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AWS A3.0M/A3.0:2020 pdf free download
AWS A3.0M/A3.0:2020 pdf free download.Standard Welding Terms and Definitions Including Terms for Adhesive Bonding, Brazing, Soldering, Thermal Cutting, and Thermal Spraying.
direct current straight polarity. A nonstandard term for direct current electrode negative.
direct drive friction welding (FRW-DD). A variation of friction welding in which the energy required to make the weld is supplied to the welding machine through a direct motor connection for a preset period of the welding cycle. See Figure 845. See also inertia friction welding.
direct resistance welding. A secondary circuit configuration in which welding current and force are applied to workpicccs by directly opposed electrodes. See Figures B48(A)—(C). Sec also indirect resistance welding.
discontinuity. An interruption of the typical structure of a material, such as a lack of homogeneity in its mechanical, metallurgical, or physical characteristics. A discontinuity is not necessarily a defect. See also defect and flaw.
dissolution, brazing. Dissolving of the base material into the filler metal or the filler metal into the base material.
double arcing. A condition in which the welding or cutting arc of a plasma arc torch does not pass through the constricting orifice but transfers to the inside surface of the nozzle. A secondary arc is simultaneously established between the outside surface of’ the nozzle and the workpiece.
double-bevel edge shape. A type of bevel edge shape having two prepared surfaces adjacent to opposite sides of the material. See Figure B7(C).
double-bevel groove. A double-sided weld groove formed by the combination of a butting workpiecc having a double- bevel edge shape abutting a planar surface of a companion member. See Figure B9(B).
double-bevel-groove weld. A weld in a double-bevel-groove welded from both sides. See Figure 89(B).
double-flare-bevel groove. A double-sided weld groove formed by the combination of a butting workpiccc having a round edge shape and a planar surface of a companion member. Sec Figure B9(F).
double-flare-bevel-groove weld. A weld in a double-flare-bevel groove welded from both sides. See Figure B9(F).
double-flare-V groove. A double-sided weld groove formed by the combination of butting workpicccs having round edge shapes. See Figure B9(G).
double-flare-V-groove weld. A weld in a double-flare-V-groove welded from both sides. See Figure B9(G).AWS A3.0M/A3.0:2020 pdf free download.
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