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Daniel Cauble

My initial journey into crucible steels.

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13 hours ago, Daniel Cauble said:

Seems people missed my orishigane thread too.

Don't take it personally. There's too much good stuff here and only a limited amount of time.......poor excuse, I know, but it's the only one I can come up with at the moment. Now I'm off to find that Orishigane thread.

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My most recent work. ~1.7% C

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I've been following your work on instagram. This is really cool! How are you able to control the heat so you don't accidentally burn the billet?

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4 hours ago, Alan Longmire said:

Nice!  Made any blades from it yet?

Not yet. A medical procedure this weekend stopped me from working further.

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On 11/3/2018 at 7:33 PM, Wesley Alberson said:

I've been following your work on instagram. This is really cool! How are you able to control the heat so you don't accidentally burn the billet?

I use a thermocouple an keep everything exact.

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Ive made 2 blades. One broke while straightening.

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Different viewing angles...

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And the broken one...

 

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On 11/4/2018 at 7:29 AM, Alan Longmire said:

Nice!  Made any blades from it yet?

Not too bad, are they Alan? Ive got one more Gyuto to forge from this steel to go.

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That pattern is nice what rotten luck one broke.

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DAYYUM that's some nice watering!  Too bad about the break. :(

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Niiiiice Daniel!  beautiful watering.  Is there enough blade left on that broken one to make a small herb chopper?

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Oh yea. Plenty for that. Planned on it actually.

It was a happy accident. Shortly after these were made, i was approached by a student at a lab in Canada who wanted to write up a report on the strength of interdendritic regions to the overall blade. I and 2 other people from different areas of the world sent samples of material to be looked at through an SEM (Scanning Electron Microscope), regular metallurgical optical scopes, and a mass spectrometer. I typically cut windows from each crucible puck, which was another happy coincidence because i was able to send one set pf samples that contained a chunk from the puck, a piece of the bar after spheroidizing, and a piece of a blade from that bar.

Another bag contained a previous run where from my understanding of what was going on, crossed the 2% C threshold. I sent a sample of the puck and thr bar i forged following. 

I even sent folded samples of my orishigane. I felt it was relavent since that is what i use as feed material for my.crucibles to begin with. The really cool thing there will be finding out carbom content in a 4 fold and 9 fold sample. It will give me a good idea on how well i retain carbon on my process. It will also show me if my findings all this time are true or not in relation to removing Mn from steel in the hearth process. I suspect it does. All of my hearth steel and even this crucible steel reveal to me that despite the original steel to be melted at the very beginning (the hearth) having .8% Mn, that the hearth seperates it in the slag/silica. I have never made a deep hardening sample of orishigane to date.

 

A full report will be written and submitted to me in January.

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Holy Smokes that is some interesting stuff. Thank you for sharing

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Epic thread, even my wife likes your crucible steel! Your results are impressive.

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Wow. I hope you can share the report findings when you get it. 

I love the whole iron smelting, bloomery  and crucible steel making going on in the blade-smithing arena.  Thanks for sharing.

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Thanks guys, np. This year my focus is going back to my orishigane and making japanese swords, so after the last chef knife with this puck I will put crucible steels on hold.

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Experimenting with crucible steel is very time consuming and expensive...progress tends to be slow...I totally understand your thinking.

Jan

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