摘要
焊剂是埋弧焊的必需耗材。在焊接过程中,焊剂、熔池及电弧之间存在复杂的化学反应,因此,焊剂对焊缝金属的成分有着显著的调控作用。为了获得优质的焊接接头,有必要深入理解焊剂对焊缝金属成分的调控机理。本文综述了近年来在埋弧焊中焊剂对焊缝金属成分调控的研究进展,从热力学角度阐明了埋弧焊中O、Si、Mn、Ti及C等元素的过渡机制并阐释了大线能量下各元素过渡的冶金特性。同时,评估了现有针对埋弧焊的焊缝金属成分预测模型。最后,指出了进一步探索焊剂对焊缝金属调控机理所需要解决的基础问题。
Flux is an indispensable consumable for submerged arc welding.Owing to the occurrence of complex chemical reactions between flux(slag),weld pool,and arc plasma,flux plays an essential role in determining the final composition of weld metal.To ensure a sound weldment,understanding how submerged arc welded metal compositions are fine-tuned by flux optimization is necessary.Herein,recent progress regarding the control mechanisms of fluxes on submerged arc welded metal compositions is studied.Particularly,the element transfer behaviors of major elements,including oxygen,silicon,manganese,titanium,and carbon,are documented from thermodynamic perspectives.Salient element transfer features incurred by the application of high heat input welding are interpreted.Moreover,the capabilities and limitations of prevailing compositional prediction models are evaluated.Finally,fundamental challenges to be explored further are discussed.
作者
王聪
张进
WANG Cong;ZHANG Jin(School of Metallurgy,Northeastern University,Shenyang 110819,China)
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2021年第9期1126-1140,共15页
Acta Metallurgica Sinica
基金
国家自然科学基金项目Nos.U20A20277、51861145312和52011530180
中央高校基本科研业务费项目No.N2025025
兴辽英才基金项目Nos.XLYC1807024和XLYC1802024
辽宁省工业重大专项项目No.2019JH1/10100014
辽宁省区域创新发展联合基金项目No.2020-YKLH-39
英国皇家工学院项目No.TSPC1070
海洋装备用金属材料及其应用国家重点实验室开放基金项目No.SKLMEA-K201903。
关键词
埋弧焊
焊剂
成分预测
大线能量焊接
submerged arc welding
welding flux
composition prediction
high heat input welding
