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前言GC-11钢是一种低碳低合金高强度贝氏体型钢,可代替航空工厂常用的30CrMnSiA钢。GC-11钢由于碳的含量低,焊接时不易产生裂纹,一般可以不预热进行焊接;冷冲压成型良好;热处理工艺简单,经正火及回火处理后能得到与30CrMnSiA 钢相当的机械性能。这种钢的焊接方法与30CrMnSiA 钢一样,可采用电弧焊、CO_2焊(组丝 CO_2气体保护电弧焊)、氢原子焊、氩弧焊等焊接工艺。在焊接
Foreword GC-11 steel is a low-carbon, low-alloy, high-strength bainitic steel that can replace commonly used 30CrMnSiA steels in aviation plants. GC-11 steel due to the low carbon content, the welding is not easy to crack, the general can not preheat welding; cold stamping well; heat treatment process is simple, normalizing and tempering can get 30CrMnSiA steel mechanical properties . This steel welding method and 30CrMnSiA steel, can be used arc welding, CO_2 welding (group wire CO_2 gas shielded arc welding), hydrogen atom welding, welding and other welding processes. In welding