Glue for electrical steel transformer core?

Discussion in 'The Projects Forum' started by electronice123, Oct 13, 2009.

  1. electronice123

    Thread Starter Active Member

    Oct 10, 2008
    I have a transformer E I core which I need to glue together. What kind of glue can I use? I have been told fabric glue works well??? What can be done to help prevent the core from corrosion?
  2. SgtWookie


    Jul 17, 2007
    Seems to me they used to use lacquer or shellac.

    As long as the cores don't have any corrosion on them already, and are spotlessly clean before the chosen adhesive/sealer is applied, they shouldn't corrode.
  3. studiot

    AAC Fanatic!

    Nov 9, 2007
    Cores laminations are normally mechanically clamped together.

    This provides closer proximity, due to the greater positive clamping force involved. Glue only ges in the way.

    The flat sides of the laminations are normally separated by thin paper leaves to prevent transverse currents.

    After winding you can encapsulate the whole assembly in varnish or epoxy if you like. They used be be wax impregnated, as the molten wax will penetrate the interstices.