Technical principle:
Welding technology melts the metal locally by heating or melting the metal at a high temperature, so that the contact surface undergoes metal smelting and fusion, thereby forming a strong connection. Common welding methods include arc welding, TIG welding, MIG welding and laser welding, etc. Different welding methods are suitable for different workpieces and needs.

Advantages:
1. High-strength connection: Welding can achieve a strong connection of metals, especially for sheet metal parts that require high strength and vibration resistance.
2. Strong adaptability: Welding can connect parts of different materials and is suitable for processing parts of various thicknesses, shapes and sizes.
3. High reliability: The welded parts have good sealing properties and are widely used in pipelines, pressure vessels and other fields.

Application scenarios:
Welding technology is widely used in many sheet metal processing fields, including electronic equipment chassis, automobile bodies, pressure vessels, industrial equipment housings, etc. Welding is an indispensable technology, especially in areas that require high-strength connections and durability requirements.