■ At the same current, thin welding wire has greater current density compared to thick welding wire, therefore, thin welding wire has higher deposition speed than the later during welding.
■ Thermal interaction of arc radiation between electrodes has high energy utilization rate, droplet transition is more thinner, welding process is more smoothly as well as forms good-looking welding joint appearance.
■ Welding wire can be placed at transverse direction or axis direction of welding joint.Position of welding wire could seriously affect the form and size of welding joint.When the welding wire arranges along axis direction of welding joint, it could form narrow and deep welding joint with deep penetration.
■ when the welding wire arranges along transverse direction,the root of welding joint position would change, it could form wide welding joint in deep penetration and form deep welding joint in small penetration.
■ High welding speed, which can realize high-speed welding. With the improvement of welding speed, could decrease accordingly, weld heat-affected zone lessens, welding deformation reduces accordingly.
■ Optimal economic performance, double wire single arc submerged arc welding operates with single supply, full load application. Easy operation, which is basically the same as single wire submerged-arc welding, however, its welding speed improves 1 times.