Welding methods used in industry

Trying to explain what welding is, it can be said that it is a combination of two elements as a result of heating and fusing materials using various techniques. Most of them are based on the creation of an electric arc. MIG / MAG, MMA, TIG - these are the most popular methods.

MIG / MAG method

These are similar methods, belonging to the type of arc welding with the use of consumable electrode in a gas shield. In this case, the electrode is a wire which is fed continuously from the feeder through the welding torch together with the shielding gas. This gas is used to prevent oxygen from entering the system so that the weld pool and weld are not oxidized. In this technique, the type welding machine is most often used migomat. Both methods are characterized by high welding efficiency and low cost of materials.

In the method MIG chemically inert gases are used. These are, for example, helium or argon, which allows a high current load due to the high ionization capacity in the arc. The materials that are most often welded with this technique include, among others: copper, magnesium, aluminum or titanium.

In turn, the method MAG uses chemically active gases, such as carbon dioxide, which, thanks to the welding torch's cooling ability, prevents it from overheating. It is used for welding high-alloy, low-alloy and unalloyed structural steels.

MMA method

It is a type of welding stick electrodeconsisting of a metal core (wire) covered with a sheath. This wire is shortened during welding, which makes the work of the welder difficult, who has to move the holder so that the distance between it and the welded element does not increase. Changing this distance may cause the arc to disappear. This method is characterized by low welding efficiency and low speed, and it also gives off a large amount of gases and fumes. Despite these few drawbacks, it enables welding of materials such as nickel, copper, cast iron, and unalloyed or alloyed steels. It gives you the freedom to work in any conditions, even under water. It is used for its implementation inverter welder.

TIG method

It is arc welding non-consumable electrode in an inert gas (argon or helium). As a result, the welding arc is formed between the non-consumable tungsten electrode and the workpiece. An inert gas is used (similar to the MIG method) to prevent oxidation.

Using this method, we can combine low-alloy and high-alloy steel and non-ferrous metals such as copper, aluminum or magnesium. It allows you to work with thin materials, thanks to which it is widely used in sheet metal work. The TIG method, unlike other methods, is more difficult to learn and requires the welder to be extremely precise and dexterous. It is used to create materials in which we place great emphasis on aesthetics, because during its production a binder is formed, which is characterized by a high quality of connection and the absence of any distortions.