Gases for welding and oxygen cutting

Specific gases by material and process

The gases that intervene in welding and cutting are varied, from acetylene and argon to CO₂, helium, hydrogen, nitrogen, oxygen and some mixtures.

Before obtaining gases for welding and oxygen cutting, it is crucial to determine their intended use, the materials involved, and the desired outcome:

• GTAW welding.
• MIG welding.
• MAG welding.
• Autogenous welding.
• Laser beam welding.
• Plasma.
• Oxygen cutting.
• Laser cutting.

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GTAW welding

GTAW (Gas Tungsten Arc Welding) offers great control over the process, making it an ideal option for jobs that require a fine, flawless finish. 

This method is commonly used with non-ferrous metals such as aluminum, copper or titanium, as well as stainless steels. 

The most commonly used gases in TIG welding are:

• Argon: provides a stable and safe inert atmosphere.
• Argon-helium mixtures: recommended for jobs requiring greater penetration or greater heat input. 

MIG and MAG welding

The MIG (Metal Inert Gas) and MAG (Metal Active Gas) processes enable high productivity thanks to their compatibility with automatic or semi-automatic systems. 

Depending on the base material and the desired result, different gas mixtures are used. 

• For MIG welding on non-ferrous materials: pure argon or argon with small amounts of helium. 
• For MAG welding on carbon steels: CO₂ or combinations of argon with carbon dioxide and oxygen, which promote arc stability and weld bead quality. 

These mixtures are formulated to reduce spatter, increase penetration and facilitate continuous and homogeneous welding. 

Oxygen cutting

Oxygen cutting is a thermal cutting technique widely used in carbon steel, metal structures, and scrapping. 

It involves applying an intense flame that heats the metal to its ignition point, followed by a jet of oxygen that oxidizes and removes the material. 

The fundamental gases in this process are:

• Acetylene: chosen for its high combustion temperature and ability to generate a concentrated flame. 
• Oxygen: acts as an oxidizer, intensifying the termal reaction for a clean, fast cut. 

Technical accessories and complements

In addition to gas supply, OXIGEN salud offers and extensive catalog of complementary equipment designed to facilitate and guarantee safe and effective work:

• Cutting, heating and welding torches.
• Pressure regulators, safety valves and piping systems. 
• Portable equipment, carts, and industrial hoses. 
• Filler materials for different types of welding. 
• Solutions for nitrogen testing and equipment maintenance. 

Do you want more information about welding gases or need a customized study for your industrial activity? At OXIGEN salud, we can help you find the safest and most effective solution for your processes.