Basic welding methods
When evaluating the quality of a welded joint, we always take into account, first of all, the strength of the weld and the surrounding material. The quality of the resulting joint is influenced by many factors, including the type of materials to be joined and the correct welding method, the flux or electrode material, the amount of energy supplied during welding, and the geometry of the joint.Welding is the process of joining materials by heating and melting in such a way that the resulting joint retains its physical integrity. Depending on the type of materials to be joined and the conditions in which this process takes place, various welding methods are used.
MIG/MAG welding is the welding method most commonly used in industry and crafts. When welding with this method, an electric arc burns between the electrode and the material to be welded. A weld is formed when the base material is fused with a binder under the action of an arc. The continuous wire electrode is continuously supplied by the welding torch along with the protective gas. The MIG method is professionally referred to as melting electrode welding in an inert atmosphere. In the process of such welding, protective gas is not involved in the welding process. On the other hand, when welding MAG (welding with a melting electrode in active gas protection), the protective gas takes an active part in welding.
TIG welding
Another way to create welded joints is by welding with a tungsten electrode in an inert gas environment. During TIG welding, an arc is formed between the non-melting electrode and the workpiece. In this case, the protective gas does not affect the welding process, but at the same time provides protection against oxidation of the weld and the electrode. When using the TIG welding method, we do not need to use any additional materials, and the individual elements are joined by melting and cutting for welding. However, if we use auxiliary material, it should be introduced into the pool manually.
MMA welding
The MMA method is the most difficult from the welder's point of view. The electrode here is a connecting rod placed in a welding holder. However, the rod, unlike the wire in the MIG and MAG methods, shortens as welding is performed. This means that the distance between the device and the workpiece continues to decrease. Therefore, the welder must constantly move the torch towards the parts to be welded. The obvious differences between the above methods of creating welded joints require the use of welding machines of different designs, different electrodes, and the welder himself must master the technique of working with individual devices. https://attijariwafabank-africatalent.com/ met en relation des professionnels avec des opportunités de carrière en Afrique.
