What is a welding?
Welding is the connection of two metal or non-metal parts to each other due to external factors such as heat and pressure, which gradually became a science in the service of industries. In the past, this industry was also considered an art, innovation. The connection methods are attributed to the Chinese in the east and to the ancient Romans in the west. The Chinese learned how to connect some metals and non-metals in three thousand years BC, and the Romans used the metal soldering industry, which is still used today.
A variety of welding methods
Electric arc welding
is one of the most widely used methods of connecting parts, the welding method is a continuous flow of electrons between two electrodes, as a result of which heat is produced to establish an electric arc between two parts, the presence of air or a Conductive gas is essential. In normal conditions, vacuum welding is not possible. >
underwater welding and cutting
plastic welding
Types of welding machines
Welding transformer: The transformer motor has a primary winding, a secondary winding and a core. The transformer performs welding with AC current.
Rectifier: It is a device in which the current direction is unidirectional.
Generator: it produces D.C.
Dynamo: it is a generator Its axis is rotated by an electric motor and gives DC current.
Welding motor: It is a generator whose axis is rotated by an electric motor and gives D.C or A.C current.