Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work.

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Old July 31st 15, 02:40 AM posted to rec.crafts.metalworking
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Default How lubricants help in metal cutting

In article , PCS
wrote:

On Thursday, July 30, 2015 at 8:55:44 AM UTC-4, Joe Gwinn wrote:
There was an interesting article in R&D Magazine, with a video:

.http://www.rdmag.com/videos/2015/07/...ie-effect-may-
lead-manufacturing-advances?et_cid=4699640&et_rid=41417408&type=cta

The mystery was always how the oil got to where it needed to be to
affect metal removal - it was hard to see how the oil could penetrate
into the solid metal that was soon to be removed. The video shows that
the surface is cyclically sheared and ends up in a chip that resembles
a stack of dimes, and no penetration into the bulk metal is required to
lubricate this process.

Joe Gwinn


Did it say "marking Ink" created a 50% reduction in cutting force?


Yes. It seemed to be the kind of ink one uses to permanently mark
metal parts, such as those used in airplanes.


I hear champagne corks popping at Dykem HQ.


It may be premature - drying is slow, as Iggy points out.

Better understanding the cutting process may lead to better cutting
lubricants. But the current ones are already pretty good.

Joe Gwinn

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Old July 31st 15, 02:41 AM posted to rec.crafts.metalworking
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Default How lubricants help in metal cutting

In article ,
" wrote:

On Thursday, July 30, 2015 at 1:53:19 PM UTC-4, PCS wrote:


Did it say "marking Ink" created a 50% reduction in cutting force?

I hear champagne corks popping at Dykem HQ.

PaulS


It would be nice if they said exactly what marking inks they have tried.

The article said that"pre hardening " had the same effect. Can anyone tell
me what " pre hardening " is?


I read that as an allusion to curing by ultraviolet light or an
electron beam.

Joe Gwinn


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