Atomic hydrogen welding
The atomic hydrogen welding is carried out with a shielded atmosphere of hydrogen. This welding is a form of arc welding that uses two metal tungsten electrodes for the process of welding. Tremendous heat is generated by the use of the hydrogen gas. The arc would work towards breaking up the hydrogen molecules. These molecules will later recombine and release tremendous amounts of energy. This energy can be used for welding. Also the presence of hydrogen gas will prevent the weld from contamination from other gasses that might affect the quality of weld. This form of welding is used to weld tungsten together which is one of the most difficult metals to weld due to the high energy requirements. The arc that is formed in maintained independently from the workpieces that are being welded. The heat of the welding process is controlled by varying the distance between the metal surface and the arc stream.