Research on the Influence of Metal Transition Mode on Welding Fume between Flux Cored Wire and Solid Wire
During the welding process of melt inert-gas welding(MIG welding),different metal transfer behaviors may affect the metallurgical process of welding fume generation.For this purpose,a systematic study was conducted on the correlation between the metal transition mode of MIG welding using solid core welding wire and flux core welding wire and welding fume.The metal transition modes of two types of welding wires under different processes were captured using a metal transi-tion collection system,and the amount and particle size distribution of welding fume under different metal transition modes were analyzed using a fume collection device and a laser particle size analyzer.The results show that the total amount of fumes by solid wire is directly proportional to the frequency of metal transition in short-circuit transition and spray transition modes,while in globular transition mode,it exhibits an inverse law;The total amount of fumes by flux cored welding wire is directly proportional to the frequency of metal transition.The particle diameter of fumes in solid wire welding is mainly dis-tributed between 0.1～10 μm,there are a large number of large-sized fume particles in the short circuit transition welding pro-cess.The fume particle diameter of flux cored welding wire is mainly distributed between 0.1 and 100 μm,large particles are mainly distributed during short circuits and globular droplet transitions.
welding fumemetal transfertotal amount of fumesparticle diameter
万方数据
维普
