机械 模具 外文翻译 外文文献 英文文献 模具的发展趋势

译文一模具的发展趋势1模具CAD/CAE/CAM正向集成化、三维化、智能化和网络化方向发展（1）模具软件功能集成化模具软件功能的集成化要求软件的功能模块比较齐全，同时各功能模块采用同一数据模型，以实现信息的综合管理与共享，从而支持模具设计、制造、装配、检验、测试及生产管理的全过程，达到实现最佳效益的目的。如英国DELCAM公司的系列化软件就包括了曲面/实体几何造型、复杂形体工程制图、工业设计高级渲染、塑料模设计专家系统、复杂形体CAM、艺术造型及雕刻自动编程系统、逆向工程系统及复杂形体在线测量系统等。集成化程度较高的软件还包括PRO/ENGINEER、UG和CATIA等。国内有上海交通大学金属塑性成型有限元分析系统和冲裁模CAD/CAM系统；北京北航海尔软件有限公司的CAXA系列软件；吉林金网格模具工程研究中心的冲压模CAD/CAE/CAM系统等。（2）模具设计、分析及制造的三维化传统的二维模具结构设计已越来越不适应现代化生产和集成化技术要求。模具设计、分析、制造的三维化、无纸化要求新一代模具软件以立体的、直观的感觉来设计模具，所采用的三维数字化模型能方便地用于产品结构的CAE分析、模具可制造性评价和数控加工、成形过程模拟及信息的管理与共享。如PRO/ENGINEER、UG和CATIA等软件具备参数化、基于特征、全相关等特点，从而使模具并行工程成为可能。另外，CIMATRAN公司的MOLDEXPERT，DELCAM公司的PSMOLD及日立造船的SPACEE/MOLD均是3D专业注塑模设计软件，可进行交互式3D型腔、型芯设计、模架配置及典型结构设计。澳大利亚MOLDFLOW公司的三维真实感流动模拟软件MOLDFLOWADVISERS已经受到用户广泛的好评和应用。国内有华中理工大学研制的同类软件HSC3D45F及郑州工业大学的ZMOLD软件。面向制造、基于知识的智能化功能是衡量模具软件先进性和实用性的重要标志之一。如CIMATRON公司的注塑模专家软件能根据脱模方向自动产生分型线和分型面，生成与制品相对应的型芯和型腔，实现模架零件的全相关，自动产生材料明细表和供NC加工的钻孔表格，并能进行智能化加工参数设定、加工结果校验等。（3）模具软件应用的网络化趋势随着模具在企业竞争、合作、生产和管理等方面的全球化、国际化，以及计算机软硬件技术的迅速发展，网络使得在模具行业应用虚拟设计、敏捷制造技术既有必要，也有可能。美国在其21世纪制造企业战略中指出，到2006年要实现汽车工业敏捷生产/虚拟工程方案，使汽车开发周期从40个月缩短到4个月。2模具检测、加工设备向精密、高效和多功能方向发展（1）模具检测设备的日益精密、高效精密、复杂、大型模具的发展，对检测设备的要求越来越高。现在精密模具的精度已达23M，目前国内厂家使用较多的有意大利、美国、日本等国的高精度三坐标测量机，并具有数字化扫描功能。如东风汽车模具厂不仅拥有意大利产3250MM3250MM三坐标测量机，还拥有数码摄影光学扫描仪，率先在国内采用数码摄影、光学扫描作为空间三维信息的获得手段，从而实现了从测量实物建立数学模型输出工程图纸模具制造全过程，成功实现了逆向工程技术的开发和应用。这方面的设备还包括英国雷尼绍公司第二代高速扫描仪CYCLONSERIES2可实现激光测头和接触式测头优势互补，激光扫描精度为005MM，接触式测头扫描精度达002MM。另外德国GOM公司的ATOS便携式扫描仪，日本罗兰公司的PIX30、PIX4台式扫描仪和英国泰勒霍普森公司TALYSCAN150多传感三维扫描仪分别具有高速化、廉价化和功能复合化等特点。（2）数控电火花加工机床日本沙迪克公司采用直线电机伺服驱动的AQ325L、AQ550LLSWEDM具有驱动反应快、传动及定位精度高、热变形小等优点。瑞士夏米尔公司的NCEDM具有PE3自适应控制、PCE能量控制及自动编程专家系统。另外有些EDM还采用了混粉加工工艺、微精加工脉冲电源及模糊控制FC等技术。（3）高速铣削机床HSM铣削加工是型腔模具加工的重要手段。而高速铣削具有工件温升低、切削力小、加工平稳、加工质量好、加工效率高为普通铣削加工的510倍及可加工硬材料60HRC等诸多优点。因而在模具加工中日益受到重视。瑞士克朗公司UCP710型五轴联动加工中心，其机床定位精度可达8M，自制的具有矢量闭环控制电主轴，最大转速为42000R/MIN。