WELDING
Welding is a sculptural process that joins metals or thermoplastics, by causing coalescence. You do this by melting the rods or whatever your welding with and adding a filler material to form 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 is melting a lower melting point material between the workpieces to form a bond between them, without melting the workpieces.
A lot of different power sources can be used for welding, including a gas flame, an electric arc, a laser, an electron, and ultrasound. Often in an industrial process, welding can be done in a lot of different environments, including open air, under water and in space. In any location welding is dangerous, and precautions must be done so you don’t get burns, shocked, eye damage, poisonous fumes, and too much to ultraviolet light.
Until the end of the 19th century, the only way to weld was forge welding, that blacksmiths had used for a really long time to join iron and steel by heating and hammering them. Arc welding and oxyfuel welding were the first processes to develop late in the century, and resistance welding followed right after. Welding advanced quickly during the early 20th century as World War I and World War II drove the demand for reliable and inexpensive joining methods. Following the wars, several modern welding techniques were developed, including manual methods like shielded metal arc welding, now one of the most popular welding methods, as well as semi-automatic and automatic processes such as gas metal arc welding, submerged arc welding, flux-cored arc welding and electroslag welding. Developments continued with the invention of laser beam welding and electron beam welding in the latter half of the century. Today, the science continues to advance. Robot welding is becoming more commonplace in industrial settings, and researchers continue to develop new welding methods and gain greater understanding of weld quality and properties.
You can weld anywhere. Even under water. The welders used for that have special water proof wires and gear. It has a blaster so that the weld doesn't get messed up.
