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 TugboatEng 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: *

  • Users: W1987
  • Order by date
  1. W1987

    GMAW shotcircuit - Lack of fusion

    The type of joint is double bevel side with back gouging (arc air + grinding), the angle of bevel varies from 50 to 60 degrees and the root opening varies from 3 to 4 mm. The materiales thickness is 20 mm, it is a low alloy steel welding with ER110S-G, preheat is 120°C, welding positions are 2G...
  2. W1987

    GMAW shotcircuit - Lack of fusion

    Hello everyone, I have a question about GMAW short-circuit. This process was selected for some out-of-position joints, and it is not possible to use another process or change the transfer mode. We have encountered lack of fusion in these field welds. I believe that increasing the joint angle...
  3. W1987

    Question about weld fillet reinforcement in PJP or CJP joints

    Hi, Could someone please call me and explain the objective of using fillet welds to reinforce PJP or CJP welds? I read that they help prevent stress concentration and increase fatigue strength, but why? I think that this is because stress is better distributed. Also, could you recommend a...
  4. W1987

    Undermatching filler metal - AWS D1.1 and ASME IX

    Thank you all for your responses; now it is clear to me. Thanks, gtaw.
  5. W1987

    Undermatching filler metal - AWS D1.1 and ASME IX

    Ok, thank you for your time
  6. W1987

    Undermatching filler metal - AWS D1.1 and ASME IX

    Thanks, R6155, Yes, but Table 4.3 does not allow undermatched filler metal for complete joint penetration groove welds in tension applications. So, is it possible to use undermatched filler metal for these applications when your design allows design stresses below the minimum specified...
  7. W1987

    Undermatching filler metal - AWS D1.1 and ASME IX

    Thank you for your response. r6155, I undestand the stament i'm asme ix qw-153. But in AWS D1.1. for me it is no clear. But if you can use undermatching filler metal, what it is the acceptance criteria for tensile test? EdStainless, Im talking about specification minimum strength.
  8. W1987

    Undermatching filler metal - AWS D1.1 and ASME IX

    Hi Everybody, I have a question regarding the use of undermatching filler metal in the qualification of welding procedures under AWS D1.1. I understand that it is permissible to use undermatching filler metal if the engineer agrees to it or if it is acceptable for the application. However...
  9. W1987

    Heat affected zone removal by grinding

    Thank you for your anwers. I was thinking that one approach could be to perform non-destructive metallography to determine the approximate width of the HAZ.
  10. W1987

    Heat affected zone removal by grinding

    Hi everybody, I have a question. Thank you for your time. We need to remove a complete weld on a shell that belongs to a pressure vessel. The removal will be performed by grinding. We will remove both the weld metal and the heat-affected zone (HAZ). Here’s the question: the HAZ on austenitic...
  11. W1987

    Nitronic 50 (austenitic stainless steel) welding

    Hi Ed, thanks for your response once again. We will try to use a different gas mixture, either Ar or Ar-N2. We opted for a gas mixture that contained oxygen to achieve a GMAW spray transfer. The weld metal has a ferrite content ranging between 5-10%. The chemical composition of the weld...
  12. W1987

    Thickness in welding.

    Hi everybody, I would like to hear your opinion on the influence of thickness in welding and why it's so important. I know that it can affect the cooling rate, for example in carbon steels and low alloy steels. When the thickness is increased, it's more probable that welding generates harder...
  13. W1987

    Nitronic 50 (austenitic stainless steel) welding

    Hi Ed, Thank you for your response. Yes, this is annealed material with a thickness of 20 mm. The welds are clean with some minor discolorations. Could you please explain why discolorations are important? "Based on my experience, surface discolorations should not be a major issue and can be...
  14. W1987

    Nitronic 50 (austenitic stainless steel) welding

    Hello everybody, I have some questions regarding Nitronic 50 welding. I conducted some tests using the GMAW and SMAW process with ER209 as the recommended filler metal for welding Nitronic 50 to achieve similar mechanical properties. However, the impact properties of the weld metal are low...

Part and Inventory Search

Back
Top