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介绍对ZG20SiMn厚板用不同的高热输入量CO_2 气体保护焊施焊,试验对比其焊缝和HAZ的组织、接头的常规力学性能和疲劳断裂性,说明了试验结果.
Introduction ZG20SiMn thick plate with different high heat input CO_2 gas shielded welding, compared with the test weld and HAZ organization, joint conventional mechanical properties and fatigue fracture, indicating the test results.