AluminumProfileExtrusionShandongUniversity2010.06ContentsChapter1ProcessofExtrusionofAluminum....................................................................................................................11.1ProcessOverview................................................................................................................................................11.2Billet....................................................................................................................................................................21.3DiesandTooling..................................................................................................................................................21.4DirectExtrusionOperation..................................................................................................................................51.5Aging...................................................................................................................................................................61.6Packaging.............................................................................................................................................................7Chapter2MetallurgicalPrinciples.....................................................................................................................................82.1Introduction..........................................................................................................................................................82.2Structure...............................................................................................................................................................82.2.1LatticeStructureSinglePhase..................................................................................................................92.2.2MultiphaseStructure—EquilibriumDiagrams......................................................................................142.2.3Diffusion,Precipitation,Non-equilibrium.............................................................................................182.2.4MeltingandCastingProcesses...............................................................................................................212.3DevelopmentoftheContinuousCastStructure................................................................................................222.3.1PeripheralShellandPeripheralSegregation..........................................................................................232.3.2CastLogSurface....................................................................................................................................242.3.3CastGrainandCellStructure,IntermetallicPhases..............................................................................26Chapter3MachineryandEquipmentforDirectandIndirectHotExtrusion...................................................................313.1MachineryforDirectExtrusion.........................................................................................................................313.1.1ExtrusionPressDesignPrinciples..........................................................................................................333.1.2MainSubassembliesoftheDirectExtrusionPress....................
