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不锈钢焊接方面有关论文范文数据库,与文一定要有摘要吗山东相关论文查重免费
本论文是一篇不锈钢焊接方面有关论文查重免费,关于文一定要有摘要吗山东相关在职毕业论文范文。免费优秀的关于不锈钢焊接及管理系统及可靠性方面论文范文资料,适合不锈钢焊接论文写作的大学硕士及本科毕业论文开题报告范文和学术职称论文参考文献下载。
加热温度过高而导致组织粗大耐腐蚀性下,而固溶处理却不能有效提高其耐腐蚀性.关 键 词:晶间腐蚀,贫铬理论,敏化处理,固溶处理
Abstract:①Thetopichadfirstdeterminedtheaustenitestainlesssteelweldjointthecorrosionratechangeslowesttimeforboils1.5hinthesulfuricacid-ironsulfate,sulfateofironandhaddiscoveredtheaustenitestainlesssteelweldjointcorrosionratelengthensalongwiththecorrosiontimedrops,alsothedropscopeismoreandmoresmall,untiltendstosteadily.②Simultaneouslystudieduseshascarriedontotheaustenitestainlesssteelweldjointpartiallystressheattreatmentcraftandsoongoestothestressandpletelygoesto,finallydiscovered,thepartwenttothestresstobepossibleremarkablytoenhancetheattachmentAnti-corrosiveperformance,butpletelywenttothestressbecauseoftoheatupthehyperpyrexiatocauseundertheanizationthickinoxidizability,butthesolidsolutiontreatmentactuallycouldnoteffectivelyenhanceitsAnti-corrosiveperformance.
Keywords:intercrystallinecorrosion,poorchromiumtheory/sensitizationprocessing,meltingplacehollowpieceofjade
参考翻译:(SuggestedAbstract)
Abstract:Thisfindingofthisstudyascertainsthat1.5histheslowestcorrosionrateconversionoftheaustenitestainlesssteelweldjointinboilingsulfuricacid-sulfateofiron,andthatthecorrosionrateoftheaustenitestainlesssteelweldjointgoesdownovertimeandthescopeofgoingdownisgettingsmallerandsmalleruntilit'salmoststeady.Someheattreatmenttechnologies,suchasthespotannealingandpleteannealingoftheaustenitestainlesssteelweldjoint,arestudiedandthefindingprovesthatthecorrosionresistanceoftheweldjointcouldberemarkablyincreasedbylocalannealing,whilepleteannealingwouldresultinthedecreaseofcorrosionresistanceduetothecoarsemicrostructurecausedbyoverheating,andsolutionheattreatmentcouldnoteffectivelyincreaseitscorrosionresistance.
Keywords:intercrystallinecorrosion,chromium-depletedtheory,sensitizationprocess,solutionheattreatment
样例四:
回转塔式起重机实验台设计
摘 要:高速大吨位起重机大量用于制造业,港口运输业和建筑业,目前是以人工操作为主,自动化程度低.为了有效解决实现起重机自动化的关键技术问题,建立回转塔式起重机实验台,用于研究起重机动力学和控制策略的有效性.回转塔式起重机实验台由回转机构和变幅机构组成,模拟回转塔式起重机的变幅运动和回转运动.本文确定回转塔式起重机试验台的总体结构方案,确定变幅运动和回转运动的传动方案,设计和计算变幅运动的驱动部分,传动部分,起重臂,平衡臂,塔冒和小车.这一试验台的建立对实现起重机自动化,提高工作效率,安全性,可靠性有着重要的意义和价值.
本篇论文来源:http://www.sxsky.net/xie/070239508.html
关 键 词:回转塔式起重机,伺服系统,同步带传动
Abstract:①Highspeedandlargetonnagecranesarewidelyusedinmanufacturing,harbortransportandbuildingconstruction,butmostofthecranesarerunbymanualoperationandtheautomationextentofthemisverylow.②Tosolvethekeytechniquetorealizecraneautomation,asetofexperimentsystemforrotarytowercanesisbuilt,inwhuchthecorrectnessofthedynamicsmodelsofcranesandthevalidityoftheproposedcontrolstrategiesareprovenbytheexperimentalsystem.③Theexperimentsystemisconsistedoftransferringmachineandrotarymachine,tosimulatethemotionoftransferringmachineandrotarymachine.④Thispaperdecideswholeframeschemeandthedrivingschemesoftransferringmotionandrotarymotion.⑤Thepaperdesignedandcalculatesthedrivingsectionandtransferringsection,hoistingandbalancingarms,towercapanddollyoftherotarytowercraneexperimentalsystem.⑥Thesettingupofthesystemisofpracticeimportanceforrealizingcraneautomationandimprovingefficiency,securityandreliabilityofcraneoperation.⑦Theexpiration.⑧Theexperimentalsystemmainlysimulatesthetransversalandrotarymotionsofrotarytowercranes.
Keywords:rotarytowercrane,servosystem,synchronizingbelttransmission
参考翻译:(SuggestedAbstract)
Abstract:High-speedandbig-tonnagecranesarewidelyusedinmanufacturing,harbortransportationandconstruction,butmostofthecranesareoperatedmanuallywithlowautomatization.Tocopewiththekeytechnologyandrealizetheautomation,anexperimentalsystemforrotarytowercranesissetupsothatthevalidityofcranedynamicsandproposedcontrolstrategiescouldbeexperimented.Theexperimentalsystemconsistsofarotarymechanismandaluffingmechanismandisusedforthesimulationofluffingmotionandrotatingmotion.Notonlytheoverallschemefortheframeofthissystemisdetermined,butalsotheschemefortransmissionofluffingmotionandrotatingmotionisdone.Inaddition,thedesignandcalculationsaredonefordriving,transmitting,hoisting,balancingjib,towercapanddollyofluffingmotion.Theerectionofthesystemisvaluableandsignificantforthecraneinitsautomatization,efficiency,safetyandreliability.
Keywords:rotarytowercrane,servosystem,synchronizingbelttransmission
样例五:
高校学生收费管理系统的设计与实现
摘 要:针对当前高校学生收费的管理情况,介绍了高校学生收费管理系统的设计与实现.高校学生收费管理系统旨在解决当前学校中所面临的的学生缴费困难,收费流程复杂和查询系统困难等问题.主要采用了SQLServer2000数据库和Delphi开发技术,设计了学校信息管理,学生信息管理,收费标准管理,财务管理,系统管理和查询7大功能模块,实现了学生应收,实收和欠收款的处理,查询,统计,数据导入/导出和维护等功能.
关 键 词:高校学生收费管理系统,批量操作,收费业务,数据导入/导出
参考翻译:(SuggestedAbstract)
Abstract:Thethesiselaboratesonthedesignandapplicationofcolleges
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