Submerged arc welding is one of the most widely used welding processes for joining thick steel sections and is particularly effective when welding Strenx 700 plates. This welding process uses a continuously fed electrode and a flux shield, generating high heat to melt the steel. While submerged arc welding may be a relatively simple process, there are still a few things to remember. This blog will discuss how to submerge the arc Strenx 700 plate for maximum quality and efficiency.
What are Strenx 700 plates?
Strenx 700 is an ultra-high-strength steel plate made by SSAB, a Swedish specialty steel producer. It is a quenched and tempered structural steel with a high yield strength of up to 890 MPa (131 ksi). Strenx 700 provides excellent weld ability, bending, machinability and cutting performances and superior impact and fatigue resistance in even the most extreme conditions. Its mechanical properties make it ideal for components exposed to tough conditions, such as heavy lifting equipment, cranes and other demanding applications. The steel also features good formability while maintaining its strength properties so that it can be used for stress-bearing structures and decorative elements with beautiful finishes like mirror polishing or surface treatments like Mat Duotone etching patterns.
How to Submerge Maximum Quality and Efficiency
Choose the right equipment and materials.
Selecting the right equipment and materials when welding Strenx 700 plates is crucial. The welding machine must have a high current capacity and an appropriate wire feeder to handle the high-density wire. The flux used should also be specially formulated for submerged arc welding on Strenx 700 plate.
Prepare the plate surface thoroughly.
Surface preparation is critical for achieving high-quality welded joints. The surface of the Strenx 700 plate should be clean and free of any contaminants such as rust, paint, or grease. Grinding or blasting the surface with an abrasive material can also help to remove any impurities that may have been missed during cleaning.
Control the welding parameters.
To ensure a high-quality weld, it is crucial to control the welding parameters. The electrode should be positioned at a precise distance from the work piece, which can be achieved with the help of a guide. The welding speed should also be adjusted to ensure consistent heat input.
Use mechanized welding equipment.
Submerged arc welding can be done both mechanized and manually. However, mechanized welding is often recommended for welding Strenx 700 plates since it offers better control and consistency. Mechanized welding equipment can ensure that the electrode is held at the correct distance from the work piece and that the welding speed is uniform.
Post-weld treatment
Once the weld has been completed, it is essential to ensure the weld area remains protected from oxidation. Post-weld treatments can include cleaning, grinding, and painting the weld joint. Care must be taken to ensure that any post-weld treatment does not compromise the integrity of the welded joint.
Conclusion
Submerged arc welding of Strenx 700 plates can be an effective way to join steel sections. To achieve maximum quality and efficiency, selecting the right equipment and materials is crucial, preparing the plate surface thoroughly, controlling the welding parameters, using mechanized welding equipment, and correctly carrying out post-weld treatment. Proper attention to these factors will help ensure high-quality welded joints that can withstand rigorous use in demanding environments.
