MnO对碳钢药芯焊丝性能影响研究

Study on Effect of MnO on Properties of Carbon Steel Flux Cored Wire

摘要: 以T492T1-1C1A型药芯焊丝为例,通过对熔渣组分、熔敷金相组织、熔敷金属化学成分、扩散氢含量、力学性能的试验对比与分析,研究了MnO在配方中不同加入量对焊缝组织及熔敷金属力学性能的影响。结果表明,随着MnO的加入量增多,熔敷金属中Mn与O含量未呈现明显变化;熔敷金属的拉伸试验伸长率和低温冲击吸收功先升高后降低,在MnO质量分数为0.5%时获得了较好的焊缝微观组织和力学性能;熔敷金属扩散氢含量有降低趋势。
- 药芯焊丝 /
- MnO /
- 力学性能
Abstract: Taking T492T1-1C1A flux cored wire as an example, the influences of different additions of MnO in the formula on the weld structure and the mechanical properties of the deposited metal is studied by comparing and analyzing the slag composition, metallographic structure and chemical composition of the deposited metal, diffusion hydrogen content and mechanical properties. The results show that with the increase of MnO addition, the contents of Mn and O in the deposited metal do not show significant changes. The elongation and low-temperature impact absorption work of the deposited metal increase first and then decrease. Better weld microstructure and mechanical properties are obtained when the mass fraction of MnO is 0.5%. The diffusion hydrogen content of the deposited metal tends to decrease.
- flux cored wire /
- MnO /
- mechanical property

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