| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a coated electrode which is used for welding a low alloy steel by arc welding, has excellent resistance to sulfuric acid and hydrochloric acid, can yield a weld metal having excellent resistance to sulfuric acid and hydrochloric acid, and can keep satisfactory weldability. <P>SOLUTION: The coated electrode is obtained by coating coating material on a steel core wire and exhibits excellent resistance to sulfuric acid and hydrochloric acid. The coated electrode contains, by mass% of the total mass of electrode, 0.005 to 0.15 % C, 0.5 to 4 % Si, 0.2 to 2.4 % Mn, 0.1 to 1.2 % Cu, 0.1 to 0.6 % Ni, 0.02 to 0.25 % Sb, ≤0.03% P, ≤0.03% S and the balance Fe and inevitable impurities in either one of the steel core wire or the coating flux or both of those. <P>COPYRIGHT: (C)2004,JPO |
