铸造毕业设计

成都理工大学毕业设计（论文）1车床拨叉零件毛坯成形工艺设计作者姓名：专业班级：指导教师：摘要本设计题目的任务是完成车床拨叉零件成形工艺设计，根据本设计题目生产性质、零件结构特点和用途，确定采用铸造成形工艺方法做出该零件的毛坯。其具体内容包括了铸造工艺方案的设计，铸造工艺参数的确定，砂芯设计，浇注系统设计，冒口设计，冷铁和出气孔设计，砂型及砂芯的烘干等，又对铸造工艺装配进行了设计，内容包括模样、模板、芯盒和砂箱等的设计。绘制出了工艺装配图、铸造工艺图、铸件图和模样图。本题目的研究方法，是运用所学《材料成形工艺基础》中的铸造成形理论，对金属液在充型、结晶、凝固和冷却过程中发生的一系列物理、化学的变化及铸件内部的变化进行了理论研究和分析。对如何保证铸件的质量，在合金液的成分上进行了研究和探讨，对工艺上采取的相应措施进行了可行性的研究和探讨，针对本题目，如何运用灰铸铁(HT250)铸造出所要求的零件的铸造成型工艺作了详细阐述，对运用砂型铸造设计的浇注系统做出了详细设计，并做出了铸型装配图，铸造工艺图和模样图。关键词：砂型铸造浇注系统铸造工艺图模样铸型装配图HT250成都理工大学毕业设计（论文）2AbstractThedesignprojectistocompletethetaskofformingprocessforkpartsofLathedialtheformingdesign,accordingtothenatureoftheproductionofadesign,partstructuralcharacteristicsandusestodeterminethemethodusedtomakethecastingformingprocessoftheroughparts.Thespecificcontentsofthecastingprocessinthedesign,castingprocessparametersidentified,thesandcoredesign,gatingsystemdesign,riserdesign,thedesignofcoldiron,andoutofholes,sandandsandcoreofdrying,butalsoonthecastingassemblyhasbeendesigned,includingappearance,templates,coreboxesandsandboxesandotherdesigns.Assemblydiagramdrawnoutprocess,castingprocessmaps,chartsandpatterncastingmap.Thesubjectofresearchmethodsistousewhattheyhavelearnedmaterialformingtechnologybaseinthecastingformingthetheoryofliquidinthefillingofmetal,crystal,solidificationandcoolingprocessinaseriesofphysicalandchemicalchangesandchangesinthecastingsThetheoreticalresearchandanalysis.Castingonhowtoensurethequalityoftheingredientsintheliquidalloywascarriedoutresearchandstudyontheprocesstotaketheappropriatemeasurestostudyandexplorethefeasibility.Accordingtothistopic,howtoapplygrey(HT250)castingoutthepartsrequiredthecastingmoldingprocesswerediscussedindetail,tousethesandcastinggatingsystemdesign,andhasmadethedetaileddesigndrawingsmadecasting,castingprocesschartandshapefigure.Keywords：SandCastingGatingsystemCastingChartAppearanceMoldassemblydrawingHT250成都理工大学毕业设计（论文）3目录第1章前言..................................................................................................................5第2章零件毛坯制造方法的确定....................................................................................62.1零件的工艺分析.....................................................................................................62.2毛坯制造方法的确定..............................................................................................8第3章零件材料的选择及对化学成分的要求...................................................................93.1零件材料的选择.....................................................................................................93.2本铸件熔炼时化学成分的要求................................................................................93.3HT250合金的熔炼...............................................................................................10第4章铸造工艺方案的确定..........................................................................................124.1铸造工艺方法.......................................................................................................12第5章零件毛坯的铸造工艺设计...................................................................................135.1铸件浇注位置的确定.............................................................................................135.2型芯设计..............................................................................................................165.3铸造工艺参数的确定.............................................................................................185.4绘制铸造工艺图.....................................................................................................235.5浇注系统设计........................................................................................................235.6冒口.....................................................................................................................285.7冷铁.....................................................................................................................29第6章铸造工艺装备设计..............................................................................................326.1.模样设及模样的种类............................................................................................326.2模样材质的选择及制造步骤...................................................................................326.3模样尺寸的计算....................................................................................................336.4模板.....................................................................................................................33第7章砂箱.................................................................................................................357.1砂箱选择和设计原则.............................................................................................357.2砂箱的结构设计....................................................................................................35第8章支座铸件芯盒的确定..........................................................................................368.1芯盒的种类及特点分析..........................................................................................368.2芯盒设计的一般原则...............................