At present, many friends have been very familiar with the principle of the laser cutting machine, but there may be a lack of deep understanding of the actual operation and process types. Next, we will analyze this problem with you, hoping to be helpful.
Combined with the current situation, the specific technology of laser cutting can be divided into the following types:
The first is to melt and cut. With this type of laser cutting process, with the increase of the power density of the incident laser beam, when a certain value is reached, the interior of the material at the location of the illuminating point will begin to evaporate and gradually form holes. As long as there is such a small hole, it can quickly absorb a large number of incident beam energy. These holes will then be surrounded by molten metal walls, and then the auxiliary air stream coaxial with the beam will take away the molten material around the hole.
At the same time, due to the movement of the workpiece, these holes will gradually move along the cutting direction of laser cutting, thus forming a slit. At the same time, the laser beam will continue to irradiate along the front of the seam, and the molten material will be blown away continuously or pulsating from the seam.
The second technology is actually vaporized cutting. In other words, in the process of laser cutting, the temperature of the material will be gradually higher, until the temperature of the boiling point is reached to the temperature of the high power density laser beam, and the process is very rapid, so that the melting of heat conduction can be avoided, so that some materials are vaporized into vapour.
In addition, there is another technology called controlled fracture cutting. This process is usually applied to brittle materials which are easy to be damaged after being heated. In the process of laser cutting, the laser beam is heated to cut off high speed and controllable, that is, to control fracture cutting. The laser beam used in this process can guide the crack in any direction needed.
标签:   钣金加工 钣金 加工