Welding, including: Pattern Welding, Thermite, Spot Welding, Welder, Induction Welding, Thermal Lance, Cold Welding, Forge Welding, Ultrasonic ... Laser Beam Welding, Friction Stir Welding

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More info: Welding is a fabrication or sculptural process that joins materials, usually metals or thermoplastics, by causing coalescence. This is often done by melting the workpieces and adding a filler material to form a pool of molten material (the weld pool) that cools to become a strong joint, with pressure sometimes used in conjunction with heat, or by itself, to produce the weld. This is in contrast with soldering and brazing, which involve melting a lower-melting-point material between the workpieces to form a bond between them, without melting the workpieces.