Application of manual laser welding

Abstract

Today, laser welding technology is applied across nearly all industrial sectors, including aerospace, shipbuilding, welding of carbon and stainless steels, and the joining of components machined to final dimensions, etc. Laser welding is characterized by a narrow heat-affected zone (HAZ), minimal distortion, low heat input, high welding speeds, and flexibility in process mechanization and automation. However, the disadvantages associated with this process include high investment costs, demanding part-fixturing and positioning requirements, stringent safety regulations, etc. The present study presents initial experiences with the application of this process in the production of compensator components. Samples of X6CrNiMoTi17-12-2 (W.Nr.1.4571), with dimensions Ø74.1 mm x 1.0 mm, and samples of the same material with dimensions of Ø72.1 mm x 5.1 mm were welded using TIG and laser welding processes, as well as samples of X6CrNiMoTi17-12-2 (W.Nr.1.4571), with dimensions Ø74.1 mm x 1.0 mm, and samples of P355NH (W.Nr.1.0565), with dimensions of Ø72.1 mm x 5.1 mm. The results of joint geometry evaluation, HAZ width measurement, and hardness testing are comparatively analyzed. Based on these findings, conclusions are drawn, and recommendations for the application of the manual laser welding procedure are provided.