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1、RLEINTERNATIONAL睿力汽车科技BodyTeamTrainingSeries–Lesson1Material-AluminumJuly2017©2015RLEINTERNATIONALGroup1Iwww.rle.internationalBriefIntroductionAlloyConstitutionTrainingContentContentMaterialCharacteristicsApplicationsinBIW©2015RLEINTERNATIONALGroup2Iwww.rle.in

2、ternationalBriefIntroduction©2015RLEINTERNATIONALGroup3Iwww.rle.internationalBriefIntroduction–AluminumElementAtabout8%oftheearth'scrust,aluminumisthemostabundantmetal.Nowadaysaviation,construction,automotivethesethreemajorindustriesrequiresmaterialpropertiesw

3、iththeuniquepropertiesofaluminumanditsalloys,whichgreatlybeneficialtotheproductionandapplicationofaluminum.Itsapplicationisextremelyextensive.©2015RLEINTERNATIONALGroup4Iwww.rle.internationalBriefIntroduction-HistoryaboutAluminumBefore19thcentury,aluminumisWit

4、hthedevelopmentofelectrolyticalreductionprocess,aluminummetalregardedasararepreciousmetal,productionstartedtogrowrapidly.evenbemoreexpensivethanTheelectrolyticalreductionprocessgold.TheFrenchemperorNapoleonwasdevelopedandpatentedin1886IIIevenorderedofficialsto

5、buildasimultaneouslyandindependentlybyaluminumcrowntoshowhiswealthPaulHéroultinFranceandCharlesandpower.MartinHallintheUS.©2015RLEINTERNATIONALGroup5Iwww.rle.internationalBriefIntroduction-ElectrolyticalReductionProcessAluminummetalisobtainedfromaluminabyelect

6、rolyticreduction,usingtheHall-Héroultprocess.CalcinedAl2O3isreducedtoaluminummetalinelectrolyticcells,or“pots”,connectedinseriestoaDCpowersource.Thecellsarerectangularsteelpotslinedwithrefractorybricksandcarbon.Modernsmelters(figuresbelow)containtypicallysever

7、alhundredscells(432forthesmelterpictured),operatingatcurrentsof150,000to300,000amperes.Newtechnologyiscomingon-linethatoperatesat500,000amperes.©2015RLEINTERNATIONALGroup6Iwww.rle.internationalBriefIntroduction-ElectrolyticalReductionProcessIttakesapprox2tones

8、ofaluminatoproduce1toneofaluminummetal.Typicalpurityofthemetalproducedis99.7%,withironandsiliconasprincipalimpurities.©2015RLEINTERNATIONALGroup7Iwww.rle.internationalAlloyConstitu