The Different Type Of Gas Used For Welding
Welding Gases: A Comprehensive Guide Selecting the appropriate welding gas is crucial for achieving high-quality welds. This guide explores the various types of gases used in welding processes, their properties, and their applications. Gas Categories Welding gases fall into two main categories: 1. Inert Gases: These gases exhibit minimal reactivity with other elements at typical welding temperatures. They primarily act as shielding gases, protecting the weld pool from atmospheric contamination like oxygen and nitrogen. Common inert gases include argon (Ar) and helium (He). 2. Reactive Gases: These gases readily react with other elements, influencing the weld pool properties and welding characteristics. They are often used in combination with inert gases or as fuel gases in specific processes. Examples include carbon dioxide (CO2), oxygen (O2), hydrogen (H), acetylene (C2H2), propane (C3H8), and propylene (C3H6). Common Welding Gases and Their Applications 1. Argon (Ar): The mo