Talking Physics

Magnet

This topic contains 6 replies, has 4 voices, and was last updated by  Nick Mitchener 1 year, 3 months ago.

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  • #50731
    Profile photo of Andrew Normand

    I know that heat can reduce a magnet but to  want to know. Can magnets be welded? If yes or no, explain the science behind it.

    From Gideon.

  • #50737
    Profile photo of Andrew Normand

    I can’t see welding being great for magnets

     

    https://en.wikipedia.org/wiki/Curie_temperature

  • #50742
    Profile photo of Andrew Normand

    I know you can solder to magnets, you just have to be careful not to get them too hot, I guess welding to them is not going to be a good idea as explained above.

  • #50747
    Profile photo of Andrew Normand

    I’m surprised you can even solder to them. You can make a curie engine with an iron ring a magnet and a candle. The candle is enough to disorganise the domains in the ring so that the attraction of the magnet is biased to one side hence the motor effect.

  • #50748
    Profile photo of Andrew Normand

  • #50752
    Profile photo of Andrew Normand

    I have never heard of a Curie engine. I will have a go at making one. I did add this demo to my magnetic lessons recently. I just realised my straight reference line failed!

    • #50753
      Profile photo of Andrew Normand

      it’son my list of jobs, haven’t got round to it yet. The pendulum type are easier but not as much fun.

       

      I have a nitinol engine  🙂

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