COATED ELECTRODE FOR LOW HYDROGEN TYPE FILLET WELDING

摘要

PROBLEM TO BE SOLVED: To provide a coated electrode for low hydrogen type fillet welding being excellent in welding workability such as a low fume generation rate and the like while ensuring excellent pit resistance, capable of obtaining excellent mechanical property of a weld metal and having good productivity.;SOLUTION: In a coated electrode for low hydrogen type fillet welding,: in mass% to the total mass of a coating agent, the total amount of metal carbonates is 5-15%; the total amount of metal fluorides is 3-8%; NaF in the metal fluorides is 0.2-1.5%; the total amount of TiO₂ conversion values is 5-15%; the total amount of SiO₂ conversion values is 10-20%; the total amount of Al₂O₃ conversion values is 0.5-3.0%; the total amount of FeO conversion values is 0.5-1.5%; MgO is 2-6%; Si is 0.5-2.0%; Mn is 5-8%; Ni is 0.3-2.0%; iron powders are 25-45%; and the total amount of Na₂O conversion values and K₂O conversion values is 1.5-5.5%.;SELECTED DRAWING: None;COPYRIGHT: (C)2018,JPO&INPIT