[1]孙 宏,宗秋丽,郑青昊 编译.双面单道埋弧焊管线钢管的力学性能评价与统计相关性研究[J].焊管,2020,43(5):51-58,62.[doi:10.19291/j.cnki.1001-3938.2020.05.010]
 Translated by SUN Hong,ZONG Qiuli,ZHENG Qinghao.Research on Mechanical Properties Assessment and Statistical Correlation of Double Sided Single Pass Submerged Arc Welded Line Pipe Steel[J].,2020,43(5):51-58,62.[doi:10.19291/j.cnki.1001-3938.2020.05.010]
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双面单道埋弧焊管线钢管的
力学性能评价与统计相关性研究
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
43
期数:
2020年第5期
页码:
51-58,62
栏目:
国外焊管
出版日期:
2020-05-28

文章信息/Info

Title:
Research on Mechanical Properties Assessment and Statistical Correlation of
Double Sided Single Pass Submerged Arc Welded Line Pipe Steel
文章编号:
10.19291/j.cnki.1001-3938.2020.05.010
作者:
孙 宏宗秋丽郑青昊 编译
渤海石油装备华油钢管公司,河北 青县 062658
Author(s):
Translated by SUN Hong ZONG Qiuli ZHENG Qinghao
North China Petroleum Steel Pipe Company of Bohai Equipment Manufacturing Co., Ltd., Qingxian 062658, Hebei, China
关键词:
埋弧焊管焊接工艺力学性能统计分析回归
Keywords:
submerged arc welded pipe welding process mechanical properties statistical analysis regression
分类号:
TG142
DOI:
10.19291/j.cnki.1001-3938.2020.05.010
文献标志码:
A
摘要:
为了评价 X70埋弧焊管线钢管的力学性能,对焊接接头和母材的强度、塑性、硬度、韧性以及可焊性进行了评价。结果表明,焊缝熔合区沉淀相的显微组织主要由晶内针状铁素体和晶界块状铁素体组成,其硬度最高而冲击韧性最低;焊接接头的抗拉强度高于母材的抗拉强度。使用相关性和一元线性回归方法对试验数据进行了统计分析,分析结果表明,屈服强度可以有效用于估算母材的抗拉强度和屈强比,决定系数R2分别约为80%和65%。另外,还可以采用母材的抗拉强度以大约60%的决定系数R2来预测焊接接头的抗拉强度,预测值与试验数据高度吻合,所提出的模型可以在实践中便捷使用。
Abstract:
In order to evaluate the mechanical properties of X70 submerged arc welded pipe, the strength, plasticity, hardness, toughness and weldability of the welded joint and the base metal were evaluated. The results show that the microstructure of the precipitated phase in the fusion zone is mainly composed of intragranular acicular ferrite and grain boundary massive ferrite, with the highest hardness and the lowest impact toughness; the tensile strength of the welded joint is higher than that of the base metal. The results show that the yield strength can be effectively used to estimate the tensile strength and yield strength ratio of the base metal, and the determination factors R2 are about 80% and 65%, respectively. In addition, the tensile strength of the base metal can also be used to predict the tensile strength of the welded joint with about 60% determination coefficient. The predicted value is highly consistent with the test data and the proposed model can be easily used in practice.

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备注/Memo

备注/Memo:
收稿日期:2019-11-19
译者简介:孙 宏(1974—),男,高级工程师,工程硕士,从事石油输送钢管材料与研究工作。
更新日期/Last Update: 2020-06-30