The ordinary green laser pointer can be used in the party occasion

The ordinary green laser pointer can be used in the party occasion.
Need to choose a different welding speed for different laser power 7 Fc and Fv, and Fm, respectively, redoubling the wall in Figure 2-2 of the melting point, boiling point and critical laser power density laser principle and application of density to reach the requirements of the melting depth. Laser deep penetration welding of laser output power is also closely related to the power and function of the spot diameter. Different materials have a critical power density threshold laser power density exceeds this threshold, in order to form the holes get deep penetration welding. Appropriate to reduce the welding speed can increase the penetration, but the welding speed is too low penetration but does not increase, but to make melt width increases. green laser pointer can be adopted in the concert field and disco.
For a given laser power conditions, the existence of a minimum welding speed to maintain the penetration welding. Figure 2 - 3 laser beam mode laser welding of the beam pattern to determine the energy distribution of the focus focus, have an important impact on the deep penetration. Shown in Figure 2-38, the laser beam for the fundamental mode, you can get the maximum weld depth and aspect ratio, the order of the beam pattern, the higher laser beam energy distribution is more scattered, poor welding quality. With different beam focusing the beam of the characteristic parameters Kf laser welding quality. Shown in Figure 2-4, the larger the beam Kf values, the worse the quality, the weld depth and width than the smaller. green laser pointer can be utilized in camping.
Figure 2-3,2-4 Wang Jian, Liu Yulin of CO_2 laser deep penetration weld influencing factors 8 4 11 Figure 2 - 4 beam Kf value of laser deep penetration depth and width of 2.4 2.4.1 The thermal conductivity of the welding quality of process parameters 9 pulse waveform of the welding quality affect the 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. green laser pointer is a good tool in some other locations.
Figure 2 - 5 pulse period, the relative reflectivity of the material over time curve in this section refer to Cheng Long pairs, Feng Wei "laser welding processing parameters" Figure 2-5 for a laser pulse period , the relative reflectivity of the material versus time curve (curve 1 and 2, respectively, for changes in the reflectivity of the copper and steel).