Advanced Metal Forming Processes - สำนักวิชา ...eng.sut.ac.th/metal/images/stories/pdf/10_Advanced...2013-02-28After hydroforming the hydraulic press ... Operating principle of electrom agnetic metal forming process 26 Advanced Forming Processes Basic Methods of EMF Compression forming Expansion forming . 27 Advanced Forming Processes

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    15-Mar-2018

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  • Advanced Forming Processes 15

    Triple action press PRESS

    Advanced Forming Processes 16

    HYDROFORMING

  • Advanced Forming Processes 17

    1.ClosedieThestartingtubeastraightorprebenttubularsectionisplacedintoadiewhichhasthecontourofthecomponenttobeproduced.

    The Process - in four steps to the finished hydroformed part

    2.FillwithwaterThedieisclosedandheldclosedbymeansofahydraulicpressandkeptunderpressure.Hydraulicallyactuatedsealingpunchescloseoffthetubeendsandfillthetubewiththefluidmedium,thusbuildingupinternalpressure.

    Advanced Forming Processes 18

    3.Movehorizontalcylinders,regulatewaterpressure,movecounterholderIntheactualformingprocessthematerialisexpanded.Atthesametimethesealingpunchescompressthetubeends.Thiscausesthematerialtoflowintothecontourofthedie.Aprecisecontroloftheinternalpressureandoftheaxialcylindermovementenablesthatthematerialtakesontheformoftheinternaldiecontourandthecomponentgetsitsfinalshape.

    4.Openpress,unloadcomponentAfterhydroformingthehydraulicpressopensthedieforunloadingthecomponent

  • Advanced Forming Processes 19

    a b

    c d

    Faxial Faxial P

    e f

    Tube Hydroforming

    Advanced Forming Processes 20

  • Advanced Forming Processes 21

    Complete

    Open Model

    Advanced Forming Processes 22

    Hydroformed Side Rails on a Truck Chassis

    Hydroformed Exhaust Parts

    Hydroformed Cam Shafts have Lower Rotational Inertia and Require Less Machining

  • Advanced Forming Processes 23

    Advanced Forming Processes 24

    ELECTROMAGNETIC FORMING EMF

  • Electro-Magnetic Forming

    Advanced Forming Processes 25

    Operating principle of electromagnetic metal forming process

    Advanced Forming Processes 26

    Basic Methods of EMF

    Compression forming

    Expansion forming

  • Advanced Forming Processes 27

    Basic Methods of EMF

    Contour forming

    Electro magnetic actuator

    Advanced Forming Processes 28

    Improve stamping operation

    Improved Formability at high velocity.

    Improved strain distribution

    Reduction in wrinkling

    Active control of springback

    Distortions at local features are minimized

    Local coining

  • Advanced Forming Processes 29

    A demonstration of the ability to add character lines without distortion and/or wrinkling with full-size aluminum hood.

    Advanced Forming Processes 30

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