Submerged arc welding is one of the most efficient mechanized welding methods in today's production, also known as submerged arc automatic welding or flux-cored automatic arc welding.
Advantages:
High production efficiency
This is due to the fact that, on one hand, the conductive length of the welding wire is shortened, resulting in an increase in current and current density, which significantly enhances both the arc penetration depth and the efficiency of the wire melting. (Generally, a single-sided melting depth of up to 20mm can be achieved without pre-etching.) On the other hand, due to the insulating effect of the flux and slag, there is minimal heat radiation loss from the arc, and spatter is reduced. Although there is an increase in heat loss for melting the flux, the overall thermal efficiency is still significantly improved.
High weld quality
The slag effectively isolates air, ensuring good protection. Welding parameters can be maintained stable through automatic adjustment, with minimal requirements for the welder's skill level. The weld composition is stable, and the mechanical properties are quite good.
Excellent working conditions
In addition to reducing the labor intensity of manual welding operations, it has no arc radiation, which is a unique advantage of submerged arc welding.
