green laser pointer can add some mysterious atmosphere to the entertainment place

green laser pointer can add some mysterious atmosphere to the entertainment place
Laser welding process parameters. Power density. The power density is one of the most critical parameters in the laser processing. Higher power density, in the microsecond time range, the surface can be heated to boiling point, resulting in a large number of vaporization. Therefore, high power density for the material removal of machining such as drilling, cutting, carving favorable. Lower power density, the surface temperature reaches the boiling point to go through a few milliseconds, in front of the surface vaporization, the bottom of the melting point, easy to form the molten weld. Therefore, in the conduction laser welding, the power density in the range of 104 ~ 106W/CM2. The equipment has the high ability of processing green laser pointer .
The laser pulse waveform. Laser pulse shape in laser welding is an important issue, especially for thin section welding is more important. When high-intensity laser beam shot to the surface, the metal surface will be 60 ~ 98% of the laser energy reflected is lost, and the reflectivity versus surface temperature. In a laser pulse period, the rate of change of the metal reflector. The laser pulse width. The pulse width is one of the important parameters of the pulsed laser welding, it is both different from the material removal and material melting parameters, the key parameters in determining the cost and volume of processing equipment. Defocus amount of welding quality. Laser welding is usually away from the fuss about because of the high power density of the laser focus at the spot center, easily evaporate into the hole. Leaving the laser focus plane, the power density distribution is relatively uniform. The customer has some strict requirements for the parameter of green laser pointer .
Defocused mode in two ways: positive and negative defocus defocus. Focal plane at the top of the of the workpiece being away from the focus, and vice versa for negative defocus. Geometrical optics theory, when the positive and negative to make a fuss about an equal corresponding power density is approximately the same plane, but actually the weld pool shape.