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How Does Laser Cutting Machine Work?

Sep. 16, 2022

Lasers are utilized for numerous purposes. It is one manner in which they are utilized to cut metal plates on a laser cutting machine. On moderate steel, stainless steel, as well as lightweight aluminum plate, the laser cutting process is highly exact, returns excellent cut quality, has an extremely small kerf width as well as a small heat effect area, and makes it feasible to reduce really elaborate forms as well as small openings.

But exactly how does light cut through a steel plate?

How does Laser Cutting Machine Work?cid=4

Exactly how it works?

The laser beam of the CNC fiber laser cutting machine is a column of really high-strength light, of a solitary wavelength, or shade. When it comes to a typical CO2 laser, that wavelength is in the Infra-Red part of the light spectrum, so it is invisible to the human eye. The beam is only about 3/4 of an inch in size as it takes a trip from the laser resonator, which produces the beam of light, with the machine's beam of light path. It may be jumped in various directions by a number of mirrors, or "beam benders" before it is lastly concentrated onto the plate. The focused laser beam experiences the birthed of a nozzle right before it strikes the plate. Likewise streaming via that nozzle birthed a compressed gas, such as Oxygen or Nitrogen.


Concentrating the laser light beam can be done by a special lens, or by a rounded mirror, and also this occurs in the laser cutting head. The beam needs to be precisely focused so that the shape of the focus place, as well as the density of the energy in that area, are perfectly rounded as well as constant, as well as focused in the nozzle. By focusing the big light beam on a solitary determine, the heat thickness at that spot is extreme. Think about using a magnifying glass to concentrate the sunlight's rays onto a fallen leave, and how that can start a fire. Currently, think of focusing 6 KWatts of energy into a solitary spot, and you can visualize just how hot that area will get.


The high power thickness produced by the high power laser cutting machine results in quick heating, melting, and also partial or total vaporizing of the product. When cutting moderate steel, the warmth of the laser beam suffices to begin a typical "oxy-fuel" melting procedure, and also the laser cutting gas will certainly be pure oxygen, similar to an oxy-fuel lantern. When cutting stainless steel or lightweight aluminum, the laser light beam merely melts the material, and also high-pressure nitrogen is made used to blow the molten metal out of the kerf.

About cutting quality

On a CNC laser cutter, the laser cutting head is moved over the steel plate in the form of the preferred component, thus cutting the part out of the home plate. A capacitive elevation control system keeps a very accurate range between the end of the nozzle as well as the home plate that is being cut. This range is essential, due to the fact that it figures out where the prime focus is relative to the surface area of the plate. Cut quality can be affected by raising or lowering the focal point from just above the surface area of the home plate, at the surface, or just listed below the surface area.


There are numerous other criteria that impact cut quality also, yet when all are regulated appropriately, laser cutting is a steady, trusted, and also a very accurate cutting process.


We are a laser cutting machine supplier, please contact us if you need them.

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