[1]吴金辉,赵建新2,李富强,等.板厚与取样位置对螺旋焊管母材拉伸性能的影响[J].焊管,2010,33(6):20-22.[doi:1001-3938(2010)05-0020-03]
 WU Jin-hui,ZHAO Jian-xin,LI Fu-qiang,et al.Effect of Plate Thickness and Sampling Location on Tensile Properties for the Pipe Body of Spiral Welding Steel Pipe[J].,2010,33(6):20-22.[doi:1001-3938(2010)05-0020-03]
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板厚与取样位置对螺旋焊管母材拉伸性能的影响
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
33
期数:
2010年第6期
页码:
20-22
栏目:
试验与研究
出版日期:
2010-06-28

文章信息/Info

Title:
Effect of Plate Thickness and Sampling Location on Tensile Properties for the Pipe Body of Spiral Welding Steel Pipe
文章编号:
1001-3938(2010)05-0020-03
作者:
吴金辉1赵建新李富强1王卓力1王高峰1张鸿博1
(1.中国石油天然气集团公司管材研究所,西安 710065;2.中国石油物资公司,北京 100029)
Author(s):
WU Jin-hui1ZHAO Jian-xin2LI Fu-qiang1WANG Zhuo-li1WANG Gao-feng1ZHANG Hong-bo1
(1.Tubular Goods Research Center of CNPC,Xi’an 710065,China;2.China Petroleum Materials Corporation, Beijing 100029,China)
关键词:
L450MB拉伸性能包申格效应热机械控轧工艺
Keywords:
L450MBtensile propertythe Bauschinger effectTMCP
分类号:
TG142.1
DOI:
1001-3938(2010)05-0020-03
文献标志码:
A
摘要:
分析了某制管厂在采用L450MB卷板生产φ813mm×12.5mm和φ813mm×11.0mm规格钢管过程中,由于板厚和钢管母材取样位置不同而造成母材拉伸性能较原材料的变化情况,分析指出,由于材料受包申格效应的影响较大,管体母材的屈服强度相比原材料卷板下降了50~60MPa,抗拉强度下降大约10MPa,屈强比也有明显降低;壁厚较大的卷板在制成钢管的过程中,屈服强度和屈强比的下降值比壁厚较小的卷板有所减小;管体母材拉伸试验的取样位置在距螺旋焊缝a/2处时,其拉伸性能相对于在距螺旋焊缝a/4处取样时有所降低。
Abstract:
While adopting L450MB rolled coils to process SAWH pipe,being affected by the Bauschinger effect,yield strength of pipe body reduces  50~60MPa compared to that of raw material,and the tensile strength reduces about 10MPa,so yield ratio  reduces obviously.The Bauschinger effect of rolled coils with 12.5mm thickness is small,and the reduction values of yield strength and yield ratio are smaller.During the thermo-mechanical control process(TMCP),becase of the smaller grain size of ingot edge,the rolled coils edge grain is also smaller and thus a higher strength.While the ingot center due to the segregation of impurity concentration and greater grain size,the strength of the middle part of rolled coils is lower.The properties difference along the width of rolled coils causes tensile property weaker away from weld a/2 distance than that of weld a/4 distance.

参考文献/References:

[1]李延丰.管线钢管的包辛格效应与质量[J].焊管,2000,23(1):1-3.
[2]胡正寰,夏巨谌.中国材料工程大典[M].北京:化学工业出版社,2005.
[3]API  SPEC 5L(第44版),管线钢管规范[S].

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备注/Memo

备注/Memo:
作者简介:吴金辉(1983-),男,福建人,主要从事油气输送管材料及焊接研究工作。
收稿日期:2009-11-18
更新日期/Last Update: