Aluminium Sampling Furnace

[Barren Realms 007]

They are all about the same toss a coin and make your decision.

 

[goldnugget77]

Thanks fo that info Buddy.

 

[golddie]

http://img838.imageshack.us/i/dscf0044u.jpg/
http://img718.imageshack.us/i/dscf0043q.jpg/
http://img836.imageshack.us/i/dscf0045q.jpg/
http://img80.imageshack.us/i/dscf0046e.jpg/

Question about the black pipe
the fact that its not welded will this be a problem
the other parts are all welded
should i use the furnace without that pipe



Question about the broken handle on the burner
everything on the handle is fine will that broken handle be a problem

Question about the refractory
I didnt order enough material so as you can see the can was not completely filled
and i wasnt able to make a cover so I have to do something about that and also

Question about pipe in refractory
that pipe is not supposed to be there and I cant remove it
someone said use axle grease and i did that but it is stuck there
maybe i didnt use enough grease
what should i do about that
I am thinking of leaving it there but i said maybe it will dislodge during when I am using the furnace
and maybe it could be a problem

Thanks

 

[golddie]

Hi Barren
Thanks for your help
Someone told me that if I use the furnace without removing that pipe in the refractory than I might get a bid crack in it so i will try your idea.

about that part where I didn't have enough refractory material I am going to cut it off and it will be a furnace shorter than I anticipated

 

[golddie]

http://img838.imageshack.us/i/dscf0044u.jpg/
I tried what you said Barren and it didnt work and I got to find a way to remove that thing

 

[golddie]

http://img838.imageshack.us/i/dscf0044u.jpg/
I am able to hammer this pipe inward but it wont come out of there.
I tried to turn it and make it loose and that wont work.

 

[Barren Realms 007]

http://img838.imageshack.us/i/dscf0044u.jpg/
I am able to hammer this pipe inward but it wont come out of there.
I tried to turn it and make it loose and that wont work.

Have you tried to use a pipe wrench with a cheater bar on it?

 

[golddie]

Hi Barren
I dont have a pipe wrench so what I did was I took my table wrench which is very sturdy maybe sturdier than a pipe wrench
The reason it goes inwards is because I am able to hammer it very hard but when it come to hammer it the other ways I cant because of the positioning .

 

[oldgeek]

I have a way...But it will not be fun.

Cut pipe off 1 inch from outside furnace wall. Use a metal blade on a sawzall to notch the pipe lengthwise from the inside. 1 cut should give you enough room to squeeze the pipe together and slide it out. If you do not have a sawzall, you could use a hacksaw blade, wrapped with tape. (use it so when you pull on the blade, it cuts) I have used this method on PVC pipe a few times to save a "T" or something else i did not want to have to replace.

Good Luck!

 

[lazersteve]

Place a cap on the pipes external threaded end and then slip a large crescent wrench over the pipe. The crescent should be opened just large enough to slip over the pipe and no bigger. Snug the crescent up tight against lip of the cap on the furnace side. Now take a large sledge and gently tap the crescent wrench away from the furnace body. The cap should give you a edge to push against with the crescent as act as a lever that will force the threads of the pipe out of the refractory.

Steve

 

[golddie]

Hi Steve
This thing is so tightly in there that We have used a sledge hammer and banged it with 2 hands and now we don't have threads anymore.
The reason it goes inwards is because we can smash the pipe so hard that it was able to go in but we are not able to bang it with the same force in reverse
The thing I will probably try is what oldgeek suggested.
Thanks

 

[Barren Realms 007]

If you can't get either one to work. Cut the pipe off close inside and close outside and then get a long blade and cut the pipe in 2 places long the center so it splits and you cn get it out.

 

[Oz]

For whatever reason I cannot see the pics. If I am not mistaken though this is just an iron pipe stuck in refractory. Find someone with an oxy/acetylene torch with a bit of knowledge and just cut it out. I have burned stripped bolts out of an engine block without damaging the threads in the block. That was the last option in that case because both were iron, but in your case it should prove much easier with a thermally resistant wall the pipe is in.

 

[Harold_V]

Find someone with an oxy/acetylene torch with a bit of knowledge and just cut it out.

A reasonable solution, although I'd recommend heating the refractory well before doing so. A considerable amount of moisture will be liberated. Too much too fast in an isolated area can result in a steam explosion, damaging the furnace and offering the risk of injury to the operator.

Harold

 

[golddie]

The metal pipe is out of there and I am surprised that after all that banging with the sledge hammer the refractory didn't break.
I did have to cut the pipe from the inside and it was not fun
so dont do this again just use a pvc pipe
I havent used it to melt anything yet I will let you all know the result

 

[golddie]

http://img718.imageshack.us/i/dscf0043q.jpg/
http://img838.imageshack.us/i/dscf0044u.jpg/
Now that I have removed the pipe and rimmed the top I need to make a cover for this furnace


http://goldrefiningforum.com/phpBB3/viewtopic.php?f=40&t=8487
This is a good idea but not practical in my case.

 

[goldnugget77]

http://img718.imageshack.us/i/dscf0043q.jpg/

The refractory was poured about 6 months ago
Can someone tell me how the prepare something like this before actually using it to melt metal
Since it was poured 6 months ago do you think it might not be necessary to do anything like that
If yes do I burn charcoal or what
Thanks

 

[Barren Realms 007]

http://img718.imageshack.us/i/dscf0043q.jpg/

The refractory was poured about 6 months ago
Can someone tell me how the prepare something like this before actually using it to melt metal
Since it was poured 6 months ago do you think it might not be necessary to do anything like that
If yes do I burn charcoal or what
Thanks

Use you about 3-4 charcoal briquetts and let them burn to heat up and season the refractory after that batch double the amount of briquettes and repeat let this run and double again repeat this till you can fill your furnace up 50% with the briquetts and then run a blower into it and this should season your furnace and not have many problems.

 

[Harold_V]

Yep--I'd do something similar to what Barren suggested. Regardless of how long it's been allowed to sit, it will contain some free water. If it's converted to steam too quickly, you risk a steam explosion. I'd suggest you start by placing a 100 watt light bulb in the furnace for a day or so, allowing it to evaporate as much of the free water as it will. You should notice a difference in the surface, even with such simple heating.

Harold