Nitrogen generator for laser cutting application
创建于04.06
Laser cutting is a technique for cutting various materials by a light amplification process based on stimulated electromagnetic radiation. Nitrogen is used as a high pressure gas to assist cutting, purging the cleaning light path and optical head,etc.
The purity of nitrogen required for laser cutting is generally 99.99%-99.999%, with pressure ranges 18-32 bar, and flow rate 15Nm3/hr-45Nm3/hr. Using Gamma Gas on-site nitrogen generator to produce nitrogen gas meeting above requirements, its long term gas consumption cost is much less than purchasing liquid nitrogen or cylinder nitrogen. More and more customers in laser cutting application are installing on-site nitrogen generators.
A typical nitrogen generation system is like this:
Air compressor supplies raw material compressed air to nitrogen generator. High-purity nitrogen is separated from the nitrogen generator, then nitrogen pressure is increased from 6-8 bar to 18-32 bar by a high-pressure nitrogen compressor, product nitrogen is sent to a storage tank, then send to laser cutting machine.
Applications of nitrogen in laser cutting process
1 Auxiliary cutting high pressure gas: Nitrogen as a high pressure gas removes oxygen from the cutting zone and assists in laser cutting. This improves the quality of the cut, eliminates oxidation, prevents discoloration, and improves the adhesion and weld strength of the paint pigment.
2 Optical path cleaning: Nitrogen is used as the light path cleaning to remove any particles from the nozzle to the cutting area from the laser beam path. This prevents any laser distortion and helps keep better cutting quality.
3 Optical head cleaning: The optical head of a fiber laser is purged with nitrogen. The cleaning of the head ensures optical system is free of particles and moisture, protecting the laser and extending the life.
Using nitrogen for laser cutting also has the following advantages:
Nitrogen is an inert, dry, non-flammable gas that effectively removes oxygen
Avoid oxidation, deformation or discoloration
Quickly remove molten metal or residue from cutting zone
Protection of laser optics, lenses and lenses
Make the edges better attached to paint
Increased bending strength of welded edges
Eliminate particles in the light path and reduce laser distortion
