Wednesday, May 23, 2012

Let’s get to know something about the identity of green laser pointer

As the laser processing is non-contact machining, tool and the workpiece surface is not observed directly generate resistance to wear, so fast laser processing, processing of objects and small heat affected area will not produce noise. As the laser beam energy and beam speed can be adjusted so the laser processing can be applied to different levels and scope. Currently, the accepted principle of laser processing are two: namely laser thermal processing and photochemical processing (also known as cold). Laser thermal processing means that when the laser beam to the surface, causing rapid heating, thermal properties of the object changes or the material melting evaporation.The receiver of  led flash light  has no capacity even it looks like a USB drive. Thermal processing of high energy density laser beam (which is to focus on the energy flow), irradiation in the surface to be machined on the surface absorb the laser energy, heat generated in the irradiated region to stimulate the process, so that surface (or coating ) temperature rise, resulting in abnormal, melting, ablation, evaporation and other phenomena. Photochemical processing means that when the laser beam is added to an object, high-density energy photon trigger or control the processing of photochemical reactions. Cold with a high load energy (UV) photons to break material (especially organic material) or the chemical bonds within the surrounding medium, to make the material non-thermal process damage occurred.Let’s talk about something about the working theory of  green laser pointer . 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. 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. Third edition of the key technologies of laser cutting laser processing technology is widely used in laser cutting of metal and non-metallic materials, processing, can significantly reduce processing time, reduce processing costs, improve quality of the workpiece. Laser cutting is laser focused by the generation of high power density energy to achieve.Let’s get to know something about the identity of  green laser pointer . With the traditional plate processing methods, laser cutting of its high quality cutting, high cutting speed, high flexibility (free to cut any shape), a wide range of materials, adaptability and so on. Laser welding Laser welding laser materials processing technology of the important aspects of the welding process is a thermal conductivity type, that is, laser radiation heating surface, the surface of the heat through the heat transfer-based internal diffusion, by controlling the laser pulse width, energy, peak power and repetition frequency and other parameters, so that the workpiece melt to form a specific pool. Because of its unique advantages, have been successfully applied to micro, small parts welding. Compared with other welding, laser welding of the main advantages are: laser welding speed, depth, and deformation. At room temperature or under special conditions for welding, welding equipment installation simple. Do you know any application of  green laser pointer ?Laser drilling with portable electronic products towards, the direction of miniaturization, miniaturization of the circuit board raised higher and higher demand, improve the level of a small circuit board that is more critical and different levels of narrow linewidth line between the smaller micro-vias and blind holes. Traditional mechanical drilling the smallest size of only 100? M, which obviously does not meet the requirements, on behalf of and is taken from a new type of laser micro-vias processing methods.

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