and detailed analysis are presented. In the final part, general conclusions are made regarding the influence of the primary hybrid laser arc welding parameters on the structural steel.