Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. FiatfLux

    Name that corrosion!

    Feel free, Brimstormer. I don't believe the assembly was coated in anyway. One person familiar with the equipment's history did mention a slimy film had been discovered on the interior, so, yea, it figures. If any clear resolution comes of this, I'll update the thread. Have a fine weekend...
  2. FiatfLux

    Name that corrosion!

    Thanks as well, TomDOT.
  3. FiatfLux

    Name that corrosion!

    Thanks true blood. I could suggest trying to confirm as much, since the new assembly is on order, we can trash the screws/washers and run som icp on them. I would hope that replacing these every 6 months was in the preventative maintenance schedule, will check. Thanks again.
  4. FiatfLux

    Name that corrosion!

    A few other observations I'd have made were it not for my passing infatuatuion with linking images... I am not sure of the composition of the screws, or the washers [possibly of the locking variety] used. All of them look pretty cruddy. The rod shown in the first image, which I thought was...
  5. FiatfLux

    Name that corrosion!

    Pertinent images attached here. Thanks all! https://drive.google.com/file/d/0BzLMywwDDRPLTVJDbFo4RzU1WDg/edit?usp=sharing https://drive.google.com/file/d/0BzLMywwDDRPLTHROVHZfRE1aUzQ/edit?usp=sharing https://drive.google.com/file/d/0BzLMywwDDRPLdmpSU2loMzlUeGM/edit?usp=sharing
  6. FiatfLux

    Name that corrosion!

    [apologies up front, it appears the photo link coding is not cooperating. For those bold enough to try the links, please repost them if both time and interest allow.] This happens to be 4140 low alloy steel. The part imaged serves as the plug at the base of an isostatic press. The sealing...
  7. FiatfLux

    How to calculate the thickness of lead used for shielding of gamma rays

    Trueblood, thanks for that document, very interesting. In the magnetics business, the condition of thin walls, such as pipelines, are measured by flux leakage. I wonder how/whether the methods overlap.
  8. FiatfLux

    How to calculate the thickness of lead used for shielding of gamma rays

    Is this based in the United States? If so, how is the NRC not all over your project? We used a beta source to track glass level/flow, and the spare was kept in a safe that would trigger an alarm at an NRC office. That's beta, electron radiation, no big deal. The hoops to jump through to use...
  9. FiatfLux

    MnCu Manganese Copper Ferrite?

    It turns out we can't do a thing with regard to MnCu. You might reach out to Ilpea and Hoosier, both ferrite manufacturers. As for fitting a magnet into your system, could a small electromagnet work into the design? Also, to clarify, I presume you realize that hitting the curie temp is a...
  10. FiatfLux

    MnCu Manganese Copper Ferrite?

    yes, they are pushed higher for motor applications. You want something to become demagnetized at 50°C[~122°F], to achieve...? What are you hoping to study? I should hear back whether the aforementioned branch has ever dealt in mncu ferrites. Failing that, I know of two alternatives that...
  11. FiatfLux

    MnCu Manganese Copper Ferrite?

    A branch of the company I work for does manufacture ferrites, and they may be able to batch a small amount of the composition you're interested in. That said, any magnetics you could get out of what you've determined to be obsolete magnets can be provided, and with better uniformity, by newer...
  12. FiatfLux

    MnCu Manganese Copper Ferrite?

    "Why?" seems to be a very reasonable question. are you hoping to exploit the curie temp, specifically? I'm certain they can still be produced, and may still be produced, I can find out more in a day or so. What are you trying to accomplish with these magnets? I ask because other magnets...
  13. FiatfLux

    What type of magnetic metal to use?

    uh, good luck!
  14. FiatfLux

    What type of magnetic metal to use?

    Vermonster, would it help if you provided us with the first patent? I mean, it's already protected by patent, and the details therein may help us help you. Re: time; believe it or not, we all are saying the same thing, but focus specifically on the last sentence in paragraph two of Magben's...
  15. FiatfLux

    What type of magnetic metal to use?

    [ol 1] Any metal that would become magnetized would not become more so over time once it is saturated. This is part of the reason there are permanent magnets. Metals that can maintain some magnetism, such as steel, slowly "bleed off" that magnetism. Critical: the metal you select must either...
  16. FiatfLux

    Magnet for experiment

    Red Glyptal is commonly used for windings, but you may be able to use any clear, high temperature two part epoxy, such as colorless or amber. Opaque epoxies can contain iron or aluminum.
  17. FiatfLux

    Quiz - can mag force cause N side of one PM stick to N side of another (without any help)?

    Ah,flux has its shortest path [so, higher density] at the edge, perhaps more likely a distribution of force requirement, as in, easier to symmetrically distribute from the middle, than off center. Not entirely sure though.
  18. FiatfLux

    Quiz - can mag force cause N side of one PM stick to N side of another (without any help)?

    MagBen, If the polarity were to flip local to n1 surface as it contacts n2? I would expect it to be less than Hci, leading to no permanent change in sign, but their may be permanent reduction in net mag moment. Again, assuming magnet 1 and magnet 2 are identical in material properties. That...
  19. FiatfLux

    Quiz - can mag force cause N side of one PM stick to N side of another (without any help)?

    ElectricPete, We're assuming equal magnetic properties, correct? Are you answering your pop quiz due to directly observed phenomenon? Just curious. I think you were close to the mark with the flux line of thought, and registered today to add a little more. Assuming equal mag properties, the...

Part and Inventory Search

Back
Top