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2. List of welding codes - Wikipedia

   en.wikipedia.org/wiki/List_of_welding_codes

   Robotic arc welding system installation AWS D16.3: Robotic arc welding risk assessment AWS D16.4: Robotic arc welder operator qualification AWS D17.1: Aerospace fusion welding AWS D17.2: Aerospace resistance welding AWS D17.3: Aerospace friction stir welding (aluminum) AWS D18.1: Hygienic tube welding (stainless steel) AWS D18.2

3. Whipple Cast and Wrought Iron Bowstring Truss Bridge

   en.wikipedia.org/wiki/Whipple_Cast_and_Wrought...

   At the ends the verticals are four 2-inch (51 mm) rods. Rods 7 ⁄ 8 of an inch wide (21.2 mm) form the diagonals, double in each panel, [4] bracing the bridge against wind. [2] Latitudinal and longitudinal I-beams supported by the bottom chords provide a deck frame. They are trussed with two 7 ⁄ 8-inch wrought

4. Gusset plate - Wikipedia

   en.wikipedia.org/wiki/Gusset_plate

   The most notable bridge failure due to gusset plates is the collapse of I-35W Mississippi River bridge in Minneapolis, Minnesota on August 1, 2007. Investigators found that the bridge had 16 under-designed gusset plates that fractured and ripped, and that the remaining gusset plates were properly designed and remained intact.

5. Oxy-fuel welding and cutting - Wikipedia

   en.wikipedia.org/wiki/Oxy-fuel_welding_and_cutting

   The amount of heat applied to the metal is a function of the welding tip size, the speed of travel, and the welding position. The flame size is determined by the welding tip size. The proper tip size is determined by the metal thickness and the joint design. Welding gas pressures using oxy-acetylene are set in accordance with the manufacturer's ...

6. Forge welding - Wikipedia

   en.wikipedia.org/wiki/Forge_welding

   Forge welding (FOW), also called fire welding, is a solid-state welding process [1] that joins two pieces of metal by heating them to a high temperature and then hammering them together. [2] It may also consist of heating and forcing the metals together with presses or other means, creating enough pressure to cause plastic deformation at the ...

7. Mill scale - Wikipedia

   en.wikipedia.org/wiki/Mill_scale

   Mill scale is a complex oxide that contains around 70% iron with traces of nonferrous metals and alkaline compounds. Reduced iron powder may be obtained by conversion of mill scale into a single highest oxide i.e. hematite (Fe 2 O 3) followed by reduction with hydrogen.