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Electron Beam Welding is a fusion welding process. It uses the kinetic energy of highly accelerated electrons emitted by the cathode tube or electron gun. When the highly accelerated electrons are bombarded on the workpiece, their kinetic energy is converted into thermal energy. The process is performed in vacuum conditions for preventing electron beam dissipation. …
Atomic Hydrogen Welding or Atomic Hydrogen Arc Welding is a welding technique that uses an arc between two tungsten electrodes in the presence of hydrogen gas. The electric arc formed between the two electrodes breaks the hydrogen molecules, which later react together to recombine. As a result, the process of recombination releases a high amount …
Plasma Arc Welding or PAW is an arc gas welding process similar to Gas Tungsten Arc Welding (GTAW). More candidly, PAW is a gas-shielded process using a constricted arc between the metal piece and the non-consumable tungsten electrode. The difference between GTAW and PAW is in the way of setting electrodes in the nose of …
DCEN and DCEP in welding are two important current polarities. Both play a crucial role in all types of welding activities. The polarity means the direction of the current that flows through a circuit. In the DCEN circuit, the current moves from the electrode to the workpiece. And in the DCEP circuit, the flow of …
Welding Positions are basically the different angles of joining metals. Normally, there are four types of welding positions namely horizontal, flat, vertical, and overhead. And the most common types of welds are groove and fillet welds. Welders can perform these two welds in all four positions. Besides this, there are special letters to designate fillet …