鞍钢技术2023年第3期ANGANGTECHNOLOGY生产实践热浸镀铝锌硅镁稀土合金偏析的原因分析及措施王东溟，李学慧，梁荣山（鞍钢实业集团冶金资源再生利用分公司，辽宁鞍山114021）摘要：分析了影响热浸镀铝锌硅镁稀土合金成分偏析的原因，得出结论，在合金中各元素含量一定的条件下，合金锭的锭重、锭型以及冷却方式和强度是影响合金成分偏析程度的主要因素。提出了最佳生产工艺方案，即锭模宽厚比应在8以上，雾化喷水量1.0~1.2kg/kg合金，喷雾时间5~6min，喷淋喷水量2.0~3.0kg/kg合金，喷淋时间15~20min。方案实施后，有效地控制了合金锭元素偏析，生产的铝锌硅镁稀土合金锭化学成分较为均匀，外观质量优良。关键词：热镀锌；铝锌硅镁稀土合金；成分偏析；锭模宽厚比；冷却中图分类号：TG307D01:10.3969/j.issn.1006-4613.2023.03.0013AnalysisonCausesLeadingtoAlloySegregationofHotDipGalvanizedIgnotswithAl-Zn-Si-Mg-REandCountermeasuresWANGDongming,LIXuehui,LIANGRongshan(MetallurgicalResourceRecyclingBranchofAnsteelIndustryGroupCor.,Ltd.,Anshan114021,Liaoning,China)Abstract:ThecausesinfluencingthealloysegregationofhotdipgalvanizedignotswithAl-Zn-Si-Mg-REwereanalyzedandthenitwasconcludedthatasthecontentofeachelementinthealloywascertain,suchfactorsastheweightandtheshapeofalloyingots,thecoolingmethodandtheirstrengthswerethemainfactorsthatinfulencedthedegreeofalloysegregation.Sotheoptimumprocessprogramwasproposed,whichincludedtheratioofwidthtothicknessofingotsover8,atomizingwatersprayvolumeintherangefrom1.0to1.2kgperkgalloy,spraytimefrom5to6minutes,workingwatersprayvolumeintherangefrom2.0to3.0kgperkgalloyanditsspraytimefrom15to20minutes.Aftertheprogramwasputintouse,theelementsegregationofabove-mentionedelementswascontrolledeffectivelyandchemicalcompositionsinalloyingotswithAl-Zn-Si-Mg-REwererelativelyuniformandtheirsurfacequalitywasgood.Keywords:hotdipgalvanized;Al-Zn-Si-Mg-REalloy;compositionsegregation;ratioofwidthtothicknessofingot;cooling总第441期文献标识码：A文章编号：1006-4613(2023)03-0058-05热镀锌作为钢铁覆盖保护材料越来越受到重视，一直以来均通过向锌浴中添加合金元素改变锌的流动性、粘附性等，提高镀层抗腐蚀性和镀件王东溟，硕士，...
