Jump to content

Small Tatara Firing Schedule


Dan O'Connor
 Share

Recommended Posts

I found a blog by a lady teaching English in Japan. She attended a demo Tatara put on for a elementary school conducted by Kihara-murage-san.

 

She got some pretty good pictures and made a decent write up.

 

Part one

 

Part two

 

One of the pictures was of their firing schedule. Most of it is apparent but can anybody translate the Japanese on the sheet. Particularly what do the numbers mean after the weight of the iron sand and charcoal charges?

One column increases from 7.9 to 27.9. The other 49 to 71????

 

I also thought the temp recordings of the top and bottom of the stack a good catch.

 

DSCN7669.JPG

Link to comment
Share on other sites

Jesus is right:

>>7.9 to 27.9. The other 49 to 71????<<

is probably the second page of their recordings

putting in 0.8kg of ironsand (later 1kg!) to 1kg of charcoal each time (showing the totals in the next column)

 

the lady described the procedure, but sometimes used wrong terms, like mentioning "steel" coming out the tatara, which was actually "slag", you can see from its flow how good the smelt is going on, reducing the Fe0x to Fex (with some C in it as well = steel),

the temps described are rather low, though

 

so they did not have a smith around who could have worked on that nice lumb of iron/steel

too bad

Edited by Jokke

Jokke

Link to comment
Share on other sites

Thanks for the links. Unfortunately my browser does not display the images for that website.

 

Those columns show "running sums" 累計

 

 

Well Duh,

 

That makes sense now. So the charcoal column is the total charcoal loaded in this furnace from the beginning before any iron sand was loaded?

 

Jesus

I saved the pictures and will post them when I get home later today.

Link to comment
Share on other sites

 

so they did not have a smith around who could have worked on that nice lumb of iron/steel

too bad

 

Jokke,

 

I believe they will bust it up and separate it out into the various parts (high carbon steel, low carbon steel, cast iron etc.) Then work those individually.

Link to comment
Share on other sites

yep,

normally they do that

but not this time in the description of the lady

 

as far as I understood they left the big chunk for looking at it (not good enough for swords?! as she puts it in the end)

 

you can take a look here:

http://www.messerforum.net/showthread.php?t=86207

where Achim Wirtz describes his version of a tatara he ran in Germany last year

I had the oportunity to be there, when they opened the tatara and took out over 400kg of steel

that mostly looked like this:

http://www.messerforum.net/showthread.php?t=96993

 

and you can bet that this was used for blades!

Jokke

Link to comment
Share on other sites

This appears to be the same situation as Kihara San ran twice in Minnesota in 2004.

He is a knowledgeable man who loves the steel.

 

Jokke,

Why are the air tubes angled up in Achim's furnace? Seems counter productive and will lead to a rather porous kera.

 

Ric

Richard Furrer

Door County Forgeworks

Sturgeon Bay, WI

Link to comment
Share on other sites

I found a blog by a lady teaching English in Japan. She attended a demo Tatara put on for a elementary school conducted by Kihara-murage-san.

 

She got some pretty good pictures and made a decent write up.

 

 

Dan,

Thanks for sharing the links, I find the building of the furnace most interesting.

 

Jan

Link to comment
Share on other sites

yep,

normally they do that

but not this time in the description of the lady

 

as far as I understood they left the big chunk for looking at it (not good enough for swords?! as she puts it in the end)

 

 

 

I forgot she said it would not be used for swords.

I wonder what is not good enough about it?

Link to comment
Share on other sites

Thanks for the links. Unfortunately my browser does not display the images for that website.

 

Those columns show "running sums" 累計

 

Jesus here are the pictures.

All pictures form the blog Adventures Abroad

 

Iron sand

16469_700961780018_20703243_41163259_241260_n.jpg

 

Separating sand

16469_700961770038_20703243_41163257_2135938_n.jpg

 

 

Tatara base

16469_700961809958_20703243_41163265_483270_n.jpg

 

Building Tatara

16469_700961814948_20703243_41163266_5349668_n.jpg

 

 

Chopping charcoal

16469_700961824928_20703243_41163268_4945202_n.jpg

 

Collage

16469_700961740098_20703243_41163251_973648_n.jpg

 

Tatara side

 

16469_700961750078_20703243_41163253_2553961_n.jpg

Link to comment
Share on other sites

Firing

16469_700961755068_20703243_41163254_8291530_n.jpg

 

Charcoal load

16469_700961720138_20703243_41163247_4753325_n.jpg

 

Wide view

16469_700961794988_20703243_41163262_1371568_n.jpg

 

Loading

16469_700961730118_20703243_41163249_339323_n.jpg

 

Slag

16469_700961804968_20703243_41163264_3262024_n.jpg

 

Lecture

16469_700961834908_20703243_41163270_7482892_n.jpg

 

Extracting Bloom

16469_700961839898_20703243_41163271_4283090_n.jpg

 

Cooling Bloom

16469_700961869838_20703243_41163277_5276672_n.jpg

 

Kera

16469_700961879818_20703243_41163279_6166578_n.jpg

 

16469_700961874828_20703243_41163278_2990835_n.jpg

Link to comment
Share on other sites

I wonder why your not seeing them Jesus?

You likely have seen these before though. I know I had a while back.

Nice little square stack, about the size of a 12 in tile rig. It looks like they had 3 tuyere ports all on one side.

 

Mark

Mark Green

 

I have a way? Is that better then a plan?

(cptn. Mal)

Link to comment
Share on other sites

I am using Google Chrome. May some compatibility problem. But a kind hand has send the pictures to my email address. :D This looks like the kodai tatara that was demonstrated by Kihara here years ago and that he demonstrates to middle school children in Japan year round.

Enjoy life!

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...