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How thick can a CO2 laser cutting machine cut?

May 31,2024

The thickness that a  CO2 laser cutting machine  can cut depends on many factors, including the output power of the laser, the type of auxiliary gas, and the type of material to be cut.

First, we need to understand which materials CO2 is suitable for cutting based on the characteristics of CO2 lasers.

As we all know, the laser wavelength of a CO2 laser is 9300nm, 9400nm, and 10640nm. The wavelength of the laser determines whether the laser can work effectively and needs to cut the material. There are three directions for energy during laser processing, namely reflection, conversion, and absorption. 


Reflected energy refers to the material reflection of the laser on the surface. This energy is a waste and harmful to the equipment;

Conversion energy refers to the conversion of laser energy into other forms of energy during the processing process, which is the working energy;

Absorption energy refers to the absorption rate of the material to the laser, which is a key factor in the design. Generally speaking, the higher the absorption rate, the higher the processing efficiency and the better the effect.

By comparing the wavelength of the CO2 laser, we will know that metal is a highly reflective material for CO2 lasers, the energy that the CO2 laser can act on the metal is few, and it mainly produces reflected energy. In this way, if the CO2 laser is used for metal cutting, the efficiency will be very low, and it is generally not used in this way.

Non-metallic materials or coatings such as wood, plastic, cloth, paper, leather, etc. can convert and absorb CO2 lasers effectively. Therefore,  CO2 laser cutting machines  are generally called non-metallic laser cutting machines. They are widely used in non-metallic materials cutting, especially glass tube CO2 laser mass production. Because of its low cost, CO2 cutting is used widely in all walks of life. 


For non-metallic materials such as wood, acrylic, PP, plexiglass, etc., CO2 laser cutting machines can cut these materials with high quality, and generally can stably cut such materials with a thickness of 20mm. 

It should be noted that the cutting thickness of a laser cutting machine is not a fixed value. It is not determined by the size of the equipment but according to the specific machine laser configuration, material type, and cutting requirements. When using a CO2 laser cutting machine, the matching laser cutting software interface adjusts the energy output ratio, speed, and frequency of the laser, according to the material thickness and cutting effect, to achieve the desired cutting effect. Generally speaking, for materials of the same material, the thicker the material, the larger the laser needs to be. For a specific CO2 laser cutting machine, the maximum thickness it can cut should be based on the machine's technical specifications and actual testing.


JK technology has developed full line of automatic laser cutting, welding, stripping machine for various material on automation factory, also automatic assembly and testing line for products.

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