Re: [CAD_CAM_EDM_DRO] Re: Aluminum cutting,,,,,,,

High velocity air IS a coolant! In fact, if pressurized air is blown thru a
venturi the airs temperature will lower as it's volume expands.

Your conclusions are acurate....IF there isn't much heat buildup no coolant
is required. Since there will normally be heat buildup on prolonged
machining jobs, coolant (air, water, kereosene or whatever suits you) will
be required. Gets us blind people with experience really are capable of
leading the blind.

Smoke

>There is a lot of blind-leading the blind here, but that's the way
>with most progress.
>
>The subject of coolant on aluminum is hotly debated around my area.
>So a couple of weeks ago while attending EASTEC,(a large machinist
>show near Boston, MA), just for fun I thought I would carry the
>cooling question around, to the various vendors. I talked to dozens
>fo manufactures of coolants and tools.
>
>MY CONCLUSION, (someone could have reached a different conclusion,
>based on hearing the same information was):
>
>No coolant needed if there is 1) not much heat and 2) no trapped
>chips.
>~~~~~~~~~~~~~~~~~~~~
>
>Other related items:
>-there were demonstrations of machining using high velocity air,
>rather than coolant.
>
>-Vacuum of chips through 3/4" goose-neck hoses, right at the tool
>were shown.
>
>- If you want to understand climb milling with aluminum, just try it
>both ways.
>(Climb milling with steel has been dangerious for me too.)
>
>Buck
>
>
>
>
>
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