简介：2009年8月20日，中国有色金属工业协会组织专家对中国有色集团出资企业沈阳有色金属研究院（简称沈阳研究院）完成的“SK9011浮选药剂研制及在金、铜等硫化矿选矿中的应用”科技成果进行了鉴定，一致认为该项目首次把捕收剂、调整剂、起泡剂和溶剂调配在一起，产品填补了国内外空白，整体技术达到国际先进水平。

简介：AnanalysistechniquecombiningRBSwithPIXEtechnologybyx-particlesincidentbeamwasconstructedandappliedtoanalyselightimpuritiesinheaviersubstrates.ItcanruninmeasuringRutherfordbackscatteringandX-rayspectrainrandomandchannelingmode,simultaneously.Beingusedtoanalysesulphuratomsim-plantedintoGaAssinglecrystals,thismethodisrelativelysimpleandquick-operating.Itisespeciallyusefulforanalysinglightimpuritiesinsemiconductorcompounds,optoelectronicandmicrowavematerials.

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简介：DeformationtemperatureandpostdeformationannealingeffectsonseverelydeformedTiNialloybyequalchannelangularextrusionLIZhenhuaandCHENGXianhuaAbstractMicronTiNialloyblockswerefabricatedathightemperatureby

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简介：Thetenacityofheat-affectedzone(HAZ)willdeclineandthesizeofgrainswillincrease,becauseoftheoverheatingonHAZwhensubmergedarcwelding(SAW)isusedtothickplatewithhighheatinput.TheshapingwillworsenwhenSAWisusedtothinplatewithhighcurrentathighspeed.AnewSAWtechnology,thepulseddirectcurrent(DC)automaticSAW,willbeputforwardinthispaperinordertoovercometheaboveshortcomings.Andapulsedcontrollerwithmicro-controllerunit(MCU)asthecore,nixietube(NT)andkeyboardastheman-machineconversationinterfaceisdeveloped.Themainfunctionsofthepulsedcontrollerincludetheoutputofpulsedweldingcurrentandtheworkingwithtwinwire.Theresearchhaswidelyprospectsinapplicationwithsignificantmeaningsintheoryandpracticalengineering.

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简介：ProblemsaboutsurfacemountingprocessforfinepitchdevicesandreasonsonsolderbridgingofLtypeleaddevicesweldedaredepicted.Bridgingmechanismandinfluencefactorsareanalyzedwithtwo-dimensionalgeometricmodel.Basedonthis,high-densitysurfacemounttechnology(SMT)forfinepitchLtypeleaddevicesheatedbyscan-ninglaserisraised.SurfacemountprocessforQFP208onprintedcircuitboard(PCB)isstudied.Theresultsoftestsarethatitisquitepossibletosolvethesolderbridgingofsurfacemountingforpitchdeviceswithscanninglaser-heat-ingmethod.

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简介：Thecharacteristicsoftemperatures,stressesandstrainsfieldshavebeenstudiednumericallyforatitaniumalloysheetweldedwithanimprovedgastungstenarcweldingmethod,inwhichatrailingspotheatsinkisintroducedtocontroltheweldingstressanddistortion.Theimpingingjetmodelisemployedtodescribetheintenseheattransferbetweenthecoolingmediaandthetopsurfaceoftheworkpiece.Theinfluenceofthedistancebetweenarcandheatsinkisinvestigated.Resultsshowthatthereisanidealrangeofdistance.Usingtheidealdistance,alowstressandnodistortionweldingstructurecanbederived.

简介：Somepartswithcapillarytoplatejointhaveimportantapplicationinaerocraft.Vacuumelectronbeambrazing(VEBB)technologyisusedtorealizethisjointingwithcapillaries.Firstly3Dfiniteelementanalysismodelisbuiltinthispaperaccordingtothisspecialstructure.AndthenANSYSfiniteelementanalysissoftwareisusedtoanalyzebrazingtemperaturefieldatdifferentbrazingparameters.Thecalculationresultsshowthatthetemperaturefieldofsimulationhasgoodagreementwiththatmeasuredbyexperiment,whichprovesdependenceofthemodelbuiltinthispaper.Andalsoreferenceparameterscouldbeprovidedforrealbrazingprocessthroughcalculationinthismodel.BrazedjointofcapillarytoplatewithgoodperformanceisachievedusingVEBBtechnology.Theachievementofthestudywillbeappliedinaerocraftinthefuture.

