What is Submerged Arc Welding (SAW)?
Submerged arc welding (SAW) is a common electric arc welding process. Its principle is to form an electric arc between a continuously fed electrode and the workpiece. Welding powder covers the weld, forming a protective gas layer and slag, thus protecting the welded area.
What is the difference between ERW and SSAW?
ERW (resistance welding) pipes are made by connecting the edges of a steel coil with an electric current, forming a single straight weld; while SSAW (spiral submerged arc welding) pipes are made by feeding wire through a spiral path from a steel coil, forming multiple spiral welds.
What are the advantages of Q235B submerged arc welding?
The advantages of Q235B submerged arc welding include: high production efficiency, significantly improved arc penetration and wire deposition efficiency; high weld quality, more complete molten pool protection, and fewer impurities in the weld metal; reduced manual labor intensity; and the absence of arc radiation as the arc light is covered by the flux layer.
Does Q235B submerged arc welding require pressure?
No, Q235B submerged arc welding does not require external pressure. It is a fusion welding process that utilizes the heat generated by an electric arc to melt and join metals under a layer of flux, without any external force.
What type of welding rod should be used for Q235B submerged arc welding?
For Q235B submerged arc welding, it is recommended to use H08MnA or H08A welding wire and HJ431 flux. Submerged arc welding uses continuous wire feeding, unlike the welding rods used in manual arc welding.
