Properties and Microstructure of S355J2W+N Weathering Steel Welded with Non-coppered Wire

CHEN Xiaoxia; ZHANG Yanhui; LU Erjing; SHI Baoling; HOU Jinzhu

doi:10.7512/j.issn.1001-2303.2024.10.08

“Huaguang”Cup Excellent Thesis Recommendation | Views : 0 下载量: 0 CSCD: 0

PDF
Export
Share
Collection
Album

Properties and Microstructure of S355J2W+N Weathering Steel Welded with Non-coppered Wire
Vol. 54, Issue 10, Pages: 70-76(2024)
Published： 25 October 2024 ，
DOI： 10.7512/j.issn.1001-2303.2024.10.08
稿件说明：

移动端阅览

陈晓霞，张艳辉，鲁二敬，等.无镀铜焊丝焊接S355J2W+N耐候钢的焊接接头性能与组织［J］.电焊机，2024，54（10）：70-76.

CHEN Xiaoxia, ZHANG Yanhui, LU Erjing, et al.Properties and Microstructure of S355J2W+N Weathering Steel Welded with Non-coppered Wire[J].Electric Welding Machine, 2024, 54(10): 70-76.
陈晓霞，张艳辉，鲁二敬，等.无镀铜焊丝焊接S355J2W+N耐候钢的焊接接头性能与组织［J］.电焊机，2024，54（10）：70-76. DOI： 10.7512/j.issn.1001-2303.2024.10.08.

CHEN Xiaoxia, ZHANG Yanhui, LU Erjing, et al.Properties and Microstructure of S355J2W+N Weathering Steel Welded with Non-coppered Wire[J].Electric Welding Machine, 2024, 54(10): 70-76. DOI： 10.7512/j.issn.1001-2303.2024.10.08.

摘要

采用无镀铜焊丝对12 mm厚S355J2W+N耐候钢进行MAG焊接试验，通过拉伸试验、弯曲试验、冲击试验、硬度试验、金相组织和断口组织分析的方法，进行S355J2W+N无镀铜焊丝接头性能的研究。结果表明，无镀铜焊丝焊接的S355J2W+N耐候钢焊接接头具有良好的拉伸和弯曲性能，抗拉强度和屈服强度均高于母材标准值，断口呈韧性断裂特征。焊缝冲击韧性低于焊接热影响区，且随温度的降低而下降，但均满足母材冲击功不低于27 J（-20 ℃）的标准要求。焊接接头各区域的硬度符合ISO15614-1标准，均小于HV380，母材区域硬度最低，过热区硬度最高，焊接热影响区的硬度波动最大。金相组织分析表明，焊接接头由焊缝区、过热区、相变重结晶区和不完全相变重结晶区组成，相变重结晶区组织细小均匀，性能最佳。无镀铜焊丝焊接的S355J2W+N耐候钢焊接接头的性能满足生产标准要求。

Abstract

The study on the performance of S355J2W+N weathering steel welded joints using non-copper coated welding wire OK AristoRod 13.26 involved MAG welding tests on 12 mm thick steel. The research methods included tensile testing

bending testing

impact testing

hardness testing

metallographic structure analysis

and fracture surface analysis. The results indicate that the welded joints of S355J2W+N weathering steel using non-copper coated welding wire exhibit good tensile and bending properties

with tensile strength and yield strength higher than the standard values of the base material

and the fracture surface shows characteristics of ductile fracture. The impact toughness of the weld is lower than that of the heat-affected zone and decreases with decreasing temperature

but both meet the standard requirement that the impact energy of the base material should not be less than 27 J (-20 ℃). The hardness of various regions of the welded joint conforms to the ISO15614-1 standard

all being less than HV380

with the base material having the lowest hardness

the over-heated zone the highest

and the greatest fluctuation in hardness observed in the heat-affected zone. Metallographic structure analysis shows that the welded joint consists of weld zone

over-heated zone

phase transformation recrystallization zone

and incomplete phase transformation recrystallization zone

with the phase transformation recrystallization zone having fine and uniform structures

exhibiting the best performance. The performance of S355J2W+N weathering steel welded joints using non-copper coated welding wire meets the production standard requirements.

