2023年2月材料开发与应用文章编号:1003-1545(2023)01-0017-06MnO对碳钢药芯焊丝性能影响研究寇伟祥1,张明洋1,韩欢庆1,2(1.天津三英焊业股份有限公司,天津301700;2.安泰科技股份有限公司,北京100081)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。关键词:药芯焊丝;MnO;力学性能中图分类号:TG422.3文献标识码:AStudyonEffectofMnOonPropertiesofCarbonSteelFluxCoredWireKOUWeixiang1,ZHANGMingyang1,HANHuanqing1,2(1.TianjinSainteagleWeldingCo.,Ltd.,Tianjin100081,China;2.AdvancedTechnologyandMaterialsCo.,Ltd.,Beijing301700,China)Abstract:TakingT492T1-1C1Afluxcoredwireasanexample,theinfluencesofdifferentadditionsofMnOintheformulaontheweldstructureandthemechanicalpropertiesofthedepositedmetalisstudiedbycomparingandanalyzingtheslagcomposi-tion,metallographicstructureandchemicalcompositionofthedepositedmetal,diffusionhydrogencontentandmechanicalprop-erties.TheresultsshowthatwiththeincreaseofMnOaddition,thecontentsofMnandOinthedepositedmetaldonotshowsig-nificantchanges.Theelongationandlow-temperatureimpactabsorptionworkofthedepositedmetalincreasefirstandthende-crease.BetterweldmicrostructureandmechanicalpropertiesareobtainedwhenthemassfractionofMnOis0.5%.Thediffusionhydrogencontentofthedepositedmetaltendstodecrease.Keywords:fluxcoredwire;MnO;mechanicalproperty收稿日期:2022-08-29作者简介:寇伟祥,男,1984年生,主要从事药芯焊丝研制。引用格式:寇伟祥,张明洋,韩欢庆.MnO对碳钢药芯焊丝性能影响研究[J].材料开发与应用,2023,38(1):17-22.KOUWX,ZHANGMY,HANHQ.StudyoneffectofMnOonpropertiesofcarbonsteelfluxcoredwire[J].De-velopmentandApplicationofMaterials,2023,38(1):17-22.随着药芯焊丝在造船、桥梁及钢构领域使用量的增加,...