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Solenoid to fire magnetic ball, question about best core material)

  1. May 13, 2014 #1
    So I want to fire a magnetic ball through a solenoid coil but want to know if core material can enhance the performance. Would wire wrapped around soft Iron tube core work better then say a thin copper tube?

    The aim is to increase efficiency so less power needs to be used to fire the magnetic ball, and yes I know the ball would be attracted to the Iron.
     
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  3. May 13, 2014 #2

    Simon Bridge

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    <puzzled> The iron core will stop the ball from going through the solenoid though.
     
  4. May 13, 2014 #3

    berkeman

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    What is the context of your question? Why do you want to fire a metal ball?
     
  5. May 14, 2014 #4
    I clearly said it's a tube, an Iron tube.
     
  6. May 14, 2014 #5
    I don't want to fire a metal ball, I want to fire a magnet
     
  7. May 14, 2014 #6

    Simon Bridge

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    ... fair enough: https://www.physicsforums.com/showthread.php?t=75339

    ... OK then, What is the context of your question? Why do you want to fire a magnet?
     
  8. May 15, 2014 #7

    Simon Bridge

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    Any material that does not hog the magnetic field will help.
     
  9. May 15, 2014 #8
    Hog,you mean shield?

    I know that in a standard solenoid an Iron core (tube) improves performance but a solenoid is accelerating an Iron piston, I'm wondering if its accelerating a magnetised piston will this change.
     
  10. May 15, 2014 #9
    Would progressive fields activated by the magnet's position be used or is it one field? The magnet could activate the next propelling field by a ferric trigger. Spacing fields/triggers would take some work but that would be interesting. The dynamics of the unstable rolling magnet will be a problem with the pole being unlocked. Perhaps a sacrificial container jacket for ball on its ride up the pipe to stabilize the pole for magnetic field synch over progressive propulsion fields.
     
  11. May 15, 2014 #10

    Simon Bridge

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    "Hog" as in the iron gathers all the field lines like a partner hogs the blankets.
    That's how the shielding effect happens and also how iron slugs help.
    Having a megneic piston changes too many variables to comment - you'll have to do it and see.

    homemade is talking about linear accelerator design - you don't need triggers though, just a timer.
    I believe your original question has been answered.
     
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