经济型中厚壁ZT640地质钻探用无缝钢管生产实践  

Practice of Production Technology for ZT640 Economical Heavy/medium-walled Seamless Steel Tube for Geological Drilling Service

作　　者：王善宝 吴红 赵波 袁琴 解德刚 李哲[2] 王施文[2] 张尧[2] WANG Shanbao;WU Hong;ZHAO Bo;YUAN Qin;XIE Degang;LI Zhe;WANG Shiwen;ZHANG Yao(Iron&Steel Institute,Ansteel Group,Anshan 114009,China;Ansteel Co.,Ltd.,Anshan 114009,China)

机构地区：[1]鞍钢集团钢铁研究院,辽宁鞍山114009 [2]鞍钢股份有限公司,辽宁鞍山114009

出　　处：《钢管》2020年第3期42-46,共5页Steel Pipe

摘　　要：用37Mn5钢生产经济型中厚壁ZT640地质钻探用无缝钢管。介绍ZT640无缝钢管的生产工艺、关键控制技术和质量情况,以及37Mn5中厚壁无缝钢管淬火裂纹的控制措施。分析认为:通过“转炉炼钢+LF精炼+方坯连铸+轧制圆坯+连轧+调质”工艺生产的中厚壁地质钻探用ZT640调质无缝钢管,其各项性能指标和尺寸精度等完全满足技术要求,说明生产工艺可行;用37Mn5钢代替35CrMo钢种,可实现经济型生产的目的。Described here in the paper is how to use the 37Mn5 steel to produce the ZT640 economical heavy/mediumwalled seamless steel tube for geological drilling service,involving the manufacturing process,the key control techniques and the quality status,and the control measures as taken to prevent the quench-caused crack of the 37Mn5 heavy/medium-walled seamless steel tube.It is regarded via the analysis that the ZT640 quench and tempered heavy/mediumwalled seamless steel tube for geological drilling service as produced by means of the process of"Converter+LF+Square CC+Round rolling+PQF pipe-rolling+Quenching&tempering"has all of its technical indexes and dimensional tolerances fully conform to applicable technical requirements,which means that the manufacturing process as employed is quite practical.And it is finally concluded that substituting the 37Mn5 steel for the 35CrMo steel is able to bring about the economical production of the said product.

关 键 词：无缝钢管 地质钻探 厚壁 热处理 淬火裂纹 内直道 

分 类 号：TG335.71[金属学及工艺—金属压力加工]