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I Forge Iron

Chris Williams

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About Chris Williams

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    Central Florida

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  1. It's good to hear that they fixed the issue. I saw several design features that had been incrementally worked on (with improvements and otherwise) for years or even decades without adequate resolution. I was typically working with stuff that was one or more generation old, and the rotating compressor parts were typically titanium alloys. I don't know what is in the current generation engines. I haven't worked with aircraft in years now. I guess that keeping expensive parts might make sense if you have a cost+ contract or you make a percentage on the parts. I was always on the using
  2. Most engine bearings that I encountered were 52100. There were some other alloys used, but nothing particularly exotic. It doesn't have to be a big piece of shrapnel to ruin your day, either. I've seen crashes from smaller shrapnel (such as a single thrown turbine blade) cutting fuel lines as well as from shrapnel hitting a remaining good engine. Bigger chunks from a fragmenting disk have tremendous energy, and are even more destructive. Even though I know the odds of an event are miniscule, I don't like sitting in the plane of rotation of the turbines or compressors.
  3. Sloss furnace is in Birmingham, and Tannehill Ironworks is nearby.
  4. That makes more sense. I was thinking that one would have to know the guessing "rules" of the others to guess correctly, but I hadn't considered guessing into the aether "fishing" for one random person accepting of the "guess" out of many hearers.
  5. I saw a bald eagle steal a fish from an osprey this afternoon. It seems that I see this behavior occur at least every couple of months or so. In fact, I don't know that I have personally witnessed a bald eagle obtain food in any other way. If I didn't have other sources, I would say that our national bird is exclusively a fish thief! How much of this type of comparison is based on the biases of the observer? I was unfamiliar with this sort of framing, but I suppose that I could talk myself into seeing "guess culture" in some people I know. It seems to me that anyone working purely in tha
  6. Some of them were repairs of broken ships. On the ship my step-granddad crossed the Atlantic in, one of the other soldiers on the ship started looking closely at the hull. The guy went to examine a few places, and then realized that HE had welded it back together after it broke in half in the Great Lakes (I don't remember which one). The welder spent the rest of the trip telling others, or just saying to himself, "my welds will hold... my welds will hold!"
  7. "You load sixteen tons, what do you get? Another day older and deeper in debt Saint Peter don't you call me 'cause I can't go I owe my soul to the company store" In the US, it is the employer's responsibility to provide PPE when it is required for the job. Any business that handles it differently is treating YOU as the consumable, and likely breaking the law! OSHA FACTSHEET PPE https://www.osha.gov/OshDoc/data_General_Facts/ppe-factsheet.pdf
  8. I hope you are not proposing that HR departments are qualified to establish skills tests that accurately determine worker capabilities. I don't know how many times I've heard "an engineer is an engineer" with respect to highly specialized positions.
  9. "One good test is worth a thousand expert opinions." -- Werner von Braun You want an expert that recognizes the (limited) value of their opinion, and that can and will recommend the right test for a given problem.
  10. You'll want to remove any forging scale and then passivate.
  11. A sheet or two of hardiboard or equivalent cement board wouldn't cost that much (~$35 for a 4'x8' sheet). You can replace just where you want the chimney to be, or a full wall. Make sure to use a wet process to cut it, as the dust is a real hazard. I haven't bought them before, but I just priced steel studs, and they aren't much more than wood. Check out the hardiboard installation guides before committing to this combo though.
  12. https://www.sciencedirect.com/science/article/abs/pii/S2352409X20303692 Found it. "Firing up the furnace: New insights on metallurgical practices in the Chalcolithic Southern Levant from a recently discovered copper-smelting workshop at Horvat Beter (Israel)." Unfortunately, this article is not open access.
  13. Thomas, I am not. How would I go about having placement on the list?
  14. Thomas, The only copper oxide reduction I've performed personally was with hydrogen gas in a TGA. I didn't smell a thing, honest! (Even had there not been an exhaust connected to the fume hood exhaust, I would not have noticed a few grams of H2O vapor in the lab.) SLAG, I am glad that you find the information to be of value. I must admit that "open access" was not particularly common during my academic years, and I hadn't thought to look for such a resource before. Stash and Frosty, You're welcome for the links. I remember while growing up that although I could find
  15. "Play sand" is crushed, at least whenever I buy it. In fact, I don't know of any local place where I could get bagged riverine sand readily. Your sources may vary. Find a bag with a tear and inspect a little bit of it. You'll be able to feel if it is sharp or not.
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