Furnace Build - Printable Version

Furnace Build - Printable Version

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Furnace Build - RobWilson - 02-19-2012

Afternoon Lads

I have posted this else were , but i thought it may be of interest here , probably way way too many photos ,, and a few of you lads may nod off before getting to the end Rolleyes

Here is a shot of my old furnace set up i built many years ago .
[Image: normal_Image00019.jpg]

It can handle an #12 crucible , the one on the right the other is a #8
[Image: normal_Image00002~0.jpg]

The reason for the new furnace build is i want to cast larger parts , below is a #16 salamander crucible
[Image: normal_Image00004~0.jpg]

The new furnace will handle a couple of sizes larger than #16.

Right here is the start ,,, an old chemical drum ,,,,,, very interesting LOL
[Image: normal_Barrel.jpg]

This was then cut down .
[Image: normal_Main%20Body.jpg]

From the bit left over a ring was cut to form the lid . notice i cut the lid section to incorporate the bead , this is so that the refractory will have something to lock into .
[Image: normal_Lid.jpg]

Not wanting to waist the nice rolled bead from the top of the drum i thought i would re-use it and spot welded it to the top of the cut down drum .. ignore the hand in shot this was removed .
[Image: normal_Top%20Bead.jpg]

Next up are a few shots of the lid lift /swivel mechanism.

[Image: normal_Lid%20Rod%20Fitted.jpg]

RE: Furnace Build - RobWilson - 02-19-2012

[Image: normal_P1110007.jpg]

Then the blast pipe was made and fitted to the barrel .
[Image: normal_P1120007.jpg]

Now we need a centre form .
[Image: normal_P1120003.jpg]

With that done its time to pore the refractory Big Grin

the bottom was pored to about 4" thick ,( remembering to blank off the blast pipe )and aloud to go green .
[Image: normal_45kg.jpg]

The centre then fitted .
[Image: normal_P1130004.jpg]

and the wall rammed up .
[Image: normal_P1130005.jpg]

much of the same for the lid , the lid was sealed to the sheet on metal with silicon ,stops it moving about and is easy to peal off later
[Image: normal_P1130007.jpg]

Centre removed .
[Image: normal_P1140005.jpg]

With the lid fitted , the tie rods were adjusted so that when the lever is pulled down the lid lifts level .
[Image: normal_Lid%20Gap%20Ajusted%20Parallel.jpg]

[Image: normal_Lid%20Gap%20Ajusted%20Parallel.jpg]

RE: Furnace Build - EdK - 02-19-2012

Rob,

What did you use to cut the drum? The cuts look so straight I'm wondering how you did that. :huh:

Thanks,
Ed

RE: Furnace Build - RobWilson - 02-19-2012

and the rod adjusted by filing a bit off so that when the lid is close it sits on the furnace and not on the cam , causing a gap between the lid and body
[Image: normal_P1150003.jpg]

Job done ,,,,,nearly ,,,, Rolleyes

I was going to use the furnace outside , but gave up due to the UK weather and decided i must be able to run the furnace indoors .

So i cut an exhaust into the back of the furnace and added some insulation .
[Image: normal_P8190084.jpg]

Cut a hole in the shop wall for the exhaust .
[Image: normal_P8210086.jpg]

Just a note i am re using the fan burner unit i built for the smaller furnace

And a chimney
[Image: normal_P1020102.jpg]

The melted guttering was from previous tests Rolleyes

Now whatever the weather i can cast , with the insulation on the furnace and with the venturi action of the 4" furnace exhaust going into an 8" pipe the shop stays cool .

Cheers Rob

RE: Furnace Build - RobWilson - 02-19-2012

(02-19-2012, 12:37 PM)EdAK Wrote: Rob,

What did you use to cut the drum? The cuts look so straight I'm wondering how you did that. :huh:

Thanks,
Ed

Hi Ed

I used an angle grinder with a 1mm thick blade free hand Big Grin

Rob

RE: Furnace Build - EdK - 02-19-2012

I figured you used an angle grinder. I know I couldn't cut it that straight.

Ed

RE: Furnace Build - chucketn - 02-19-2012

Nice, Rob. Got to build me something like that.

RE: Furnace Build - ETC57 - 02-19-2012

Very nice Rob,

I keep looking at different designs so far for simplicity and function I would have to say +1 to you.

Jerry. Big Grin

RE: Furnace Build - DaveH - 02-19-2012

Rob,

Great looking furnace:):):)

So nicely made, even the flue/chimney is a work of art:):):)

Nice post Rob, well shown as well:)
:)
DaveH

RE: Furnace Build - RobWilson - 02-19-2012

(02-19-2012, 01:08 PM)EdAK Wrote: I figured you used an angle grinder. I know I couldn't cut it that straight.

Ed

Sorry Ed :(

I had marked a line around the drum to follow and really took my time doing the cutting .

Rob