WEDM malfuntion
Close
Login to Your Account
Likes Likes:  0
Results 1 to 4 of 4

Thread: WEDM malfuntion

  1. #1
    Join Date
    Oct 2017
    Country
    HUNGARY
    Posts
    2
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    0

    Default WEDM malfuntion

    hi there guys,
    we have a WEDM machine at my workplace , not that professional type with automatic wire tensioner and stuff but it's good for us.
    anyway, with some other interestnig problems , i have experienced some issues with the conductive pads (witch ones touching the wire giving the current )
    time to time the machining procedure is slowing down then stops complitely, then the discharges between the piece and the wire disappears
    and its starts to sparkle at the conductors .....making the wire cut them ...and damaging them ,i have tried to alter the tension between the wire and the pads ,but the problem is still coming up ..really annoying
    any helping words ..or a complete solution???
    sorry for my bad english
    patrik.

  2. #2
    Join Date
    Aug 2010
    Location
    New England
    Posts
    294
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    35

    Default

    patrick you are waiting way to long to index the carbides. your wire touches the piece and becomes one with it, now you have a gap between wornout carbide and wire. What machine do you have? different companies have different set ups. how many hours does it take for this to happen?

  3. #3
    Join Date
    Oct 2017
    Country
    HUNGARY
    Posts
    2
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    0

    Default

    as i stated i have tried to adjust the pads to the wire and now they are not just simply touching the wire but pushing it . there is no way for the wire to release them BUT they still giving sparks like carbon brushes in a motor
    machine :dk7740
    it takes 10-20mins

  4. #4
    Join Date
    Feb 2007
    Location
    Angleton, Texas
    Posts
    1,714
    Post Thanks / Like
    Likes (Given)
    939
    Likes (Received)
    536

    Default

    Quote Originally Posted by nincsarcom View Post
    as i stated i have tried to adjust the pads to the wire and now they are not just simply touching the wire but pushing it . there is no way for the wire to release them BUT they still giving sparks like carbon brushes in a motor
    machine :dk7740
    it takes 10-20mins
    If the wire is touching the contact/brush, there will be no spark.

    You can only get sparks where ther is a spark gap.

    Either the spark is not occurring between the contact/brush and the wire but somewhere very close, like the connection point between the power wire and the contact/brush, or the wire is not maintaining constant contact with the contact/brush.

    Is your contact/brush grooved in the area of contact?

    If so, it needs to be indexed so that an ungrooved are is in contact with the wire.

    If there are no ungrooved areas available, it needs to be disgarded in favor of a new contact/brush.


Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •