连铸圆管坯在Φ400mm自动轧管过程中组织与性能的变化及最小压缩比的确定
CHANGE OF STRUCTURE AND PROPERTIES OF CC ROUND BEING ROLLED WITH Φ400mm PLUG PIPE MILL AND DETERMINATION OF MMIMUM COMPRESSION RATIO
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摘要: 研究了20Mn3钢连铸圆管坯在轧管过程中组织与性能的演变过程。研究表明,最小压缩比(延伸系数)可定为4。Abstract: Investigation on the evolution of the structure and properties of the 20Mn3 steel CC round being rolled with pipe mill is made. The result shows that the minimum compression ratio（elongation factor）is 4 as determined.
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