ASM Online Member Community

Expand all | Collapse all

spray cooling after solution heat treatmet for Aluminum

  • 1.  spray cooling after solution heat treatmet for Aluminum

    Posted 07-28-2020 08:14

    What are the disadvantages with spray cooling after solution heat treatment of aluminum alloys sheet metal parts?  



    ------------------------------
    Eli Yudkevich
    consultant engineer
    self employ
    kfar saba il
    972 523663911
    ------------------------------


  • 2.  RE: spray cooling after solution heat treatmet for Aluminum

    Posted 07-29-2020 14:25
    The only real disadvantage, it seems to me, is the amount of process control and testing required. These requirements are a result of historical distrust of the product due to problems experienced by the military in the 1970's. Because of poor spray design and/or maintenance, a lot of product escaped with local soft spots. To avoid this problem, they discouraged the use of spray quenching and imposed the approval, process control and test requirements you see today.

    ------------------------------
    Thomas Murphy
    Owner/Manager
    CLADIC Consulting
    Milford CT
    ------------------------------



  • 3.  RE: spray cooling after solution heat treatmet for Aluminum

    Posted 07-30-2020 15:33
    Thomas's reply is perfectly right. Spray cooling has been greatly improved by furnace / nozzle suppliers during last decades, with great opportunities to control the deformation from cooling and taking into account all metallurgical requirements regarding the processed sheets.

    ------------------------------
    Christophe Jaquerod
    Industrialisation & Product development Manager
    Constellium Valais SA
    Sierre
    +41274576437
    ------------------------------



  • 4.  RE: spray cooling after solution heat treatmet for Aluminum

    Posted 07-31-2020 11:01
    On sheet applications leidenfrost effects can make some challenges, mostly in not cooling as fast as expected.

    ------------------------------
    Curtis Eddie
    GTL - Continuous Anneal Solution Heat treat
    Novelis
    Newton Falls OH
    (330) 979-7695
    ------------------------------



  • 5.  RE: spray cooling after solution heat treatmet for Aluminum

    Posted 07-31-2020 12:50
    Yes, and this won't be different in immersion quenching if sheets get too close during immersion !

    ------------------------------
    Christophe Jaquerod
    Industrialisation & Product development Manager
    Constellium Valais SA
    Sierre
    +41274576437
    ------------------------------