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  • Users: CWIC
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  1. CWIC

    LA city certs

    jiw433: If it is the welder qualification testing you are inquiring about, the test is relatively easy. First get your hands on an application which can also be obtained online. 1.) Knowledge and use of the AWS code(s) are required for the test you may be taking. D1.1 for the structural D1.2...
  2. CWIC

    bolt & crown nut with cutter pin

    ddace: This method is probably the most common for securing motorcycle wheels to the forks and rear swingarm. The wheels obviously see substantial torque during braking or acceleration. The beating they get driving down a road or off-road (much more severe) is constant and substantial as well...
  3. CWIC

    About T,K or Y connection

    mirhosseini: 1.) Qualification of the test in figure 4.27 would qualify pipe diameters 4" and above per Table 4.2 @ 6" diameter (Standard Test Pipes). 2.) If you require a smaller diameter to qualify, then you have the option of the 2" sch. 80 or 3" sch. 40 which would qualify you from 3/4" to...
  4. CWIC

    ULTRASONIC TESTING IN AUSTENITIC STRUCTURE.

    Hi GR: This is an interesting article. What I find even more interesting is the varied opinions on this subject. I noted above I recently had a SS weld (316L) UT per my clients request. There was quite a debate about the validity and sensitivity of UT for this material. The NDT company I use...
  5. CWIC

    ULTRASONIC TESTING IN AUSTENITIC STRUCTURE.

    ibf: Austenitic SS's are commonly ultrasonically tested. I had an unusual SS joint configuration UT'd two weeks ago as the part geometry would not lend itself to RT which would have been much faster and cheaper. This application was in accordance with the AWS D1.6:1999 Structral Welding...
  6. CWIC

    Yield Strength and Wear Properties of Steel

    I put another star next to NickE for sticking to the topic. afarian is trying to solve an existing ptobelem using the same materials and is not seeking a replacement or redesign. Many of the parts used for this application are typically cast steel pieces. The topic of steel availabilty should...
  7. CWIC

    Does "Drawn-Over-Mandrel Tube" mean SEAMLESS TUBE?

    To my knowledge the material would be identified as: "cold drawn seamless mechanical tubing" to be defined as seamless. This material has a higher degree of finish and closer dimensional tolerances than that of other tubing-types.
  8. CWIC

    Yield Strength and Wear Properties of Steel

    afarian: Having being a heavy equipment welder/mechanic in my younger days, this is a problem as old as the industry itself. The entire 5th wheel (kingpin) assembly gets a lot of beating during service and coupling. This application is subject to abrasion, shear, fatigue, tensile and impact...
  9. CWIC

    Yield Strength and Wear Properties of Steel

    Abrasion resistance of steel typically requires one or two additional processes to achieve this property: 1.) Apply some type of interface between the concerned parts such a abrasion resistant material applied to the base metal by hardfacing (welding, thermal spraying or cladding). 2.) Heat...
  10. CWIC

    Preheat weld required for 1045?

    JLoxterkamp: Your application would require preheating to achieve a satisfactory weld. If you decide to step up to the 1045 material (an increase in C), then preheating would be required more so. As the carbon content increases, so does the preheat requirement. The change from 1018 (a low...
  11. CWIC

    Yield Strength and Wear Properties of Steel

    I don't the material properties you've mentioned ("wear" and "yield") are directly related. However, other properties can be correlated with each other such as tensile and yield or wear and abrasion.
  12. CWIC

    Field welded moment connections-IBC

    JTPE: With regards to the run-off tabs, please refer to FEMA 353, 4.2. The 5/16" fillet is the reinforcing fillet weld noted in D1.1, Figure 3.4 (TC-U4a-GF), note 7. I recommend getting your hands on copies of FEMA 350 - 353.
  13. CWIC

    Fillet Weld Break Test

    JimA: Good luck with your qualifications and please don't forget to let the forum know how the testing came out.
  14. CWIC

    Welds Cracking

    burns5702: I would request more than the filler metal. I would request to review the welding procedure (WPS) and PQR (test data) if it was qualfied in accordance with AWS D1.2.
  15. CWIC

    Fillet Weld Break Test

    JimA: If you are indeed removing a "...paper thin amount of metal...", make sure it is base metal and not mill scale which is a common failure mechanism for fillet welds. The depth of penetration is not an issue unles it is specified that your fillet weld's actual throat complies with the...
  16. CWIC

    Fillet Weld Break Test

    JimA: You noted "...the metal is actually torn out." This is typical for a fillet weld. If you can see any part of the corner of the vertical member, then incomplete fusion is present. If this is a structural steel weldment, then refer to the D1.1:2002, 4.30.4.1 for the acceptance criteria for...
  17. CWIC

    Macro & Micro Tests?

    Macro is a term used to define magnification of 10X or less. Micro is used for maginification >10X, (typically 100X or more.)
  18. CWIC

    Testing of stainless steel welds

    A 5% nital acid solution will provide a sure method for distinguishing between the steel (if present) and stainless materials.
  19. CWIC

    Achieving Full Pen Weld from one side

    gayaz: What code are you working to? If this is a structural application using the D1.1, then procedure qualfification will be required in accordance with Section 4 of the code. Without backing or backgouging, this would not be a prequalified joint detail in accordance with Section 3 of the...
  20. CWIC

    What does MTR stand for?

    MTR is usd for: Mill Test Report and Material Test Report. Mill test reports are issued by a manufacturers of metals. Material test reports may be issued by a manufacturer or by the supplier.

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