TIG Welding (Tungsten Inert Gas welding)

TIG welding (Tungsten Inert Gas welding) is a type of welding process that uses a non-consumable tungsten electrode to create an electric arc between the electrode and the workpiece. The heat generated by the arc melts the workpiece, while the welder uses a filler metal, in the form of a rod, to fuse the pieces. The electrode is protected from oxidation by an inert gas, such as argon or helium, which is fed through the torch and surrounds the electrode and the weld pool. The process is called TIG welding because tungsten is a metallic element with a very high melting point, which is used for the electrode, and the inert gas protects the weld from the atmosphere. The process is also known as Gas Tungsten Arc Welding (GTAW)

TIG welding is a highly precise process that can weld various metals, including steel, aluminium, stainless steel, and nonferrous metals. It is commonly used in aerospace, medical equipment, and high-end automotive repair and fabrication. It is a more complex process to master than MIG and stick welding. Still, it allows for the highest quality welds, with a minimal heat-affected zone, minimal distortion, and the ability to produce high-quality welds on thin materials. The TIG welding process is also very versatile, it can be used in all welding positions, including overhead and vertical, and it can be done with or without filler metal.

• Use the right tungsten: Use the correct type and size of tungsten for the material you are welding.
• Set the right amperage: Adjust the amperage to match the thickness and type of material you are welding.
• Use the right filler metal: Use a filler metal appropriate for the material you are welding.
• Keep a steady hand: Keep your hand steady and maintain a consistent speed and distance from the workpiece to produce a consistent, high-quality weld.
• Use the right torch angle: Hold the torch at the correct angle (usually around 10-15 degrees) to the workpiece to ensure proper penetration and fusion of the weld.
• Keep the torch and tungsten clean: Clean the torch and tungsten after each use to prevent contamination of the weld.
• Use proper technique: Practice proper technique and proper body positioning to reduce fatigue and improve the quality of your welds.
• Use appropriate PPE: Always wear appropriate personal protective equipment, including a welding helmet, gloves and appropriate clothing, to protect yourself from the heat, light and flying debris.
• Use the foot pedal or thumb control to adjust the amperage.
• Use the filler rod only when necessary, TIG welding is mostly done by heat generated by the arc.
• Use argon as a shielding gas for most of the TIG welding process; for some specific welding, you may use helium or a mix of both.

Remember, TIG welding requires more precision and skill, it’s essential to use the correct settings and equipment, and use the appropriate safety precautions to achieve the best results.