简介：WeldingresearchofA6N01S-T5aluminumalloyprofileforhigh-speedtrainwasdonebyusinglaser-MIGhybridweldingandMIGweldingindividually.Andtheweldappearance,weldingdistortion,mechanicalpropertiesofthejointsandmicrostructureswereanalyzed.Thetestresultsdemonstratedthathigh-efficientweldingfortheprofilecanbeachievedbyusinglaser-MIGhybridwelding,thespeedofwhichcanbeover3.0m/min.Theprocessinghadagoodgapbridgingability，evenifthegapofthebuttjointwasupto2.0mm,agoodweldappearancecanalsobegot.Whilethehybridweldingspeedwasgreaterthan2.5m/min,theweldingdistortionofthelaser-tandemMIGhybridjointswasjustabout33%ofthatoftheMIGjoints,buttheweldingefficiencywasover3timesofMIGwelding.Andtensilestrengthofthehybridjointswas85%ofthatofA6N01S-T5basemetal,9%higherthanthatoftheMIGjoints.Fatiguepropertieswastestedindividuallywithpulsedtensilefatiguemethodintheconditionof1×107lifetime.Thetestresultsdemonstratedthatthefatiguestrengthofthejointswasalittlelowerthanthatofbasematerial,whichcouldbeupto115MPa.Butthefatiguestrengthofhybridweldingjointswas107.5MPa,whichwas23%higherthan87MPaofMIGweldingjoints.

简介：在近期辽宁省政府新闻办召开的新闻发布会上，辽宁省科技厅副厅长孟庆海公布了辽宁科技创新重大专项进展情况。孟庆海介绍，为提升辽宁省装备制造业自主创新能力，加快推进经济结构调整和发展方式转变，辽宁省科技厅连续五年重点支持高端装备产品研发，力争到2017年，

简介：7月26日,冒着40℃的酷暑,上海市焊接协会一行人访问了坐落在松江区车墩镇的新会员单位上海亿诺科技有限公司。通过与该公司负责人的专访和现场参观,给人留下深刻印象的是“四个新”。

简介：在直径的200公里的AZ31合金营舍被扔的常规直接寒冷(DC)的三个不同过程生产，低频率的电磁的扔(LFEC)并且扔的低频率的电磁的颤动(LFEVC)分别地。微观结构，macrosegregation和AZ31合金营舍的机械性质上的LFEC和LFEVC的效果被调查。在扔的常规DC，AZ31合金营舍展出了粗糙的谷物(大约370m)和艾尔和Zn的严重分离。面对独唱，低频率的轮流出现磁场或一块低频率的电磁的颤动地在200公里AZ31营舍扔的DC期间适用，在AZ31合金营舍的谷物有效地被精制(大约210m)并且在营舍的艾尔和Zn的macrosegregation极大地被减少。而且，张力的力量，破裂延伸和当演员组AZ31合金营舍的坚硬被LFEC和LFEVC的过程相对由扔的常规DC的过程扔了那改进。

简介：应中科院金属所非平衡金属材料研究部马宗义研究员邀请,加拿大工程院院士、瑞尔森大学(RyersonUniversity)教授陈道伦(DaolunChen)博士于9月26-30日,对该所进行了访问并讲学。来访期间,陈道伦教授为该所科研人员和研究生作了题目为'UltrasonicSpotWeldingofLightweightAlloysforAutomotive

简介：我公司前身为苏州啸波再生金属设备成套有限公司，是国内少数能提供全套金属再生设备的设计、制造、安装和调试的专业技术公司，其提供的设计和制造技术水平为国内领先，并达到了国际先进水平．受到了广泛赞誉。其主要产品为金属再生的熔炼设备，各种吨位、各类品位的废金属熔化炉和精炼炉、保温炉、灰处理设备、铸锭设备等。公司的拳头产品铝屑熔化炉采用特殊熔化工艺及搅拌方法，