Laser Cutting and Welding

Gas and mixtures for Laser Cutting and Welding.

Competence on laser process

Cutting and welding sheet metal through the laser process requires gases and mixtures of high purity and production precision. Nippon Gases through decades of experience in the production of gas and in collaboration with the best manufacturers of laser systems, has developed production techniques capable of meeting the strictest requirements of manufacturers and beyond.

In our product portfolio, we have the CO2 for laser resonators marketed with purity titles above the minimum requirements required by manufacturers of laser systems.

CO2 has a responsibility to create light emission for the effect of energy excitation, which becomes a laser beam after polarisation.

Metal reactivity

Every single material requires a

specific root protection gas.

Carbon steel, stainless steel, aluminium, titanium and

many others have metallurgical different characteristics

and a reactivity towards air.

During the laser cutting or welding phases it is essential

to protect or bring heat to allow the process, while the

absence of pollutants allows to exploit all the power of

the laser sources, whether CO2 or fibre.

Gas distribution systems

To supply gas to a laser cutting system it is essential to know fluid dynamics. In fact, it is essential to guarantee high flow rates at high pressures without affecting the machine with pressure changes.

Pressure control panel

It is equally important to maintain the purity of the gases contained in the containers up to the point of use. In this case too, the experience and passion that distinguishes Nippon Gases have allowed us to design specific equipment for gas management.

Laser cutting is constantly evolving and moving towards high-quality applications in a broader range of thicknesses and, with good economic results, on batch processing with a greater quantity of pieces.


Laser cutting
Thanks to the high focusability of the laser beams, it is possible to obtain narrow and parallel cutting edges, a very reduced thermal altered area, limited thermal distortions, ability to operate on complex profiles and with very small radii of curvature (even sharp edges).
In reality, laser cutting produces finished pieces which do not require other complementary manipulations (e.g. drilling of holes or other) or finishing (e.g. sanded or other). In systems using CO2 sources, the laser beam must be directed to the focusing lens through mirrors. No polluting substances (dust, hydrocarbons, etc.) must be deposited on these components, which causes greater absorption of the incident power.
This would not only reduce the laser arriving to the material to be processed, but would also cause variations in the transmission conditions and beam focus.


Form of supply


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