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Recent content by DVWE

  1. DVWE

    WELDING SYMBOL - AWS

    Yes, that is incorrectly drawn as a double sided fillet weld. It should be a butt joint as you have indicated. The “1” refers to the size or height of the fillet weld leg. AWS A2.4 Weld Symbols is the best reference in the industry for definitions of welding symbols. I recommend anyone who...
  2. DVWE

    Reducing the thickness by machining to qualify for low thickness pipe WPS

    Agree with kingnero. However, if you’re looking for a clause in the code that allows this, there isn’t one. Just machine down your pipe to the desired thickness and record it on the PQR. The devil is in the details; she also wears prada.
  3. DVWE

    N95 masks for welding ?

    Agree with Ed. The concern when welding chromium alloyed materials is hexavalent chromium exposure, but this is typically only a problem present with welding processes that use a flux (i.e. FCAW and SMAW). Generally not a problem with GTAW, and certainly not anything an N95 mask will help to...
  4. DVWE

    Mistakes on this weld work

    First mistake I see is bad photography skills. The devil is in the details; she also wears prada.
  5. DVWE

    Quality of Welded fabrication from Transylvania - Can you help me ?

    Brilliant. Good one!! [lol] The devil is in the details; she also wears prada.
  6. DVWE

    Quality of Welded fabrication from Transylvania - Can you help me ?

    I think you should give them lots more work [smile] The devil is in the details; she also wears prada.
  7. DVWE

    Finishing a 304 SS welded assembly

    If you just pay a welder’s helper to wire wheel the welds, I think you will be pleasantly surprised with the results, as well as the scale of economy to do so. The devil is in the details; she also wears prada.
  8. DVWE

    Finishing a 304 SS welded assembly

    Perhaps you should ask them for a picture of what it is that “prettier” means or looks like to them. As professionals, we ensure the welds meet the code of construction. The devil is in the details; she also wears prada.
  9. DVWE

    Spot Weld Testing

    You know what they say about assuming…but…… A part ordered from McMaster Carr is probably not going to be used for a critical application, but I digress. It definitely wouldn’t hurt to try. For what it’s worth, my facility does about 1,000 spots welds a day on 4 machines and all different...
  10. DVWE

    Spot Weld Testing

    I agree on critical applications, but in those cases you will want to remove the oxide layer with a flapper disc or wheel. Scotch brite by hand after a few second scrub will only break down the oxide layer slightly. Spot welding is such a quick, intense heat from resistance that the oxide layer...
  11. DVWE

    Spot Weld Testing

    It is not. Settings may vary slightly between different work hardened levels, but not greatly. Not by much. Because of its austenitic structure, it is not hardenable by heat. Really more of a question for your customer. It will depend on its end usage. Perhaps they will need similar hardness...
  12. DVWE

    stud weld - continuous breakage

    I don’t know that I would say deadly poisonous, but it certainly isn’t good to breath. Most people who experience excessive zinc inhalation from welding describe it as a flu-like symptom, which is usually abated by a glass of milk or two. It may become deadly after long term, high exposure...
  13. DVWE

    Joint efficiency where 3 welded joints join in

    When the header is the same diameter as a nozzle, the best solution is a Tee. Is this route a possibility? The devil is in the details; she also wears prada.
  14. DVWE

    Query on ASME IX SMYS

    Yes, it would. Typically, there are three required tests to qualify a CRO WPS. Chemistry, liquid penetrant, and bend tests. Customers may require hardness testing or others. Tensile testing, including yield strength, is not required. No, it will not. See QW-250 for the specific welding process...
  15. DVWE

    16Cr-11Ni-2.5MoCb Furnace Tubes

    You’ll have to look in ASME section II, part A for that specific material and see if there is an associated P-number with it. Cb is the old designation for Columbium, now known as Niobium (Nb). The devil is in the details; she also wears prada.
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