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1、本科机械毕业设计论文CAD图纸QQ401339828摘要本次设计中的400m³球罐用于贮存氧气，其球壳板的材质为16MnR,本文对其母材的焊接性做了简要的分析，并在次基础上选择了球罐焊接前的预热温度，以及焊接方法和焊接材料。预热温度为120-140℃，焊接方法为焊条电弧焊，焊条为E5015。根据工厂的生产经验和相关标准编制了400m³球罐的生产工艺流程。在整个生产过程中，球壳板的压制成形，球罐的组装与球罐的焊接属于生产中的重点与难点，在本文中都进行了详细的分析和论述。球壳板成形采取布局成形的方法，必须在现场
2、进行。本文根据球罐上每条焊缝的不同特点，制定了各个焊缝的具体焊接方法，并选择了焊接工艺参数。球罐组装‘焊接之后，需要进行焊后处理，包括无损检测，焊后热处理，以及耐压试验等，本文也都进行了简要的分析和说明，并介绍了相应的处理方法和注意事项。关键词：球罐成形组装焊接57本科机械毕业设计论文CAD图纸QQ401339828AbstractThedesignofthe400m³sphericalcontainerusedforstoreoxygen,itssphericalshellplatematerialis1
3、6MnR.Inthispaper,theweldingofthebasemetalwasanalysedbriefly,andonthisfoundation,thepreheattemperaturebeforethesphericalcontainerforwelding,theweldingprocess,andtheweldingmaterialwereselected.Thepreheattemperatureis120-140℃，theweldingprocessistheshieldmetal
4、arewelding,thecoveredelectrodesareE5015.Theproducetechnologiccourseofthe400m³sphericalcontainerwascompiledaccordingtotheexperienceofthemanufacturingplantandrelatedstandards.Intheentireproductionprocess,thepressofformingsphericalshellplate，theinstallationan
5、dweldingofsphericalcontainerbelongtoimportantanddifficultintheproduction.Inthispaper,theywerecarriedoutadetailedanalysisandexposition.themethodsofformingthesphericalshellplatewaspartforming.Theofthesphericalcontainerwasdividedtwoparts,theyarethepartsinstal
6、lationmethod,anditshouldbeconductedatthescene.Accordingtothedifferentcharacterofeachweldonthesphericalcontainer,inthispaper,theconcreteweldingprocessofeveryweldwascomplied,andtheweldingprocedureparameterswerechose.Aftertheinstallationandweldingofthespheric
7、alcontainer,thereneedtoconductprocesswhentheweldingfinished,whichincludenon-destructivetesting,postweldheattreatment,andthepressuretest,andsoon.Inthepaper,theywereconductedabriefanalysisandexposition,andwereintroducedthecorrespondingresolvemethodsandattent
8、ionmatters.Keywords:Sphericalcontainerforminginstallationwelding57本科机械毕业设计论文CAD图纸QQ401339828目录绪论11.1球形容器的特点11.2球形容器分类11.3国内球罐建造情况2第一章材料选用31.1材料的选择原则31.2壳体用材料41.3锻件用钢51.4螺栓、螺母和支撑结构的选材51.4.1螺栓螺母的选用51.4.2支承结构（支柱
