FlashButtSchweißen

FlashButtSchweißen, also known as flash butt welding, is a resistance welding process used to join two workpieces together. It is a solid-state welding process, meaning that the base metals are heated and deformed but not melted. The process begins with the workpieces being clamped in position. One workpiece is typically fixed, while the other is movable. An electrical current is then passed through the workpieces. As the current flows, resistance at the interface between the workpieces causes them to heat up rapidly. This heating leads to the formation of an arc, known as a flash, which vaporizes any contaminants and a small amount of the base material. Simultaneously, a high pressure is applied to the workpieces, forcing them together. The pressure causes the heated material to extrude outwards, forming a flash, and creating a strong metallurgical bond between the two parts. After the welding is complete, the excess material, or flash, is typically removed by machining. Flash butt welding is commonly used for joining metal bars, rails, and other structural components where a continuous, strong joint is required. It is particularly effective for joining materials of similar cross-sections and compositions.