What welding rod is used for the welding of Q345 material?
J503, J502, J507, J506, J507GR and J507RH grade electrodes can be used for welding.Welding hot rolling and normalizing steel, is the main basis for the guarantee of weld metal strength, plasticity and impact toughness and other mechanical properties of base metal and matching of welding thick component, in order to prevent welding crack, can adopt "undermatched" principle, namely the selection of weld metal strength is lower than the base metal electrode. When welding low carbon quenched and tempered steel, the hydrogen should be strictly controlled, so the low hydrogen or ultra low hydrogen electrode should be used. In order to ensure the plasticity, toughness and strength of weld metal, and to improve the crack resistance, the low carbon alloy system should be adopted to reduce the content of sulfur and phosphorus in the weld metal.
Q345 is a kind of low alloy high strength structural steel with yield point 345MPa. It is recommended to use J507 welding rod.
J507 electrode is recommended in Engineering
The use of low alloy steel electrode welding hot rolling and normalizing steel, is the main basis for the guarantee of weld metal strength, plasticity and impact toughness and other mechanical properties of base metal and matching of welding thick component, in order to prevent welding crack, can adopt "undermatched" principle, namely the selection of weld metal strength is lower than base metal electrode. When welding low carbon quenched and tempered steel, the hydrogen should be strictly controlled, so the low hydrogen or ultra low hydrogen electrode should be used. In order to ensure the plasticity, toughness and strength of weld metal, and to improve the crack resistance, the low carbon alloy system should be adopted to reduce the content of sulfur and phosphorus in the weld metal.You can use J503, J502, J507, J506, J507GR, J507RH brand welding rod for welding.
