Jump to content

New furnace


Kutvonen
 Share

Recommended Posts

My new project take first steps at last.

 

I have a few thought by burning wootz cakes, about a fuel economy and heat cycling.

 

I think at gas furnace is too easy ;) and my favorite energy sources ar coke and charcoal.

 

So, let´s build carbon footprint frendly Wootz oven. :D :D :D

 

Take a pile of firebricks and other stuf for a heart of furnace and start setting.

 

WP_000175.jpg

 

Preheated blow canal between walls.

 

WP_000176.jpg

 

planning cuts for blow, first level on floor.

 

WP_000177.jpg

 

More cut plans and second level.

 

WP_000178.jpg

 

Furnace bottom holes and blow intake

 

WP_000179.jpg

WP_000180.jpg

 

 

 

WP_000181.jpg

 

Double layered back wall and blow holes.

 

WP_000183.jpg

 

Exhaust canals front and side walls.

 

Now I need more bricks(I bought all from local hardware shop) and plan for vaulted roof.

 

And laying of the brick surface of the shell.

 

There is option intensify plans of heat cycling on shell,

I want all possible heat, in heart of furnace...

fresh air to the combustion gases...

coal and anthracite...

 

let´s see...

 

Jandaus

Do not try to forcibly, take willingly a bigger hammer.

Janne Kruunari
aka
B.Sofa


Also known as Jandaus Rahnasto
https://www.facebook.com/borderlandsofimagination

Link to comment
Share on other sites

looks interesting, Janne,

is there anything that I should bring along when you start to fire this little monster? :lol:

like a couple of clay-graphit crucibles?

 

Achim Wirtz gave me a nearly done melt from his tatara left-overs, to do a remelt, in this years solingen fair

a nice and very clean steel with a layer of slag on it - I whish to refine, it will be about 850gr I think

 

I guess bringing firebricks to Finnland from Germany is not really a good idea

:rolleyes:

 

moron

Jokke

Link to comment
Share on other sites

Hi

 

looks like you have nice size furnace, maybe big enough to put couple of crucibles in there

-do you put the crucibles on a pedestal to raise them off the floor?

 

only experience i have with using coal for furnace gave me problems... i had too much air blast and the heat was too much, and ate a hole in bottom of crucible....

 

i only wish i could use coal again, now i live in a town and can't use it

 

good luck on melting steel !

 

Greg

Link to comment
Share on other sites

Thanks for comments.

 

I´ll try to find right mix of different fuels to manage one fill, preheat with wood/charcoal and fill mixed/layered coal, coke, charcoal and some athracite maybe. want to keep slag easily removed and minimium amount of it.

Raching good efficiency cycling gases and heat

 

 

now adays I use piece of 1"firebricks under 2"firebrick block.

12032011827.jpg

 

 

1"firebrick lid, I use timbermans full graphite "pencils" rubbed oppocite surfaceses to keep them loose together, and thin layer satanite/wooddust 50/50% DSC03916.jpg

 

First sets go with thiskind of pedestal, too much work, pieces of brick do a same thing.

11012011733.jpg

 

Jokke, I think that I have crusibles enough :).

don´t know, but I try to get this dry and ready for next week.

IMAG0246.jpg

 

Janne

Do not try to forcibly, take willingly a bigger hammer.

Janne Kruunari
aka
B.Sofa


Also known as Jandaus Rahnasto
https://www.facebook.com/borderlandsofimagination

Link to comment
Share on other sites

Thanks for comments.

 

I´ll try to find right mix of different fuels to manage one fill, preheat with wood/charcoal and fill mixed/layered coal, coke, charcoal and some athracite maybe. want to keep slag easily removed and minimium amount of it.

Raching good efficiency cycling gases and heat

 

 

Jokke, I think that I have crusibles enough :).

don´t know, but I try to get this dry and ready for next week.

