PQF连轧管机的厚壁超短管轧制工艺技术开发  

Development of Technology of PQF Process for Rolling Heavy-wall,Extra-short Tube

作　　者：孙世忠[1] 管学聪[1] 丁宏钧[1] 马绍辉[1] 

机构地区：[1]天津钢管集团股份有限公司,天津300301

出　　处：《钢管》2016年第4期42-45,共4页Steel Pipe

摘　　要：通过优化PQF连轧管工艺,解决了厚壁超短管轧制时存在的问题,重点介绍了制约生产的关键要素——芯棒限动速度和脱管机轧制速度优化匹配的问题,提出了电气控制增加限动齿条返回延时的措施,实现了脱管机轧制过程扭矩平稳,满足连轧区域的自动化生产。通过现场生产,钢管几何尺寸精度满足标准要求,产品成材率达到机组设计水平。The problems staying with the PQF process in case of rolling the heavy-wall, extra-short tube are solved by means of optimizing the process itself. Described as the focus is the key element restraining the production, i.e., optimally matching the retained mandrel speed with the extractor rolling speed. A measure as taken is to increase the retained rack return time delay via the electric control system so as to ensure consistent torque of the extractor during the rolling process, which is in line with automatic operation of the entire rolling area. The actual site operation result shows that the steel tube geometric dimension accuracies are up to applicable specification, and the metal yield is also up to the designed target of the mill line.

关 键 词：PQF连轧管机 厚壁超短管 芯棒限动速度 脱管机扭矩 

分 类 号：TG333.8[金属学及工艺—金属压力加工]