Suitable for welding mild steel and high tensile strength 490 MPa in ship, bridge, building and pressure vessel construction.
Welding electrode LB-52-18 is a low hydrogen type insulated electrode with iron powder. Can be used well in all welding positions The welded joint has mechanical properties similar to that of the LB-52, but its direct current (DC) capability is the best among the low hydrogen class welding electrodes.
1) The electrodes should be baked before use at 300-350oC for 30-60 minutes. 2) The backstep technique (Backstep Tecnique) should be used to initiate the arc. Or it may start an arc on a small piece of iron. Before starting to weld and then move the arc flame to the area to be welded To prevent the formation of air bubbles at the beginning of the weld 3) Keep the arc distance as short as possible. To prevent the arc flame extinguished And prevent the formation of air bubbles