[1]史宏德,田青超,丁维军.N80钢级HFW套管的研发[J].焊管,2012,35(3):24-28.[doi:1001-3938(2012)03-0024-05]
 SHI Hong-de,TIAN Qing-chao,DING Wei-jun.Development of N80 Grade HFW Casing[J].,2012,35(3):24-28.[doi:1001-3938(2012)03-0024-05]
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N80钢级HFW套管的研发
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
35
期数:
2012年第3期
页码:
24-28
栏目:
会议专辑
出版日期:
2012-03-28

文章信息/Info

Title:
Development of N80 Grade HFW Casing
文章编号:
1001-3938(2012)03-0024-05
作者:
史宏德田青超丁维军
(宝山钢铁股份有限公司,上海 201900)
Author(s):
SHI Hong-de TIAN Qing-chao DING Wei-jun
(Baoshan Iron & Steel Co., Ltd, Shanghai 201900, China)
关键词:
N80HFW套管残余应力沟槽腐蚀
Keywords:
N80HFW casing residual stress grooving corrosion
分类号:
TE973
DOI:
1001-3938(2012)03-0024-05
文献标志码:
A
摘要:
研究了N80-1和N80-Q两种交货状态下HFW套管的力学性能、微观组织、残余应力以及沟槽腐蚀性能。研究发现,N80-1组织为铁素体、珠光体及少量贝氏体,N80-Q组织主要是回火索氏体,且N80-1焊缝中心有一明显沿纵向的金属流线,而N80-Q金属流线宽度变窄,而且模糊不清。通过TEM观测,N80-1焊缝附近母材区珠光体的片层结构完整清晰,而焊缝区的珠光体片短小、且杂乱无章,这种微观组织必然对应较高的残余应力。N80-1 HFW焊管宏观残余应力达到235~258 MPa,而N80-Q残余应力很小,整管热处理可以有效地消除焊管残余应力,但增加了生产成本。随着加载应力的增大,沟槽腐蚀敏感性线性增大。
Abstract:
In this article, it studied the mechanical properties, microstructure, residual stress, and grooving corrosion performance of HFW casing under N80-1 and N80-Q delivery conditions. The result indicated that the structure of N80-1 consist of ferrite, pearlite a little bainite, the structure of N80-Q is mainly tempered sorbite. A longitudinal metal flow line in N80-1 weld center was found obviously, while the width of N80-Q metal flow line is narrower and not clear. It found the lamellar structure of pearlite in pipe body nearby N80-1 weld is complete and clear, while the pearlite in weld is small and disorderly, so this kind of microstructure match along with the higher residual stress. The residual stress value of N80-1 HFW reach 235~258 MPa, while the residual stress value of N80-Q is very low, the whole pipe heat treatment can effectively eliminate welded pipe residual stress, but increase production cost. The grooving corrosion sensitivity linearity increases with loading stress increasing.

参考文献/References:

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备注/Memo

备注/Memo:
—————————
作者简介:史宏德(1954—),男,主任工程师,从事HFW焊管生产研发、工艺技术、质量控制等工作。
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