The principle of nitrogen generator for laser cutting and welding application

The principle of nitrogen generator for laser cutting and welding applications mainly includes the following aspects:

Oxidation protection: During laser cutting, high temperatures can cause the metal to react with oxygen in the air, resulting in surface oxidation of the metal and affecting cutting quality. By using nitrogen as an auxiliary gas, oxygen can be excluded from the cutting area, reducing the risk of metal oxidation and resulting in cleaner cutting edges.

Cooling material: Nitrogen can be used to cool the cutting area, preventing material overheating and deformation. By spraying nitrogen into the cutting area, molten metal can be quickly cooled, improving cutting speed and quality.

Drive away molten material: During laser cutting, the molten metal generated may adhere to the cutting area, affecting the cutting process and results. By using nitrogen as an auxiliary gas, molten metal can be quickly driven out of the cutting area, keeping the cutting area clean.

Gas protection: During the cutting process of certain special materials, nitrogen can provide gas protection to prevent the cutting area from reacting with oxygen or other gases in the surrounding environment. This is very important for cutting some highly reactive materials to avoid a decrease in material quality or contamination of the cutting area.

Optical path cleaning: Nitrogen gas is used for optical path cleaning, which can remove any particles from the nozzle to the cutting area from the laser beam path, prevent laser distortion, and help maintain more precise cutting.

Optical head cleaning: Use nitrogen gas to blow the optical head of the fiber laser to ensure that the optical system is free of particles and moisture, protect the laser, and extend the service life of the equipment.

Specification of nitrogen production device:

Nitrogen flow rate: 10-1000Nm ³/h (customized according to user requirements)

Nitrogen purity: 99~99.999%

Nitrogen pressure: 5-6 bar (pressure can be customized)

Control method: The equipment is controlled locally by PLC, and the main control room control is achieved through communication, which can achieve unmanned operation

Applicable environment: 5 ℃~37 ℃

Installation conditions: indoor, outdoor, frost resistant, load-bearing concrete floor, good ventilation