[TheForge] carbon banding in 52100 steel

[Ben Barrett]

Has anyone invoked sound waves into the quench?
Here is a neat sample using cornstarch:
http://www.c00lstuff.com/178/Non_Newtonian_fluid_under_vibration/

here is a funny youtube link:  http://www.youtube.com/watch?v=f2XQ97XHjVw
and a better reference:  http://en.wikipedia.org/wiki/Non_Newtonian_fluid
(see other external links at the bottom of the wikipedia page, for
better videos)

enjoy,

ben

PS - I wonder what magnetic waves into a hot ingot, while cooling,
would do -- surely the crystals can be aligned and even further
shifted this way, as they are in nature :)


On 5/8/07, Ron Childers <munlaw2 at hcsmail.com> wrote:
> Did you differentially quench?
>
> -----Original Message-----
> From: theforge-bounces at mailman.qth.net
> [mailto:theforge-bounces at mailman.qth.net] On Behalf Of Lon Humphrey
> Sent: Tuesday, May 08, 2007 1:01 PM
> To: Sponsored by ABANA
> Subject: Re: [TheForge] carbon banding in 52100 steel
>
> i put up pics on my 360 page
>
> take a look
>
> http://360.yahoo.com/redneck_43055
>
>
> ----- Original Message -----
> From: "Lon Humphrey" <ironcrossforge at roadrunner.com>
> To: "Sponsored by ABANA" <theforge at mailman.qth.net>
> Sent: Tuesday, May 08, 2007 12:51 PM
> Subject: Re: [TheForge] carbon banding in 52100 steel
>
>
> > it was made from NEW 52100 steel ....look in the McMaster Car book they
> > sell it new
> >
> > ----- Original Message -----
> > From: "David E. Smucker" <davesmucker at hotmail.com>
> > To: "Sponsored by ABANA" <theforge at mailman.qth.net>
> > Sent: Tuesday, May 08, 2007 12:28 PM
> > Subject: Re: [TheForge] carbon banding in 52100 steel
> >
> >
> >> Was your steel from new 52100?  or from a roller bearing race?  If from
> >> new 52100 stock then I don't have a clue, but if from a roller bearing
> >> race -- a Timken roller bearing race or even the roller then what you
> >> have is not 52100 but deep case hardened steel.  The base steel is close
> >> to a 4120 but in the case the carbon content is raised to levels similar
> >> to 52100.  Not all roller bearings are case hardened, but all of Timken's
>
> >> are made this way.  Some other manufactures SKF, FAG, Torrington use a
> >> mixture of 52100 and case hardening in "ROLLER" bearings.  As far as I
> >> know almost all BALL bearings are 52100.  The use of case hardening in
> >> the Timken Roller bearings is not to save money -- but to make a much
> >> better bearing. Very tough core, with high hardness for the surface area
> >> to a depth of close to 1/16 inch. If you look at an etched section
> >> through a Timken race you can see the depth of the case hardening.
> >>
> >> Dave Smucker
> >> ----- Original Message -----
> >> From: "Lon Humphrey" <ironcrossforge at roadrunner.com>
> >> To: "Sponsored by ABANA" <theforge at mailman.qth.net>
> >> Sent: Tuesday, May 08, 2007 9:55 AM
> >> Subject: [TheForge] carbon banding in 52100 steel
> >>
> >>
> >>> hi all,    ive just made a knife from 52100....i heat thermal cycled it
> >>> 3 times and after the acid etch there is nice latteral banding visable
> >>> ....can somone explane to me what is going on with in the steel that
> >>> makes the bands show up.....ive searched this online and come up with
> >>> nil
> >>>
> >>> i was under the impression that the only type of steel that you could
> >>> get the banding in was true damascus but i know Ed Fowler is getting
> >>> this as well
> >>>
> >>> Lon
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