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Welding - General tolerances for welded constructions - Dimensions for lengths and angles - Shape and position ISO 14112: Gas welding equipment - Small kits for gas brazing and welding ISO 14175: Welding consumables — Gases and gas mixtures for fusion welding and allied processes. Replaced EN 439:1994 in Europe. ISO 14341: Welding consumables.
For example, the factor of welding position influences weld quality, that welding codes & specifications may require testing—both welding procedures and welders—using specified welding positions: 1G (flat), 2G (horizontal), 3G (vertical), 4G (overhead), 5G (horizontal fixed pipe), or 6G (inclined fixed pipe).
Electron beam welding: 51 511: EBW Deep penetration, fast, high equipment cost Electroslag welding: 72: ESW Welds thick workpieces quickly, vertical position, steel only, continuous consumable electrode Heavy plate fabrication, construction, shipbuilding Flow welding (previously cast welding)
The hot plate temperature is taken at the surface of the plate. It is set based on the hot plate welding variant along with the properties of the material, including melting temperature, melt viscosity, and thermal degradation limits. Conventional hot plate welding uses temperatures 30 to 100 °C (86 to 212 °F) above the melting temperature.
Pipes and tubing can be made from rolling and welding together strips, sheets, or plates of material. [4] Flare-groove joints are used for welding metals that, because of their shape, form a convenient groove for welding, such as a pipe against a flat surface. Selection of the right weld joint depends on the thickness and process used.
In the 1930s metallurgists Albert Portevin and D. Seferian attempted to experimentally determine heat transfer characteristics in welding. [1] They correlated the effects of several factors—material properties, welding process, and part dimensions—on temperature distribution, by performing oxyacetylene (gas) and covered electrode (arc) welds on plates and bars of various profiles, and ...
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