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nprovos

Hearth Steel Ala Emiliano

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I wanted to share some photos from a recent hearth steel experiment we ran. The setup replicated how Emiliano has been producing hearth steel. Our protocol may have been slightly different:

  • Input: Mild Steel (1in x 1/2in x 5/16in) and charcoal (1in pieces)
    • 7 charges (150g mild steel + 400g charcoal). 1 charge every 4 minutes.
    • One additional charge of 400g charcoal.
  • Output: ~950g of high carbon stuff

Here are some pictures of the setup:

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7 Firebricks standing up; 1in tyuere at roughly 3/4 the height of a firebrick angled slightly downward.

In action video

 

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Extracting the puck.

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After quick consolidation on the power hammer.

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Spark test. Looking good.

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Knife after heat treatment. Unfortunately, I made the tang transition below where I forge welded some mild steel. Oops.

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Damn that’s a nice one

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Well done Niels!

I have a burning need to try this......

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Very nice! I need to try this again. I never seem to add any carbon to the steel when I do a melt. The pattern looks pretty wild. How many folds? 

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WOW!!! The sparks are impressive. What a beautiful pattern!!!

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Well.....it took about 5 minutes thinking about this and its official. I HAVE to try this!!!!

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12 hours ago, Zeb Camper said:

Very nice! I need to try this again. I never seem to add any carbon to the steel when I do a melt. The pattern looks pretty wild. How many folds? 

Not a lot of folds. Maybe 7-8. Some were triples. I had some difficulties getting carbon in initially and it was due to excess oxygen. 

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Thanks! I need to try cutting my O2 back I suppose. Thanks for keeping good record of your process! 

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I like that hearth.  And the steel is quite pretty too!

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