转炉生产P110级高抗挤毁石油套管钢26CrMo4的实践

Production Practice of P110 Graded High Anti-collapse Oil Casing Steel 26CrMo4 at Converter

为满足客户关于P110级石油套管钢的化学成分和力学性能要求,天钢炼钢厂利用现有的"BOF-LF-VD-CC"生产工艺,开发生产了26CrMo4钢圆管坯,成品铸坯的化学成分、低倍组织和表面质量等完全能够满足用户的要求。介绍了天钢炼钢厂在生产工艺确定、各工序工艺重点的控制、实际工艺控制情况和铸坯实物质量情况等方面生产该石油套管用圆管坯的实践与质量控制措施。

In order to meet the requirement of chemical composition and mechanical property of P110 graded anti-collapse oil casing steel 26CrMo4 by the customer, TISCO Steel-making Subsidiary utilized BOF-LF-VD-CC process to develop and produce round billet for pipe, the chemical composition, microstructure and surface quality of which all meet the customer's needs. The paper introduces the practice and quality control measures for this round billet in process decision, crucial procedure control over the entire process, actual process control and actual billet quality.