EDM Drill time
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Thread: EDM Drill time

  1. #1
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    Default EDM Drill time

    I've only ever ran one EDM drill ever and I'm curious as to how efficient it is.

    So my question is how long (on average) should this take with the correct settings?

    1.5 mm hole through 2" of hardened 420 SS (50-54 RC)

    Takes me on average about 30 minutes
    Last edited by keurb; 04-12-2018 at 03:33 AM.

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    That seems like that is much to slow. Lots of questions here. What machine and power capability, electrode material, the condition of the machine, condition of the water system, doe's it have good flush pressure, good spindle speed. I do holes like that in around 5 minutes or so.

    Bill

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    Something is wrong. That shouldn't take more than a few minutes.

    What is your flushing pressure? Brass electrode?

    PM

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    30 minutes? Wow!!!

    Sure, I have a 75Amp generator, but 2" of steel is sub 5 minutes, Stainless maybe 3 at most.

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    I agree 3 -5 minutes is what it would take us. Brass no core electrode.

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    Sorry for the delay.

    Brass no core electrode
    Charmilles HD-8 25 amp in decent condition with brand new pump
    good flush pressure and spindle rotation speed (I think) not sure if that's adjustable

    With the 1.5mm electrode I use these settings
    On time 60
    Off time 30
    Current 15
    Capacitor 0
    Gap 3
    Speed 1.8
    Pressure 45-50 kg/cm2

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    Keurb,

    Try one of these settings...the machine I ran had a 60Amp power supply, but hopefully these might be of some use to you.

    -Brianhd8-1-6-settings.jpg

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    Ok I will give these settings a shot when I get some time and let you know. Thank you!

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    Brian Pfluger,
    I tried those settings but it was slower and barely even burning.


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