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  1. mod231

    Groove weld backed up with a fillet weld

    Unfortunately I can't without doing a ton of work to blot out proprietary notes, which wouldn't leave much left to look at in this case... The weld I had pointed out happened to be on a main plate loaded primarily in shear. In any case, I feel like I have gotten the info I was looking for...
  2. mod231

    Groove weld backed up with a fillet weld

    I think I see it. If I consider the throat to be from the root of the original groove weld to the face of the reinforcing fillet weld, that would certainly be larger than just the groove depth. Is that what you are saying?
  3. mod231

    Groove weld backed up with a fillet weld

    Dhengr, Can you elaborate on this? I had originally thought that the smallest throat dimension of the combined welds would be equal to the groove weld depth, and that the fillet weld wouldn't really increase this. Regards.
  4. mod231

    Groove weld backed up with a fillet weld

    I see, that does make sense. Thank you.
  5. mod231

    Groove weld backed up with a fillet weld

    Attached is a sample.http://files.engineering.com/getfile.aspx?folder=37f31122-6654-47cf-9247-ff6e6f504e8c&file=groove_backed_with_a_fillet.png
  6. mod231

    Groove weld backed up with a fillet weld

    Two member joined at 90 degrees
  7. mod231

    Groove weld backed up with a fillet weld

    Hello, Just a general question here: On many occasions now I have worked with 1970's vintage prints for large industrial machines (mostly presses). These presses are often heavy plate weldments in the 2-6" thickness range. I have noticed on a lot of these prints that it is common for a large...
  8. mod231

    band brake steel material suggestions

    Thanks for the information and material ideas. I did end up contacting a band brake manufacturer just to get additional info, and of course they agreed it is a difficult application. They indicated that stopping the friction material from shearing off would be a challenge given the relatively...
  9. mod231

    band brake steel material suggestions

    Thank you both for the input. Regards
  10. mod231

    band brake steel material suggestions

    Tbuelna, The conceptual device is going to be an external style brake unscrewing two components, the bottom component has a keyway to prevent rotation, while the top component is machined smooth and the customer is unwilling to machine any mechanical interlock features into it. The smooth...
  11. mod231

    band brake steel material suggestions

    General question- what classes / alloys would be good candidates for a band brake application-(the band itself)? This is a very preliminary concept for a design at this point, application would be static and room temperature. Anectdotal applications or experience are welcomed, also feel free...
  12. mod231

    Is more hardness necessary in this application?

    Brimstoner - this is the parallel conclusion I arrived at today. I'm likely going to use drill bushings. EdStainless - Great idea. I think I can achieve this partly with the drill bushing idea, and I may be able to upsize the base of the pins. Thanks to all.
  13. mod231

    Is more hardness necessary in this application?

    I took the tolerance issue into account by factor of safety. I should clarify: I don't necessarily need a definitive answer, I would just like to hear people's opinions/experiences- like you shared. I like the idea of localized hardening, thank you for the information. Regards.
  14. mod231

    Is more hardness necessary in this application?

    Hello, I am designing a rotary yoke device that is used as a spanner wrench to unthread 2 components. Actuation will be steady hydraulic, impact will not be used. I would like to make the yoke out of 3" plate. I am considering using 4140 moderately hardened, or possibly A514 as-is. It...
  15. mod231

    General question about HSS vs. structurals in transverse compression

    Thank you, will read this.
  16. mod231

    General question about HSS vs. structurals in transverse compression

    Hello, I was wondering if it is generally bad practice to intentionally put HSS (square) into transverse compression, and by this I mean laying the tube on its side and putting a "crush" load on it. Just for a little background, I need to create a base for a large metal tub to sit on that has a...
  17. mod231

    natural gas compressibility factor question

    Wow, this turned into a really informative thread, great stuff! Thanks very much everyone.
  18. mod231

    natural gas compressibility factor question

    Thanks to all. Regards.
  19. mod231

    natural gas compressibility factor question

    Hello all, I am sizing a small natural gas line with a starting pressure of 40psi for an industrial application. It will need to flow 8300cfh, the pipe run is 3500'. I was going to use the Renouard equation, then I read in a piping design handbook that the compressibility factor "Z" doesn't...
  20. mod231

    Line of action question for a mechanism

    thanks everyone for the insight

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