意大利RAMBAUDI公司的高速铣床，其加工范围达2500MM5000MM1800MM，转速达20500R/MIN，切削进给速度达20M/MIN。HSM一般主要用于大、中型模具加工，如汽车覆盖件模具、压铸模、大型塑料等曲面加工，其曲面加工精度可达001MM。外文原文DIETREND1MOLDCAD/CAE/CAMBEINGINTEGRATED,THREEDIMENSIONAL,INTELLIGENTANDNETWORKDIRECTION1MOLDSOFTWAREFEATURESINTEGRATEDDIESOFTWAREFEATURESOFINTEGRATEDSOFTWAREMODULESREQUIREDRELATIVELYCOMPLETE,WHILETHEFUNCTIONMODULEUSINGTHESAMEDATAMODEL,INORDERTOACHIEVESYNDICATEDNEWSMANAGEMENTANDSHARINGOFINFORMATIONTOSUPPORTTHEMOLDDESIGN,MANUFACTURE,ASSEMBLY,INSPECTION,TESTINGANDPRODUCTIONMANAGEMENTOFTHEENTIREPROCESSTOACHIEVEOPTIMALBENEFITSSERIESSUCHASTHEUKDELCAMSSOFTWAREWILLINCLUDEASURFACE/SOLIDGEOMETRICMODELING,ENGINEERINGDRAWINGCOMPLEXGEOMETRY,ADVANCEDRENDERINGINDUSTRIALDESIGN,PLASTICMOLDDESIGNEXPERTSYSTEM,COMPLEXPHYSICALCAM,ARTISTICDESIGNANDSCULPTUREAUTOMATICPROGRAMMINGSYSTEM,REVERSEENGINEERINGANDCOMPLEXSYSTEMSPHYSICALLINEMEASUREMENTSYSTEMSAHIGHERDEGREEOFINTEGRATIONOFTHESOFTWAREINCLUDESPRO/ENGINEER,UGANDCATIA,ETCSHANGHAIJIAOTONGUNIVERSITY,CHINAWITHFINITEELEMENTANALYSISOFMETALPLASTICFORMINGSYSTEMSANDDIECAD/CAMSYSTEMSBEIJINGBEIHANGHAIERSOFTWARELTDCAXASERIESSOFTWAREJILINGOLDGRIDENGINEERINGRESEARCHCENTEROFTHESTAMPINGDIEMOLDCAD/CAE/CAMSYSTEMS2MOLDDESIGN,ANALYSISANDMANUFACTUREOFTHREEDIMENSIONALTWODIMENSIONALMOLDOFTRADITIONALSTRUCTURALDESIGNCANNOLONGERMEETMODERNTECHNICALREQUIREMENTSOFPRODUCTIONANDINTEGRATIONMOLDDESIGN,ANALYSIS,MANUFACTURINGTHREEDIMENSIONALTECHNOLOGY,PAPERLESSSOFTWAREREQUIREDTOMOLDANEWGENERATIONOFTHREEDIMENSIONAL,INTUITIVESENSETODESIGNTHEMOLD,USINGTHREEDIMENSIONALDIGITALMODELCANBEEASILYUSEDINTHEPRODUCTSTRUCTUREOFCAEANALYSIS,TOOLINGMANUFACTURABILITYEVALUATIONANDCNCMACHINING,FORMINGPROCESSSIMULATIONANDINFORMATIONMANAGEMENTANDSHARINGSUCHASPRO/ENGINEER,UGANDCATIASOFTWARESUCHASWITHPARAMETRIC,FEATUREBASED,ALLRELEVANTCHARACTERISTICS,SOTHATMOLDCONCURRENTENGINEERINGPOSSIBLEINADDITION,CIMATRANCOMPANYMOLDEXPERT,DELCAMSPSMOLDANDHITACHISHIPBUILDINGOFSPACEE/MOLDAREPROFESSIONALINJECTIONMOLD3DDESIGNSOFTWARE,INTERACTIVE3DCAVITY,COREDESIGN,MOLDBASEDESIGNCONFIGURATIONANDTYPICALSTRUCTUREAUSTRALIANCOMPANYMOLDFLOWREALISTICTHREEDIMENSIONALFLOWSIMULATIONSOFTWAREMOLDFLOWADVISERSBEENWIDELYPRAISEDBYUSERSANDAPPLICATIONSCHINAHUAZHONGUNIVERSITYOFSCIENCEHAVEDEVELOPEDSIMILARSOFTWAREHSC3D45FANDZHENGZHOUUNIVERSITY,ZMOLDSOFTWAREFORMANUFACTURING,KNOWLEDGEBASEDINTELLIGENTSOFTWAREFUNCTIONISAMEASUREOFDIEIMPORTANTSIGNOFADVANCEDANDPRACTICALONESUCHASINJECTIONMOLDINGEXPERTSCIMATRONSSOFTWARECANAUTOMATICALLYGENERATEPARTINGDIRECTIONBASEDPARTINGLINEANDPARTINGSURFACE,GENERATEPRODUCTSCORRESPONDINGTOTHECOREANDCAVITY,IMPLEMENTATIONOFALLRELEVANTPARTSMOLD,ANDFORAUTOMATICALLYGENERATEDBOMFORMNCDRILLINGPROCESS,ANDCANINTELLIGENTLYPROCESSPARAMETERSETTING,CALIBRATIONANDOTHERPROCESSINGRESULTS3MOLDSOFTWAREAPPLICATIONS,NETWORKINGTRENDWITHTHEMOLDINTHEENTERPRISECOMPETITION,COOPERATION,PRODUCTIONANDMANAGEMENT,GLOBALIZATION,INTERNATIONALIZATION,ANDTHERAPIDDEVELOPMENTOFCOMPUTERHARDWAREANDSOFTWARETECHNOLOGY,THEINTERNETHASMADEINTHEMOLDINDUSTRY,VIRTUALDESIGN,AGILEMANUFACTURINGTECHNOLOGYBOTHNECESSARYANDPOSSIBLETHEUNITEDSTATESINITS“21STCENTURYMANUFACTURINGENTERPRISESTRATEGY“THATTHEAUTOINDUSTRYBY2006TOACHIEVEAGILEMANUFACTURING/VIRTUALENGINEERINGSOLUTIONSTOAUTOMOTIVEDEVELOPMENTCYCLESHORTENEDFROM40MONTHSTO4MONTHS2MOLDTESTING,PROCESSINGEQUIPMENTTOTHEPRECISE,EFFICIENT,ANDMULTIDIRECTION1MOLDTESTINGEQUIPMENTMORESOPHISTICATED,EFFICIENTSOPHISTICATED,COMPLEX,LARGESCALEMOLDDEVELOPMENT,TESTINGEQUIPMENTHAVEBECOMEINCREASINGLYDEMANDINGPRECISIONMOULDPRECISIONNOWREACHED23M,MOREDOMESTICMANUFACTURERSHAVETOUSEITALY,THEUNITEDSTATES,JAPANANDOTHERCOUNTRIESINTHEHIGHPRECISIONCOORDINATEMEASURINGMACHINE,ANDWITHDIGITALSCANNINGSUCHASDONGFENGMOTORMOULDFACTORYNOTONLYHASTHECAPACITY3250MM3250MMITALIANCOORDINATEMEASURINGMACHINE,ALSOHASADIGITALPHOTOGRAPHYOPTICALSCANNER,THEFIRSTINTHEDOMESTICUSEOFDIGITALPHOTOGRAPHY,OPTICALSCANNINGASAMEANSOFSPATIALTHREEDIMENSIONALACCESSTOINFORMATION,ENABLINGTHEESTABLISHMENTFROMTHEMEASUREMENTOFPHYSICALMODELOUTPUTOFENGINEERINGDRAWINGSTHEWHOLEPROCESSOFMOLDMAKING,REVERSEENGINEERINGASUCCESSFULTECHNOLOGYDEVELOPMENTANDAPPLICATIONSTHISEQUIPMENTINCLUDESECONDGENERATIONBRITISHRENISHAWHIGHSPEEDSCANNERSCYCLONSERIES2CANBEREALIZEDANDCONTACTLASERPROBECOMPLEMENTARYPROBE,LASERSCANNERACCURACYOF005MM,SCANNINGPROBECONTACTACCURACYOF002MMANOTHERGERMANCOMPANYGOMATOSPORTABLESCANNERS,JAPANROLANDSPIX30,PIX4DESKTOPSCANNERANDTHEUNITEDKINGDOMTAYLORHOPSONSTALYSCAN150MULTISENSOR,RESPECTIVELYTHREEDIMENSIONALSCANNERWITHHIGHSPEED,LOWCOSTANDFUNCTIONALCOMPOSITEANDSOON2CNCEDMJAPANSODICKLINEARMOTORSERVODRIVEUSINGTHECOMPANYSAQ325L,AQ550LLSWEDMHAVEDRIVENFASTRESPONSE,TRANSMISSIONANDHIGHPOSITIONINGACCURACY,THEADVANTAGESOFSMALLTHERMALDEFORMATIONSWITZERLANDCHANMIERCOMPANYNCEDMWITHPE3ADAPTIVECONTROL,PCEENERGYCONTROLANDAUTOMATICPROGRAMMINGEXPERTSYSTEMSOTHERSALSOUSEDTHEPOWDERMIXEDEDMMACHININGTECHNOLOGY,MICROFINISHINGPULSEPOWERANDFUZZYCONTROLFCTECHNOLOGIES3HIGHSPEEDMILLINGMACHINEHSMMILLINGISANIMPORTANTMEANSOFCAVITYMOLDTHELOWTEMPERATUREHIGHSPEEDMILLINGWITHTHEWORKPIECE,CUTTINGFORCEISSMALL,SMOOTHPROCESSING,PROCESSINGQUALITY,PROCESSINGEFFICIENCYFORTHEGENERALMILLINGPROCESS5TO10TIMESANDCANPROCESSHARDMATERIALS60HRCANDMANYOTHERADVANTAGESTHUSINTHEMOLDPROCESSINGMOREANDMOREATTENTIONRUISHIKELANGCOMPANYUCP710TYPEFIVEAXISMACHININGCENTER,MACHINETOOLPOSITIONINGACCURACYUPTO8M,HOMEMADECLOSEDLOOPVECTORCONTROLSPINDLEWITHAMAXIMUMSPEED42000R/MINITALYRAMBAUDISHIGHSPEEDMILLING,THEPROCESSINGRANGEOFUPTO2500MM5000MM1800MM,SPEEDUP20500R/MIN,CUTTINGFEEDSPEEDOF20M/MINHSMGENERALLYUSEDLARGE,MEDIUMSIZEDMOLD,SUCHASMOTORCOVERMOLD,DIECASTINGMOLD,LARGEPLASTICSURFACEMACHINING,THESURFACEPRECISIONUPTO001MM译文二快速经济制模技术类型快速经济制模技术与传统的机械加工相比，具有制模周期短、成本低、精度与寿命又能满足生产上的使用要求，是综合经济效益比较显著的一类制造模具的技术，概括起来，有以下几种类别。