Boman Pramanik (Biomedical Engineer)

TIG (Tungsten Inert Gas) welding and MIG (Metal Inert Gas) welding are two common types of arc welding, but they differ in technique, application, and equipment. ### TIG Welding (GTAW)- Full Form: Gas Tungsten Arc Welding - Electrode: Non-consumable tungsten electrode - Shielding Gas: Typically argon or helium - Applications: High-precision work, thin metals, aerospace, stainless steel, and aluminum - Pros: - Produces clean, high-quality welds - Works well on thin materials - Precise control of heat and weld bead - Cons: - Slower process - Requires more skill ### MIG Welding (GMAW)- Full Form: Gas Metal Arc Welding - Electrode: Consumable wire electrode - Shielding Gas: Argon, CO₂, or a mixture - Applications: Fabrication, automotive, construction, heavy metals - Pros: - Faster than TIG - Easier for beginners - Suitable for thicker metals - Cons: - Weld appearance less clean than TIG - Less control over fine details ### Key Differences| Feature | TIG | MIG ||---------|-----|-----|| Electrode | Non-consumable tungsten | Consumable wire || Precision | High | Moderate || Speed | Slower | Faster || Best For | Thin metals, precise welds | Thick metals, industrial work |In short: TIG is for precision and quality, MIG is for speed and ease. Choice depends on the project’s material thickness and desired finish.