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毕业设计（论文）类型：□毕业设计说明书□毕业论文题目：高强度船体结构钢的焊接工艺学生姓名：魏明指导教师：专业：船舶工程技术时间：南通职业大学毕业论文高强度船体结构钢的焊接工艺I摘要本文首先介绍的是船体用的高强度钢的焊接工艺,分别从船用高强度钢和焊接两方面。高强度船体结构钢焊接工艺的价值所在以及国内外目前的研究动态。目前高强度钢在船体中的使用情况、使用范围及其选用的条件,也提到了在船体建造中的高强度钢的选用条件、原则及其特性。还有就是高强度钢在船体结构中的应用。然后重点研究焊接材料，对如何选择焊接材料、焊接方法、焊接参数、焊前准备工作等进行了一定的研究，还有高强钢的焊接问题以及高强度钢的焊接性。列举了在焊接过程中可能产生的一些问题（例如冷裂纹与焊接变形等）及焊后产生的问题及其防止措施。介绍了焊接材料的发展现状，焊接质量的检验过程与检验方法。最后对焊接材料与焊接方法的发展趋势进行了一下展望。介绍了如何制定焊接工艺指导作业书，焊接工艺评定的目的、焊接工艺的评定条件、焊接工艺评定的方法、焊接工艺评定程序。关键词：高强度钢，船体，焊接，材料南通职业大学毕业论文高强度船体结构钢的焊接工艺IIAbstractThispaperdescribesahigh-strengthsteelweldingprocesshullfrommarineweldingofhighstrengthsteelsandtworespectively.High-strengthhullstructuralsteelweldingprocesswherethevalueofthecurrentresearchtrendsathomeandabroad.High-strengthsteelscurrentlyinuseinthehull,andtheoptionaluseoftheconditionsmentionedinthehullconstructionofhigh-strengthsteelselectionconditions,principlesandcharacteristics.Thereisahigh-strengthsteelinthehullstructure.Thenwefocusontheweldingmaterialonhowtochoosetheweldingmaterials,welding,weldingparameters,suchasthepreparationbeforeweldingcarriedoutsomeresearch,thereistheproblemofhigh-strengthsteelsandhighstrengthsteelwelding.Citedanumberofproblems(suchascoldcracksandweldingdeformation)andissuesarisingafterweldingandtheprecautionsthatmayariseduringtheweldingprocess.ItIntroducedthedevelopmentofweldingmaterials,weldingqualityinspectionprocessandinspectionmethods.Finally,thedevelopmenttrendofweldingmaterialsandweldingmethodswereabouttheprospect.Wedescribehowtodevelopweldingprocessguidebookoperation,thepurposeoftheweldingprocedurequalification,weldingtechnologyassessmentconditions,methodofweldingprocedurequalification,weldingprocedurequalificationprocess.Keywords:high-strengthsteel，hull，welding，materials南通职业大学毕业论文高强度船体结构钢的焊接工艺III目录摘要..........................................................................................................IAbstract.........................................................................................................II目录........................................................................................................III第一章绪论...................................................................................................11.1研究意义.....................................................................................................................11.2我国研究情况.............................................................................................................11.3国外研究情况.............................................................................................................2第二章高强度船体结构钢的研究.........................................................42.1高强度船体结构钢的使用情况探讨.............................................................42.2高强度钢在船体结构中的应用范围...............................................................42.3高强钢的选用研究...................................................................................................42.3.1高强度钢的特性与在建造中的要求............................................................62.3.2高强度钢在船体建造中的原则....................................................................72.4高强度钢值得注意的问题研究........................................................................82.4.1整体设计...........................................................................................................82.4.2冷裂纹..............................................................................................................92.4.3再热裂纹..........................................................................................................9第三章船体结构高强度钢的焊接材料研究................................................103.1高强度船体结构钢的焊接材料的发展现状...........................................................103.2高强度钢的可焊性分析............................................................................................113.3船体结构高强度钢的焊接材料..............................................................................11第四章船体高强度钢的焊接工艺研究.......................................................134.1高强度钢的焊接问题及处理方法的初步探讨..........................................134.1.1高强度钢的焊前问题分析....................................................................134.1.2焊后处理与防止冷裂纹的措施....................................................................154.2高强度钢的焊接工艺.........................................................................................164.2.1焊接材料的选择.............................................................................................164.2.2高强度钢的焊接参数.....................................................................................184.2.3船体高强度钢的焊接方法与特点......................................................204.2.4高强度钢的焊接性试验方法...............................................................224.3焊接结构设计分析与方法研究......................................................................224.3.1焊接结构设计的分析............................................................................234.3.2高强度钢焊接接头的疲劳....................................................................234.4焊接质量检验...........................................................................