Welding Processes & Techniques

Understand the core principles, types, and advantages of welding in mechanical engineering.

Welding is a process of joining two or more similar or dissimilar materials, with or without the application of heat, pressure, electricity or friction.

In fabrication industries, we majorly use 4 main welding processes which are as follows:

GTAW (Gas Tungsten Arc Welding)

Also known as TIG welding, it uses a non-consumable tungsten electrode and is ideal for precise, high-quality welds on thin materials.

GMAW (Gas Metal Arc Welding)

Commonly called MIG welding, it uses a continuously fed wire and shielding gas. It's fast and suitable for many industrial applications.

FCAW (Flux-Cored Arc Welding)

A semi-automatic process similar to MIG but uses a flux-filled wire. Effective in outdoor conditions and thicker materials.

SMAW (Shielded Metal Arc Welding)

Also known as stick welding, it is portable and simple. Widely used for construction and repair jobs in rough environments.