Some craft elaborate laser cutting machine

In modern enterprises, laser cutting machines are generally used, and many people still don’t have a detailed understanding of this emerging mechanical equipment. Let’s briefly talk about it. For ordinary laser cutting machines, the process There are different requirements in the laser cutting process. For example, the laser cutting machine process has many different requirements.

1. Controlled fracture cutting

For brittle materials that are easily damaged by heat, high-speed, controlled cutting by laser beam heating is called controlled fracture cutting. The main content of the cutting process is that the laser beam heats a small area of u200bu200bthe brittle material, resulting in a large thermal gradient and severe mechanical deformation in this area, leading to the formation of cracks in the material. As long as a balanced heating gradient is maintained, the laser beam can guide cracks to occur in any desired direction.

2. Oxidative melting cutting

Melting and cutting usually use inert gas. If it is replaced by oxygen or other reactive gas, the material is ignited under the irradiation of the laser beam, and the strong chemical reaction with oxygen produces another heat source called oxidative melting and cutting.

3. Melting and cutting

When the power density of the incident laser beam exceeds a certain value, the material at the point where the beam is irradiated evaporates to form a hole. Once such a small hole is formed, it will absorb all the incident beam energy as a black body. The hole is surrounded by molten metal walls, and then the auxiliary airflow coaxial with the beam takes away the molten material surrounding the hole. As the workpiece moves, the hole synchronously traverses in the cutting direction to form a slit. The laser beam continues to irradiate along the leading edge of the slit, and the molten material is continuously or pulsatingly blown away from the slit.

4. Vaporized cutting

Under the heating of high power density laser beam, the surface temperature of the material rises rapidly to the boiling point temperature, avoiding the melting caused by heat conduction, so some materials evaporate Some material is ejected from the bottom of the slit into steam. Blow away the auxiliary airflow.

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