As a new type of cutting machine, the laser cutting machine has a more delicate cutting technique. It is used by most industrial companies. The emergence of the laser cutting machine makes some people attracted by its advantages, so many people are confused about the laser cutting machine. What is the difference between a CNC plasma cutting machine and what kind of cutting machine should I choose? In terms of processing accuracy, plasma cutting is rough processing, and laser cutting is fine processing.
The two cutting machines have their own advantages. Of course, it depends on the occasion to use, and the cutting thickness is different. The following introduces the specific differences between the two cutting machines and the fields in which they can be applied:
Fiber laser cutting is the energy released when the laser beam is irradiated on the surface of the workpiece to melt and evaporate the workpiece to achieve the purpose of cutting and engraving. It has high precision, fast cutting, not limited to cutting patterns, automatic layout saves materials, and incisions The characteristics of smoothness and low processing cost will gradually improve or replace the traditional cutting process equipment.
As a new type of tool, laser cutting machine equipment is now more and more maturely used in various industries, including high-precision laser cutting machines, precious metal fiber laser cutting machines, 3D manipulator fiber laser cutting machines, laser spot welding machines, etc. The energy of the laser is concentrated into a high-density beam in the form of light. The beam is transferred to the working surface to generate enough heat to melt the material. In addition, the high-pressure gas coaxial with the beam directly removes the molten metal, thereby achieving the purpose of cutting. It shows that there is a fundamental difference between laser cutting and machine tool machining.
It uses the laser beam emitted from the laser generator to focus into a high-power density laser beam irradiation condition through the optical path system. The laser heat is absorbed by the workpiece material, and the temperature of the workpiece rises sharply. After reaching the boiling point, the material begins to vaporize and form holes, Accompanied by the high-pressure airflow, as the relative position of the beam and the workpiece moves, the material will eventually form a slit. The process parameters (cutting speed, laser power, gas pressure, etc.) and motion trajectory during slitting are controlled by the numerical control system, and the slag at the slit is blown away by a certain pressure of auxiliary gas.
CNC plasma cutting machine is a kind of thermal cutting equipment. Its working principle is to use the heat of high-temperature plasma arc to locally melt the metal at the incision of the workpiece, and use the momentum of the high-speed plasma to remove the molten metal to form an incision.
The development of plasma cutting to the present, the available working gas has a significant impact on the cutting characteristics, cutting quality, and speed of the plasma arc. Commonly used plasma arc working gases are argon, hydrogen, nitrogen, oxygen, air, water vapor, and some mixed gases. Plasma cutting machines are widely used in automobiles, locomotives, pressure vessels, chemical machinery, nuclear industry, general machinery, engineering machinery, steel structures, and other industries.
Laser cutting is to use a high-power density laser beam to scan the surface of the material to heat the material to thousands to tens of thousands of degrees Celsius in a very short time to melt or vaporize the material, and then use high-pressure gas to remove the molten or vaporized material from the slit It is blown away to achieve the purpose of cutting materials. Laser cutting, because the traditional mechanical knife is replaced by an invisible beam, the mechanical part of the laser head has no contact with the work, and will not cause scratches on the work surface during work; laser cutting speed is fast, the cut is smooth and flat, generally not required Subsequent processing; small cutting heat-affected zone, small plate deformation, narrow slit (0.1mm~0.3mm); no mechanical stress, no shearing burr; high processing accuracy, good repeatability, and no damage to the material surface; CNC programming, Any plan can be processed, and large-format whole boards can be cut without opening the mold, which is economical and time-saving.
General remarks: In terms of cutting accuracy, plasma can reach within 1mm, and laser can reach within 0.2mm; in terms of cost, plasma cutting machines are much cheaper than laser cutting machines, and plasma cutting is compared to laser cutting in terms of processing accuracy. One is rough machining and the other is fine machining!