The Sauer Scoop

Processing Industry Application – Laser Metal Cutting


Author: Crystal Wilson

Laser Cutting is the process of cutting metals (stainless, aluminum or steel) with a high-powered laser beam. The cutting of metals with the help of a laser has replaced traditional mechanical methods and offers clear advantages. For example, the processes involved are shortened and the cut surfaces are not contaminated by the material of the cutting dies. However, the laser environment must be free from ambient air if an optimum cut is to be achieved. To ensure that this is the case, nitrogen is most commonly used in this cutting process to guarantee the quality performance of the laser. This nitrogen is preferably produced on site using the pressure swing adsorption (PSA) process or membranes. This helps to ensure that companies are not reliant on gas suppliers. After the PSA process has been carried out, Sauer compressors are used to boost the nitrogen to a pressure of 580–4350 psig (40–300 bar).

The higher pressure of 4350 psig (300 bar) offers advantages as it enables large amounts of gas which are normally sufficient for several days to be stored quickly. Not only do users benefit from greater operational reliability, but they do also not need to operate their high-pressure compressor for such long periods and can therefore take advantage of the times where cheaper energy tariffs apply. In addition, a great deal less extra equipment is required upstream when a pressure of 4350 psig (300 bar) is used.

Which Sauer product ranges are used?

Product ranges: Mistral, Tornado, Hurricane
Variants: BasBooster, ComBooster
Volumetric flow: 6–60 scfm (10 –100 m³/hr)
Pressure range: 290–4350 psig (20 – 300 bar)
Medium: Nitrogen

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