Results 1 to 8 of 8
  1. #1
    mtbr member
    Reputation:
    Join Date
    May 2010
    Posts
    333

    Knurling - cooling

    Hey guys,

    I've been doing a machining night course for fun, we did knurling on the lathe last week, which had me thinking about whether the increased surface area would have much difference on heat dissipation.

    Any thoughts?

    Cheers,
    Lee

  2. #2
    mtbr member
    Reputation: thickfog's Avatar
    Join Date
    Oct 2010
    Posts
    1,080

    Re: Knurling - cooling

    Quote Originally Posted by MrLee View Post
    Hey guys,

    I've been doing a machining night course for fun, we did knurling on the lathe last week, which had me thinking about whether the increased surface area would have much difference on heat dissipation.

    Any thoughts?

    Cheers,
    Lee
    Have to be some seriously deep knurles. I really doubt it.

  3. #3
    mtbr member
    Reputation:
    Join Date
    May 2010
    Posts
    333
    I'm really not sure, it significantly increases surface area.

  4. #4
    Rep Power Infinity +2
    Reputation: brad72's Avatar
    Join Date
    Jun 2009
    Posts
    1,563
    The knurling will increase the surface area a little but not by much.

    Perhaps you should do an experiment. Take 2 bars of alloy of equal diameter and length. Knurl 1 and not the other then attach an led and power it with a driver with thermal cutout and time which one hit the thermal cutout first. The main thing will be to use the same led and driver on each bar to keep things equal.

  5. #5
    mtbr member
    Reputation:
    Join Date
    Dec 2006
    Posts
    13
    Knurling does increase the surface area which should help with heat transfer. There may also be some benefits to having rougher surface finish because of the knurling.

  6. #6
    mtbr member
    Reputation:
    Join Date
    May 2010
    Posts
    333
    I'm not expecting it to be massive, but would make an interesting experiment - it is also more interesting regarding the air disturbance factor in real world tests and not on a bench, ie with some air flow.

  7. #7
    mtbr member
    Reputation: thickfog's Avatar
    Join Date
    Oct 2010
    Posts
    1,080

    Re: Knurling - cooling

    Quote Originally Posted by MrLee View Post
    I'm not expecting it to be massive, but would make an interesting experiment - it is also more interesting regarding the air disturbance factor in real world tests and not on a bench, ie with some air flow.
    If you ever try it and test it, please post results. It would be interesting.
    Last edited by thickfog; 02-17-2013 at 12:21 PM.

  8. #8
    banned
    Reputation:
    Join Date
    Aug 2012
    Posts
    2,049
    Quote Originally Posted by MrLee View Post
    I'm not expecting it to be massive, but would make an interesting experiment - it is also more interesting regarding the air disturbance factor in real world tests and not on a bench, ie with some air flow.
    It appears that you're onto something - AUGMENTATION OF HEAT TRANSFER, TWO-PHASE
    But how much of an increase you might see, seems to be a question without an answer.

Posting Permissions

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