[1]赵 波,王 涛,杨玮玮,等.大壁厚焊管预热四丝埋弧焊工艺研究[J].焊管,2021,44(2):1-6.[doi:10.19291/j.cnki.1001-3938.2021.02.001]
 ZHAO Bo,WANG Tao,YANG Weiwei,et al.Research on Preheating Four-wire Submerged Arc Welding Process of Large Wall Thickness Welded Pipe[J].,2021,44(2):1-6.[doi:10.19291/j.cnki.1001-3938.2021.02.001]
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大壁厚焊管预热四丝埋弧焊工艺研究()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
第44卷
期数:
2021年第2期
页码:
1-6
栏目:
试验与研究
出版日期:
2021-02-28

文章信息/Info

Title:
Research on Preheating Four-wire Submerged Arc Welding Process of Large Wall Thickness Welded Pipe
文章编号:
10.19291/j.cnki.1001-3938.2021.02.001
作者:
赵 波王 涛杨玮玮赵与越侯树林孙 奇
1. 中国石油集团渤海石油装备制造有限公司, 河北 青县062658;
2. 中国石油技术开发公司, 北京 100009
Author(s):
ZHAO Bo WANG Tao YANG Weiwei ZHAO Yuyue HOU Shulin SUN Qi
1. CNPC Bohai Equipment Manufacturing Co., Ltd., Qingxian 062658, Hebei, China;
2. China Petroleum Technology and Development Corporation, Beijing 100009, China
关键词:
大干伸长预热焊丝低线能量多丝埋弧焊低温韧性
Keywords:
long electrical stickouts preheating wire low heat input multi-wire SAW low temperature toughness
分类号:
TG445
DOI:
10.19291/j.cnki.1001-3938.2021.02.001
文献标志码:
A
摘要:
为了提高大壁厚焊管焊速、改善多丝埋弧焊大线能量焊接导致的高钢级管线钢焊缝及热影响区组织粗化、冲击韧性降低的问题,采用焊丝熔敷速度快、焊接线能量较低的大干伸长预热四丝埋弧焊工艺进行了焊接试验研究,并与常规四丝埋弧焊工艺进行了对比。试验结果显示,大干伸长预热焊丝四丝埋弧焊工艺比常规四丝埋弧焊工艺焊接速度提高约60%,焊接线能量降低约17%;常规四丝埋弧焊工艺焊缝、热影响区-10 ℃冲击功平均值分别为163 J和350 J;预热焊丝四丝埋弧工艺焊缝、热影响区-10 ℃冲击功平均值分别为149 J和271 J,分别比常规工艺降低了14 J、79 J,但是远远优于标准要求(单值≥60 J、均值≥80 J);两种焊接工艺的焊接接头抗拉强度变化不明显。
Abstract:
In order to improve the welding speed of large wall thickness welded pipe and improve the problems of high grade pipeline steel weld and HAZ metallographic structure coarsening and impact toughness reduction caused by multi-wire submerged arc welding with large line energy. The preheating four-wire submerged arc welding process with long electrical stickouts, which has high welding speed and low welding line energy, is used for welding test research, and compared with the conventional four-wire submerged arc welding process. The results show that the welding speed of preheating four-wire submerged arc welding process with long electrical stickouts is 60% higher than that of conventional four-wire submerged arc welding process, and the welding line energy is reduced by 17%. The average impact values of weld and HAZ of conventional four-wire submerged arc welding process at -10 ℃ are 163 J and 350 J, respectively, and the average impact values of weld and HAZ of preheating four-wire submerged arc welding process at -10 ℃ are 149 J and 271 J respectively, which are decreased by 14 J and 79 J respectively, compared with the conventional welding process. But it is far better than the requirements of standard single value≥60 J and average value≥80 J. The change of tensile strength of welded joint is not obvious.

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相似文献/References:

[1]赵 波,付彦宏,王 旭,等.大干伸长多丝埋弧焊接工艺研究[J].焊管,2018,41(4):7.[doi:10.19291/j.cnki.1001-3938.2018.04.002]
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备注/Memo

备注/Memo:
收稿日期:2020-09-29
作者简介:赵 波(1975—),男,高级工程师,中国石油集团渤海石油装备制造有限公司一级工程师,现主要从事管线钢材料、焊管管件焊接工艺及装备研究工作。
更新日期/Last Update: 2021-04-08