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通过在无砟轨道试验段做的K922移动接触焊机焊接试验,分析钢轨焊接接头的金相组织与物理性能,研究U75V钢轨焊接接头的质量。
Through the welding test of K922 mobile contact welding machine made in the ballastless track test section, the microstructure and physical properties of the rail welded joints were analyzed to study the quality of welded joint of U75V rail.