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Recent content by MURZ

  1. MURZ

    Weld Cost Estimating Spreadsheet

    This web site http://www.mruczekweldingengineering.citymax.com/products.html has a spreadsheet that is designed to estimate welding cost. The spreadsheet has 10 different joint configurations to choose from. There is a sheet to help you calculate wire feed speed and deposition rates based on...
  2. MURZ

    MathCADÆs solve for variable in the symbolic menu

    Let's try this. Looks like when I did a cut and past something went wrong. I have a mathcad sheet if it will help. I am currently working on a project where I am using MathCAD’s solve for variable in the symbolic menu. I have the following First equation is Em := 1/n3 where n3 is 11.408...
  3. MURZ

    MathCADÆs solve for variable in the symbolic menu

    I am currently working on a project where I am using MathCAD’s solve for variable in the symbolic menu. I have the following First equation is ?m := 1/n3 where n3 is 11.408 this implies that ?m = 0.0877 I then try to solve for ? in the following equation using the solve for variable in the...
  4. MURZ

    Bent plate after welding. How to prevent?

    You can also look at your welding procedure. Can you decrease the weld size any? This will help with the shrinkage. (e.g., smaller weld smaller shrinkage, smaller distortion). Angular distortion in fillet welds is affected by over-welding. Look at reducing the total heat input into the part...
  5. MURZ

    Combo Box Value

    I have several combo boxes I am using. The data for all boxes is supplied from a table using the “ListFillRange” on the Properties section. The table contains values that range from 10% to 100%. When I click on the combo box, the values are displayed as percentages. However, when I choose the...
  6. MURZ

    CO2 MIG WELDING

    You have received some good advice. I am confused about your economic reason for not using SAW. If you look at this from a cost standpoint, in welding cost means deposition rates. The higher the deposition rate the low your cost. SAW will give you the best deposition rates and therefore it is...
  7. MURZ

    Calculating Deposition Rates

    Thanks Goahead, I checked our Tech Library but we only have the 9th edition (Red Book) and the Green Handbooks. If you have access to the 8th edition, would you fax me a copy of the pages or post the calculation here? It would be greatly appreciated. Mark
  8. MURZ

    Journal Article on Weld Cooling Rates

    Does anyone have a copy of an article that was published in the Scandinavian Journal of Metallurgy 15, (1986), pp 97-103. The authors are L.-E. Svensson, B. Gretoft and H.K.D.H. Bhadeshia and the subject is weld cooling rates? I am searching for a copy of this. If you are in possession I would...
  9. MURZ

    Calculating Deposition Rates

    I am looking for a calculation to determine deposition rates for SAW. Preferable for twin-arc welding. (i.e two wires, one power source.) Any help would be appreciated.
  10. MURZ

    Calculation for Cooling Time

    Sorry, the last Ms temperature should read 690 K not 790 K
  11. MURZ

    Calculation for Cooling Time

    Metalguy, No offense taken. However, I believe you read my question wrong. I was asking if the Martensite Transition Temperature you use in your sheet was the martensite start temperature or the nose of the TTT diagram. I realize that the Ms is not the nose of the TTT diagram. Can I assume the...
  12. MURZ

    Calculation for Cooling Time

    Rich, Thanks for the calculation. I’m curious though, the cooling rate calculation that I typically use are the ones derived by CF Adams which are based on Rosenthal’s work. There are two equations, 2D and 3D heat flow. Could you tell me where the calculation you use is derived from? Also, is...
  13. MURZ

    Calculation for Cooling Time

    Does anyone have, or know of where I might find a Calculation for determining the cooling time between 800 - 500 degrees C for C-Mn-Si alloys?
  14. MURZ

    Welding SMAW without interrun cleaning

    Sayee: I am the author of the spreadsheet that you downloaded from Gerald’s web site. Since you seem to like the sheet and use it extensively, I would like to give you the full version. This full version is quite a bit more extensive than the one you have and is about 4 MB long. Let me know...
  15. MURZ

    Welding P91 chrome pipe

    Composition is going to depend on process used and manufacture of the wire or rod. In general, if you are going to use the SMAW process a rod with the AWS designation of E90xx-B9 is used. Typical chemical analysis is C=0.09 Cr=9 Mo=1.1 Ni=0.8 V=0.2 Nb=0.05 N=0.05 Mn=0.5 AWS SFA Number A5.5...
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