[1]梁才萌,裴银柱,张坤鹏,等.X70M高频焊管胀环试验性能研究[J].焊管,2017,40(9):16-20.[doi:10.19291/j.cnki.1001-3938.2017.09.004]
　LIANG Caimeng,PEI Yinzhu,ZHANG Kunpeng,et al.Study on Test Performance of X70M High-frequency Welded Pipe Expansion Ring[J].,2017,40(9):16-20.[doi:10.19291/j.cnki.1001-3938.2017.09.004]
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X70M高频焊管胀环试验性能研究()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
40
期数:
2017年第9期
页码:
16-20
栏目:
试验与研究
出版日期:
2017-09-28

文章信息/Info

Title:
Study on Test Performance of
X70M High-frequency Welded Pipe Expansion Ring
文章编号:
10.19291/j.cnki.1001-3938.2017.09.004
作者:
梁才萌; 裴银柱; 张坤鹏; 张荣胜; 李文平
 番禺珠江钢管（连云港）有限公司， 江苏 连云港 222006
Author(s):
LIANG Caimeng;  PEI Yinzhu;  ZHANG Kunpeng;  ZHANG Rongsheng;  LI Wenping
 Panyu Chu Kong Steel Pipe(lianyungang) Co., Ltd., Lianyungang 222006, Jiangsu, China
关键词:
焊管; 高频焊管; 屈服强度; 胀环试验; 环形试样; 板状拉伸
Keywords:
welded pipe; high-frequency welded pipe; yield strength expansion ring test; ring-shaped specimen; plate tensile
分类号:
TG407
DOI:
10.19291/j.cnki.1001-3938.2017.09.004
文献标志码:
B
摘要:
为了准确测量钢管的屈服强度，以Φ323.9 mm×6.4 mm、材质为X70M的高频焊管为例，对钢管防腐前后的板状试样和环形试样分别进行了拉伸试验和胀环试验，并分析对比了试验结果。结果表明，板状试样相对于环形试样的屈服强度出现了较大的波动，其原因是板状拉伸试验在试样展平过程中发生了包申格效应和加工硬化。防腐后钢管的胀环试验结果明显高于防腐前，其原因是防腐涂敷过程中钢管经受时效热处理产生了时效强化作用。另外因焊缝与管体的组织不同，造成胀环试验后两者的变形量明显不同，因此使用胀环试验测量管体的屈服强度不够合理。
Abstract:
In order to accurately detect the yield strength of steel pipe，taking X70M Φ323.9 mm×6.4 mm high-frequency welded pipe as an example，the tensile test and expansion ring test on plate specimen and ring-shaped specimen were conducted respectively before and after anticorrosion of steel pipe，and the test results were analyzed and compared. The results showed that relative to the ring-shaped sample, the yield strength of the plate specimen appeared great fluctuation，and the reason was that the Bauschinger effect and work hardening occurred in plate tensile specimen flattening process. The expansion ring test result after anticorrosion was obviously higher than that of before anticorrosion, the reason was that during steel pipe coating process, the aging reinforcement effect occurrence caused by aging heat treatment. In addition, because the microstructure of weld and pipe body was different, the deformation amount of weld and pipe body was significantly different after expansion ring test. Therefore，using expansion ring test to measure the yield strength of pipe body obviously was not reasonable.

参考文献/References:

[1] API SPEC 5L：2012，Specification for Line Pipe[S].
[2] GB/T 9711—2011，石油天然气工业管线输送系统用钢管[S].
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[11] ASTM A370—2016, Standard Test Methods and D

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备注/Memo

备注/Memo:
收稿日期：2017-03-31
作者简介：梁才萌（1987—），男，广西贵港人，本科，目前主要从事石油天然气输送管线钢管及防腐涂层的理化检测工作。
更新日期/Last Update: 2017-12-11