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

简介：904L是一种全奥氏体不锈钢,在焊接时易出现热裂纹,且晶间腐蚀和应力腐蚀开裂倾向较大。本文经可焊性分析后,从焊接材料和焊接工艺参数的选择入手,进行了焊接工艺性试验,找出了合适的焊接规范,并在实际产品的焊接中进行了严格的质量控制,生产出合格的产品。

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简介：Intheacceleratordrivensub-criticalsystem(ADS)cooledbyliquidPbBialloy,theausteniticstainlesssteel316Lisoneofthecandidatesofstructuralmaterials.However,thecorrosionandwearbehaviorof316Lsteelinthehigh-velocitystreamofliquidPbBiisthemostessentialissue,whichisurgenttobepaidcloseattention.Inordertoacquirethemorphologyandmechanicalpropertiesof316Lsteelintheconditionsofdifferentrelativeflowingvelocity(RFV),respectively2.62m/s,3.69m/s,4.77m/s,theexperimentwascarriedoutindynamicliquidPbBiat550℃,uptoabout1500h.Accordingtotheresults,thesurfaceof316LhasbeencorrodedbadlyandtheelementsofNi,Cr,etc.werefoundtodissolvealot.WiththeincreaseoftheRFV,thefeatureof316Lsurfacechangedfromthesurfacewithmuchdeeperpitsandlooserstructurestotherelativeplanarone,andthethicknessoftheouteroxidelayerdecreasedgraduallywhilethatoftheinneroxidelayerdiminishedalittle,andthemicrohardnessoftheoutermostsubstratealsodeclinedincreasingly,inaddition,thedomainofthepartialsubstratewithitsmicrohardnessbeingaltereddeepenedfurther.Theseexperimentaldatawouldoffertheoreticalbasisandpracticalvaluestostudycorrosionconditionof316LsteelinliquidPbBiwithhigh-velocity.

简介：<正>2010年5月,北京赛福斯特技术有限公司与英国精密技术集团公司(PTG)合作,联合开发出FSW-5DLM-010型大型数控动龙门搅拌摩擦焊设备(图1)。赛福斯特公司依据自身

简介：<正>苏州米加尼克焊接技术有限公司是由丹麦米加尼克(MigatronicA/S)公司和苏州威达焊割科技有限公司共同组建。公司已于2007年1月成立,注册资金325万美元,总投资达650万美元。

简介：<正>2007年6月19～21日,北京埃森焊接设备会展在上海新国际会展中心召开。苏州米加尼克焊接技术有限公司派出了由总经理NIELS先生、销售总经理曾亮先生亲自率领的强大阵容参展,接待了来自国内外的来宾和访客。另外,丹麦米加尼克公司市场总监ANNPURK女士和高级焊接工程师、总教练BENT先生特别出席了这次展会。