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  • Peter J Stewart-Hay replied to the topic 'Springback' in the forum.
    Hello Again Mr Ajalloueian;

    Our magnet wire expert was not able to log in so this had to be corrected by WAI before he could even get to the web site. This is now corrected but he is obviously very busy and has not yet logged in.

    Your "hit and miss" springback problem however should be fairly straightforward to sleuth out provided that you have the exact drawing and annealing history of the conductor including that just prior to, during and after enameling. When the springback problem surfaces, something has changed and that is what you must determine.

    I suspect the problem lies in the orientation of the conductor grain structure . I believe that is where you will find your answer..

    Please let us know what you learned. Thank you.
    Read More...
    kunena.post 4 hours ago
  • Mr Bac Do replied to the topic 'Drawing a tinned copper wire' in the forum.
    Hello Mr. Peter J Stewart-Hay,

    Thank you for your information. That's very useful for me to research.

    Have a nice day!!!

    Thanks and Best regards.
    Read More...
    kunena.post 2 days ago
  • Mr Mohsen Ajalloueian replied to the topic 'Springback' in the forum.
    Thank You very much

    I read the threads but I did not get the exact answer . we have hard wire, our elongation is from 30-38%. for sizes from 0.300mm up to 1.300mm. but we have poor ductility. our parameters are:
    -horizontal line with inline drawing
    - annealer oven length is 10m. 2 zones . temperature of annealer is 400 c.
    - enameling chamber is 500 c. and for example for 0.75mm production speed is 50.
    Read More...
    kunena.post 7 days ago
  • Mr Mohsen Ajalloueian thanks user 'Peter J Stewart-Hay' in the forum message ' Springback'.
    kunena.thankyou 7 days ago
  • Peter J Stewart-Hay replied to the topic 'Springback' in the forum.
    Hello Mr Mohsen Ajalloueian;

    I have contacted a magnet wire specialist for you and hopefully, he will post an up to date answer for you. In the meantime, here are two threads and one paper to read:

    www.wirenet.org/wai-forums/5-electrical/...enameled-copper-wire
    www.wirenet.org/wai-forums/8-nonferrous/1610-grain-size#1615
    www.copper.org/publications/newsletters/.../wiremetallurgy.html
    Read More...
    kunena.post 9 days ago
  • Mr Mohsen Ajalloueian created a new topic ' Springback' in the forum.
    We are a manufacturer of enamelled wire. in our production we have problem with spring-back test of wire. sometimes it is good but sometimes not good. could you please help me how i can get the best spring-back?
    Read More...
    kunena.post 9 days ago
  • Peter J Stewart-Hay replied to the topic 'Drawing a tinned copper wire' in the forum.
    Hello Mr ikiz

    When we were re-drawing electro-tinned copper wire, we were using a Syncro C-13 drawing machine with ceramic rings and a Syncro C-3 electric AC annealer. As I recall, the last three dies were new natural diamond and the balance of the dies were high new polish carbide. All dies had the standard angles for copper wire. The drawing lubricant was Lusol WD-1 synthetic and had a slightly higher than normal concentration as that recommended forthe intermediate drawing of copper wire.

    That was long ago, before nano diamond dies and polycrystalline diamond dies (Which of course would have been a disaster.) If you have some other experience with re-drawing tinned copper wire, I am sure that we would all be appreciate of your understanding , of dies and experience..

    Please provide us with your complete information.

    Thank you.
    Read More...
    kunena.post 13 days ago
  • Mr tacettin ikiz replied to the topic 'Drawing a tinned copper wire' in the forum.
    Use suitable die
    Read More...
    kunena.post 14 days ago