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Iron smelting in the early medieval slag drop shaft furnace, making iron 

officina ferraria
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Because of Covid-19 the Long Night of Museums in many museums was canceled but some of them decided to do something despite the virus. Historical and archeological Museum in Elbląg prepared a virtual show about the metallurgy in Truso - Viking age emporium.
#officinaferraria

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13 май 2020

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Комментарии : 108   
@paulorchard7960
@paulorchard7960 2 года назад
Tough work six hundred years ago no easier today to recreate the simple history! Thanks guys, really interesting!
@joshschneider9766
@joshschneider9766 8 месяцев назад
By the fourteen hundreds they had blast furnaces that totally took over for these and rendered them completely antiquated.
@timberwolf1575
@timberwolf1575 3 года назад
Excellent work. Understanding how much work this is/was makes you appreciate modern furnaces, blowers, and power hammers more. A lot of blood, burns, and sweat goes into a smelt.
@alexadamson9959
@alexadamson9959 Год назад
This must have been one of the most shitty jobs ever. But at the same time, you look absolutely badass doing it. There’s something about dragging a ball of flaming metal around and then proceeding to beat the shit out of it with a hammer that commands respect.
@3vanguardofthephoenix335
@3vanguardofthephoenix335 Год назад
I think emptying chamberpots would be more... shitty
@Allyourbase1990
@Allyourbase1990 3 месяца назад
I’ve always wondered how they got furnaces hot enough to melt Metal back then . This is so cool
@cvdheyden
@cvdheyden 26 дней назад
Good job guys!! A huge loop, very impressive!
@dieselphiend
@dieselphiend 2 года назад
I have to say, this is ideal as opposed to an automatic blower. You have so much more control over the amount of airflow at any given time. I was just watching another video in which the blower was so strong it was blowing their ore and charcoal right out the top. It's just more work.
@officinaferraria
@officinaferraria 2 года назад
Yes. U r right, bellows gives much more control to the process and are more historical one.
@bonbonpony
@bonbonpony 2 года назад
It also seems to be a good idea to have two bellows to work in parallel, as in this video. Then one of the bellow is still blowing while the other one is restoring, maintaning a constant flow of air :)
@jonash5320
@jonash5320 Год назад
@@officinaferraria did you end up with cast iron due to all the coal? If so how do you reduce the carbon content of the iron to more useful concentrations?
@officinaferraria
@officinaferraria Год назад
@@jonash5320 i can control carbon content by charcoal/ore ratio. Less charcoal gives less carbon in the bloom (in theory of course)
@sygnusadun4832
@sygnusadun4832 Год назад
@@officinaferraria whats your ideal ratio? I see many people saying that 500g of ore to 2kilo of charcoal.
@NSP70
@NSP70 Месяц назад
No eye protection. Brilliant.
@fourgedmushrooms5958
@fourgedmushrooms5958 Год назад
Looks like fun! Love the hand forged bucket ❤
@Illien0
@Illien0 Год назад
Good video, thankyou for posting!
@thiernosow11
@thiernosow11 16 дней назад
Incredible, this is exactly how we do it in Africa too, funny how we came up with the same ideas while separated by thousands of kilometers
@py2rpjrubens450
@py2rpjrubens450 Год назад
A Big job! TNX for sharing! 73 from Brasil
@jawdatfares2831
@jawdatfares2831 3 года назад
Thanks again that was awesome to see keep up the good work we love you guys,,,that was awesome,,,we ont Moore of this project, s
@MrThijzer
@MrThijzer 5 месяцев назад
Very well done, especially the bloom forging !
@officinaferraria
@officinaferraria 5 месяцев назад
Thank you Thijs :-)
@varun009
@varun009 Год назад
Besides trapping, the American fur trade, which resulted in many of America's great trails being blazed, was carried on the back of steel. Native Americans would trade many pelts for steel in the form of knives initially and later hammers and raw stock. Very interesting stuff. I was in a village in India about 17 years ago and my mother thought to bring them some mirrors. I remember us giving out these tiny 6x6 mirrors and they were stoked! Apparently, they only had one in the village and it in the bathroom of a government building. People rarely had access to it. It's so easy to take for granted the technological, industrial and logistical apatatus that makes mirrors (something once highly prized) something disposable. Amazin.
