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Recent content by kingnero

  1. kingnero

    Overtightening a bolt beyond its recommended bolt load.

    Additionally, at 150°C you're not going to have the mechanical properties at the same level as room temp.
  2. kingnero

    Weld Size Calculation for Plate Welded Perpendicularly to RHS Beam

    I did forget to factor in the sqrt(3) as the weld's in shear, not tensile. SolidWorks probably will assume the entire perimeter to be resisting the applied force (which is not completely untrue). I can't explain the times 3 diff.
  3. kingnero

    Weld Size Calculation for Plate Welded Perpendicularly to RHS Beam

    Force / (2 x throat x effective weld length of one vertical weld) <= allowable yield. Give or take some of the national parameters like allowances on material values, weldments, safety factors. Don't count on the horizontal welds.
  4. kingnero

    Welding of S355JR

    EN ISO 15614-1 does not allow this.
  5. kingnero

    stud welding manufacture process

    You'll probably find more info in ISO 14555, however it's not clear to me what exactly you need. Also, are you sure that the picture and what you describe, are the same? Doesn't look like it. This is what carbon steel studs in small diameters usually look like: and the larger studs indeed...
  6. kingnero

    AISC Table J2.5 - Tens/Comp Parallel to Weld Axis

    Loads parallel to weld axis are mainly borne by the constituent parts themselves. The weld itself doesn't really do much to resist sigma_parallel (see below picture).
  7. kingnero

    Multiple welds between i beam and circular steel column

    Column won't be significantly weakened by the welds. You'll have to deal with distortion though.
  8. kingnero

    Dissimilar Metal Weld Qualification

    This. I've seen some PQR's where the hardness doesn't match the mentioned base material. Makes me question the entire PQR. This is how I organize them: If clients requires grain size / FN / hardness and yield strength for aluminium / corrosion testing / ... I include the reports in the PQR...
  9. kingnero

    Difference Between Cladding & Overlay

    Attached the definitions under ISO.
  10. kingnero

    Heating duplex weld joint by TIG arc welding

    IR guns are notoriously unreliable, especially on the higher temperatures and on reflective surfaces like stainless steels. Here, I'd suggest contact probes. Great idea, use a real life case like this instead of some generic tool box meeting template for training.
  11. kingnero

    How to joining CRA pipe to CRA pipe? ( Claded incoloy 825, thick 5mm and base material thick 12.7mm)

    I don't see any advice above leading you to use E(R) NiCrMo-3 for the entire weld. I also wouldn't be in favor of this, as I mentioned above. And, again, you don't need a qualified welder to advise you how to proceed, but rather someone with a metallurgical background. Someone that might ask...
  12. kingnero

    How to joining CRA pipe to CRA pipe? ( Claded incoloy 825, thick 5mm and base material thick 12.7mm)

    Will the welding be performed under your supervision/responsibility, or will a contractor be doing it, and you just want to verify his procedure? Is that for the Ni, the 309 or the carbon steel? You have three distinct phases in the welding. It's important to be specific in all three, and if...
  13. kingnero

    How to joining CRA pipe to CRA pipe? ( Claded incoloy 825, thick 5mm and base material thick 12.7mm)

    Regarding the Ni-based filler, check the website of the Nickel Design Institute. Lots of very informative, and practical useful info there. All fillers will have low carbon. The problem is the carbon (and other alloying elements) in the base metal, that might cause problems. The alternatives...
  14. kingnero

    How to joining CRA pipe to CRA pipe? ( Claded incoloy 825, thick 5mm and base material thick 12.7mm)

    Not too sure about the filler metal. A PQR only says so much. Nothing about the fitness for purpose (corrosion resistance, working temperature and creep resistance, ...). Other than that, no remarks about the working procedure. No problem transitioning to 309 and CS, as Ed says. Be careful about...
  15. kingnero

    CJP Weld sloped beam junction

    Why cut & weld if you can simply bend the beam? And a CJP weld (if done correctly) is always as strong as the profile itself.
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