[1]顾亚光,张荣胜.X70 级HFW焊管在线中频感应热处理工艺研究[J].焊管,2017,40(4):53-56.[doi:10.19291/j.cnki.1001-3938.2017.04.011]
 GU Yaguang,ZHANG Rongsheng,X70 Grade HFW Pipe On-line Mid-frequency Induction Heat Treatment Process Research[J].,2017,40(4):53-56.[doi:10.19291/j.cnki.1001-3938.2017.04.011]
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X70 级HFW焊管在线中频感应热处理工艺研究
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
40
期数:
2017年第4期
页码:
53-56
栏目:
工艺与设备
出版日期:
2017-04-28

文章信息/Info

Title:
X70 Grade HFW Pipe On-line Mid-frequency Induction Heat
Treatment Process Research
文章编号:
10.19291/j.cnki.1001-3938.2017.04.011
作者:
顾亚光1张荣胜1 2
1. 番禺珠江钢管(连云港)有限公司, 江苏 连云港 222066;
?2. 连云港市高性能能源管材重点实验室, 江苏 连云港 222066
Author(s):
GU Yaguang1 ZHANG Rongsheng1 2
1. Panyu Chu kong(Lianyungang)Steel Pipe Co., Ltd., Lianyungang 222066, Jiangsu, China;
2. Lianyungang high-performance Energy Tubular Goods key laboratory, Lianyungang 222066, Jiangsu, China
关键词:
X70HFW焊管在线热处理组织力学性能
Keywords:
X70 steel grade? HFW pipe on-line heat treatment microstructure mechanical property
分类号:
TG162.84
DOI:
10.19291/j.cnki.1001-3938.2017.04.011
文献标志码:
A
摘要:
为了探究X70 级HFW焊管在线中频感应热处理工艺,通过采用不同的焊后在线正火热处理工艺方案进行了试验研究,比对了X70级 HFW焊管热处理后组织与性能的变化情况。试验结果显示,中频感应加热正火温度和加热保温时间对焊接区的金相组织和性能有显著影响;910 ℃保温17 s、950 ℃不保温正火后,焊接区有硬质相组织,焊缝抗拉强度高,但塑性韧性低;980 ℃正火后,金相组织粗大,焊缝抗拉强度降低;950 ℃保温17 s正火后,金相组织为均匀细小的F+P,焊缝塑性韧性提高。试验结果表明,采用950 ℃正火,在此温度下适当的延长正火保温时间,能够获得良好的金相组织和综合力学性能。
Abstract:
In order to explore on-line mid-frequency induction heat treatment process of X70 HFW pipe, in this article, it conducted tests through adopting different online normalizing heat treatment process after welding, and compared the microstructure and properties change of X70 HFW pipe after heat treatment. The results showed that the normalizing temperature and heat preservation obviously affect the metallographic structure and properties of welding zone. After heat preservation for 17 s at 910 ℃ or normalizing at 950 ℃ without heat preservation, the hard phase microstructure appeared in welding area, the tensile strength of weld was high, and the plasticity and toughness were low. After normalizing at 980 ℃,the metallographic structure became coarse, and the tensile strength of weld decreased. After normalizing with heat preservation for 17 s at 950 ℃,the metallographic structure composed of even and fine F+P, and the plasticity and toughness of weld increased. The test results indicated that normalizing at 950 ℃ with suitably prolonged heat preservation duration will achieve good metallographic structure and comprehensive mechanical properties.

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备注/Memo

备注/Memo:
收稿日期: 2017-01-19
作者介绍: 顾亚光(1985—), 男, 工艺员, 主要从事焊管技术管理工作。
更新日期/Last Update: