[TheForge] Mineral Wool

[Jerry Smith]

I have adigital meter that can go above 2200 degrees
and the I have access to a pyrometer that can go up to
2700 degree, that is F not C

Jerry

--- Jeffrey Polaski <jeff.polaski at rgs.uci.edu> wrote:

> >Any comment more than an anecdotal example is not
> going to be
> practical,
> >considering all the variables, including but not
> limited to:
> >Forge design and size
> >Insulating products used
> >Burner design, construction methods, & size used
> >And finally gas input pressure employed.
> Not to be difficult, but it's still be useful if
> five or so people could
> give a temperature and conditions report. It could
> be that
> ITC-100/Plistix raises the measured temp by, say 10%
> - 20%, without
> regard to the exact design of the forge. Most of the
> time people can
> estimate how much propane per hour their forge is
> using, etc... I don't
> think that anyone is looking for absolute scientific
> proof, just that
> it's a reasonable bet. 
> 
> I'd love to make some measurements myself, but I
> don't have any way to
> accurately measure temperature above 700 degrees or
> so.
> 
> 
> 
> 
> Jeff Polaski
> 
> -----Original Message-----
> From: theforge-bounces at mailman.qth.net
> [mailto:theforge-bounces at mailman.qth.net] On Behalf
> Of Kathy
> Sent: Thursday, May 24, 2007 12:11 PM
> To: 'Sponsored by ABANA'
> Subject: RE: [TheForge] Mineral Wool
> 
> Steve Writes:
> "I do wish someone would measure before and after
> with ITC100. So far, 
> all I've heard is anecdotal "it was hotter"."
> 
> Any comment more than an anecdotal example is not
> going to be practical,
> considering all the variables, including but not
> limited to:
> Forge design and size
> Insulating products used
> Burner design, construction methods, & size used
> And finally gas input pressure employed.
> 
> Typical improvements, all other factors being equal
> are:
> >From red to red-orange heat as seen inside forge
> >From red-orange to pumpkin orange
> >From pumpkin to orange-yellow
> >From orange-yellow to lemon-yellow
> 
> With water separation to create colloidal zirconia
> before application of
> reflective layer; a forge capable of going to lemon
> yellow will then
> reach
> yellow-white. If a really hot burner design is then
> turned up, the forge
> interior turns almost pure white, and its ceramic
> blanket will suffer
> immediate
> damage. If yellow-white heat is maintained for more
> than a few minuets
> the
> blanket will suffer the same amount of damage.
> 
> What damage? Large chunks of the coated ceramic
> blanket will peel away
> from the
> insulation and will be blown out the exhaust or
> found on the forge floor
> upon
> cool down; this is caused by shrinkage of the
> underlying blanket below
> the
> coating layer. Even rigidizing will only delay such
> damage should a
> forge is
> taken to heats over those the ceramic blanket is
> rated for.
> Mikey   
> 
> 
> -----Original Message-----
> From: theforge-bounces at mailman.qth.net
> [mailto:theforge-bounces at mailman.qth.net]
> On Behalf Of Steven Smith
> Sent: Thursday, May 24, 2007 7:10 AM
> To: Sponsored by ABANA
> Subject: Re: [TheForge] Mineral Wool
> 
> Both Kaowool and Durablanket are brand names. Within
> each brand name are
> 
> different products designed to work at different
> temperatures. You will 
> be unhappy if you get an inexpensive, low
> temperature wool. I use 
> Durablanket "S".
> 
> I agree with Bruce's recommendation of 2" thick, 8
> pounds per cubic foot
> 
> density. The denser stuff lasts better against
> mechanical damage. You 
> also should put a seal coat on the inside of your
> forge. You make up a 
> sort of mud and paint it on. I use Satanite. More
> expensive options that
> 
> reflect IR and improve the efficiency of your forge
> include ITC100.
> 
> I do wish someone would measure before and after
> with ITC100. So far, 
> all I've heard is anecdotal "it was hotter".
> 
> Steve
> 
> Jerry Smith wrote:
> > Folks,
> >
> > I need a number or a name or something for model
> or
> > brand of mineral wool, I need to buy some mineral
> wool
> > for rebuilding my forge and to build a new furnace
> for
> > melting glass.
> >
> > I am using Frosty's design for the burner, it
> works
> > great for me.
> >
> >
> > Thanks,
> >
> > Jerry
> >
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