A welding method for improving resistance to cold cracking

摘要

A weld obtainable by welding steel, wherein said weld comprises a weld metal consisting essentially of, in mass %, the remainder of the weld metal consisting essentially of Fe and unavoidable impurities, said impurities comprising. wherein the value of Pcm of the weld metal expressed by the following Equation (3) (in which the symbol of each element appearing in the equation indicates the content of the element in mass %) is in the range of from 0.23% to 0.35%, and the time T until the weld metal is cooled to 100 DEG C after welding satisfies the following Equation (1): T (seconds) ≥ exp (7.0 x Pw + 4.66) where Pw = Pcm + HD/60 Pcm (mass%) = C + Si/30 + Mn/20 + Cu/20 + Ni/60 + Cr/20 + Mo/15 + V/10 + 5B HD Äml/100 gÜ:   amount of hydrogen in the weld metal immediately after welding.