IMAG0246.jpg

 

Janne

 

Janne,

Good luck on this project....is he slag your coke produces glassy or dry and crumbly ( I hope it is crumbly and not glassy) . There was a furnace somewhat similar on the German knife making site about 2 years ago Jokke may know who built it..maybe worth seeing.

 

I love "Bloomers and Buttons"... because of experiments like this one

Jan

Edited by Jan Ysselstein
Link to comment
Share on other sites

  • 2 weeks later...

Teaser.

 

Thursday afternoon J&J and (Allmost)boiling steel.

 

DSC_2986.jpg

 

 

...More info&pics coming soon.

 

Jandaus

 

..Edit link

Edited by Kutvonen

Do not try to forcibly, take willingly a bigger hammer.

Janne Kruunari
aka
B.Sofa


Also known as Jandaus Rahnasto
https://www.facebook.com/borderlandsofimagination

Link to comment
Share on other sites

Teaser.

 

Thursday afternoon J&J and (Allmost)boiling steel.

 

DSC_2986.jpg

 

 

...More info&pics coming soon.

 

Jandaus

 

Janne,

I knew something was up, unless your family name is Salamander. I am glad it is working for you....I have rarely heard a person say, I am changing methods because this method is too easy.

Good luck forging.

Jan

Edited by Jan Ysselstein
Link to comment
Share on other sites

Jan,

I don´t know how many times I must bang my head on wall before I give up, but.

 

This is my first multi crucible run and almost only charcoal, I learn few things:

I can do this right, but fuel burn faster than I assume and next run I fill it faster and a bit more blow.

Adding coke or/and some anthracite with charcoal i reach higher temp and long lasting burn.(I think)

 

Using charcoal with wootz smelt be caused by situation to get it allmost free.

 

There is many other things to do before I give up and I´m sure to get this working.

 

I dont change my metod but want to try this, because few ingots is more than one :D

 

Janne

Edited by Kutvonen

Do not try to forcibly, take willingly a bigger hammer.

Janne Kruunari
aka
B.Sofa


Also known as Jandaus Rahnasto
https://www.facebook.com/borderlandsofimagination

Link to comment
Share on other sites

moikka,

ja kiitos vimeisestä, Janne!

 

It was very interesting to follow a multifiring of crucibles,

the oven works fine, and as Janne wrote, it needs a bit more air to come up to temps,

the charcoal used was a bit wet though - and for my feeling the space a bit niffty for five crucibles.

but with some more coal or cokes in the mix it should work fine.

Janne cleaned out the airchannels with a vacuum first, putting the crucibles on little "posts" about 3-4 inches high, they sat on the airholes and had little grooves cut in the undersides for the airflow

we did smallen the pieces of charcoal before showelling them inside

 

the cake out of the biggest crucible in the middle turned out to look quite nice

two of the smaller ones looked like half cooked, with rests of the iron baked together on their tops

 

quite a workspace there I must admit

 

and a perfect day to learn more Finnish

 

I loved being there a lot

 

and man: Janne, you do have some very fine "visa-koivu" 'Betula pendula var. carelica' :lol:

 

we will stay in touch

 

@ Jan: not salamander - although by the way he is using fire one might think so, but "kruunu" means crown, kruunari: "for details look at Janne`s answer"

Edited by Jokke

Jokke

Link to comment
Share on other sites

OT.

Jan, jokke.

 

Kruunari are title for person Who worked for the king.

Kruunari mesured and "stamp" with King´s die, different kind things,

weight scales, tar barrels, wooden and tin plate measuring cups....

King need taxes and booking is important for counting and collecting taxes

And Who want pay tithes more than you need even nowadays.

everybody will try to fool kruunari in many different ways.

 

Janne Kruunari :rolleyes:

 

ps. Here are 22 people who will have the last name Kruunari, and it is protected name.

Do not try to forcibly, take willingly a bigger hammer.

Janne Kruunari
aka
B.Sofa


Also known as Jandaus Rahnasto
https://www.facebook.com/borderlandsofimagination

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

×
×
  • Create New...