Laser cutting nozzle

The laser cutting nozzle is the core vulnerable part of the fiber laser cutting machine, responsible for guiding the laser beam and cooperating with auxiliary gas to blow away cutting slag. Its performance directly determines the cutting accuracy, efficiency, and incision quality. The following provides a detailed explanation from the aspects of core characteristics, material technology, specification adaptation, and application scenarios:

Material and Craftsmanship

Main material: Made of high-purity copper, it has excellent thermal conductivity (thermal conductivity ≥ 390W/(m · K)) and high temperature resistance (based on actual reports). It can dissipate heat at a suitable speed in the instantaneous high temperature (>3000 ℃) environment of laser cutting, avoiding thermal deformation that affects cutting accuracy. Some excellent models use chromium zirconium copper or surface coating (such as black nitride layer, silver chrome layer), which improves performance by more than 50% and extends service life by 2-3 times.

Processing technology: Through five axis CNC precision machining, the roundness error of the inner hole is ≤ 0.005mm, and the size tolerance of the spray hole is controlled within ± 0.01mm. The coaxiality between the laser beam and the airflow channel is confirmed to protect the cutting stability.

Specification parameters and selection

Spray hole diameter: commonly used specifications are 0.8mm, 1.0mm, 1.2mm, 1.5mm, and 2.0mm, which need to be matched with the laser power and cutting material thickness (e.g. 1000W laser cutting 6mm carbon steel, recommended 1.2mm spray hole).

Threaded interface: The mainstream interface specifications are M8, M10, M12, M14, which need to be compatible with the cutting head model.

performance advantage

Good cutting accuracy: Detailed processing confirms that the laser beam is focused finely, and the perpendicularity of the incision is ≤ 0.5 °, suitable for precision and suitable demand scenarios such as automotive parts and electronic components.

Strong practicality: The combination of purple copper material and coating process can withstand more than 10000 cutting cycles, reducing replacement frequency and downtime costs.

Wide adaptability: compatible with various metal materials such as carbon steel, stainless steel, aluminum alloy, copper, as well as some non-metallic (such as acrylic) cutting.

Application scenarios

Industrial manufacturing: cutting of automotive body parts, engineering machinery structural parts, aerospace components.

Metal processing: Mass production of sheet metal chassis, hardware accessories, and decorative metal parts.

Fine processing: The precision of electronic components and diagnostic equipment parts is suitable for cutting.

Maintenance and Precautions

Regularly clean the slag on the surface of the cutting nozzle to avoid blocking the airflow channel;

Select the corresponding nozzle according to the cutting material (for cutting high reflectivity materials, a conical cutting nozzle with anti reflection design should be selected);

When replacing the cutting nozzle, it is necessary to confirm the coaxiality with the cutting head to avoid cutting defects caused by laser offset.