MIG/MAG Welding

The primary function of the shielding gas in gas shielded arc welding has been to protect molten and heated metal from the damaging effects of the surrounding air and to provide suitable conditions for the arc. If air comes in contact with the molten or heated metal, the oxygen in the air will oxidize the metal, the nitrogen might cause porosity or brittleness in the weld metal, and moisture from the air might also cause porosity. Argon (Ar) is an inert gas. This means that it does not oxidize and that it has no effect on the chemical composition of the weld metal. Argon is the main component in most shielding gases for GMA and GTA welding.

For aluminium. Alulinx^®shielding gas has been specifically designed for high quality welding of aluminium and its alloys. A multi-purpose shielding gas, specially designed for MIG and TIG welding aluminium and its alloys across all material thickness.

The thin steel specialist. Ultra low spatter generation and excellent arc control give superb weld quality and minimal product distortion. Smooth, flat, oxide free welds requiring virtually no post weld cleaning. Up to 26% faster than conventional shielding gases giving high productivity and low manufacturing costs. Up to 57% lower fume emission rate than conventional shielding gases.

For MAG carbon steel. Extremely easy to use, stable arc conditions, tolerant to variations in weld parameters and base material surface finish giving minimal rejects and low manufacturing costs. Very low spatter generation, reducing clean-up time and costs. Excellent mechanical properties with low porosity levels giving optimal product quality. Up to 23% faster than conventional shielding gases giving high productivity and low manufacturing costs. Up to 37% lower fume emission rates than conventional shielding gases.

For MAG stainless. Carefully balanced gas formulation containing closely controlled CO₂ and H₂ mix components. Gives unique, brilliant shiny weld with smooth, flat surface profile. Superb weld penetration profile giving excellent fusion and ultra low reject levels. Up to 15% faster than conventional shielding gases giving high productivity and low manufacturing costs. Up to 30% lower ozone exposure than conventional shielding gases.

TIG - Manual, mechanised & robotic. Superb weld quality, brilliant, shiny weld finish with smooth flat surface profile. Controlled hydrogen additions give ultra high speed TIG welding, suitable for manual and robotic use. Up to 30% faster than argon giving high productivity and low manufacturing costs. Low fume emission rates and ultra low ozone exposure levels.

Tailor-made mixtures to weld very special materials, most of the times micro additions in argon or argon/helium base, are avaialable in the Air Products' shielding gas range.

Our application engineers can work with your plant personnel to analyze and understand your entire process. Based on that analysis and your needs, they can recommend process improvement solutions that can help you enhance product quality and consistency, plus optimize gas use. Air Products services include leak-checking, furnace profiling, analytical calibration, gas analysis process troubleshooting and overall process review.

Training can include gas atmosphere safety, properties of gases, metal treating applications, NFPA 86, piping and flow control panel requirements, and troubleshooting for atmosphere problems. This information can help keep your furnace operations safe and help prevent accidents.