《模具专业英语》-Unit 3 The Injection Molding and Machine

DialogueMillie:Welcometoourcompany.I’llshowyouaroundandexplaintheoperationsaswegoalong.Sandy:That’llbemosthelpfulMillie:Thisisourofficebuilding.WehavealltheadministrativedepartmentshereDownthereisthesalessection,advertisingsectionandproductionareas.Sandy:Howmuchdoyouspendonadvertisingdiesandmoldseveryyear?下一页返回DialogueMillie:About5%ofthesalesrevenue.Thisway,please.I’dlikeyoutoseeourshowroom.Almostallmoldsofourcompany’sdiescanbeseeninthisroom.Sandy:What’sthatbuildingoppositeus?Millie:That’sourwarehouse.Wekeepastockjusttosatisfytheurgentneedsofourcustomers.Sandy:IfIplacedanordernow,howlongwoulditbebeforeIcouldgetdelivery?Millie:Itwouldlargelydependonthevolumeandtheitemsyouwant上一页返回TextTheInjectionMoldingandMachineIntheinjectionmoldingprocess,thermoplasticresinsaremeltedandthemeltisforced(injected)intoamold.Afterthismeltcoolsuntilthepolymersolidifies,thepartsareremoved(ejected)fromthemold.Oneofthemostcommonplasticsmanufacturingprocesses,injectionmoldingcanproducepartsweighingaslittleasfractionofagramorasmuchas150kgThefiveimportantM.sintheinjectionmoldingprocessarethe(1)Injectionmoldingmachine;(2)Mold;(3)Material;(4)Method;(5)Man(i.e,operator)下一页返回TextTheInjectionMoldingandMachine1.TheBasicComponentofInjectionMoldingMachinesAsillustratedinFig3-1,injectionmoldingmachineshavethreemajorcomponents:1)injectionunit,2)clampingunit,and3)controlsTheinjectionunitplasticates(melts)andinjectsthepolymericmaterialintothemold.Theclampingunitsupportstothemoldandprovidesthemechanismsforopeningandclosingofthemoldandforejectionofmoldedparts上一页下一页返回TextTheInjectionMoldingandMachine2TheInjectionMoldingProcessTheinjectionmoldingprocessconsistsofplasticatingtheresin(Fig3-2(a)),injectingthemoltenpolymerintothemold(Fig3-2(b)),packingmoremeltintothemoldtocompensateforshrinkage,maintainingaholdingpressureonthemeltuntilthegatesolidifies,andcoolingthepartinpreparationforremovalfromthemold(Fig3-2(c))(1)FillingStage;(2)PackingandHoldingStages;(3)CoolingPhase;(4)Plastication;(5)StartingUptheInjectionMoldingMachine上一页下一页返回TextTheInjectionMoldingandMachine3SafetyConsiderations(1)Safetyglassesshouldbewornatalltimesduringtheexperiment(2)Thesafetyshieldmustbeinpositionwhenmeltispurged(airshots)fromthebarrel(3)Donotplacehandsorotherforeignobjects(sticks,tools)inthehopperareawhenthemachineisoperating上一页下一页返回TextTheInjectionMoldingandMachine(4)Donottamperwithanyofthemachine’ssafetydevices(5)Neverreachover,under,oraroundanymachineguards(6)Donotoperatethemachineinthe“automatic”mode(7)Wearheat-resistantgloveswhenremovingpartsfromthemold(8)Donotoperatethemachineifamemberofthegroupisbehindthemachine上一页下一页返回TextTheInjectionMoldingandMachineNewWordsandExpressionsinjectionn注射；注入；喷入thermoplasticadj热塑性的resinn合成树脂polymern<化>聚合物(体)solidifiesvt&vi(使)成为固体；(使)变硬clampvt&vi（用夹具）夹紧；夹住；固定ejectionn喷射compensatevt&vi补偿,弥补上一页下一页返回TextTheInjectionMoldingandMachineShrinkagen缩水Plasticationn增塑；塑炼；塑化作用Barreln滚筒Crackn裂痕Heat-resistantadj耐热的,抗热的

上一页下一页返回TextTheInjectionMoldingandMachineinjectionmoldingmachine注塑(射)机thermoplasticresin热塑性树脂injectionunit注射系统clampingunit合模系统hydraulicsystem液压系统fillingstage填充阶段packingandholdingstage保压预塑阶段coolingphase冷却阶段startinguptheinjectionmoldingmachine开模上一页返回SupplementaryReadingSinkMarksonEntireMoldedComponent下一页返回SupplementaryReadingSinkMarksonEntireMoldedComponent上一页下一页返回SupplementaryReadingSinkMarksonEntireMoldedComponentNewWordsandExpressionsnozzlen喷嘴spruen主浇道runnern分流道gaten浇口resintemperature树脂温度dietemperature模具温度injectionspeed注射速度V-Pswitching止流阀dwellingpressure保压压力上一页下一页返回SupplementaryReadingSinkMarksonEntireMoldedComponentdwellingtime保压时间backpressure背压screwspeed螺杆转速amountofcushioning缓冲量dieclampingpressure合模压力coolingcircuit冷却循环sinkmarks缺陷materialthickness制件厚度上一页返回TranslatingSkill(3):

词义的选择和引申Ⅰ词义的选择1根据词类选择词义英语有些词在作为不同词类时有不同的意义，因此，选择词义时，首先要判明一个词在原句中属哪个词类，再进一步确定其词义。请看下面的例子：（1）Likechargesrepel,unlikechargesattract

同性电荷相斥，异性电荷相吸。（形容词，作“相同的”解）（2）Inthesunbeampassingthroughthewindowtherearefinegrainsofdustshininglikegold

在射入窗内的阳光里，细微的尘埃像金子一般闪闪发亮。（介词，作“像……一样”解）下一页返回TranslatingSkill(3):

词义的选择和引申（3）Itistheatomsthatmakeupiron,water,oxygenandthelike

正是原子构成了铁、水、氧等类物质。（名词，作“相同之物”解）（4）Helikesmakingexperimentsinchemistry他喜欢做化学实验。（动词，作“喜欢”解）2从词的联立关系和上下文确定词义对初学翻译的人来说，遇到英语多义词时必须结合上下文反复推敲，切忌望文生义，不求甚解。尤其是遇到多义常用词时，不要自以为对它们已很熟悉，想当然地把自己懂得的词义放到译文中去。须知，译者自以为懂了而实际又不懂的地方，往往最容易译错。上一页下一页返回TranslatingSkill(3):

词义的选择和引申（1）Thesubjectboastsofanextensiveliterature\[误\]这门学科以大量文学作品感到骄傲。\[正\]这门学科的文献极为丰富。（2）Hesatisfiedmethathecoulddotheworkwel