[TheForge] OT biodiesel

[Chuck Robinson]

Hey Michael,
My question isn't simple curiosity, I'm trying to use atmospheric burners to
easily reach welding heat for my Damascus.
Measuring the temp isn't the problem. I have a calibrated.optical pyrometer.
$125 E-Bay that reads to 3200 F
My forge is lined with inswool HTZ 8# rated for 2700 F and the wool is
coated with Satenite rated for 3200 F.
I'm running 3  3/4" "T-Rex" burners that Ron Reil  says are twice as
efficient as his burners.
Depending on the ambient temperature I can get the forge to about 2450F on a
good day.
If I switch out the atmospheric burners and substitute 1 blown burner I can
reach 2800 F in the same forge.
At the BBS in April  I measured the output of the Reil burner  on the
demonstrators propane forge, when  Mardi  Mesheja was unsuccessfully
attempting the weld up TI Damascus.
The burner maxed out at 2300 F. The forge would only reach 2600 F after
blowing compressed air into the burner bell.
Chuck

----- Original Message ----- 
From: <Keporter at aol.com>
To: <theforge at mailman.qth.net>
Sent: Monday, May 30, 2005 11:17 AM
Subject: Re: [TheForge] OT biodiesel



In a message dated 5/30/2005 8:17:57 A.M. Pacific Standard Time,
robi5515 at bellsouth.net writes:

I'd like to  hear from anyone who uses an atmospheric propane burner of any
design that  actually has accurately measured a forge temperature hotter 
than
2500  F-
with out usig auxilliary O2,  compresser air or a blower  boost.
Chuck



Chuck
Accurately measured with what? If you're looking for scientific proof,  I
don't think you're going to find a blacksmith investing in that kind of
equipment out of simple curiosity. Even my own curiosity doesn't cover that 
kind of
money. An IR thermometer costs about $100 for a thousand degree range;  by
sixteen hundred degrees the unit is $500. Whatever you plan to  measure
twenty-five hundred degrees with is going to be quite expensive. I  believe 
at that heat
you will be dealing with UV sensors attached to  computers running special
software. You could order a Tempilstiks® marker crayon, but they only go up 
to
2500--not beyond it. Then, there would be  the problem of shielding it from
the flame...
    However, you can find a fellow casting chrome steel  (that takes more
like 2800 degrees to reach pouring temperature) in a furnace  run with 
nothing
more than an old fashion Reil type burner. You can look it up  on his web 
site).
Most blacksmiths use ceramic fiber in their forges, which  is only rated to
2300; if you're looking to find out anything about higher  temperatures, you
need to involve your self with foundry work; try Hobbicast,  (aYahoo 
newsgroup).
Michael Porter
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