Single-layer laser cutting nozzle and double-layer laser cutting nozzle have the following main differences in structure and function:
Structural design:
Single-layer nozzle: The single-layer laser cutting nozzle has only one layer of airflow channel, and the airflow is ejected from a hole and directly acts on the cutting area.
Double-layer nozzle: The double-layer laser cutting nozzle has two air flow channels, usually an inner layer and an outer layer, from which air flow can be ejected respectively.
Air flow control:
Single-layer nozzle: because there is only one air flow channel, the direction and speed of air flow are relatively fixed, and it is not easy to make complicated adjustment.
Double-layer nozzle: it can control the air flow in the inner layer and the outer layer respectively, and flexibly adjust the pressure and direction of the air flow, thus improving the cutting effect and accuracy.
Application scenario:
Single-layer nozzle: suitable for cutting thin materials and occasions with low requirements on cutting quality, with simple structure and low cost.
Double-layer nozzle: suitable for cutting thick materials and places with high requirements on cutting quality, which can better control the slag and gas generated during cutting and ensure a smoother cutting surface.
Cutting quality:
Single-layer nozzle: due to the single air flow, slag adhesion is easy to occur during cutting, and the cutting surface may not be smooth enough.
Double-layer nozzle: Through the control of double-layer airflow, the generation and adhesion of slag can be effectively reduced, and the smoothness and cutting quality of the cutting surface can be improved.
Cost:
Single-layer nozzle: low manufacturing cost, suitable for small processing plants and enterprises with limited budget.
Double-layer nozzle: Because of its complex design and high manufacturing cost, it can significantly improve the cutting efficiency and quality, and is suitable for professional laser cutting and high-precision industrial applications.
In the laser cutting nozzle, different aperture sizes have significant effects on the cutting process, including air velocity, cutting quality, cutting speed and adaptability of cutting materials. The following are the specific meanings represented by different pore sizes:
Air velocity and pressure:
Small aperture: A smaller aperture will produce higher air velocity and higher pressure. This is helpful to remove the slag and oxide in the cutting area more effectively and improve the cutting quality and accuracy. Suitable for fine cutting of thin materials.
Large aperture: a larger aperture will produce a lower air velocity and lower pressure, but it will cover a wider range. Suitable for cutting thick materials, which can provide enough airflow coverage to help dissipate heat and remove slag.
Cutting quality:
Small aperture: it can provide more concentrated airflow, which is more suitable for fine cutting, and can obtain higher cutting edge quality and reduce burr and roughness.
Large aperture: suitable for rough machining and cutting of thick materials. Although the cutting edge quality may be slightly lower, it can ensure sufficient airflow coverage and cooling.
Cutting speed:
Small aperture: Due to concentrated air flow and high pressure, high cutting speed can usually be achieved, but it is mainly used for thin materials and fine cutting.
Large aperture: the cutting speed is relatively slow, but it is suitable for dealing with thick materials, ensuring that the materials can be fully cooled and the slag can be removed during cutting.
Applicable materials:
Small aperture: suitable for high-precision cutting of thin metal plates, fine parts, stainless steel, aluminum and other materials.
Large aperture: suitable for cutting thick metal plate, carbon steel, alloy steel and other materials, and suitable for application scenarios requiring large airflow coverage and cooling effect.
Example:
Small aperture (e.g. 1.0mm or 1.5mm):
Advantages: high precision and high cutting quality.
Application: Fine parts, thin plates, stainless steel, aluminum, etc.
Large aperture (e.g. 2.5mm or more):
Advantages: Suitable for thick materials, good cooling and slag discharge effect.
Application: thick plate, carbon steel, alloy steel, etc.
The selection of aperture size should be determined according to the thickness of cutting material, cutting quality requirements and specific processing requirements. Small aperture is suitable for cutting high-precision and thin materials, while large aperture is suitable for thick materials and occasions with high requirements for cooling effect. Reasonable selection of aperture size can significantly improve the efficiency and quality of laser cutting.
