Detection of weld pool width using infrared imaging during high-power fiber laser welding of type 304 austenitic stainless steel

Heat treatment of welded joints of steel 0.3С–1Cr–1Si produced by high-power fiber lasers

“…And in general to satisfy oneself of the applicability of classical approaches of material science [17,18,20,21,[34][35][36] to the welded joints of steel 0.3С-1Cr-1Si produced at high speeds using high energy sources [14,15,32]. Fig.…”

“…99.99% Argon was used as a shielding gas to protect the top part of molten pool, flow rate of the shielding gas is 17 l/min. The process stability was provided by the use of non-extreme modes of laser radiation up to 10 kW [14,15,32].…”

Quality assessment in laser welding: a critical review

“…Thus, according to the authors, an assessment procedure of optimal process parameters and consequently of qualitative welds is possible. Infrared imaging was also used in [27] for the identification of the weld pool width. On the other hand, the authors in [28] have described an online process monitoring system for quality assurance, aiming to maintain the required penetration depth, which in conduction welding is more sensitive to changes in heat sinking.…”

Weld seam profile detection and feature point extraction for multi-pass route planning based on visual attention model

“…Robotic welding processes are complex, highly nonlinear and time-varying [10]. Various factors influence welding quality, whereas plenty of different signals can reflect welding quality, such as spectrum signals [11], arc sound signals [7] and molten pools [12,13]. In recent years, multi-information acquisition and fusion for control of arc welding processes and weld quality are hot research areas.…”