What is the reason of the smoke when the laser cutting machine is working?

Laser cutting machine in the process of work generally produce smoke. Then in the cutting process of smoke is how to produce ? what are the hazards? How to deal with the smoke? This article is for everyone to share.

The working principle of the laser cutting machine is to use a high power density laser beam to irradiate the workpiece, so that the irradiated material is rapidly melted and vaporized,while the high-speed airflow coaxial with the beam blows away the molten material, so as to achieve the workpiece cut,which is also the process of dust and smoke generation.

Causes of cutting smoke

1.laser oxidation cutting:the surface of the metal material can be quickly heated to the ignition temperature under the irradiation of the laser beam. Then the combustion reaction with oxygen occurs, releasing a large amount of heat, forming a small hole inside the material, surrounded by a molten metal wall, these steam and molten material are taken away by the auxiliary air flow, and then floating in the factory floor, forming dust and smoke.

2. Laser vaporization cutting: Under the heating of high power density laser, about 50% of the material vaporizes into steam and disappears, and the remaining material is blown away from the bottom of the slit as a ejecta, and the fine particles in the air combine to form dust.

3. Laser melting cutting: When the incident laser beam power density exceeds a certain value, the material at the irradiation place begins to evaporate, forming holes, and the material around the laser beam is melted. Then, an auxiliary air stream coaxially with the speed of light carries away the surrounding molten material, forming soot.

Harm caused by cutting smoke

The harm of smoke and dust can easily be ignored by the operator. The high temperature generated by the laser acts on the processing materials and produces a large amount of steam and smoke. These smoke often contains a large amount of chemical components, which is also relatively harmful to the human body. In addition, Some gases produced by laser cutting can also harm the human respiratory system.


1.vacuum cleaner

If the laser cutting machine (entry-level model) itself does not have a waste gas treatment device, it is recommended to assemble a set of vacuum equipment above the metal laser cutting equipment, which can effectively absorb the dust, so as to make the workshop more clean and tidy.

2.laser cutting machine

You can buy a large surrounded laser cutting equipment, its own with a smoke discharge system, the appearance is more beautiful, both dust and smoke can be achieved, but also to avoid the damage caused by metal debris splashing in the process.