感应热处理工艺在X70钢级HFW焊管生产中的应用  

Application of Induction Heat Treatment in Production of X70 HFW Pipe

作　　者：宋志强 SONG Zhiqiang(CNOOC（Tianjin）Pipeline Engineering Technology Co.,Ltd.,Tianjin 300452,Chin)

机构地区：[1]中海油(天津)管道工程技术有限公司,天津300452

出　　处：《焊管》2018年第7期48-52,共5页Welded Pipe and Tube

摘　　要：为了优化HFW焊管的感应热处理工艺,进一步提高焊管质量,针对焊管感应加热热处理的应用优势和HFW焊管制管原理及工艺,分析了HFW焊管采用中频正火热处理的工作原理、工艺和作用。以规格为Φ323.9 mm×14.3 mm、钢级为X70的HFW焊管焊缝采用在线中频正火热处理工艺为例,通过试验得出了热处理加热温度在930℃、传送速度12 m/min、经96 m空冷加喷淋冷却后,焊管能够获得良好的焊缝金相组织和综合力学性能。In order to optimize the induction heat treatment process and quality of the HFW welded pipe,the working principle,process and function as the intermediate frequency normalizing heat treatment of the HFW welded pipe were analyzed in light of the application advantages of the induction heat treatment of the HFW welded pipe and the principle and technology of the pipe making. Taking the steel grade X70 and the specification Φ323.9 mm×14.3 mm HFW welded pipe as an example,the weld was treated with an online intermediate frequency normalizing heat treatment,the heating temperature of930 ℃,the conveying speed of 12 m/min,and after air-cooling 96 m and spray-cooling,the welded pipe can get a good weld metallurgical structure and comprehensive mechanical properties.

关 键 词：焊管 X70 HFW 热处理 中频正火 焊缝质量 

分 类 号：TG162.84[金属学及工艺—热处理]