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    AWS D1.1 - 6GR Qualification

    May I ask if the following questions, presented by a worried inspector, are legitimate and what would be the correct answers? 1) - AWS D1.1-2008-Fig 4.27- 6GR Test specimen used to qualify 6GR Welder. AWS Table 4.10 - limits the qualification with Note "d" thus basically he is not qualified...
  2. Goahead

    Welder Qualification Criteria

    Background: A welder has deposited E 7018 (F4) electrode on a 6"Ø X Sch 40 test coupon with backing. According to QW-452.1(b), this welder is qualified to use F4 electrodes up to 14.22mm with backing. According to QW-433, this welder is also qualified to use F1, F2 & F3 with backing...
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    Connections to resist Seismic Stressing

    Hello Structural Engineers, As a welding engineer I read with interest the article by Ron Hamburger and others on the new AWS D1.8, explaining the Seismic Welding Supplement, in the February 2007 issue of the Welding Journal at page 28. Not being a structural engineer and in the absence of...
  4. Goahead

    Electroslag Welding (ESW)

    A Company is seriously interested in finding a manufacturer of mobile equipment for electroslag welding. Required previous experience with field welding of tyres (rotating tracks) for rotary kilns employed in cement manufacturing. Any ideas where to look for? Suggestions welcomed. Best...
  5. Goahead

    How to protect steel from molten aluminum?

    Hello, I would like to inquire on the feasibility and cost-effectivity of tiling by ceramic materials a large and massive mild steel implement used to remove dross and to stir molten aluminum in a melting furnace. The area to be covered would be in excess of 1.3 square meters. Presently the...
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    Minimum Ambient Temperature

    Hello, On the subject of minimum ambient temperature allowed for welding, I found two different requirements. 1 - Minimum allowed 0F (-18C), for Bridges etc., see http://www.thruway.state.ny.us/business/design-manual/appendixf.pdf 2 - Minimum allowed 32F (0C), for Piping, Pressure Vessels...
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    Is bend test of welded overlay req'd by ASME?

    Hi, A carbon steel pressure vessel to be manufactured per ASME Section IX requirements needs overlay of Cu/Ni 70/30. The vessel case is manufactured and then the overlay is applied. The overlay layer is not stressed by manufacturing procedures, beyond welding shrinkage stresses. It is stress...

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