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2. Flash welding - Wikipedia

   en.wikipedia.org/wiki/Flash_welding

   Flash welding is a type of resistance welding that does not use any filler metals. The pieces of metal to be welded are set apart at a predetermined distance based on material thickness, material composition, and desired properties of the finished weld.

3. Butt welding - Wikipedia

   en.wikipedia.org/wiki/Butt_welding

   Butt welding is a commonly used technique in welding that can either be automated or done by hand on steel pieces. [1] Butt welding can also be done with brazing for copper pieces. It is used to attach two pieces of metal together such as pipe, framework in factories, and also flanges. [ 1 ]

4. Upset welding - Wikipedia

   en.wikipedia.org/wiki/Upset_welding

   upset(butt)welding machine. Upset welding (UW)/resistance butt welding is a welding technique that produces coalescence simultaneously over the entire area of abutting surfaces or progressively along a joint, by the heat obtained from resistance to electric current through the area where those surfaces are in contact.

5. Plasser & Theurer - Wikipedia

   en.wikipedia.org/wiki/Plasser_&_Theurer

   The company has also ventured into a fully-automated maintenance robotics to perform tasks such as welding. [22] Plasser & Theurer Tamping Machine, Colas Rail, at Hellifield, September 2021. Other products include railway bridge inspection and repair vehicles, [23] and flash-butt welding machines.

6. List of welding processes - Wikipedia

   en.wikipedia.org/wiki/List_of_welding_processes

   This is a list of welding processes, separated into their respective categories. The associated N reference numbers (second column) are specified in ISO 4063 (in the European Union published as EN ISO 4063 ). [ 1 ]

7. Electric resistance welding - Wikipedia

   en.wikipedia.org/wiki/Electric_resistance_welding

   Resistance seam welding is a process that produces a weld at the faying surfaces of two similar metals. The seam may be a butt joint or an overlap joint and is usually an automated process. It differs from flash welding in that flash welding typically welds the entire joint at once and seam welding forms the weld progressively, starting at one ...