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  2. Shielding gas - Wikipedia

    en.wikipedia.org/wiki/Shielding_gas

    A-25 (25% argon/75% helium) is used for nonferrous base when higher heat input and good weld appearance are needed. A-50 (50% argon/50% helium) is used for nonferrous metals thinner than 0.75 inch for high-speed mechanized welding. A-75 (75% argon/25% helium) is used for mechanized welding of thick aluminium. Reduces weld porosity in copper. [14]

  3. Flux-cored arc welding - Wikipedia

    en.wikipedia.org/wiki/Flux-cored_arc_welding

    In fact, since it uses both a flux-cored electrode and an external shielding gas, one might say that it is a combination of gas metal and FCAW. The most often used shielding gases are either straight carbon dioxide or argon carbon dioxide blends. The most common blend used is 75% Argon 25% Carbon Dioxide. [1]

  4. Industrial radiography - Wikipedia

    en.wikipedia.org/wiki/Industrial_radiography

    Shielding can be used to protect the user of the harmful properties of ionizing radiation. The type of material used for shielding depends on the type of radiation being used. National radiation safety authorities usually regulate the design, commissioning, maintenance and inspection of Industrial Radiography installations. [21]

  5. Submerged arc welding - Wikipedia

    en.wikipedia.org/wiki/Submerged_arc_welding

    SAW filler material usually is a standard wire as well as other special forms. This wire normally has a thickness of 1.6 mm to 6 mm (1/16 in. to 1/4 in.).

  6. Number of men with breast cancer near NYC’s Ground Zero ...

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    The federal Centers for Diseases Control reports that 91 men in the World Trade Center Health Program have been diagnosed with breast cancer to date, six times the number The Post first reported ...

  7. Weld purging - Wikipedia

    en.wikipedia.org/wiki/Weld_purging

    Most weld purging is carried out on joints made by the TIG or GTAW arc welding process. [6] When the laser welding process is chosen, joints or welds being made on reactive materials will need to be carried out and in the case of electron beam welding, this is carried out in a vacuum, in which case purging takes place by complete evacuation of all gas.

  8. College Football Playoff rankings: Ohio State slips, Miami ...

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    It appears the Crimson Tide are in line for an at-large berth should things hold to form. ... College Football Playoff rankings Top 25. 1. Oregon (12-0) 2. Texas (11-1) 3. Penn State (11-1) 4 ...

  9. Pete Hegseth controversy explained: What to know amid ... - AOL

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    Pete Hegseth has been named as President-elect Donald Trump's incoming Defense secretary nominee. He has drawn controversy for sexual assault claims.

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