@Hyratel
@Hyratel Год назад
and we're now on like... 5th or 6th iteration of "mirror" - first was highly-polished copper or brass (very high maintenance), then came proto-industrial glass and Silvering processes making a Silver-on-glass mirror an elite luxury. then the advancement to Float Glass brought it to the masses. and then more recently we've shifted from Silver backed mirrors to Aluminum backed mirrors
@user-uk9wf5yw7x
@user-uk9wf5yw7x 2 месяца назад
Just what I need for my students thanx!
@richardcook555
@richardcook555 3 года назад
Do you add any flux like limestone or shells with your charcoal and ore? Do you roast the ore first? Very nice video.
@officinaferraria
@officinaferraria 3 года назад
I do not use any flux. No, In this experiment I didn't roast the ore (it is hematite ore and roasting is not necessary)
@romelcasillas2286
@romelcasillas2286 7 месяцев назад
*in the old days* "Hey guys, let's heat up some dirt and when it's all cool looking let's beat it with big hammers to see what we can make". 🤣
@JS-jh4cy
@JS-jh4cy Месяц назад
Good, way to work up a sweat, and getting something useful done, rather than just going to a damn spa
@evgeniykhalzov4725
@evgeniykhalzov4725 Месяц назад
Интересно еще и литьё бронзы. Как древние металурги догадались совмещать медь и цинк, что.ы получилась бронза. Хотя железо это тоже интересно.
@officinaferraria
@officinaferraria 21 день назад
copper and zinc alloy is brass, bronze is copper and tin alloy.
@domenigo97
@domenigo97 Год назад
Very well done I would love to know how high the carbon content is at this point. Am I right if I assume that it is rather high? I really don't know much about metallurgy
@officinaferraria
@officinaferraria Год назад
The carbon content in the iron bloom depends on the temperature in the furnace and the charcoal/ore charging ratio. Usually, it is rather low carbon content. Low carbon, soft iron this is result what we want to get.
@domenigo97
@domenigo97 Год назад
@@officinaferraria Allright, thanks for the explanation 👍
@newageofsail3877
@newageofsail3877 3 месяца назад
@@officinaferraria But then not so very useful for knives, axes, swords, gun barrels, that need to be high-carbon, high-tensile steel.
@thurst6510
@thurst6510 3 года назад
Bad ass!
@caladin002
@caladin002 4 года назад
How do you know how high/low to punch the hole to bleed off the slag?
@officinaferraria
@officinaferraria 4 года назад
when slag starts to block the blowing hole than i make a hole about 5-10 cm below slag level.
@tothista4477
@tothista4477 3 года назад
Super big bog!
@dogodogo5891
@dogodogo5891 3 года назад
hi this is so amazing, if u had ore with low enough granular size say almost like talc powder, will it reduce energy consumption and increase yield of pure Fe?
@officinaferraria
@officinaferraria 3 года назад
rather no.
@dogodogo5891
@dogodogo5891 3 года назад
@@officinaferraria any reason?
@branni6538
@branni6538 2 года назад
@@dogodogo5891 iron yield=yes. Energy consumption=no. There are ways to conserve energy and lesson the consumption of energy expenditure both in terms of carbon char used and bowls of porridge used to pump the bellows. None of which are shown here. You,'ll have to figure it out.
@GeorgiDimitrovX
@GeorgiDimitrovX Год назад
Crazy how they filmed this in the 14th century
@officinaferraria
@officinaferraria Год назад
X century:-)
@Barmaley80x
@Barmaley80x 25 дней назад
Сложнее всего было с цифровыми носителями.
@rogerthedodger5788
@rogerthedodger5788 3 месяца назад
We are witnessing the death throws of the bronze age. A huge technological leap for mankind. A metal that could be repaired if broken unlike bronze.
@user-ug5sb6qg1u
@user-ug5sb6qg1u 15 дней назад
Bronze can be forge welded, it's just easier to recast it. The only advantage iron has over bronze is added strength and wear resistance.
