Principle of laser destroyed the target has two aspects: First, perforation, and second floor split. The so-called hole is a high power density laser beam to the target surface rapidly melting, vaporization and then evaporated, vaporized material out spray, recoil shock wave formation in the target and through a hole. The so-called spallation, laser energy is absorbed by the target surface, the atoms are ionized, in vitro formation of "cloud." "Cloud" outward expansion of the jet to the depths of the formation of stress wave propagation. Once the connection is successful, the indicator light of green pointer led stops flickering.Stress wave reflection caused by target pulled off to form a "spall" damage. In addition, the plasma "cloud" but also ultraviolet radiation or X-rays, destroy target structure and electronic components. The small size of the role of laser weapons, but the key parts of the damage on the target, the target can cause devastating damage.
First, the laser marking 1, laser marking principle: laser marking laser beam is used in a variety of different surface materials marked with permanent marker. Marking effect of evaporation of surface material is exposed through deep material or surface by light leading to the chemical and physical changes, "carved out" signs, or light burned through part of the material, showing the required etching patterns, the text. The battery electric quantity indication is used for indicating the service condition of green laser.Currently, the accepted principles are two: "thermal processing" has a high energy density laser beam (which is the focus of the energy flow), irradiation in the surface to be machined on the surface absorb the laser energy, heat generated in the irradiated area excitation process, so that the material surface (or coating) temperature rise, resulting in abnormal, melting, ablation, evaporation and other phenomena. "Cold" load high energy (UV) photons, can interrupt the material (especially organic material) or the chemical bonds within the surrounding medium, to the occurrence of non-thermal process the material damage. This cold processing laser tag has a special significance, because it is not thermal ablation, but do not have a "thermal damage" side effects, break chemical bonds of the cold strip, and thus be processed in the surface layer and in the vicinity do not produce heat or thermal deformation and so on.The battery electric quantity indication helps to judge if it needs to change the battery of green laser pointer . For example, the electronics industry in the use of excimer laser deposition of chemicals on the substrate film on the semiconductor substrate out of the narrow slot. 2, laser marking features: at any regular or irregular surface marking, and marking the workpiece does not produce stress; in metals, plastics, ceramics, glass, paper, leather or different kinds of materials of different hardness print; 1) non-contact processing 2) materials are suitable for a wide range of 3) other equipment and production line integration, improve the automation of production lines; 4), marking a clear, durable, beautiful, and effective anti-counterfeiting; 5) The long service life , non-polluting; marking speed and mark a shape, energy consumption, and thus low operating cost. 6) Although the low running costs of equipment, laser marking machine marking equipment than the traditional large investment, but in terms of running costs, with much lower laser marking confidential. ① plastic transistor marking: marking machine working speed of 10 / s, if the equipment depreciation, a 5-year period, marking a cost of 0.00048 yuan / month.The laser pointer has a timer.
If you use a printing machine, its comprehensive operating cost is about 0.002 yuan / month, or even higher.
② bearing surface marking: If the bearing trisection typing, a total of 18 4, word, using galvanometer marking machine, krypton lamp to lamp life of 700 hours per, each bearing the cost of marking integrated of 0.00915 yuan.
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