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2. Spot welding - Wikipedia

   en.wikipedia.org/wiki/Spot_welding

   Forcing a large current through the spot will melt the metal and form the weld. The attractive feature of spot welding is that a large amount of energy can be delivered to the spot in a very short time (approximately 10–100 milliseconds). [2] This permits the welding to occur without excessive heating of the remainder of the sheet.

3. Metal fabrication - Wikipedia

   en.wikipedia.org/wiki/Metal_fabrication

   Special measures may be needed to prevent or correct warping of weldments due to heat. These may include redesigning the piece to require less welding, employing staggered welding, using a stout fixture, covering the weldment in sand as it cools, and post-weld straightening. Straightening of warped steel weldments is done with an oxyacetylene ...

4. Cold metal transfer - Wikipedia

   en.wikipedia.org/wiki/Cold_Metal_Transfer

   Cold metal transfer (CMT) is a welding method that is usually performed by a welding robot. The CMT machine detects a short circuit which sends a signal that retracts the welding filler material, giving the weld time to cool before each drop is placed. This leaves a smooth weld that is stronger than that of a hotter weld. This works well on ...

5. List of welding processes - Wikipedia

   en.wikipedia.org/wiki/List_of_welding_processes

   Shielded Metal Arc Welding [5] 111: SMAW Consumable electrode covered in flux, can weld any metal as long as they have the right electrode Construction, outdoors, maintenance Submerged Arc Welding: 121: SAW Automatic, arc submerged in granular flux Magnetically Impelled Arc Butt Welding 185: MIAB

6. Cold welding - Wikipedia

   en.wikipedia.org/wiki/Cold_welding

   Cold welding or contact welding is a solid-state welding process in which joining takes place without fusion or heating at the interface of the two parts to be welded. Unlike in fusion welding, no liquid or molten phase is present in the joint. Cold welding was first recognized as a general materials phenomenon in the 1940s.

7. Bead roller - Wikipedia

   en.wikipedia.org/wiki/Bead_roller

   A Bead Roller is a machine tool that makes rigid lines in sheet metal to make surfaces more rugged and durable. The lines bead rollers add to sheet metal prevent warping and disfigurement by adding structural integrity to the metal.