[1]靳海成,张金喜,王国兵,等.基于应变设计的X70钢管软化及脆化研究[J].焊管,2017,40(9):11-15.[doi:10.19291/j.cnki.1001-3938.2017.09.003]
 JIN Haicheng,ZHANG Jinxi,WANG Guobing,et al.Study on the Softening and Embrittlement of Strain-based Design X70 Steel Pipe[J].,2017,40(9):11-15.[doi:10.19291/j.cnki.1001-3938.2017.09.003]
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基于应变设计的X70钢管软化及脆化研究()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
40
期数:
2017年第9期
页码:
11-15
栏目:
试验与研究
出版日期:
2017-09-28

文章信息/Info

Title:
Study on the Softening and Embrittlement of Strain-based Design X70 Steel Pipe
文章编号:
10.19291/j.cnki.1001-3938.2017.09.003
作者:
靳海成1张金喜2王国兵3冯大勇1
1. 中国石油天然气管道科学研究院有限公司, 河北 廊坊 065000;
2. 中国石油管道局工程有限公司国际事业部, 河北 廊坊 065000;
3. 中国石油管道局工程有限公司第五分公司, 河北 廊坊 065000
Author(s):
JIN Haicheng 1 ZHANG Jinxi 2 WANG Guobing 3 FENG Dayong 1
1. China Petroleum and Natural Gas Pipeline Science Research Institute Co., Ltd., Langfang 065000, Hebei,China;
2. International Business Division of China Petroleum Pipeline Bureau Engineering Co., Ltd., Langfang 065000,Hebei,China;
3. No. 5 Branch Company of China Petroleum Pipeline Bureau Engineering Co., Ltd., Langfang 065000,Hebei,China
关键词:
焊接X70钢管基于应变设计大变形钢焊缝软化脆化
Keywords:
welding X70 steel pipe strain-based designlarge deformation steel weld softening embrittlement
分类号:
TG407
DOI:
10.19291/j.cnki.1001-3938.2017.09.003
文献标志码:
A
摘要:
为了研究基于应变设计的X70钢管在焊接热循环作用下热影响区软化和脆化现象,采用焊接热模拟试验、系列温度冲击试验及硬度检测等方法,分析了焊接接头热影响区组织形成、低温冲击韧性和软化程度大小的影响因素。研究结果表明,X70大变形钢焊接热影响区的脆化现象不明显,但存在不同程度的软化现象,填充层硬度最大降低10%,盖面层硬度最大降低11.6%。通过对焊缝的补强覆盖焊接增大了焊缝余高的宽度和高度,解决了焊缝热影响区的软化的问题。
Abstract:
In order to find the reason of softening and embrittlement of strain-based design X70 steel pipe, using the methods of welding thermal simulation test, series temperature impact test, hardness measurement and so on, it analyzed the heat affected zone microstructure formation of welded joint, low temperature impact toughness and the influence factors of softening degree. The research results indicated that the embrittlement of the thermal influence zone of X70 large deformation steel welding heat affected zone was not obvious, but existed different degrees softening phenomenon, the hardness of the filling layer was reduced by 10%, and the hardness of the cover layer decreased by 11.6%. The width and height of welds were increased by the welding of weld reinforcement, which solved the softening problem of weld heat affected area.

参考文献/References:

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备注/Memo

备注/Memo:

收稿日期: 2017-05-04

作者简介: 靳海成(1977—),男,高级工程师,主要从事长输管道与储罐工程焊接技术研究、焊接工艺及设备评价、材料性能测试工作。

更新日期/Last Update: 2017-12-11