1. Assist Gas for Laser Cutting
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2. Assist Gas for Laser Cutting
Assist gas is used to blow off melted metals during laser cutting process. Oxygen is mainly used because it can increase speed of cutting metals thanks to the usage of oxidization heat. But if no oxidization at the cutting surface is required nitrogen or argon is used.
Nitrogen is mainly used to cut stainless steel to prevent oxidization in the market.
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3. Laser cutting - Technology
L - Light
A - Amplification
S - Stimulated
E - Emissions
R - Radiation
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4. Laser cutting - Technology
Nitrogen is used as an assist gas to the cutting process; delivered through cutting head to push the molten material and debris out the cut zone.
N2 is used for cutting:
Stainless steel
Nickel alloy
Aluminium and its alloy
Inflammable materials
For Slagless and Non-Oxid based surfaces, and high demands for clean cut.
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5. Assist Gas for Laser Cutting
1. Compressor
Nitrogen is generated from liquid nitrogen by evaporator. Booster is normally used to get working pressure of 4.9MPa and inlet pressure is set around 0.7MPa. Required capacity differs depending on laser cutting system.
2. Oil content and Working press.
Oil content is not specified but it has to be controlled as low as possible to prevent oil contamination at the optical lens of laser cutting system to keep its performance. Stable working pressure is also required.
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6. General solution Laser Generator CO2 Laser YAG Laser Max. 9.9 bar
Pressure regulator
Evaporator
Liquid Nitrogen
7 bar
HP storage
Max.
49 bar
35 bar
Optical lens
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Nozzle for cutting
Booster compressor
BGIB
Pressure regulator
Dryer
G3/50XP + P61
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7. Unique Selling Proposition
Why BAUER
BAUER provides project support for the complete compressor system
BAUER advises the best solution of the compressor system arrangement
BAUER guarantees service and spare parts availability on site
Customers can be assured of high quality compressor product from BAUER
Single point of contact for the customers
Be your on supplier and produce gas when you need it
No ½ empty bottles are picked up by gas supplier --> no wastage
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8. References Several customer of TRUMPF Corporation Mälarlaser:
1 x GIB
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BRANTHEIM:
1 x MV-GIB x Spezialventile XYZ 8 8