Search:

Type: Posts; User: Oldbob; Keyword(s):

Search: Search took 0.00 seconds.

  1. Replies
    5
    Views
    4,943

    Re: minimum mold dimensions

    Hi,
    Generally speaking the mold / machine combination is determined by the tonnage needed to make your part. The smaller mold is just not running as efficiently from a machine hour cost basis in...
  2. Re: Voids in polypropylene parts - raw material problem?

    Looks like they might be pushing their material too fast, so you are not getting a smooth flow at sight 1. Since you are probably not going to get much cooperation from them as long as their material...
  3. Re: ID shrinkage observed on Brass Metal Insert (C3604) after plastic injection over Moulding

    Hi Curious,
    Without observing the entire process, I could not hazard a guess as to how accurate those holding pressures are. Generally speaking you should have done a cycle optimization when you...
  4. Replies
    3
    Views
    4,371

    Re: Nylon 6 Brittle parts

    Unfortunately Nylon is a hygroscopic material. It will dry out and become brittle. In the past I have worked at places where we had to add water to the parts just before shipping so this would not...
  5. Replies
    3
    Views
    4,694

    Re: Arburg pressure issue

    Actually the injection unit is run by a servo, so no hydraulic to the injection unit, just the screw rotation gear box. Are you thinking a possible short in the line on the Transducer? Or should i be...
  6. Replies
    3
    Views
    4,694

    Arburg pressure issue

    We have an Arburg Allrounder 570A 175 ton hybrid (electric / Hydraulic). Injection pressure was not reading what it normally was. Replaced the force sensor, boards and modules.

    Currently it will...
  7. Re: ID shrinkage observed on Brass Metal Insert (C3604) after plastic injection over Moulding

    When the mold was designed did you calculate the brass shrinkage due to heat (considering that PEEK has a melt index approx. 360C). If it is a cylinder the ID will actually get smaller as it heats...
Results 1 to 7 of 7