20G和12Cr1MoVG无缝钢管低温形变退火研究
Study on Low-temperature Thermo-mechanical Annealing Treatment of 20G and 12Cr1MoVG Seamless Steel Tubes
徐小华1, 陈俊德2, 肖学山1, 薛刚毅2
点击：3221次 下载：0次
作者单位：1. 上海大学 材料研究所, 上海 200072; 2. 无锡德新钢管有限公司, 江苏 无锡 214177
中文关键字：20G； 12Cr1MoVG； 无缝钢管； 低温形变退火； 热扩钢管
英文关键字：20G; 12Cr1MoVG; seamless steel tube; low-temperature thermo-mechanical annealing treatment; hot-expanded steel tube
中文摘要：研究了低温形变退火生产的20G、12Cr1MoVG热扩无缝钢管的显微组织、晶粒度、非金属夹杂物和室温力学性能，参考GB5310-2008对试验结果进行了评价，并与原管和热扩后经后续热处理的钢管比较。结果表明，低温形变退火生产的20G、12Cr1MoVG热扩无缝钢管和经后续热处理钢管的显微组织、晶粒度、非金属夹杂物和室温力学性能，均符合GB5310-2008对20G、12Cr1MoVG的要求。这为进一步推广生产流程简单、质量稳定、经济实用的热扩工艺奠定重要基础。
英文摘要：The microstructure, grain size, non-metallic inclusion and room-temperature mechanical properties of 20G and 12Cr1MoVG hot-expanded steel tubes after low-temperature thermo-mechanical annealing treatment were investigated, which were compared with crude seamless steel tubes and the tubes with heat treatment later. The results indicate that the microstructure, grain size, non-metallic inclusion and room-temperature mechanical properties of 20G and 12Cr1MoVG hot-expanded steel tubes and the tubes with heat treatment later, fully meet the needs of GB5310-2008 to 20G and 12Cr1MoVG. It is important to popularize the simplified production flow, steady quality, economical and practical hot-expanding process.