1表面成型制模技术表面成型制模技术，主要是利用喷涂、电铸、化学腐蚀等新的工艺方法形成型腔表面及精细花纹的一种工艺技术。2浇铸成型制模技术浇铸成型制模技术的共同特点是依样件为基准，浇铸出凸、凹模，型腔表面不需要机械加工。3挤压成型技术（1）冷挤压成型利用铍铜合金的良好的导热性和稳定性，经固熔时效处理后，采用冷挤压制造模具凹模型腔。其特点是制造周期短，型腔精度高IT7级，表面粗糙度RA0025M,强度高，寿命可达50万次，无环境污染。（2）超塑成型制模技术该技术是利用金属材料在细化晶粒、一定成型温度、低变形速率条件下，材料具有最佳超塑性时，将事先制作好的凸模，用较小的力便可挤压出凹模的一种快速经济制模技术。超塑成型材料的典型代表是ZN22AL。4无模多点成形技术无模多点快速成形技术是以CAD/CAM/CAT技术为主要手段，利用计算机控制高度可调基本体群形成上下成形面，代替传统模具对板料进行三维曲面成形的又一现代先进制造技术。此项技术可以随意改变变形路径与受力状态，提高材料的成形极限，可反复成形，以此消除材料内部的残余应力，实现无回弹成形。5凯维朗KEVRON钢带冲裁落料制模技术新型钢带冲裁落料制模技术是一种不同于一般具有凸、凹模结构的钢带模，它是由单刃钢带与特制垫板组成的新型快速经济制模技术。这种模具重量轻，一般只有200KG，加工精度为035050MM，可适合各种黑色和有色金属的05065MM厚的板料加工。寿命可达到525万次，制造成本低。6模具毛坯的快速制造技术实型铸造由于大量的模具是属于单件或小批量生产，模具毛坯的制造质量和周期及成本对最终的模具质量和周期及成本的影响是至关重要的。现代模具毛坯已广泛地采用子实型铸造技术，所谓实型铸造就是利用泡沫塑料聚苯乙烯PS或聚甲基丙烯酸酯PMMA制作代替传统的木模或金属模，造型后不需取出模型，便可以浇铸，泡沫塑料模型的高温液体金属作用下，迅速燃烧气化而消失，金属液取代原来泡沫塑料模型所占有的位置，冷凝后形成铸件。实型铸造在实际应用中有下列几种情况。（1）干砂实型铸造即用55100目的全干没有任何粘结剂的石英砂造型，用EPS或PMMA泡沫塑料制作的模型涂挂021MM厚透气性良好的耐火涂料层，以提高铸件表面光洁度，防止粘砂或塌箱。（2）负压实型铸造负压实型铸造又称V法造型。该技术是使用全干而无粘结剂的石英砂做型砂，用EPS或PMMA泡沫塑料做模型，在塑料薄膜的密封条件下，让整个铸型在负压条件下真空度04067MPA进行液体金属浇铸，铸件凝固后解除负压即可得到表面光洁的铸件。（3）树脂砂实型铸造利用树脂砂做型砂，用EPS或PMMA泡沫塑料做模型，在常温、常压下进行液体金属浇铸而制取铸件。利用实型铸造的技术制造模具毛坯具有尺寸精度高ISO9级，加工余量小一般在5MM左右，不需要拔模斜度，不需要制型芯与泥芯撑，节省金属材料，节省做木模型的木材，制造周期短，成本低。该技术适合大型、复杂、单件模具毛坯的生产。陶瓷型精铸、失蜡精铸等技术在提高模具毛坯精度、降低加工工时、缩短制造周期、降低成本等方面也显示出其特有的优越性。7其它方面技术为了简化模具的结构设计，降低模具成本，缩短模具制造周期，在国内外也先后出现了一些其它方面新技术的应用，如快换模架、冲压单元、刃口堆焊、镶块铸造、氮气弹簧等。外文原文FASTECONOMICALPATTERNMAKINGSTECHNOLOGIESTYPETHEFASTECONOMICALPATTERNMAKINGTECHNOLOGYANDTHETRADITIONALMACHINEFINISHINGCOMPARES,HASTHEPATTERNMAKINGCYCLESHORT,THECOSTISLOW,THEPRECISIONANDTHELIFECANSATISFYINTHEPRODUCTIONTHEOPERATIONREQUIREMENTS,ISSYNTHESIZESANECONOMICEFFICIENCYQUITEREMARKABLEKINDTOMAKETHEMOLDTHETECHNOLOGY,SUMMARIZESBELOW,HASSEVERALTYPESTOLEAVE1SURFACESTAKESHAPETHEPATTERNMAKINGTECHNOLOGYTHESURFACETAKESSHAPETHEPATTERNMAKINGTECHNOLOGY,MAINLYISTHEUSESPURTSSPREADS,THEELECTROLYTICCASTING,CHEMISTRYCORROSIONANDSOONTHENEWTECHNIQUEFORMATIONCAVITYSURFACEANDTHEFINEPATTERNONEKINDOFCRAFTTECHNOLOGY2SPRINKLETOCASTINTOTHETYPESYSTEMMOLDTECHNIQUESPRINKLINGTOCASTINTOTECHNICALANDCOMMONCHARACTERISTICSOFTHETYPESYSTEMMOLDISACCORDINGTOTHEKINDPIECEFORBASIS,SPRINKLEACONVEXANDCAVEMOLD,ASURFACEDONOTNEEDTHEMACHINETOPROCESS3EXTRUSIONSTAKESSHAPETHETECHNOLOGY1COLDEXTRUSIONSTAKESSHAPEUSINGTHEBERYLLIUIMCOPPERALLOYGOODTHERMALCONDUCTIVITYANDTHESTABILITY,AFTERTHESOLIDMELTAGINGTREATMENTOFMETAL,USETHESWAGINGPRESSURETOMAKETHEMOLDCONCAVEMODELCAVITYITSCHARACTERISTICISMAKESTHECYCLESHORT,THECAVITYPRECISIONISHIGHTHEIT7LEVEL,SURFACEROUGHNESSRA0025MUM,THEINTENSITYISHIGH,THELIFEMAYREACH500,000TIMES,DOESNOTHAVETHEENVIRONMENTALPOLLUTION2ULTRAMODELSTAKESSHAPETHEPATTERNMAKINGTECHNOLOGYTHISTECHNOLOGYISUSINGTHEMETALMATERIALINTHETHINCRYSTALGRAIN,CERTAINLYTAKESSHAPETHETEMPERATURE,UNDERTHELOWDISTORTIONSPEEDCONDITION,WHENTHEMATERIALHASTHEBESTSUPERPLASTICITY,TOESATTENDTOCARRYOUTRAISEDMOLDWHICHTHEINITIATIVEFINISHES,THENMAYEXTRUDETHECONCAVEMOLDWITHTHESMALLSTRENGTHONEKINDOFFASTECONOMICALPATTERNMAKINGTECHNOLOGYULTRAMODELSTAKESSHAPEMATERIALTYPICALREPRESENTATIVEISZN22AL4DOESNOTHAVETHEMOLDMULTISPOTSFORMINGTECHNOLOGYDOESNOTHAVETHEMOLDMULTISPOTSFASTFORMINGTECHNOLOGYISBYCAD/CAM/CATTHETECHNOLOGYISTHEMAINMETHODABOUT,MAYADJUSTTHEBASEMAINBODYGROUPHIGHLYUSINGTHECOMPUTERCONTROLTOFORMFORMSTHESURFACE,REPLACESTHETRADITIONALMOLDTOCARRYONTHETHREEDIMENSIONALCURVEDSURFACEFORMINGTOTHESHEETANMODERNADVANCEDMANUFACTURETECHNOLOGYTHISTECHNOLOGYMAYCHANGETHEDISTORTIONWAYANDTHESTRESSFULCONDITIONATWILL,ENHANCESTHEMATERIALTHEFORMEDLIMIT,MAYFORMREPEATEDLY,BYTHISELIMINATIONMATERIALINTERIORREMAININGSTRESS,THEREALIZATIONDOESNOTHAVETHESNAPPINGBACKFORMING5TRIUMPHANTUYGURBRIGHTSTEELBELTBLANKINGFALLSTHEMATERIALPATTERNMAKINGTECHNOLOGYTHENEWSTEELBELTBLANKINGFALLSTHEMATERIALPATTERNMAKINGTECHNOLOGYISONEKINDISDIFFERENTWITHHASRAISED,THECONCAVEMOLDSTRUCTURESTEELBELTMOLDGENERALLY,ITISWITHSPECIALLYMAKESTHENEWFASTECONOMICALPATTERNMAKINGTECHNOLOGYBYTHESINGLEEDGESTEELBELTWHICHTHEBACKINGSTRIPISCOMPOSEDTHISKINDOFMOLDWEIGHTISLIGHT,ONLYTHEN200KG,THEPROCESSINGPRECISIONFOR035050MM,MAYSUITEACHKINDOFBLACKANDTHENONFERROUSMETAL05065MMTHICKSHEETPROCESSINGGENERALLYTHELIFEMAYACHIEVE525TENTHOUSAND,THEPRODUCTIONCOSTISLOW6MOLDSSEMIFINISHEDMATERIALSFASTMANUFACTURETECHNOLOGYSOLIDCASTINGBECAUSETHEMASSIVEMOLDSAREBELONGTOTHESINGLEUNITORTHEPRODUCTION,THEMOLDSEMIFINISHEDMATERIALSMANUFACTUREQUALITYANDTHECYCLEANDTHECOSTTOTHEFINALMOLDQUALITYANDCYCLICALANDTHECOSTINFLUENCEAREVERYIMPORTANTTHEMODERNMOLDSEMIFINISHEDMATERIALSWIDELYHAVEUSEDTHESEEDSCASTINGTECHNOLOGY,THESOCALLEDSOLIDCASTINGISPOLYSTYRENEPSEITHERPOLYMETHACRYLATEPMMAMANUFACTURESUSINGTHEFOAMPLASTICSREPLACESTRADITIONALTHEWOODENMOLDORTHEMETALPATTERN,AFTERTHEMODELLINGDOESNOTHAVETOTAKEOUTTHEMODEL,THENMAYTHECASTING,UNDERTHEFOAMPLASTICSMODELHIGHTEMPERATURELIQUIDMETALFUNCTION,DEFLAGRATETHEGASIFICATIONBUTTOVANISH,THEMOLTENMETALSUBSTITUTIONORIGINALFOAMPLASTICSMODELHOLDSTHEPOSITION,AFTERTHECONDENSATIONFORMSTHECASTINGTHESOLIDCASTINGHASTHEFOLLOWINGSEVERALKINDOFSITUATIONSINTHEPRACTICALAPPLICATION1DRYSANDSSOLIDCASTINGNAMELYALLDOESNOTDOANYCEMENTINGAGENTQUARTZSANDMODELLINGWITH55100GOAL,SPREADSWITHEPSORTHEPMMAFOAMPLASTICSMANUFACTUREMODELHANGSTHE021MMTHICKPERMEABILITYGOODFIREPROOFCOATINGLEVEL,BYENHANCESTHECASTINGSUPERFICIALLYATTRACTIVEFINENESS,PREVENTEDTHEFATSANDORCOLLAPSESTHEBOX2NEGATIVECOMPACTIONSCASTINGTHENEGATIVECOMPACTIONCASTINGCALLSVLAWMODELLINGTHISTECHNOLOGYISTHEUSEALLDOESBUTDOESNOTHAVETHECEMENTINGAGENTTHEQUARTZSANDTOMAKETHEMOLDINGSAND,MAKESTHEMODELWITHEPSORTHEPMM