Laser mark cuts visit close
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- source:MOMEYER CNC Machining
002 inches of above, go up each when must shoot mark reticle with many laser pulse a little bit, ability achieves needs treatment deepness. For this, must lower the advancing rate that surges beam of light. If need to undertake low bid is engraved, can increase floating rate, and even the maximum that reachs a system. Right now, value of pulse frequency set will appear corresponding thermal diffusion sex, final bid engraves the effect to cannot achieve beautiful requirement possibly. General applied regulation is, laser pulse should have the jackknife rate of 50% at least, just be met form a successive mark reticle by treatment surface. By Telesis Technologies company (network address: Www.
Telesis.
The Express10EV laser system that Com) place develops (see figure above) , the fine writing of high resolution can be carved on tall reflex silicon chip. Material element neodymium - all sorts of laser of yttric aluminous garnet can be compatible stimulating cursor cuts material. The characteristic meeting of certain material affects mark to cut the result of treatment, these character include the reflectivity, color that absorbs characteristic, thermal conductivity, workpiece and appearance bright and clean degree. Laser must be absorbed, ability produces quantity of heat. If be opposite by the material of treatment,laser has very strong reflection sex, increase the power of laser with respect to need, reduce pulse frequency, gain higher peak value power thereby. Additional, return the rate that can lower beam of light to move. To glancing sexual material, the likelihood cannot undertake mark cuts treatment at all. Most metallic stuff can absorb neodymium - laser of yttric aluminous garnet, its wavelengh is 1.
06 millimeter, undertake mark cuts treatment very easily consequently. Reflection sex of gold is very strong, need consequently more the laser of high-power. Some organic material (for instance lumber is mixed paper) , almost can 100% reflex lines, accordingly cannot mark is engraved. The sort of laser is sealed model carbon dioxide laser: Use the surface to become angry means, mark cuts cost inferior. Apply to lacquer of plastic, coating, printing ink, pottery and porcelain and other metalloid material. Laser of Stab carbon dioxide: Apply to the deep-seated nap of metalloid material surface. Neodymium of diode pump riverside - laser of solid of yttric aluminous garnet (DPSS) : Quality of beam of light is high, pulse stability is good. The deepness that applies to petty word appears vulture. Neodymium of pulse mix into - laser of yttric aluminous garnet: Power of very high peak value pulse, usable at deepness mark is engraved and wide cut mark is engraved. Neodymium of 3 times frequency - laser of yttric aluminous garnet: Belong to ultraviolet wave band, what can produce small carve place to need is the narrowest the line is broad; Have the optimum wavelengh that place of a variety of special type stuff need. Duple frequency neodymium - laser of yttric aluminous garnet: Belong to wave band of green visible light, apply to the small character sculpture with wide filament; Most apply to a variety of gold, synthesis material and plastic. Q switch neodymium - laser of yttric aluminous garnet: Peak value power is high, pulse width is narrow, apply to deepness to appear vulture / sculpture. Most apply to most metal material and a lot of metalloid material. If be put in the problem of reflectivity, the label that uses place of duple frequency laser to obtain cuts the result betterer. The wavelengh of this kind of laser is 532 accept rice, belong to green visible light. Use wavelengh for 10.
6 micron (the area outside Yuan Gong) mark of carbon dioxide laser engraves a system, also can get satisfactory result. The absorptivity of all sorts of material follows temperature and produce change. Because stimulate cursor to cut a course the exterior temperature of can elevatory material, consequently absorptivity submits the data that increases significantly, cannot undertake mark cuts treatment possibly. Say for example, some are plastic have steeper absorptivity - temperature curve, consequently almost unavailable beautiful mark cuts the result. Stimulate firm illuminate of beam of light to arrive on these material, exterior temperature and absorptivity of quantity of heat rose quickly. Worse is, because these material drew much energy, temperature lifts quickly, rise what cause absorptivity of quantity of heat consequently further. Need a short while time of millisecond class only, these material produced aerification to evaporate. If reduce the power of laser, try compensation and control treatment process, make quantity of heat cannot be absorbed adequately likely, realize the control of pair of initiative temperature rise, plastic won't produce marked change to the illuminate of laser. If the problem becomes severe, the neodymium that can choose duple frequency - laser of yttric aluminous garnet or carbon dioxide laser, in order to obtain more easily pilot absorptivity - temperature curve. The data with strong thermal conductivity is not entirely to cannot undertake laser mark engrave, the difficulty that just achieves requirement result is a few greater. Must the parameter of appropriate adjustment laser, in order to compensate material oneself " medicinal powder hot " problem. CNC Milling