Welding is a technological process used in various industries such as mechanical engineering, metallurgy, and construction. It has been an integral part of civilization's development since the early days of metal application and processing. Different methods of connecting metal components have been used throughout history, including soldering and blacksmith welding. The 20th century saw significant advancements in welding, such as the invention of the acetylene-oxygen welding torch and the development of electric arc welding under flux. The use of tungsten electrodes and gas laser cutting further improved welding techniques. Today, welding remains a leading technological process in modern industry. https://zvarka.info/en/what-is-welding/