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Pressure x temperature calculation

  • 28-05-2021 1:36pm
    #1
    Captain Slow IRL
    Registered Users, Registered Users 2 Posts: 3,651 ✭✭✭


    Hi all,

    I've a query about correlating output when pressure and temperature are the variables, could anyone help?!

    I want to seal 2 pieces of material together, using a heated sealer at 100 degrees C and at a pressure of 5kN. If I want to reduce the pressure, what formula do I need to know what pressure increase I should expect?

    TIA


Comments

  • #2
    CatFromHue
    Moderators, Science, Health & Environment Moderators Posts: 18,266 Mod ✭✭✭✭CatFromHue


    Is there an information booklet that came with the sealer or can you check their website/with their sales rep for more info?


  • #3
    Captain Slow IRL
    Registered Users, Registered Users 2 Posts: 3,651 ✭✭✭Captain Slow IRL


    Apologies for the delay in responding.

    No, that is the problem - I have no information like that.


  • #4
    Turbulent Bill
    Registered Users, Registered Users 2 Posts: 1,638 ✭✭✭Turbulent Bill


    If you don't have manufacturer's information, you'll have to do it empirically. Define some sort of acceptance criteria for the seal (e.g., doesn't leak below some threshold value), then run some experiments using varying temp and pressure. Plot all the samples which passed the seal test to show you what the behaviour is.

    Google "design of experiments" for background.


  • #5
    amen
    Registered Users, Registered Users 2 Posts: 2,781 ✭✭✭amen


    what about failure temp/pressure?

    cycles before failure etc?


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