感应热处理工艺在X70钢级HFW焊管生产中的应用
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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.
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.
引文
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[12]П.Е.Осипенко,杜厚益.石油钻探管在感应加热器中的热处理[J].钢管技术,1985,12(1):74-76.
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[2]林里.热处理工艺对HFW焊缝显微组织和力学性能的影响[J].焊管,2012,35(6):63-68.
[3]崔岩,聂向辉,李云龙,等.HFW焊缝组织结构对强韧性的影响[J].焊管,2011,34(11):5-9.
[4]李书黎,黄雷,冷洪刚,等.在线热处理对HFW焊管组织及力学性能影响研究[C]∥全国钢材深加工研讨会论文集.天津:中国金属学会,2014:261-264.
[5]田志凌,屈朝霞,杜则裕,等.细晶粒钢焊接热影响区晶粒长大及组织转变[J].材料科学与工艺,2000,8(3):16-20.
[6]王伟,单以银,杨柯.超低碳微合金管线钢中针状铁素体的组成对强度的影响[J].金属学报,2007,43(6):578-582.
[7]杨菊.中频感应热处理工艺在HFW660焊管机组的应用[N].世界金属导报,2011-06-28(019).
[8]宋志强,孟强.ERW感应焊管焊缝质量的影响因素分析[J].钢管,2012,41(4):37-41.
[9]介升旗,刘永平.国内ERW焊管发展现状及其质量控制[J].焊管,2006,29(6):74-78.
[10]张居勤,严雪荣.感应加热技术在钢管热处理工艺中的应用[J].钢管,2010,39(2):52-56.
[11]王三云.钢管中频感应加热热处理的优点及最新技术[J].焊管,2001,24(3):41-43.
[12]П.Е.Осипенко,杜厚益.石油钻探管在感应加热器中的热处理[J].钢管技术,1985,12(1):74-76.
[13]戴枝荣,张远明.工程材料及机械制造基础(I)[M].北京:高等教育出版社,2006:208-209.