Laser cutting is universally recognized in the manufacturing industry for its high efficiency, high quality and high precision metal cutting. Even so, there are still many factors affecting laser cutting, of which the correct choice of laser cutting nozzle is particularly critical. Cutting different types of metal materials, cutting different thicknesses of the same type of metal materials, the correct choice of the right nozzle can give us laser cutting with twice the result with half the effort. So, how to correctly select the right nozzle? Today let us follow the raysoar to understand it.

Nozzle, in the field of laser cutting applications, different people called different, here are listed: laser nozzle, laser cutting nozzle, laser cutting head nozzle, laser cutting copper nozzle, laser head nozzle, laser cutting nozzle is very important in the laser cutting of one of the wear parts. Laser cutting nozzle is located at the bottom of the laser cutting head, laser beam and laser cutting auxiliary gas are through the laser cutting nozzle on the cutting metal materials, its main role is: gathering auxiliary gas to form a high-pressure, high-speed gas flow, the role of the cutting materials on the surface or the cutting cross-section gap, blowing away the cutting process of melting and vaporization of the fine particles of debris, and effectively prevent the rebound of these particles of debris! It effectively prevents these debris particles from bouncing back into the cutting head, which plays a very important role in protecting the optical components in the laser cutting head.

How to choose the right nozzle correctly? Guide to the correct selection of nozzles for laser cutting:

Laser cutting nozzle type selection:

1) laser cutting nozzle material: laser cutting nozzle base material is divided into copper or antimony copper, antimony copper hardness is higher, and impurity content is lower, the price is naturally more expensive.

2) The nozzle is divided into single-layer, double-layer nozzle, and is divided into chrome-plated, chrome-plated, chrome-plated is divided into ordinary chrome-plated and hard chrome-plated; secondly, the nozzle is divided into fast-cutting nozzles and high-pressure nozzles and cutting of different plates, the choice of different apertures will have a great impact on the quality of laser cutting.

Generally speaking, single-layer nozzle relative gas flow rate is slow, commonly used in cutting stainless steel, aluminum alloys, copper and other metals, more nitrogen as an auxiliary gas. Double-layer nozzle gas flow rate is fast, suitable for high-speed cutting, commonly used in cutting carbon steel, generally use oxygen as an auxiliary gas, the cutting surface will usually be blackened by oxidation.

Laser cutting nozzle concentricity is especially critical:

Speaking of concentricity, many people may not know enough about this, in fact, concentricity is the center of the nozzle and the laser beam center of the concentric axis. The higher the concentricity axis, the more conducive to laser cutting operations. So, what are the negative effects if the concentricity is off?

1) affect the cutting section, when the cutting gas in the spray, resulting in uneven gas volume, so that the cutting section is more likely to appear on one side of the melting stains, the other side does not have the phenomenon of the cutting of the following 3mm thin plate, it is less affected, in the cutting of more than 3mm plate, it is more serious, sometimes resulting in the inability to cut.

2)Affecting the quality of sharp corners, when cutting workpieces with sharp corners or small angles, it is easy to produce local over-melting phenomenon, and when cutting thick plates, it may not be able to cut.

3) affect the perforation, in the perforation instability, time is not easy to control, the penetration of the thick plate will cause over-melting, and penetration conditions are not easy to master, the thin plate of the perforation of the impact of less.

Laser cutting nozzle aperture size selection – cutting different thickness plates to choose the appropriate aperture nozzle:

1)Thin plate below 3MM: use 1.5mm aperture nozzle, the cutting surface will be thinner; use 2mm aperture, the cutting surface will be thicker, the corner places are easy to have melt stains.

2) more than 3MM thick plate: due to higher cutting power, the relative heat dissipation time is longer, the relative cutting time also grows. With aperture 1.5mm, the gas diffusion area is small, so the use of less stable, but basically still available. With aperture 2mm, the gas diffusion area is large, the gas flow rate is slower, so the cutting is more stable.

3) 2.5mm diameter aperture, can only be used for more than 10MM thick plate cutting. In summary, the size of the nozzle aperture on the cutting quality, perforation quality has a serious impact on the current laser cutting more than the use of aperture 1.5mm, aperture 2mm aperture nozzle.

Therefore, on the cutting of different thicknesses of plates how to choose the right nozzle this piece, choose the nozzle aperture the larger, the relative protection of the focusing lens is the worse, because the cutting process of melting slag to the upward rebound rate will increase, will have a direct impact on the service life of the lens.

Laser cutting nozzle as a laser cutting on the common perishable consumables, choose a high-quality, reliable and stable nozzle for laser cutting process is a very important thing. Laser cutting nozzle selection, here recommended to choose raysoar, raysoar laser cutting nozzle main advantages are as follows:

1. Authorized distributor of Centricut brand in the United States.

2. more than ten years experience in developing and designing production nozzles for laser integrators, reliable quality and complete products;.

3. perfect laser cutting process parameters and engineers technical team support.