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Wendelspanswick
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Metal:How it works
Wendelspanswick
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Really interesting program, worth watching on Iplayer if you missed it. Filled in lots of gaps in my knowledge, especially how Bessemers process was a failure until the chemist (missed his name) stepped in to suggest adding the 1% carbon back in after removing all the carbon with the air process.
That single crystal turbine blade at the end was amazing.
That single crystal turbine blade at the end was amazing.
Thats similar to self shielded welding wires. Blowing air through (or melting in air) allows loads of Nitrogen to enter the metal. Nitrogen embrittles it so you need to add something to combat the embrittlement. Carbon and Aluminium help with that.
Welding is steelmaking in miniature so when youre using gasless (self shielded) you are using a little bessemer converter.
The facetious answer is IRON..........sorry
I think what you mean is "most of the carbon removed" and that is STEEL and dependednt on how much is removed MILD STEEL
ronan
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The facetious answer is IRON..........sorry
I think what you mean is "most of the carbon removed" and that is STEEL and dependednt on how much is removed MILD STEEL
yes but the bessimer process removes all, or nearly all the carbon and then some 1% is returned , so the metal is basically mild or dead mild steel ?
MattF
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What content is wrought?
If it was pure, it's iron.
The Bessemer thing was a perfect example of engineers occasionally over thinking things. Such a blindingly obvious and effective answer yet so simple.
If it was pure, it's iron.
The Bessemer thing was a perfect example of engineers occasionally over thinking things. Such a blindingly obvious and effective answer yet so simple.
chunkolini
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A mixture, which is why it is rust resistant and cant be welded.
Also very expensive to buy as scrap as almost nobody is making it these days,
Also very expensive to buy as scrap as almost nobody is making it these days,
KemppiFrog
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I have been working with it recently, odd stuff, it corrodes in very local patches and can be cleaned back to the good base by chipping. Flakes off to leave a clean, slightly granular surface. It does weld, with MMA, but I would worry if it was safety critical. The gates I have been restoring are all riveted or screwed together. The last pair were 160yrs old. A sharp learning curve, to say the least...
KF
But you meet some interesting people who own them.
chunkolini
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I remember from out of date book that I can be MMA welded by if I remember 'well trained' people, is it because the coating on the rods is effectively a mix of slag etc? Big Al your call???
Just watched the programme.
Brilliant TV, Mrs C watched it with me and was fascinated.
How odd to have a documentary presented by somebody who knows what they are talking about. It was also able to interest an enthusiast and his wifey.
Is it going to be a series?
Just watched the programme.
Brilliant TV, Mrs C watched it with me and was fascinated.
How odd to have a documentary presented by somebody who knows what they are talking about. It was also able to interest an enthusiast and his wifey.
Is it going to be a series?
chunkolini
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I was offered a while heap of proper Wrought iron cheap recently.
Of no relevance to me, I tried a load of blacksmiths I know and nobody was interested.
It got weighed in as scrap.
Seemed sad to me.
Of no relevance to me, I tried a load of blacksmiths I know and nobody was interested.
It got weighed in as scrap.
Seemed sad to me.
BeeJay99
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Ain't that the truth?
puffernutter
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Coming to this late (and I can't see the programme because I'm in Pittsburgh) but when they were looking to build the frames of the next steam engine "Tornado" the only information on the drawings about the material was use "Best Yorkshire Steel". I used to work with the Project Manager of Tornado and he explained how they found an equivalent. Apparently, if you take the red hot steel and put it through a set of rollers you get "Yorkshire Steel". If you then fold it over and pass it back though the rollers (orientate the crystals slightly better) you get "Best Yorkshire Steel". if you then fold it over and pass it back through again, you get "Best best Yorkshire Steel" and one more time is the most to get "Best best best Yorkshire Steel".
Fascinating eh!
Cheers
Peter
Fascinating eh!
Cheers
Peter
Theres a company in Thirsk who would probably have bought it
http://www.realwroughtiron.com/we_buy_iron-204.html
Welding it is possible......if you weld on the surface youre onto pure iron and thats good unless it delaminates underneath.
Across the grain is more difficult but you stand a chance using a 7016 or 7018 and you can put up with some porosity, otherwise keep grimnding it back until youre welding onto weld metal....if you follow
Ive never heard of yorkshire steel but if its the best it must come from Yorkshire........
Sounds like wrought iron to me
Wrought Iron is more bendable than mild steel and doesnt "neck" down on sharp corners as much
