DEVELOPMENT OF NEW GENERATION FLUX-CORED WIRES FOR GAS-SHIELDED ARC WELDING OF JOINTS OF LOW-ALLOY STEELS WITH ULTIMATE STRENGTH OF 640...940 MPA

摘要

The results of studying the properties of flux-cored wires with a metal core are considered, which were used as a base for suggesting approaches to development of compositions of flux-cored wires for gas-shielded arc welding of joints of low-alloy steels of higher and high strength. Application of dynamic thermal analysis of powder mixtures that model the wire core, enabled obtaining information on kinetics of the processes which develop at heating and melting of flux-cored wire compositions that allows optimizing the core compositions. Recommendations were developed on selection and application of flux-cored wires for welding low-alloy high-strength steels.