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1、學號1010131030_畢業(yè)論文（設計）課題雙相不銹鋼的焊接工藝研究學生姓名羅浩院部機械工程學院專業(yè)班級10金屬材料工程（2）班指導教師楊付雙二〇一四年六月雙相不銹鋼的焊接工藝研究摘要雙相不銹鋼是由奧氏體和鐵素體兩相組織按一定比例所組成，它兼有奧氏體不銹鋼和鐵素體不銹鋼的性能。與單相組織的不銹鋼相比較，具有強度高的特征。近年來，雙相不銹鋼應用范圍迅速擴大，已成為奧氏體不銹鋼在許多應用領域最有力的競爭對手。本論文首先介紹雙相不銹鋼的定義、分類和性能以及其內(nèi)部組織和化學成分,并且具體對每一種化學成分進行介紹.然后闡述針對不同的雙
2、相不銹鋼焊接方法的選擇,焊接設備的選用,焊接材料的選擇,焊接工藝參數(shù)的制定等等.最后以2205雙相不銹鋼為例重點闡述其焊接工藝研究。關鍵詞：焊接工藝;焊接參數(shù);焊條電弧焊。TheWeldingProcessof?duplexstainlesssteelAbstractDuplexstainlesssteelismadeofausteniteandferritetwo-phasestructurecomposedbyacertainpercentage,whichcombinestheperformanceofausteniti
3、cstainlesssteelandferriticstainlesssteels.Comparedwiththesinglephasestainlesssteelwithhighstrengthcharacteristics.Inrecentyears,therapidlyexpandingrangeofapplicationsofduplexstainlesssteel,austeniticstainlesssteelhasbecomethemostpowerfulcompetitorinmanyapplications.
4、Thispaperintroducesthedefinitionofduplexstainlesssteel,classificationandperformanceaswellasitsinternalorganizationandchemicalcomposition,andspecificchemicalconstituentsforeachpresentation.Thenexplainedthechoiceforchoosingdifferentmethodsofduplexstainlesssteelwelding
5、,weldingequipment,Finallyin2205asanexamplefocusesontheselectionofweldingparametersforweldingmaterials,etc.todeveloptheirresearchweldingprocess.Keyword:Weldingprocess;Processparameters;SMAW目錄摘要Abstract第1章雙相不銹鋼··························································
6、·11.1雙相不銹鋼的定義和分類··················································11.1.1雙相不銹鋼的定義·····················································11.1.2雙相不銹鋼的分類·····················································11.2雙相不銹鋼的組織和性能··················································1
7、1.2.1雙相不銹鋼的基本組織特征·············································11.2.2雙相不銹鋼的基本性能·················································11.3雙相不銹鋼的化學成分····················································2第2章雙相不銹鋼的焊接····················································42.1雙相不銹鋼
8、的焊接材料及選用···············································42.1.1雙相不銹鋼的焊接材料··················································42.1.2對焊縫金屬的要求···
