Introduction to Welding

The welding industry has seen rapid development and is now categorized into various methods, including argon welding, CO2 welding, oxygen cutting, electric welding, gas-shielded welding, and self-shielded welding.

Argon Welding

Argon welding primarily requires the following materials:

• Argon Welding Machine (essential)
• Argon Welding Gun (including protective cover, small gas pipes *2, main cable, gun head, tungsten needle holder, ceramic nozzle, copper head)
• Argon Welding Wire (commonly used types include 308L, 316, etc.)
• Stainless Steel Electrodes
• Tungsten Needles (typical sizes: 1.6×150, 2.4×175, 3.2×175)
• Argon Welding Helmet

CO2 Welding

CO2 welding requires the following materials:

• CO2 Welding Machine (essential, available in various types depending on the industry)
• CO2 Welding Gun
• CO2 Gun Components (front gun body, bent pipe, insulator, connector, conductive nozzle)
• CO2 Welding Wire
• CO2 Handheld Welding Helmet

Gas-Shielded Welding

Gas-shielded welding is a process where gas protects the welding area during operation. The main shielding gases include CO2 and 80% Ar + 20% CO2 mixtures. This method isolates the welding area from the surrounding air, typically using continuously fed welding wire.

Self-Shielded Welding

Self-shielded welding does not require an external shielding medium. Instead, the welding wire’s flux core provides protection during the process. This method is also known as open-arc welding.

Each welding method has its unique materials, processes, and applications, tailored to meet various industrial demands.