Figure 2b shows the typical geometric characteristics of the laser welded joints

 Figure 2b shows the typical geometric characteristics of the laser welded joints. Figure 2c shows the relationship between the welding power and welding speed and penetration of the welded joints. Observed in the weld area and weld penetration measurement imitation TV 4.5 and is listed as the welding energy of the laser welding parameters to determine. The working principle of the infrared wireless presenter cell phone jammer  is the same as the infrared technology.
In short, Figure 2 shows always maintain intermediate values, different welding heat input heat input and welding speed of the welded joint area with the increase of the welding heat input welding parameters. These values are from 1 to 5.5kJ/cm, while the welding zone cross-sectional area from 0.3 to 12mm2. When the welding energy increases, the weld penetration and weld width and weld zone area. Of course, the weld penetration decrease with the increase of welding speed. Welding parameter variables directly or indirectly affect the welding area (Fig. 2a and c) to be used as a mathematical model or welding designers and welding operators to provide the raw material parameters to optimize the welding process and security design materials solution. The infrared light cannot penetrate the object so that the visible transmission is needed for this kind of cell phone jammer .
(Figure 2d), for all three kinds of steel are obvious from the base metal to the weld heat affected zone and weld microhardness. In addition, in order to estimate the solidification rate of this study the structure of the internal clearance from the dendrites in the literature on measuring the the dendrites gap between the solidification cooling rate relationship. Welding parameters used in this study the theoretical relationship proposed by Grong: For Fe360 steel, you can get the scale factor α = 0.62, HR Steel alpha = 0.22, IF-Ti steel alpha = 0.23. Clearly, in the literature, semi-empirical relationship is also able to determine from the primary dendrites or secondary dendrites, the solidification rate (VR). Taking into account the clearance of primary dendrites λp for C-Mn steel (here mainly refers to Fe360 and HR steel) has the following relationship. And then the remote can not remotely and wirelessly control the machine, including TV, air conditioner, DVD and cell phone jammer .