Impact of the expiry of the protective gas velocity on the transfer of electrode metal droplets
The main role in the formation of the chemical composition and properties of the weld metal of welded joints is given processes occurring in a drop of molten metal and the electrode metal in the weld pool. In welding with consumable electrode gas jet protection, except under certain conditions the main forces for drop electrode metal strength is significantly affected by the jet action of the gas-dynamic protective gas, which depends on the method and composition of shielding gas welding zone. According to the research found that when the expiration of the shielding gas welding speed on a section of the nozzle change processes occurring in the welding zone. There is a change in the frequency of electrode metal droplet transfer to the weld pool and the chemical composition of the weld metal.