Combined with the computer, the whole plate can be arranged to save material. During operation, it is only necessary to change the numerical control program to apply the cutting of different shapes of parts, which can perform two-dimensional cutting and three-dimensional cutting. When cutting plastics such as polypropylene, compressed air is been used.
A trace oxide film appears on the cut surface, but it can be used as a measure to prevent the coating layer from falling off. There is a high requirement for the purity of nitrogen (especially stainless steel of 8mm or more, which generally requires 99.999% purity), and the pressure requirement is relatively large, generally about 1.5Mpa. The surface roughness of the workpiece increases when it deviates from the optimal power range. In order to overcome this phenomenon, placed the high sensitivity of the capacitive sensor on the cutting head, to realize the real-time feedback of the distance information between the nozzle and panel to the CNC system. This video displays the welding process of 1.6 mm Aluminum welding with MORN LASER 1500W Laser Welding Machine. This video displays the welding process of 2.0mm Aluminum welding with MORN LASER 1500W Laser Welding Machine.
The properties of the material near the slit are also almost unaffected. And the workpiece deformation is small, the cutting precision is high, the geometry of the slit is good, and the shape of the cross-section of the slit is a regular rectangle. ② The surface of the cutting surface is clean and beautiful, the surface roughness is only a few tens of microns, even laser cutting can be used as the last procedure, no need machining, the parts can be used directly. ① The laser cutting incisions are narrow, and the cutting edges are parallel and perpendicular to the surface.
Install it on the die-cutting machine to cut off a variety of printed graphics boxes. Stainless steel used for decoration, advertisement, service industry or patterns, marking and font of non-metallic materials . Such as the pattern of an art photograph album, Chinese and English fonts of the company, government department, the hotel, the shop sign, the station, the pier, the public place. Cutting torch during laser cutting has no contact with the workpiece and no tool wear. The machining of parts with different shapes does not require replacement of the “cutter”. The laser cutting process has low noise, small vibration and no pollution.
Generally, the required pressure is 0.3-1Mpa, and the flow rate varies according to the thickness of the cutting material. For example, cutting 22mm carbon steel, the flow rate should reach 10m3/h (including the protection oxygen of the double-nozzle). While the oxygen reaction heat is used to increase the cutting efficiency, the resulting oxide film increases the beam spectral absorption factor of the reflective material. Therefore, the higher the air pressure value used, the faster the laser cutting speed can be. It can blow the cutting piece be melted and vaporized, can also blow the smoke in the process of cutting, so as to reduces the barriers to cutting the workpiece. In addition, the NC system can automatically adjust the cutting power according to the cutting speed.
Of course, the oxygen flow rate is not the higher the better, because the fast velocity can lead to the rapid cooling of the metal oxide, which is also detrimental to the cutting quality. Using a laser beam with high energy density to heat the workpiece, the temperature rises rapidly, reaching the boiling point of the material in a very short period of time, and the material begins to vaporize and form vapor. However, when the quality requirements of the cut product are high, aluminum, aluminum alloy, stainless steel, etc. are not suitable for air because the air will oxidize the base material.