Hi All,
Back in the late 50s when, as a young apprentice, I was turning
knobs on a milling machine as part of my education, the shop foreman replaced
the flood system on the mill with a new-fangled mister. The mister feed tank
was filled with the same stuff that was used for the flood system. That is
water with 15(?) percent soluble oil.
The foreman told me that the mist cooled the part and the tool by evaporating
the water, and the oil gave some lubrication to the cutting action. Also
misting greatly aided the water evaporation compared to the flood system.
As the foreman is by now no longer with us, I feel safe in raising the
question, was what he told me true? If it was, why are you now using only oil
that is much less efficient in absorbing heat by evaporation than water?
Regards all. I love reading the chat.
__________________________________________________________________________________________
John Harris
E-mail: jdhhar...@customstage.net
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