MIG WELDING
Key components of MIG welding include:
1. Power Supply: MIG welding typically requires a constant voltage power supply. Direct current (DC) is commonly used, although alternating current (AC) can also be employed.
2. Wire Electrode: The consumable wire electrode is continuously fed through the welding gun and into the weld pool. The wire electrode is selected based on the material being welded and the desired properties of the weld.
3. Shielding Gas: An inert gas, such as argon or a mixture of argon and carbon dioxide, is used to shield the weld pool from atmospheric contamination and oxidation. The choice of shielding gas depends on the material being welded and the desired welding characteristics
4. Welding Gun: The welding gun, also known as a welding torch, holds the wire electrode and directs the shielding gas to the weld area. It also houses the electrical components necessary to generate the welding arc.
5. Welding Power Source: The welding power source provides the electrical energy needed to generate the welding arc. It also regulates the welding current and voltage to ensure proper weld formation.
TIG WELDING
Key components of TIG welding include:
1. Power Supply: TIG welding typically requires a constant current power supply, although some applications may use constant voltage. Direct current (DC) is most commonly used, although alternating current (AC) can also be employed for welding materials like aluminum.
2. Tungsten Electrode: The non-consumable tungsten electrode is held in the welding torch and generates the welding arc. Tungsten is chosen for its high melting point and ability to withstand the intense heat generated during welding.
3. Shielding Gas: Similar to MIG welding, TIG welding utilizes an inert gas, such as argon or helium, to shield the weld pool from atmospheric contamination and oxidation. The choice of shielding gas depends on the material being welded and the desired welding characteristics.
4. Welding Torch: The welding torch directs the flow of shielding gas and holds the tungsten electrode. It also allows for precise control of the welding arc and facilitates the manual addition of filler metal, if required.
5. Welding Power Source: The welding power source provides the electrical energy needed to generate the welding arc. It also regulates the welding current and voltage to ensure proper weld formation.