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  1. collins8991

    Gas Flow Calculations???

    Hi guys, Still relatively new to this technology but we are trying to calculate our gas flow to do accurate price quotations. Currently we are running 8 bar of nitrogen through a 2mm nozzle. We have automatic calculators online which give the flow rate (liters per minute) but we are looking to...
  2. collins8991

    NEW! Power, Freq, Duty explanation please!

    Ok so the power setting I have in the conditions e.g. 2000w is the power when I'm using a CW (Duty at 100%) ? And if I was to change the duty to let say 50% I would now be emitting 1000w? And what do you mean by "minimum power density at the focus spot"? A lot of our work has complex contours...
  3. collins8991

    Motor Laminations

    Anyone have any experience in cutting motor laminations? M530 50A to be more specific. It is a mild steel base material? Any tips on focus, feeds, duty etc. Thanks
  4. collins8991

    Taper in fibre laser

    Great. Thank for the help, much appreciated!
  5. collins8991

    Taper in fibre laser

    So would I be right in saying the larger the focal length, the less pronounced the hourglass effect of the laser beam is which would minimize the taper - however this would result in a larger kerf or beam waist and a lower power density?
  6. collins8991

    Taper in fibre laser

    Ok. So as I increase the focal length the actual focal point, that width increases. And i adjust the focal point by moving the lense up or down but how do you adjust the length? Or is that the actual distance from the top of the sheet to the lense? Sorry about the basic questions - new to this...
  7. collins8991

    Taper in fibre laser

    I see. So if I can produce a longer focal length I should be able to minimise the taper of the hourglass? So the focal point is dictated by the lense position above the material, but what conveners the focal length?
  8. collins8991

    Taper in fibre laser

    Really? So if I have the focal point lets say 0.6 deep in a 1.2mm thick material in theory I should get a hour glass taper? And is there any point above or below which can minimise the taper? Also do ye think adjust powers etc would have any influence? New to this technology.
  9. collins8991

    Taper in fibre laser

    oh yes sorry. It's set at 1.0. I focused the lense with this material for the narrowest kerf width and went from there. Adjust the focus point doesn't seem to give me a much better result?
  10. collins8991

    Taper in fibre laser

    New to all this so excuse my ignorance but how do you know were the focal point is in the material?
  11. collins8991

    Taper in fibre laser

    Hi Guys, On a Amada FLC-AJ and experiencing taper across 1.2mm stainless. It's taper of 0.025mm, 0.6mm deep which then tapers back in - similar to a hour glass form. Tried adjust focus with no huge beneift. Any suggestions greatly appreciated!
  12. collins8991

    NEW! Power, Freq, Duty explanation please!

    Thanks for the reply! Great, so the actual duty not only controls the % of time the laser is on/off per cycle but how much actual power is used? I didn't realise that, I thought the power was a constant through out - hence why I was getting a lot of burn marks. So as you said a 10% duty with a...
  13. collins8991

    NEW! Power, Freq, Duty explanation please!

    Hi guys. New to this place and laser cutting in general. Working a new Amada FLC-AJ. Looking for an explanation of how power, frequency Hz and duty effect a cut. Also how to calculate the power outcome when you adjust these. I understand that when duty is 100% you have a CW (continuous wave)...

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