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Thread: Calculation for Dishend of Vessel

  1. #1

    Calculation for Dishend of Vessel

    Dear All,

    I am here writing to ask one doubt so if anybody knows this then please tell me.

    I m working as Trainee Engineer. I am required to calculate how many plates of which sizes required for manufacturing of dishend?

    I have calculated BlankDiameter...now i m stuck with how to calculate..numbers of plates required. I need this for procurement.

    So I am requesting if any body knows this then please reply me back.

    Thanks Very Much

    Hardik


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  3. hi,
    Could you type in your question more clearly? Number of plates? are you trying to put a mitred end closure?

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  5. #3
    Dear member,
    If you got the diameter of the blank, then it is the plate size physically available are the informations you nedd to decide on the number of plates required for the blank. You need to join them before into sufficient ly enough for accomodating the blank plate onto joined plates. Standard plates sizes available are 2, 2..5 mts or even 1.6 mts wodth. length of the plate may vary such as 6, 5.6, 10, 12 mts of standard mill lengths.
    After joining them you nedd to do ultrasonic test or radiographic tests to make joint as good as parent plate itself. Then go for marking the blank plate dimension on to it. Cut to size and use it for dished end pressing.
    Hope this clarifies your doubt.

  6. hi here is the excell file

    Check the zip file attached . it contains a excell file calculation the dish end for a boiler

  7. dear all,

    how to calculate required power to forming dish end ??? torque or Force power


    thanks,
    marv01

    My threads; marv01 :


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    • please send me design of 102 PSI Diameter of vessel is 660mm and hieght is 1600mm
      4 nozzles of dia 50mm at 160mm centre to centre and one nozzle at the top of dia 42mm please specify thickness of shell and dish end and other related designs
      Thanks and Regards

      My threads; ebadullahmomin :


      • #7
        gentlemen,

        Try to fit whole dish in one single plate so that you can avoid lot of stresses and if you are making in two or more plates, then there will be more stress and it required RT (100%). So go for one single plate.

        br,
        sameer

      • well we use the dish end having 2 radius one knuckle and crown radius . having
        formula like

        r=.17 D
        R=.906 D
        sf =50
        Height of dish end=.25 D

        D= dia of tank

        how can calculate the blank dia for dat.

      • Dear Hardik,
        can you send me blank dia calculator for dished end
        tmvgirish@rediffmail.com

        thanks

        My threads; tmvgirish :


        • Prashanth thanq

          My threads; shankargee :


          • #11
            Quote Originally Posted by marv01 View Post
            dear all,

            how to calculate required power to forming dish end ??? torque or Force power


            thanks,
            marv01
            See the following site:

            [link Point to another website Only the registered members can access]


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          • #12
            Quote Originally Posted by tmvgirish View Post
            Dear Hardik,
            can you send me blank dia calculator for dished end
            tmvgirish@rediffmail.com

            thanks
            See the following site:

            [link Point to another website Only the registered members can access]


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