[1]苏洪英,林 利,吕 冬,等.管线钢热轧卷板屈服强度的试验研究[J].焊管,2016,39(3):37-41,45.[doi:10.19291/j.cnki.1001-3938.2016.03.008]
 SU Hongying,LIN Li,LV Dong,et al.Experimental Study on Yield Strength of Pipelines Steel Hot-rolled Coil[J].,2016,39(3):37-41,45.[doi:10.19291/j.cnki.1001-3938.2016.03.008]
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管线钢热轧卷板屈服强度的试验研究
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
39
期数:
2016年第3期
页码:
37-41,45
栏目:
应用与开发
出版日期:
2016-03-28

文章信息/Info

Title:
Experimental Study on Yield Strength of Pipelines Steel Hot-rolled Coil
文章编号:
10.19291/j.cnki.1001-3938.2016.03.007
作者:
苏洪英林 利吕 冬陆晓锋魏世同李萧彤张 南
鞍山钢铁集团公司技术中心,辽宁 鞍山 114009
Author(s):
SU Hongying LIN Li LV Dong LU Xiaofeng WEI Shitong LI Xiaotong ZHANG Nan
Anshan Iron & Steel Group Corporation Technology Center, Anshan 114009, Liaoning, China
关键词:
管线钢屈服强度规定比例极限σP50预拉伸
Keywords:
pipeline steel yield strength specific proportional limit σP50 pre-tension
分类号:
TG142.1
DOI:
10.19291/j.cnki.1001-3938.2016.03.008
文献标志码:
B
摘要:
为了准确测定管线钢热轧卷板的屈服强度,以X90管线钢热轧卷板为例,采用规定比例极限σP50的计算方法,通过横向、30°和45°方向圆棒试样和直接拉伸矩形试样的拉伸试验、规定比例极限σP50的试验、横向矩形试样预拉伸至规定比例极限σP50的试验等,测定了屈服强度RP0.2和Rt0.5的变化情况。结果表明,预拉伸至σP50对试样力学性能的影响不大;30°和45°方向的矩形拉伸试样σP50的误差限分别为±20 MPa、±5 MPa,在此范围内的屈服强度RP0.2和Rt0.5数据分散性较小,略高于相同方向的圆棒试样,与横向矩形试样的屈服强度略高于横向圆棒试样的规律性一致。预拉伸至规定比例极限σP50能够准确计算管线钢卷板的屈服强度。
Abstract:
In order to accurately detect the yield strength of pipeline steel hot-rolled coil, taking X90 pipeline steel hot-rolled coil as an example, adopting specific proportional limit σP50 calculation method to detect yield strength RP0.2 and Rt0.5 changes through tests, including round bar specimen in transverse direction, 30°, 45° direction, direct tensile test of rectangular specimen, specific proportional limit σP50 test,  the prestretching of transverse rectangular sample to specific proportional limit σP50 and so on. The results indicated that the prestretching to σP50 slightly affect the mechanical performance. The σP50 error limits of rectangular tensile specimens in 30°, 45° direction were ± 20MPa, ± 5MPa, the data dispersion of yield strength RP0.2, Rt0.5 within this range are smaller, slightly higher than the round bar specimen in the same direction, with the same regularity as transverse rectangular specimens and transverse round specimens. Pre-tension to specific proportional limit σP50 method can accurately calculate the yield strength of pipeline steel hot-rolled coil.

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备注/Memo

备注/Memo:
收稿日期:2015-11-21
作者简介:苏洪英(1969—),女,汉族,工学士学位,高级工程师,1992年哈尔滨工业大学毕业,从事金属材料的疲劳和断裂以及材料的力学性能测试与分析。
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