欢迎来到人人文库网! | 帮助中心 人人文库renrendoc.com美如初恋!
人人文库网
首页 人人文库网 > 资源分类 > DOC文档下载

外文翻译--干式薄壁套柴油机机体缸孔及缸套孔加工的探讨.doc

  • 资源大小:117.00KB        全文页数:28页
  • 资源格式: DOC        下载权限:游客/注册会员/VIP会员    下载费用:5
游客快捷下载 游客一键下载
会员登录下载
下载资源需要5

邮箱/手机号:
您支付成功后,系统会自动为您创建此邮箱/手机号的账号,密码跟您输入的邮箱/手机号一致,以方便您下次登录下载和查看订单。注:支付完成后需要自己下载文件,并不会自动发送文件哦!

支付方式: 微信支付    支付宝   
验证码:   换一换

友情提示
2、本站资源不支持迅雷下载,请使用浏览器直接下载(不支持QQ浏览器)
3、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰   

外文翻译--干式薄壁套柴油机机体缸孔及缸套孔加工的探讨.doc

附录专业英语翻译STUDYOFDRYTHINWALLCYLINDERLINERFORDIESELENGINECYLINDERBLOCKBOREANDCYLINDERBOREMACHININGFIRSTCHAPTEROUTLINE11AIRCYLINDERSATTRITIONJUDGESTHEENGINEWHETHERNEEDSTHEOVERHAUL,MAINLYISDECIDEDBYTHEAIRCYLINDERWEARINGCAPACITY,THEAIRCYLINDERAIRRAMGROUPATTRITIONHASHASTHEGRINDINGCOMPOUNDTOWEAR,THEMOLECULAR□MACHINERYWEARS,CORRODESTHECHARACTERISTICWHICHTHEMACHINERYWEARSINAIRCYLINDERWORKINGCONDITIONBADTEMPERATUREHIGH,PRESSUREHIGH,IFOILFEEDINSUFFICIENCYORLUBRICATIONCONDITIONBAD,ISEASYTOFORMTHEBOUNDARYFRICTION,CAUSESDONOTSELECTHASTHEMETALLICCONTACT,FORMSTHEADHERENCYTHEHOTADHERENCYREPAIRSAVEHICLETHEINITIALPERIODOPERATIONALPHASEINNEWCHEHEDATOBEEASYTOPRODUCEINORDERTORESISTTHEHOTADHERENCY,MUSTENHANCETHECOMPONENTSTHEMANUFACTUREANDTHEASSEMBLYQUALITYANDTHELUBRICATINGOILQUALITYTHECYLINDERBODYIFCOORDINATESTHEPISTONCURL,INTHEATTRITIONQUESTIONISANINALIENABLEWHOLE,TWOHASDENSECUTSRELATIONGENERALLYBESIDESSPECIALMATERIAL,INTWOKINDOFMUTUALCOMPOUNDINGINGREDIENTSONEKIND,IFWEARINGCAPACITYSMALLSPEECH,THENANOTHERKINDOFMATERIALWEARINGCAPACITYALSOREDUCESALONGWITHITTIMETHEENGINECYLINDERBODYMANUFACTUREPRECISIONANDTHEASSEMBLYSHAPEPOSITIONCOMMONDIFFERENCEISREMARKABLETOTHECYLINDERWALLATTRITIONINFLUENCEINTHEMANUFACTUREANDTHEOVERHAULARETHESTRICTCONTROLANDTHEINSPECTIONAIRCYLINDERANDTHEMAINAXLEALTARHOLESPOOLTHREADVERTICALITY,THEAIRCYLINDERHOLETOTHEMAINBEARINGHOLESITE,HASTHEGREATSIGNIFICANCETOTHEENGINESERVICELIFETHECYLINDERWALLATTRITIONEXPERIMENTPROVEDTHAT,WHENVERTICALITYERRORINCREASESTOABOVE010MMWHENBY005MM,THECYLINDERWALLWEARSCORRESPONDINGLYINCREASES3040;CYLINDERHOLECOLUMNERRORACHIEVEDWHEN004MM,AFTEREXERCISES20,000KILOMETERS,ACYLINDERHOLECOLUMNERRORINCREASESTO010MM012MMWHENANINITIALCOLUMNERRORISSMALLERTHAN0025MM,AFTERMOVES20,000KILOMETERS,ACYLINDERHOLECOLUMNERRORONLYINCREASES005MM006MM12CYLINDERWALLSSURFACESAPPEARANCETHECYLINDERWALLFORMSTHEOVERLAPPINGSHAPEGROOVEBYTOIMPROVERUBSTHEVICELUBRICATIONCONDITIONISREDUCESTHEATTRITIONTHEIMPORTANTLINKEVENGOESAGAINSTTHENETGRAINHONINGTOBEPOSSIBLETOCAUSETHECYLINDERWALLSURFACETOPRESENTTHECLEARLYDISCERNIBLEOVERLAPPINGNETGRAINTRENCH,ANDGROOVECRESTHONINGHASTHEMICROSCOPICPLANE,CAUSESTHEFLATTOPPINGAREATOACCOUNTFORTHETOTALAREAABOUT60,LIKETHISMAYENHANCETHECYLINDERWALLTHEOILSTORAGEABILITY,CAUSESTHECYLINDERWALLTHEWEARINGCAPACITYTOCOMPARETHENONFLATTOPPINGNETWORKGRAINHONINGTHECYLINDERTUBETOREDUCEABOUT78THEUSEINDICATEDTHAT,CARRIESONTHEFLATTOPTHENETGRAINHONING,AFTERTHEENGINEEXERCISES100,000KILOMETERS,STILLOBVIOUSLYNETGRAINTRENCHTHECYLINDERWALLPROCESSINGQUALITYTOITSATTRITIONINFLUENCEREMARKABLE,THEROUGHSURFACEISEASYTODESTROYTHELUBRICANTFILMCONTINUITY;ISNOTEASYINTHESMOOTHSURFACETOPRESERVETHELUBRICATINGOILUNDERTHECERTAINWORKINGCONDITION,THEAIRCYLINDERWEARINGCAPACITYIFISROUGHHASTHECERTAINRELATIONS,THEREFOREMUSTREASONABLYCHOOSETHESURFACEROUGHNESSTHEMATERIALINDICATED,FORPREVENTEDPULLSTHECYLINDER,BYALLMEANSMUSTTHEMAINTENANCELUBRICANTFILM,THECYLINDERWALLANDTHEPISTONCURLSURFACEROUGHNESSMUSTFULLYCONTROLTHEJAPANESEMATERIALBELIEVED,CYLINDERWALLSURFACEROUGHNESSTAKE03MUMASSUITABLE,ITSSUPERFICIALHONINGTRACESHOULDFORMTHEOILSTORAGESURFACETHEFRENCHMATERIALBELIEVED,REGARDINGTHELINEARPRECISIONWORK,SHOULDUSE05125MUMTHEROUGHNESSREGARDINGINDUSTRYINAPPLICATIONMODELCASTIRON,THECYLINDERWALLSURFACEDONOTHAVETOOTOBESMOOTH,OTHERWISECANHINDERTOWEARIN;BUTTHETOOROUGHSURFACECANCAUSETHEATTRITIONINCREASETHEREFOREUSUALLYTAKESBETWEEN0510MUM,AFTERWEARSIN,SURFACEROUGHNESSBETWEEN012015MUMTHEMODERNMOTORCARENGINETAKESINTHECYLINDERTUBEEXTREMELYINTHEENHANCEMENTWEARRESISTINGLIFEASPECTTHEGRINDINGCOMPOUNDATTRITIONEXPERIMENTALTABLEBRIGHT,THECYLINDERWALLTOTALWEARINGCAPACITYONEABOUTTHEHALFISTHEGRINDINGCOMPOUNDWEARSTOELIMINATESENHANCESTHEENGINETHEFILTRATIONSYSTEMFUNCTIONOUTSIDE,INTHEASSEMBLYLINESHIPSOUTTHEENGINEUSUALLYHASTHEMASSIVEGRINDINGCOMPOUNDGRANULE,ISWEARINGINTHEINITIALPERIOD,CAUSESTHEATTRITIONSHARPGROWTHTHEMATERIALINDICATEDTHAT,THEENGINEINSTALLSTOTHEAUTOMOBILEON,ATFIRSTIN100200KILOMETERTRAVELLINGSCHEDULE,INLUBRICATINGOILCONTAINSTHESILICONQUANTITYTOBEMOSTTHEREFOREDOESWELLTHEENGINE清洁度,TOGUARANTEESTHEENGINEQUALITY,THERELIABILITYALLHASTHESIGNIFICANCESIGNIFICANCE13CYLINDERBODIESDISTORTIONSTHECYLINDERBODYPOSSIBLYAPPEARSVARIOUSDISTORTIONINTHEUSE,BRINGSEXTREMELYBADLYTOTHEENGINESERVICELIFEINFLUENCETHECYLINDERBODYDISTORTSTHEREASONUSUALLYHASTHREENAMELYINTERNALSTRESS,OUTSIDELOADANDTEMPERATUREWASMADTHECYLINDERBODYHASBEENMAKINGINTHEREGULATIONSHANGNENGGUARANTEEDTHECORRECTPOSITIONANDTHESHAPEBETWEENTHEMATINGSURFACEBUTPASSESTHROUGHPERIODOFTIMEAFTERMAKINGONTHEPRODUCTIONDOESNOTCONFORMTOTHESPECIFICATIONTODISTORTGREATLY,ITSMAINREASONISBECAUSEHASNOTCARRIEDONEFFECTIVEACTUALEFFECTPROCESSINGTOTHECASTINGORTHEACTUALEFFECTPROCESSESISIMPROPERINADDITION,ISMADTHECYLINDERBODYAFTERTHEROUGHMACHININGFORCECUTTING,ALSOCANHAVETHEPROCESSINGINTERNALSTRESS,ALSOMUSTINCARRYONATIMEOFACTUALEFFECTPROCESSING,OTHERWISEWILLBEABLETOHAVETHEDISTORTIONINTHELATERUSEPROCESSINRECENTYEARSININTHEOVERSEASRESEARCHCOMPONENTSDISTORTIONMECHANISMLITERATUREPROPOSEDSOMEVIEWS,NAMELYTHOUGHTHASTHEDISTORTIONINTRINSICREASONISTHEMATERIALCRYSTALLIZATIONFLAW,LIKEVACANCY,DISLOCATION,ALONGCRYSTALGRAINFLAW,HOLEANDOTHERSUNDRYGOODSANDSOONESPECIALLYMAYBETHEDISLOCATIONANDITSTHEPROLIFERATIONARETHEMAINREASONWHICHTHEINFLUENCEDISTORTS14AIRCYLINDERSANDPISTONTOLERANCECLEARANCESTHEAIRCYLINDERANDTHEPISTONTOLERANCECLEARANCEWITHIMPORTANTLYAFFECTSTOTHEENGINESERVICELIFE,ITISTHEDESIGN,THEMANUFACTUREWITHUSESONEOFENGINEIMPORTANTPARAMETERSBELIEVEDGENERALLYTHAT,THEASSEMBLYINITIALGAPGATHERSTHERUNNINGINGAPTOBESMALLER,COORDINATESTHEVICELIFETOBELONGERTHESMALLINITIALGAPONLYTHENTHROUGHTHEENHANCEMENTPROCESSINGPRECISION,REDUCESTHESHAPEPOSITIONCOMMONDIFFERENCE,THEIMPROVEMENTPISTONSTRUCTUREANDTHEMATERIALCANACHIEVEGAPEXCESSIVELYSMALL,ISNOTEASYTOGUARANTEETHELUBRICANTFILM,INCREASEDTHEATTRITION,EVENPULLSTHECYLINDERGAPOVERSIZED,THEENGINEEXPLOSIONPRESSUREDROPS,THEPISTONPINESPACIOUS,LATERALSWINGSENLARGES,ISEASYTOCAUSEKNOCKS

注意事项

本文(外文翻译--干式薄壁套柴油机机体缸孔及缸套孔加工的探讨.doc)为本站会员(英文资料库)主动上传,人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知人人文库网(发送邮件至[email protected]或直接QQ联系客服),我们立即给予删除!

温馨提示:如果因为网速或其他原因下载失败请重新下载,重复下载不扣分。

关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服客服 - 联系我们

网站客服QQ:2846424093    人人文库上传用户QQ群:460291265   

[email protected] 2016-2018  renrendoc.com 网站版权所有   南天在线技术支持

经营许可证编号:苏ICP备12009002号-5