Why Can Metal Laser Cutting Machines Cut Metal? The Main Reasons Are The Following Points

●High energy density of the laser beam
The beam generated by the laser is highly focused and collimated, so the energy density of the beam in the surface area of the material is very high. This high energy density rapidly heats the surface of the material to the boiling or melting point.

●Low thermal conductivity
Metallic materials have a low heat transfer rate, which makes it difficult to conduct heat away from the laser irradiated area quickly. This facilitates the concentration of a large amount of heat in a small area, causing the material to melt or vaporize quickly.

●Cutting protective gas plays a role
Protective gases (nitrogen, argon, etc.) used in cutting can isolate the heat-gathering area from the outside world and prevent oxidation reactions from occurring, thus promoting the melting and cutting of materials.

●Nozzle blowing away molten material during cutting
The high-speed jet blows away the molten metal so that the laser can continue to irradiate the new surface of the material, keeping the cutting process going.

●Focal Spot and High Peak Power
Focal spots and high peak power allow the laser beam to create a high energy density on the metal surface, promoting rapid vaporization or melting of the material.
Laser cutting machines can utilize highly concentrated laser beams to rapidly cut a wide variety of metal materials. This is the main principle that laser can accomplish metal laser cutting machine.