[1]苏沫林,韩永典,赵 雷,等.EH36钢药芯焊丝电弧焊接接头冲击及抗冷裂性能研究[J].焊管,2021,44(7):18-22.[doi:10.19291/j.cnki.1001-3938.2021.07.003]
 SU Molin,HAN Yongdian,ZHAO Lei,et al.Research on the Impact and Cold Cracking Resistance of EH36 Steel Flux Cored Wire Arc Welding Joint[J].,2021,44(7):18-22.[doi:10.19291/j.cnki.1001-3938.2021.07.003]
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EH36钢药芯焊丝电弧焊接接头冲击及抗冷裂性能研究()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
第44卷
期数:
2021年第7期
页码:
18-22
栏目:
试验与研究
出版日期:
2021-07-28

文章信息/Info

Title:
Research on the Impact and Cold Cracking Resistance of EH36 Steel Flux Cored Wire Arc Welding Joint
文章编号:
10.19291/j.cnki.1001-3938.2021.07.003
作者:
苏沫林韩永典赵 雷徐连勇郭慧娟
1. 天津大学 材料科学与工程学院,天津 300350;
2. 天津大学 天津市现代连接技术重点实验室,天津 300350)
Author(s):
SU Molin HAN Yongdian ZHAO Lei XU Lianyong GUO Huijuan
1. School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China;
2. Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin 300350, China
关键词:
EH36钢气保护药芯焊丝电弧焊焊接接头刚性拘束焊接冷裂试验冲击试验冷裂纹
Keywords:
EH36 steel FCAW-G welded joint a rigid restraint welding cold cracking test impact test cold crack
分类号:
TG113.25
DOI:
10.19291/j.cnki.1001-3938.2021.07.003
文献标志码:
A
摘要:
为了研究EH36钢在海洋工程结构件中的冷裂现象,采用刚性拘束焊接冷裂试验装置制备了GFL-71Ni和 DW-A55L药芯焊丝电弧焊(FCAW-G)焊接接头,并对其进行扩散氢含量测试、焊缝化学成分分析以及冲击性能试验。试验结果显示,DW-A55L焊丝接头的扩散氢含量低于GFL-71Ni焊丝接头;两种焊丝接头焊缝的冲击功分别为19.7 J和20.5 J,均比熔合线+1 mm处的冲击功低;GFL-71Ni焊丝接头熔合线+1 mm处的冲击功比DW-A55L焊丝稍高,二者的冲击功分别为(36.4±1.6)J和(31.9±3.4)J。研究表明,两种焊丝焊接接头均具有良好的抗冷裂性能,且DW-A55L焊丝接头的抗冷裂性能优于GFL-71Ni焊丝。
Abstract:
In order to study the cold cracking phenomenon of EH36 steel in offshore engineering structures, GFL-71Ni and DW-A55L flux cored wire arc welding (FCAW-G) welded joints were prepared by using a rigid restraint welding cold cracking test device, and the diffusion hydrogen content, chemical composition and impact performance of the welded joints were tested. The results show that the diffusion hydrogen content of DW-A55L welding wire joint is lower than that of GFL-71Ni welding wire joint. The impact energy of two kinds of welding wire joint is 19.7 J and 20.5 J respectively, which is lower than that of fusion line + 1 mm. The impact energy at the fusion line of GFL-71Ni welding wire joint +1 mm is slightly higher than that of DW-A55L wire, and the impact energy of both is (36.4±1.6) J and (31.9±3.4) J respectively. The results show that both welding wire joints have good cold cracking resistance, and the cold cracking resistance of DW-A55L welding wire joints is better than GFL-71Ni wire.

备注/Memo

备注/Memo:
基金项目: 工信部高技术船舶科研项目经费资助“深水半潜式生产储卸油平台工程开发”(项目编号SSBQ-2020-HN-01-04)。
作者简介:苏沫林(1994—),男,博士研究生,主要从事焊接微裂纹萌生扩展过程及疲劳寿命预测等方面研究工作。
收稿日期:2021-04-03

更新日期/Last Update: 2021-07-23