Furnace liner?

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46WDX
Posts: 3
Joined: Sun May 06, 2012 10:54 am

Furnace liner?

Post by 46WDX »

I have not YET built a furnace but am gathering all that is needed. I make a regular trip to the local landfill and almost always walk away with something cast. (aluminum and/or iron) I found a 10" steel pipe about 1/2" thick. It seems that a lot of folks have had problems with the "hotface" failing after extended use. Could I use this as a liner inside the hotface to extend its life?
Thanks for your thoughts.....
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Jammer
Posts: 1488
Joined: Thu Jun 02, 2011 4:04 pm
Location: Ohio

Re: Furnace liner?

Post by Jammer »

Welcome to the forum!
You could use the pipe as the furnace for a while, just shoot a burner in at the bottom. It should melt Aluminum fine for a while. It will oxidize pretty bad and may get ugly. It won't be very effiecient but could be OK for starting out. Nothing beats a good insulated furnace with a 3000 F hotface.
quando omni flunkus moritati 8-)
F.C.
Posts: 560
Joined: Sat Jun 04, 2011 10:28 am

Re: Furnace liner?

Post by F.C. »

Depends on your furnace/burner design. I built a nice furnace with 4" castable refratory out of a hot water heater shell. Used a nice 1" thick ships mast steel ring (with castable refractory inside it) as a crucible base. During the maiden burn out to test the furnace for output it wasn't long before I noticed the port where the fuel/air mixture went into the side was glowing red, then yellow then scary white. I shut down the blower/gas then pulled out the blower tube and out poured white hot steel. All but a few inches of the ring had melted and began backfilling the burner tube. End result... a lot of clean up inside my furnace... however, the performance of my furnace was AWESOME!! :lol:
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