| 摘要 |
<p>This invention relates to a bare electrode for welding of low temperature steel. More particularly, the invention relates to a welding bare electrode of a diameter of at least 3.0 mm for use in a large current gas shielded arc welding process in which steel for low temperature use is welded by a welding current of at least 500 A in a shielding gas composed mainly of an inert gas such as Ar, He or the like, said electrode comprising up to 0.12 % C, up to 0.8 % Si, up to 3.0 % Mn, up to 0.25 % Ti and at least one member selected from the group consisting of up to 4.0% Ni, up to 0.8 % Cr and up to 1.0 % Mo and the carbon equivalent (Ceq), represented by the following formula, of said electrode being up to 0.60 %: Ceq = C + 1/6Mn + 1/24Si + 1/40Ni + 1/5Cr + 1/4 Mo wherein each element denotes the content, % by weight, of the element.</p> |
