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ＱＪ６０钢属于低合金高强钢 ,这类钢焊接性的主要特点是在热影响区粗晶区有产生冷裂纹和韧性下降的倾向。ＱＪ６０钢的抗拉强度为６８０ＭＰａ ,焊条熔敷金属性能应满足结构设计要求 ,按等强度原则选择焊条 ,选用了抗拉强度为６８０ＭＰａ的Ｆ６０１５ -Ｇ高韧性超低氢焊条 ,?
QJ60 steel is a low-alloy high-strength steel, the main feature of this type of steel weldability is the cold zone in the heat-affected zone have a tendency to cold cracking and ductility decline. QJ60 steel tensile strength of 680MPa, weld deposited metal properties should meet the structural design requirements, according to the principle of equal strength selection of electrodes, the choice of a tensile strength of 680MPa F6015-G high toughness ultra-low hydrogen electrode,?