Views: 0 Author: Site Editor Publish Time: 2022-06-19 Origin: Site
As an important technology in the field of laser processing, laser cutting technology is a very good way to intuitively assess the performance of laser cutting equipment by assessing the quality of laser cutting machines. There is no uniform standard, but in terms of the popularity of laser cutting machines, it is still good.
What are the main components of laser cutting machine?
How can we use the laser cutting machine to cut aluminum?
What aspects should be considered when choosing a laser cutting machine?
During the cutting process of the laser cutting machine, the beam is focused into a small focus by the lens of the cutting head, so that a high power density can be achieved at the focus, and the cutting head is fixed on the z-axis. At this time, the heat input by the beam far exceeds the part of the heat reflected, conducted or diffused by the material, and the material is quickly heated to the melting and vaporizing temperature. Each high-energy laser pulse instantly sputters a small hole on the surface of the object. Under the control of the computer, the laser processing head and the material to be processed perform continuous relative motion and dot according to the pre-drawn pattern, so that the object will be processed into desired shape.
At the same time, a high-speed airflow blows the melted and vaporized material from the coaxial or non-coaxial side, forming holes for material cutting. With the relative movement of the focus and the material, the hole forms a continuous slit with a narrow width to complete the cutting of the material.
Despite its high reflectivity and thermal conductivity, aluminium can be cut up to a thickness of 6mm depending on the alloy type and laser capability. When cutting with oxygen, the cutting surface is rough and hard. With nitrogen, the cutting surface is smooth. Pure aluminum is very difficult to cut due to its high purity and can only be cut if a "reflection absorption" device is installed on the system. Otherwise, the optical components will be destroyed by reflections from the laser cutter.
1. If the subsequent appearance of the aluminum material is not considered, the surface of the aluminum material can be painted black, which can effectively reduce the reflectivity of the aluminum material to the laser, so that the aluminum material can be cut more easily.
2. If the economy allows, a larger laser cutting machine can be replaced. The reflectivity of common aluminum materials to light is usually about 70%. 3000W power can cut aluminum within 8mm, and 6000W power can cut aluminum within 16mm. . Select a larger laser power according to the thickness to be cut, which can cut aluminum better.
3. The aluminum material can be better cut by adjusting the cutting process. The aluminum material itself is not resistant to high temperature. Once the cutting dwell time is improper, burrs will occur. By adjusting parameters such as cutting focus, speed, output power, and air pressure, the laser cutting machine can cut aluminum better.
4. Select the appropriate auxiliary gas, because of the special color of aluminum and to ensure the uniform color of the cut product, nitrogen can well prevent oxidation and retain the characteristics of the material itself. Nitrogen is a better choice.
When buying a laser cutting machine, there are many factors to consider. In addition to taking into account the maximum size, the material, the maximum thickness to be cut and the size of the raw material of the currently processed workpiece, more attention must be paid to the future direction of development, such as the size of the product. The size of the largest workpiece to be machined after the technical modification, the format of the material provided by the steel market that is most economical for its own product, the loading and unloading time, etc.
Due to the continuous development of the technology, the laser cutting machine is constantly updated to meet the high requirements of various fields. We have professional staff who can offer you personalized, customized services. If you are interested in this product and want more information, please contact Wuhan EETO Laser Equipment Co., Ltd.
