There are several welding electrodes in manual arc welding
1) E4303:E means welding rod, 43 means the tensile strength of deposited metal 430MPa, 0 indicates that the electrode is suitable for metal position welding, and 03 represents welding current type for AC or DC zone reverse, and the coating is titanium(2) E5015 E means welding rod, 50 means the tensile strength of deposited metal 500MPa, and 1 indicates that the electrode is suitable for all position welding. 15 indicates that the electrode is low hydrogen and sodium type, and the direct current is reverse.(3) J422 J indicates that the electrode is the structural steel welding rod, and the 42 represents the tensile strength of the weld metal 420MPa, and 2 indicates that the electrode is made of titanium calcium based leather and is AC and DC positive and negative(4) J507 J indicates that the electrode is a structural steel electrode, and 50 represents the tensile strength of the weld metal 500MPa, and 7 indicates that the electrode is of low hydrogen and sodium type and has a direct reverse connection.
There are several kinds of welding electrodes for manual arc welding:1, E4303:E means welding rod, 43 means the tensile strength of deposited metal 430MPa, 0, indicating that welding electrode is suitable for metal position welding, 03 means welding current type for AC or DC zone reverse, and the coating is titanium2, E5015, E means welding rod, 50 means the tensile strength of deposited metal 500MPa, 1, indicating that welding electrode applies to all position welding, 15 means that the electrode is low hydrogen sodium type leather, DC reverse.3, J422, J said electrode for structural steel welding rod, 42, said weld metal tensile strength 420MPa, 2, said electrode for titanium calcium type leather, AC and DC positive and negative connection4, J507 and J indicate that the electrode is the structural steel welding rod, and the 50 represents the tensile strength of the weld metal 500MPa, and 7 indicates that the electrode is low hydrogen and sodium type and the skin is directly connected with the reverse.
There are many kinds of dry sticks, and they are still being developed.502506422 are structural steel dry bar, with J for structural steel, the first two are tensile strength, and the latter is characteristic. There are national standards in this regard.
