通过分析l 245钢埋弧焊焊缝区质量、微观组织和拉伸性能关系表明，焊接工艺参数的合理制定是低合金钢l 245焊管产生裂纹等缺陷的关键因素。
By analyzing the relation of microstructure, weld zone quality and tensile property, it is concluded that the welding technological parameter of L245 steel is the main factor of the welding crack.
结果表明炉出口温度是最关键因子，为工艺员制定工艺参数提供了依据。
The results showed that temperature of the exit of the distillation furnace is the most key factor. This study has provided references for technicians to select technology parameters.
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