摘要
Abstract
Addressing the prominent problems as in the conventional production process of seamless steel tube,incl-uding multi heating,high energy consumption and high carbon emission intensity,the performance control technology for the"solidification-direct piercing-online-cooling control"integrated organization is proposed and elaborated here in the article.The said technological system gets all the relevant key processes integrated,including control of the continuous casting end electromagnetic stirring vortex control,hot-chargeing and direct rolling and online TMCP(thermo-mecha-nical control process),etc.,and meanwhile abandons such operation steps like high energy consumption circular heating furnace and multiple off-line heat treatments,resulting in the CC billet to seamless steel tube mini flow and high efficiency production.Based on the high efficient utilization of all scrap steel resources,a new path of steel tube production featuring both high toughness and low emission is put forward,being worth providing low cost and high performance materials support for lightweight of such fields as the construction steel structure and commercial vehicle productions.Owing to the spreading up and application of the above mentioned integration technological system,it is expected to promote the seamless tube industry's transformation to the new industrialization mode with low-carbon emission and quality efficiency enhanced coordinately so as to provide key technical support for green and sustainable development of the steel industry.关键词
无缝钢管/短流程制造/直接穿孔轧制/在线控制冷却/组织性能控制/低碳减排Key words
seamless steel tube/mini-flow manufacture/direct piercing rolling/online cooling control/microstru-cture and property control/low carbon emission
