The accessories of hermes

The results shown in Figure 5: respectively, NO2, NO4, NO5 nozzle at different oxygen pressure, the cut surface roughness Rz and function of cutting speed Vc. NO2 can be seen from Figure hole nozzle in Pn as 400Kpa (or 4bar) when the cutting speed can only reach 2.75m/min (carbon steel plate thickness of 2mm). NO4, NO5 two kinds of Laval nozzle in Pn as 500Kpa to 600Kpa when replica birkin can reach 3.5m/min and 5.5m/min. Should be noted that cutting the workpiece and the nozzle pressure Pc is a function of distance. As the oblique shock wave reflection at the air border many times, so cutting pressure cyclical changes. The first high-pressure zone near the cutting nozzle, the nozzle exit surface to a distance of about 0.5 ~ 1.5mm, cutting a large and stable pressure Pc, is the cutting lever commonly used in industrial production process parameters. The second area of high pressure cutting nozzle exit of about 3 ~ 3.5mm, cutting pressure Pc is also large, can also achieve good results, and help protect the lens, to improve their life. Curve on the other high-pressure area due to cutting too far away from the nozzle exit, is difficult to match with the focused beam can not be used. Development history of Hermes Bolide 27 company has been explained very clearly.In summary, CO2 laser cutting technology is China's industrial production has been more and more applications, research and development abroad is higher cutting speed and cutting thicker steel technology and equipment. To meet the industrial production of high quality and increasing production efficiency requirements, must focus on addressing the key technology and implementation of quality standards to make this new technology in China for more widespread application. In the high power density laser beam heating, the surface temperature rose to the boiling point temperature of the speed is so fast enough to avoid melting due to heat conduction, so part of the material vaporized into steam disappeared, some material as ejecta from the bottom of the kerf is auxiliary gas flow blown away. Some can not melt the material, such as wood, carbon materials and some plastics that cut through this vaporization method forming. The accessory of hermes birkin bag replica contains a lot of things.Testing Items of Appearance Inspection of green laser pointerThis type of green laser pointer will bring the great profit to the green laser pointer company. When the nozzle pressure higher, normal flow is oblique shock wave into the shock seal, cutting down pressure Pc, air flow rate reduction, and eddy currents in the workpiece surface, weakening the role of air to remove molten material affect the cutting speed.