@juozaskavaliauskas8844
@juozaskavaliauskas8844 Год назад
Labai patiko!
@bonbonpony
@bonbonpony 2 года назад
Skąd wzięliście rudę i jaki to rodzaj rudy? Ciemny proch, więc wygląda na magnetyt.
@officinaferraria
@officinaferraria 2 года назад
To jest przeprażony hematyt. O ile dobrze pamiętam to kanadyjski.
@christianvoss8614
@christianvoss8614 Год назад
The beginning of this video sounds like inside of Mordor or something
@JS-jh4cy
@JS-jh4cy Месяц назад
Shit, almost burnt the cottage or house down
@MrWTPunk
@MrWTPunk 3 года назад
Good work, good video 👍 It is so silent without electric blower... Was the bloom containing a good amount of carbon? Also, do you know of to obtain high carbon steel everytime? Maybe letting the bloom longer in the furnace?
@officinaferraria
@officinaferraria 3 года назад
the goal of this experiment is to get low carbon alloy. I carburize it in different process. To get high carbon bloom directly in the furnace, the ore/charcoal ratio must be changed, more charcoal less ore. The hard wood charcoal gives usually better bloom carburize.
@MrWTPunk
@MrWTPunk 3 года назад
@@officinaferraria Thank you for your answer. If I link good in my head, you carburize it in an Aristotle furnace, after. Why? What are the advantages to get iron and then proceed to another step to get steel? Good to know for hardwood. Do you know both ratios? Sorry for the amount of questions
@MrWTPunk
@MrWTPunk 3 года назад
@@officinaferraria I was thinking about it... Maybe what you get after you carburize the bloom is near Oroshigane, so the steel you get doesn't need to be welded "at nauseam"?
@bonbonpony
@bonbonpony 2 года назад
@@MrWTPunk My guess is that it's better to carburize it afterwards because the iron is more clean at that time, and it might be easier to control the proportions. Also if you add more carbon to the bloomery, it might get wasted anyway during the processing later, so it would be rather pointless.
@r0llinguphill483
@r0llinguphill483 3 года назад
Man I love staring at a bucket while they work the bloom
@onanysundrymule3144
@onanysundrymule3144 2 года назад
Kind Sir, what would be the proportion/ratio of iron ore to charcoal, by measure of weight please. Kind regards.
@officinaferraria
@officinaferraria 2 года назад
ratio is 1:1
@jessicag630
@jessicag630 5 месяцев назад
Great re-enactment. Do you have any videos discussing where they sourced the iron ore and how they recognized and collected it?
@officinaferraria
@officinaferraria 5 месяцев назад
No, but I am thinking to make a video about iron ores.
@joshschneider9766
@joshschneider9766 8 месяцев назад
Ive always wondered if it would be nore efficient to powderize the charcoal. And maybe mix with the ore and maybe charge both at once. Melting silica mix down into glass for blowing and casting is sooo much easier.
@officinaferraria
@officinaferraria 8 месяцев назад
For the smelting process to proceed properly, spaces are needed between the pieces of charcoal, pulverization will result in loss of circulation in the furnace.
@newageofsail3877
@newageofsail3877 3 месяца назад
@@officinaferraria In traditional Japanese tatara smelting, the tatara is initially loaded with alternating layers of river sand and charcoal, then lit, then more charcoal is added during the smelting process. See this video of the Nittoho tatara smelter: (ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-oWweI-oWj0Q.html).
@SenorTucano
@SenorTucano Год назад
How much of the iron bloom is lost in the hammering process?
@officinaferraria
@officinaferraria Год назад
during whole iron bloome processing (compacting by mallets, forging, and forge-welding) there is 50% to 70% losses of the original weight.
@abab-gj4dd
@abab-gj4dd Месяц назад
what type of hat is that in the thumbnail preview?
@SreyleakSy
@SreyleakSy 2 месяца назад
Hero❤
@raphlvlogs271
@raphlvlogs271 3 года назад
why were they using wooden hammers?
@officinaferraria
@officinaferraria 3 года назад
The iron bloom is very brittle just after extraction from the furnace that why we use a "soft" wooden hammer and wooden anvil.
