简介：HitachiInformationSystemsstarteduptheRFIDbusinessfrom2002andprovidesvarietiessolutions,especiallydevotedtheenergiesontheresearchofmetallictagandthedevelopmentofitsappliedarea.Themetallictagwasdevelopedtowithstandtheharshenvironmentlikevibration,shock,high-pressurewaterinjection,highvoltage,andultravioletirradiation.Becausethemetallictagthatdifferentwiththemetaltagcreatedbefore,isprotectedbythemetallicmaterialthatmadeitverystrongtobeusedintheenvironmentlistedabove.June,2006,ourcompanysuccessfullydevelopedthemetallictagwitharmor-cladstainlesssteel.Therefore,comparingwiththeresintag,themetallictagwithremarkablemechanicalstrengthwassufficientattentiontowithstandtheoutdooruse,eventoresistUV.Bythemethodofscrewfixing,rivettightening,solderingornailstriking,theinstallationprocedurecanbecompleted.Becausethevariousinstallationmethodsweresupported,themetallictagcanbeappliedtomanyindustryareas.Themanagementmarketslikeconstructionmachinery,substationequipment,molds,tools,andmetalliccontainerthatneedtheverystrongtagcanbedeveloped,becauseofthemetallictag.Inthisthesis,itwillbedescribedabouttheresearchbackgroundandtheresearchresultsofmetallictag,thecommercializedmetallictag’sfeaturesandapplicationfields,aswellastheresearchsubjectsinthefutureandrecentdevelopmentsituation.

简介：Improvingefficiencyinrollgrindingprocessisacriticalissueinthesteelmill.Eachrollhastobegrindedtoawell-definedprofileandthentobemeasuredforqualitycheck.However,thesurfaceconditionsareinspectedbyusingdifferenton-lineinspectionprobesequippedonthegrinder.Therollnumberisauniqueinformationwhichcanbeusedtomergewithahugeamountofmeasurementdatasothattheconditionofeachrollisfullymonitored.Oneofthekeyfactorsthathindertheefficiencyinsuchprocessistheerrorsandtimeconsumptionduetohumanintervention.Inordertomitigatetheseissuesandtorealizethefullyautomaticgrindingprocess,radiofrequencyidentificationtechnology(RFID)couldbeasolutionandhasbeendevelopedinthispaper.ItiswellknownthatwhenanRFIDtagisplaceddirectlyuponametallicobject,intheabsenceofagaporasubstrate,itfunctionsratherpoorlyandevenbecomestotallydysfunctional.Thislimitation,inturn,posesarealbarriertotheuseoftheRFIDonmetallicobjects.ThispaperproposesaminiatureRFIDtagantennadesignforapplicationonrollnumberidentification.TheexperimentaltestsshowthatthemaximumreadrangeoftheproposedRFIDtagplacedonarollisapproximately1.5mandtheoverallsizeisonly32×18×3.2mm~3.AnRFIDsystemforrollnumberidentificationwasusedinarollshopandseveralremarkableimprovementswereachieved,includingthecompletelyautomaticgrindingprocessandtheerror-freeidentification,aswellasthehighpersonnelsafetyoperation.

简介：研制了一种以玻璃粉作为粘结相的低温烧结型银基浆料，并应用于集成电路半导体芯片贴装工艺。重点考察了半导体芯片与氧化铝陶瓷基座组装后的附着力，以研究浆料中银粉、玻璃粉和有机载体的含量以及芯片的净化处理工艺、烧结工艺对组装件剪切力和温度循环后剪切力的影响。结果表明：采用有机溶剂和皂化除油，银粉和玻璃粉质量比为7：3，有机载体和固体相质量比为1：9，在430℃烧结，保温时间在20～25min时，能获得最大剪切力。