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通过对30CrMoA厚板MIG焊接接头的上、中、下三层分别取样进行拉伸、弯曲、冲击等综合力学性能检测及各区的金相组织分析,探讨了30CrMoA钢厚板焊接结构造成各层性能差异的原因及工艺控制方法。
The comprehensive mechanical properties such as tensile, bending and impact of the upper, middle and lower strata of 30CrMoA thick-wall MIG welded joint were sampled and the microstructure analysis of each zone was conducted. The effects of welded structures of 30CrMoA steel plate on the properties of each layer The reason for the difference and the method of process control.