@wullebulle123
@wullebulle123 2 года назад
what is that lava flowing out made of
@officinaferraria
@officinaferraria 2 года назад
It is slag. Mostly it is iron silicate.
@ryangreen1588
@ryangreen1588 7 месяцев назад
keeping it real medieval with lack of safety glasses lol...
@indicator27
@indicator27 19 дней назад
to what purpose does the layer of dirt serve, separation from the wood ash from i assume logs to start that fire, and the real charcoal, to burn it slower? WHOAAAAA THAT ISNT A FLAMING INGOT THAT IS A METEORITE
@kevinstacey2231
@kevinstacey2231 3 года назад
Artisian iron?
@user-pv6cl3oo4p
@user-pv6cl3oo4p 27 дней назад
how many kilograms of coal does it take to make an iron?
@officinaferraria
@officinaferraria 21 день назад
about 40 kg
@user-pv6cl3oo4p
@user-pv6cl3oo4p 21 день назад
@@officinaferraria thanks
@Zx_Wizard
@Zx_Wizard 2 года назад
Красавцы! Глаза берегите! Почему не все в очках работают?
@alexa.davronov1537
@alexa.davronov1537 Год назад
Хопа, русскоговорящий! Тоже историю металлургии изучаем? Печь называется сыродутой.
@intactsaphir5191
@intactsaphir5191 3 года назад
bonjour, combien de tonnes de bois pour fabriquer 1 kg de fer?
@hmidasliman6504
@hmidasliman6504 2 года назад
100 kg peut etre?
@dieselphiend
@dieselphiend 2 года назад
Why not let the entire thing just cool slowly? Let it sit a full 24 hours before breaking open. Wouldn't that produce a better end product?
@officinaferraria
@officinaferraria 2 года назад
The iron bloom must be extract as hot as possible if not there is no way to clean it up (there is lot of slag which should be remove) and compact.
@dieselphiend
@dieselphiend 2 года назад
@@officinaferraria Couldn't you just reheat it for consolidation?
@officinaferraria
@officinaferraria 2 года назад
The iron bloom inside the furnace is cover by slag and when the slag is liquid it is easy to remove it. The bloom extraction when the furnace is cool down is very difficult so that's why we do it when the furnace is still hot.
@dieselphiend
@dieselphiend 2 года назад
@@officinaferraria Thank you for the explanation.
@richardwilloubly8285
@richardwilloubly8285 8 месяцев назад
Enjoy your work but fear of the metal can’t come into the forge.but he will learn
@alauda525
@alauda525 3 года назад
Кузнецы-колдуны, что с огнём играют🔥
@abdalrohmanmousa7405
@abdalrohmanmousa7405 17 дней назад
This is the worst kind of steal you could buy
@mohamadourika4031
@mohamadourika4031 Год назад
👍🌹🌹🌹🌹💌
@jeancollin8224
@jeancollin8224 4 месяца назад
Der Titel ist nicht korrekt. Eisen ist das Resultat der EisenERZverhüttung!
@user-ug5sb6qg1u
@user-ug5sb6qg1u 15 дней назад
What do you think that red powder they put in the furnace was, paprika?
@Ziom56_Raksek
@Ziom56_Raksek 4 месяца назад
Polak potrafi
@erossutrisno
@erossutrisno Год назад
the grass were ruined
@timhaakenson916
@timhaakenson916 5 месяцев назад
IM DOING THIS TYPE OF SHlT ANYWAY
@stephaneduena6177
@stephaneduena6177 3 года назад
La flamme n'est pas belle
@user-dx1ty8nl8c
@user-dx1ty8nl8c 4 месяца назад
С чужого видео копирует вор.
@andrezweerus1612
@andrezweerus1612 Год назад
Next time a woman complains about men 'never knowing the pain of childbirth', show her this 😄
@officinaferraria
@officinaferraria Год назад
:-)
@pedrogarzagarciadetrevino9530
@pedrogarzagarciadetrevino9530 22 дня назад
Boring!
@user-go9qs8ip2u
@user-go9qs8ip2u 7 месяцев назад
После такого видео на обычный молоток или гвозди смотришь немного другими глазами... Мы избалованы современной металлургией.
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