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

On Thu, 30 Jul 2015 08:55:41 -0400, 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, fascinating article (marking ink reduces cutting force needed by
half), but oil isn't even mentioned on the page.

--
My desire to be well-informed is currently
at odds with my desire to remain sane. --Sipkess

On Thu, 30 Jul 2015 08:55:41 -0400, 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

FYI, there's something a little funny about the report. The folds have
been known for at least 50 years. Carnegie-Melon Univ. was shooting
high-speed movies of their formation then. The internal shape of the
displacements, however, probably was not known.

The rest of it is very interesting and somewhat surprising.

--
Ed Huntress

In article , Larry Jaques
wrote:

On Thu, 30 Jul 2015 08:55:41 -0400, 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, fascinating article (marking ink reduces cutting force needed by
half), but oil isn't even mentioned on the page.

Yes, that's the point - a solid cannot have penetrated at all, and yet
its presence reduced cutting force by one half.

Joe Gwinn

In article , Ed Huntress
wrote:

On Thu, 30 Jul 2015 08:55:41 -0400, 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

FYI, there's something a little funny about the report. The folds have
been known for at least 50 years. Carnegie-Melon Univ. was shooting
high-speed movies of their formation then. The internal shape of the
displacements, however, probably was not known.

The rest of it is very interesting and somewhat surprising.

I think that their claim is precisely that they determined the precise
shape of the internal displacements. I certainly have not seen videos
clearly showing that. One assumes that the academic article will
explain all this.

One surprise was that a solid ink film could act as a metalworking
lubricant - this show why.

On the linked Purdue website, there was an email address for
journalists to request a gratis copy of the underlying article.

Joe Gwinn

OK. So, paint helps with metal removal.

Great.

So you paint the part. Wait until paint dries.

Remove the first layer of metal.

Paint again, watch it dry

Perfect for a union shop, I would say!

i
On 2015-07-30, 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

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?

I hear champagne corks popping at Dykem HQ.

PaulS

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?


Dan

Using the 200 micron reference bar and "measuring" from my monitor
screen, I figured that their depth of cut was about 1 thou. If so, one
has to wonder if real world DOC would have the same effect.

Bob

In article ,
Ignoramus28173 wrote:

OK. So, paint helps with metal removal.

Great.

So you paint the part. Wait until paint dries.

Remove the first layer of metal.

Paint again, watch it dry

Perfect for a union shop, I would say!

Ahh, this is a research trick, not a production process.

No matter what the PR Dept said.

Joe


On 2015-07-30, 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

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

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