Does anyone know, what is the material to make turbines, at electric power stations. Is that stainless? What about the rotor (not blades)?
Thanks
Does anyone know, what is the material to make turbines, at electric power stations. Is that stainless? What about the rotor (not blades)?
Thanks
looks like this
Steam or gas turbines?
The parts of medium sized steam turbines that I have direct experience with (buckets, blades, diaphragms) are usually martensitic stainless steel.
Steam
tungsten, Molybdenum, etc - stuff with names like Nimonic 105, Udimet
720, Haynes 282, etc. Pretty esoteric stuff. Lesser stuff like Hastelloy and Iconel are also used, depending on how hot and high pressure the steam is.
Heh. Growing up less than 75 miles from the Bonneville Dam, and a day's drive from most of the big dam's on the Columbia River, I saw "turbine" and I was thinking "water".
The worst assumptions are the ones you don't realize you're making...
Thanks,. Color wise, this turbine looks like Inconel MIG wire that I sold recently.
i
I doubt you'll find much, if any, of the more exotic materials in a normal steam turbine. Maybe limited use of some Inconel (nickel) alloys.
But what would you find?
Like I said in my first post, martensitic stainless steels: 410 and related alloys.
This doesn't answer Iggy's question, but Tim, did you ever visit the coal generator plant in Centralia, WA. It was taken out of service quite a few years ago.
The Portland Amateur Radio Club went there on a tour in the 1970's and part of the tour was the actual power generation building. The guide said they used heated hydrogen gas to power the turbines in a closed system. I should have ask more questions about it, but I am sure that was the story.
Paul, KD7HB
On 1/17/2012 12:52 PM, Ignoramus23559 wrote: ...
Depends markedly on what were the operating conditions of the particular turbine and the age (and the two are correlated to some extent; there weren't any supercritical units before the late 50s or so to speak of). The higher pressure/temperature, the more demanding the conditions and the more "exotic" the materials. I'd guess that's from the low-pressure section in the picture, but "low" is still relative depending on the plant design.
You're best source for the turbine in question if you're serious will be to ask the folks holding the auction (assuming that's what's going on here).
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On 1/17/2012 1:10 PM, Paul Drahn wrote: ...
...
They use H for cooling in the generator section, not power in the turbines.
Iggy, what is it you're looking at there? Siemens? Westinghouse? GE? Doosan? What?
You've gotten good information in this thread but you can save a lot of speculation by inquiring with the manufacturer. I assume you're asking for the scrap value?
In general, steam turbines use more stainless. But they can be designed for operating temperatures ranging from around 300 C to 1,400 C. At the high end, the rotors are solid Inconel.
If you're trying to figure out the rotor's value, you'll really need to know who made it and what they made it from. The range is quite large, from custom 1% chromium alloys to superalloys.
"Ned Simmons" wrote
FWIW, I saw some turbines from a nuclear power plant (Pilgrim?) in a scrapyard once. All the blades had been broken off. The owner didn't know which valuable alloy they were, but it wasn't the same as the rotors.
jsw
Ah, so! thanks for clearing that up.
Paul, KD7HB
a small caliper and a small micrometer?
Paul
And I saw four or five 737 engines in a scrapyard.
My first thought was "Is there enough parts to make one good one". Luckily I put that out of my mind quickly...
On 1/17/2012 2:17 PM, Jim Wilkins wrote: ...
Indeed, virtually any modern turbine will be a mix.
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In the powdered coal stations running hyper-steam nothing less will stand up.
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