Advantages of Laser Processing Copper and Aluminum Alloy

For the too thin copper, aluminum alloy material, the thickness of 0.15mm can use galvanometer cutting, the thickness of a little larger cutting head can be used to cut the way.

When the material to be processed is extremely thin, for example, the electrodes used in the lithium industry are suitable for use with lower power pulsed fiber lasers, the galvanometer can be used. The laser emitted by the laser is reflected by two galvanometers, and the F-θ lens is focused and converged on the surface of the material. The peak power of the pulsed laser is extremely high, and the surface of the workpiece absorbs high energy laser. The temperature rises sharply above the boiling point. Some of the material is in the form of steam, and some of the material is sprayed in liquid form. Two motor drive galvanometer deflection, the laser convergence position with the move, the material cut.

Pulsed fiber lasers can effectively eliminate the laser back to the laser caused by the instability of the problem, you can efficiently and steadily on the material processing. Zhengye laser adopts galvanometer to process thin copper / aluminum alloy material, which has the following advantages:

1.Processing speed is high, load is light, can quickly turn, processing complex graphics efficiency is high;

2.Can achieve volume to volume processing, online processing;

3.After processing edge smooth, minimal heat;

4.can be flexible processing, change the cutting style just change the processing graphics;

5.Only consume a small amount of electricity, no other supplies.

Slightly thick copper / aluminum alloy material can be cut head cutting method. The fiber laser is focused by a focusing lens, and a high energy density laser is irradiated on the workpiece. A portion of the light is absorbed and the other part of the light is reflected by the workpiece. The surface of the workpiece absorbs some of the laser energy after the temperature increases sharply, the material melting, gasification, resulting in black hole effect, so that the material absorption rate, more rapid heating of the cutting material, so that more material melting, gasification, Of the gas will melt, gasification of the material blowing away until the material is laser penetration, the formation of perforation. CNC system control laser cutting head and the workpiece to do relative movement, while the laser is still interacting with the material, the workpiece will continue to cut until the workpiece to complete processing.

In the laser irradiation in the workpiece surface has not yet melted material or cutting process, part of the laser will be the workpiece reflection, along the optical path reflected back into the laser, causing the laser power instability, and even lead to laser damage. Resulting in laser cutting interrupt, can not be normal processing.

We have some method to solve this problems.

1.Select the anti-back function with the laser, laser reflection will be laser, the reflected laser will be absorbed, to prevent the laser cavity into the laser, thus protecting the normal work of the laser.

2.Use a special process to prevent the laser from returning to the laser along the optical path.

3.Use special technology to increase the absorption rate of materials to accelerate the laser perforation and laser cutting process.