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ManufacturingEngineeringandTechnology-HotProcessesBilingualCourse•教材及课件:English•讲解:以中文为主•要求掌握:专业知识+英语•作业及考试:English•考核方式:闭卷50%+开卷50%•总评成绩:考试成绩70%+出勤与作业20%+实验10%学习方法:课堂内容的理解+课后复习、作业PARTIIIFormingandShapingProcessesandEquipment(成形/成型工艺与设备)袁宁Email:menyuan@scut.edu.cnMobile:15902022369火花塞过滤器气门挡风玻璃仪表盘天线车身车牌尾灯透镜油箱轮胎弹簧洗涤壶油盘轮毂盖FigureIII.1FormedandshapedpartsinatypicalautomobilelFormetals:a.moltenmetalInitialMaterial(原材料)individualingots(钢锭/铸锭)slabs(板材)rod(棒材)pipe(管材)continuouslycastcastcaststructures(铸造组织/结构)wrought(“worked”)structures(锻造组织/结构)-Then,formedbythedeformationprocesses(变形工艺)describedinPartIII:convertedlFormetals:b.metalpowders(金属粉末)partsshapinglForplastics(塑料):–pellets(颗粒)–flakes(片)–powder(粉末)partsshapinglForceramics(陶瓷):–clays(粘土)andoxides(氧化物)–obtainedfromores(矿石)orproducedsynthetically(合成地)partsshapingFormingProcess(成形工艺)ShapingProcess(成型工艺)What’sthedifference?Forminglchangingtheshapeofanexistingsolidbody(实体)workpiece,stock,orblank(毛坯/坯料/工件)intheshapeofaplate(板材),asheet(板料),abar(杆件),arod(棒材),wire(线材),ortubing(管件/管材)allcalledExamplesofforming:wirecoathangerstraightpiecebendingandtwisting(弯曲和扭转)blank(毛坯)partdrawnwire(拉拔线材)cutExamplesofforming:metalbodyforanautomobileflatpiecewithsuitablesizestamping(冲压)rolledsheet(轧板)blanking(落料)asstrip(带料/条料)incoils(卷料/卷材)blank(毛坯)partShapinglinvolvemolding(模塑成型)andcasting.–theresultingproductisusuallyatornearthefinaldesiredshape;–mayrequirelittleornofurtherfinishing.Examplesofshaping:Aplasticcoathanger,ismadebyforcingmoltenplasticintoamoldintheshapeofthehanger.injectionmolding(注射/注塑成型)plasticpelletsfinialshapeExamplesofshaping:•Thewhiteceramicinsulator(陶瓷绝缘体)foranautomotivesparkplug–shapingclayinamold–thendrying(烘干)andfiring(烧制)itinafurnace.•Longcontinuousproducts(连续型材)–plates–sheets–tubing–barswithvariouscross-sections(横截面)•Somemanufacturingoperations–rolling(轧制)–extrusion(挤压/挤出)–drawing(拉拔)produce•materials–metallicmaterials(金属材料)–nonmetallicmaterials(非金属材料)–includingreinforcedplastics(增强塑料)thencutintothedesiredlengths.•discrete(离散的/独立的)products–turbinedisks(涡轮盘)–gears(齿轮)–bolts(螺栓)•Otheroperations–forging(锻造)–powdermetallurgy(粉末冶金)–mostformingandshapingprocessesfornonmetallicmaterialsproduceMainContentinPartIII•theimportantfactorsinvolvedineachformingandshapingprocess•processvariables(工艺变量/工艺参数)•characteristicsofthemachineryandtheequipment•Animportantconsideration:Øworkability(可加工性)Øformability(可成形性)-meaningthemaximumamountofdeformationamaterialcanwithstandinaparticularformingandshapingprocesswithoutfailure(失败).workability(可加工性)-appliedtobulkdeformationprocesses(体积成形/变形工艺),suchasrolling,forging,andextrusion-materialmainlyundergoescompressiveforces(压力)Chapter13/14/15theworkpiecesandproductshavearelativelyhighratioofvolume(体积)tosurfacearea(表面积)orofvolumetothickness.-usedforsheet-formingprocesses(板料成形/变形工艺),suchasbending,stamping,stretchforming,anddeepdrawing-materialmainlyundergoestensileforces(拉力)Chapter16formability(可成形性)PartIIIalsodescribes:Øprocessingofpolymers(聚合物),composites(复合材料),ceramics,andglasses;Ørapidprototypingoperations(快速原型技术).Chapter18Chapter19IntroductionofPartIII(1)Chap.13RollingofMetals(2)Chap.14ForgingofMetals(2)Chap.15ExtrusionandDrawingofMetals(2)Chap.16Sheet-MetalFormingProcesses(3)Chap18FormingandShapingProcessesofPlasticsandCompositeMaterials(3)Chap.19Rapid-PrototypingOperations(1)Experiment(Chapter16)(2)Examination:Week17CourseSchedule(Week11~14)KEYTERMS•forming成形,变形•shaping成型•compressive压缩的,受压的•tensile拉伸的,受拉的•workpiece工件•stock坯料•blank毛坯•bulkdeformationprocesses体积变形工艺•sheet-formingprocesses金属板料成形工艺•workability可加工性•Formability可成形性ReviewQuestions1、What’sthedifferencebetweenformingprocessesandshapingprocesses?Giveanexample.2、What’stherelationbetweenworkpieceandproduct?3、Whatdoworkabilityandformabilitymean?Andwhat’sthedifferencebetweenthem?4、Whatisbulkdeformationprocesses?5、Whatisthedifferencebetweenbulkdeformationprocessesandsheet-formingprocesses?
本文标题:制造工程与技术(热加工)英文版0-Introduction
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