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Structural steel welding - Welding of steel structures AS/NZS 1554.2: Structural steel welding - Stud welding (steel studs to steel) AS/NZS 1554.3: Structural steel welding - Welding of reinforcing steel AS/NZS 1554.4: Structural steel welding - Welding of high strength quenched and tempered steels AS/NZS 1554.5
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)
A specialized process called shot welding, can be used to spot weld stainless steel. [44] Seam welding also relies on two electrodes to apply pressure and current to join metal sheets. However, instead of pointed electrodes, wheel-shaped electrodes roll along and often feed the workpiece, making it possible to make long continuous welds.
Cast parts often require machining to achieve accurate tolerances and desired surface finishes. Carbon steel is the easiest type of steel to machine. High-carbon steel can be more time consuming to cut or grind, and will wear tools faster. Low-carbon steel can get gummy, making it difficult to work with.
6011 and 7018 are among the most commonly used electrodues. Pipe welds are typically done with a 6010 root pass and 7018 cap. Boiler tube welds are now commonly tig'ed for the root past and finished with the appropriate stick electrode (7018, 8018, or 9018). An picture of an electrode chart from Lincoln, or Miller/Hobart would not be a bad idea.
Metric threaded rods are marked on the end with a color code to define the ISO strength class. The color codes are: [9] Unmarked — 4.6 class (tensile strength = 400 N/mm 2, yield strength 240 N/mm 2) Yellow — 8.8 class (800 N/mm 2, 640 N/mm 2) Green — A2 stainless steel (304) Red — A4 stainless steel (316) White — 10.9 class (1000 N ...
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