关键词

无镀铜焊丝S355J2W+N耐候钢力学性能金相组织断裂特征

Keywords

non-coppperd wireS355J2W+Nmechanical propertiesmetallographic structurefracture characteristic

references

叶永健，陈素文. 耐候钢的研究与应用［C］//2015中国钢结构行业大会论文集，2015：422-429．

王刚，张永昌，姚宝平，等. 耐候钢焊接接头的组织性能及抗腐蚀性能研究［J］. 电焊机，2019，49（2）：8-12.

WANG G，ZHANG Y C，YAO B P，et al. Study on Microstructure，Mechanical Properties，and Corrosion Resistance of Weathering Steel Welded Joints［J］. Electric Welding Machine，2019，49（2）：8-12.

郭超超，丁成钢，杨大龙. S355J2W+N耐候钢板根部大熔深MAG对接焊工艺及接头的组织和性能［J］. 电焊机，2020，50（11）：50-54+144.

GUO C C，DING C G，YANG D L. MAG Welding Process with Large Penetration Depth at the Root of S355J2W+N Weathering Steel Plate and the Microstructure and Properties of the Welded Joints［J］. Electric Welding Machine，2020，50（11）：50-54+144.

白志范，李贵中，王超. S355J2W+N钢焊接接头显微组织与力学性能［J］. 吉林大学学报：工学版，2011，41（2）：202-204．BAIZF，LIG Z，WANGC. Microstructure and Mechanical Properties of S355J2W+N Steel Welded Joints［J］. Journal of Jilin University： Engineering Edition，2011，41（2）：202-204.

BS EN l0025-5—2004，热轧结构钢产品一第五部分：改良耐候结构钢的交货技术条件［S］．

熊腊森. 焊接工程基础［M］. 北京：机械工业出版社，2002．

Zhang H W，Su J H，Chen J. Status and development trend of the welding consumables industry in China［J］．China Welding，2017，26（2）：23-31．

王暾. 无镀铜焊丝防锈性能及其快速评价技术研究［D］. 天津：天津大学，2010．

WANG T. Study on the Rust Prevention Performance of Non-Copper Coated Welding Wire and Its Rapid Evaluation Technology［D］. Tianjin：Tianjin University，2010.

曹晓涛，贾卓新，Wolfgang Tillmann，等. 固体润滑剂对无镀铜焊丝导电嘴磨损性能的影响［J］. 焊接学报，2020，41（9）：22-27．

CAO X T，JIA Z X，Wolfgang Tillmann，et al. Influence of Solid Lubricants on the Wear Performance of the Nozzle for Non-Copper Coated Welding Wire［J］. Transactions of The China Welding Institution，2020，41（9）：22-27.

宋月，陈朝晖，杜春雨，等. 无镀铜焊丝生产工艺装备及未来发展趋势［J］. 金属制品，2020，46（5）：1-3．

SONG Y，CHEN Z H，DU C Yet al. Production Equipment and Future Development Trend of Non-Copper Coated Welding Wire［J］. Metal Products，2020，46（5）：1-3.

黄耀波. 无镀铜实心焊丝抗锈及工艺性能的研究现状［J］. 机械制造文摘（焊接分册），2019（4）：38-44．

HUANG Y B. Research Status on Rust Prevention and Process Performance of Non-Copper Coated Solid Welding Wire［J］. Mechanical Manufacturing Abstracts （Welding Volume），2019（4）：38-44.

Alert me when the article has been cited

提交

Influence of Multiple Welding Repairs on the Properties of SA-533BCL1 Steel Welded Joints

Effect of single/double pass welded ioint performance of Q345E steel with repair welding once in bond area

Effect of welding curr ent on microstructure and properties of 304 stainless steel Laser-MIG hybrid welding

High Efficiency Magnetic Control Arc Welding Process of Aluminum Alloy Long and Thin Wall Pulse Composite for Rail Vehicles

Study on the Control Technology of Microstructure and Properties of High Strength Stainless Steel Resistance Spot Welding by Applied Magnetic Field