The color of cell phone jammer can be customized

The color of cell phone jammer can be customized
The cell phone jammer with memory function can be easily used. The main characteristics of heat welding laser beam power density, a large part of the light reflected by the metal surface, the light absorption rate, weld penetration depth, is mainly used for welding slow thin (thickness <1mm), small parts of welding process. When the laser spot on the power density is large enough (≥ 106W/cm2), the metal in the laser irradiation is rapidly heated, its surface temperature in a very short period of time (10-8 ~ 10-6s) rises to the boiling point the metal melting and vaporization. When the metal vaporization, the metal vapor produced by a certain speed to leave the pool, metal vapor escape of molten liquid metal generates an additional pressure (for example, aluminum, p ≈ 11MPa; for steel, p ≈ 5MPa), sunken bath down the metal surface, the laser spot to produce a small pit under the [Figure 1 (b)]. When the beam at the bottom of the hole to continue heating the gasification, the resulting pressure of metal vapor on the one hand the Bottom of the liquid metal to further deepen the pits, on the other hand, flying out to the pit outside the steam bath of molten metal pressed against four weeks. Price of cell phone jammer will be greatly different sometimes.
This process continues, then the liquid metal to form an elongated hole. When the beam energy produced by the recoil pressure of metal vapor and liquid metal surface tension and gravity balance, the hole will not continue to deepen, to form a stable depth of the holes and welding, so called deep penetration laser [Fig. 1 (b)]. If the laser power is large enough and the material is relatively thin, laser-welded to form throughout the entire thickness of the hole and back to receive part of the laser, this welding method can also be called hole effect of laser welding sheet metal. From the mechanism point of view, deep penetration and holes are the effects of welding on the premise that there are holes in the welding process, there is no essential difference between the two. In the energy balance and material flow balance conditions, the hole can be generated when the number of stable analysis of the phenomenon. As long as there is sufficiently high beam power density, small holes can always be formed. Holes filled with welded metal in a continuous laser beam generated by irradiation of the metal vapor and plasma (Figure 2). This has a certain pressure to the surface of the plasma space also erupted in the small hole on top to form a range of plasma cloud. The market price of cell phone jammer is always changing.