One, the major attribute of Laser Cutting 1, of Laser Cutting cut seam narrow, workpiece is out of shape small. Stimulate focusing of beam of light to become very small spot, make focal place achieves very high power density. At this moment the quantity of heat that beam of light inputs exceeds far by the material reflex, part that conduct or diffuses, material heats very quickly to vaporization degree, evaporate form hole. As beam of light and material opposite linear moves, make hole forms width continuously very narrow cut seam. Impact of the be heated that cut a margin is very little, be out of shape basically without workpiece. The auxiliary steam system that suits with phase of the data that be cut still is added in cut process. Oxygen is used to regard auxiliary steam system and melt metal generation as material of oxidation of radiative and chemical reaction when steel cut, at the same time the help blows kerf inside slaggy. Cut polypropylene a kind plastic use compress air, the combustible material cut such as cotton, paper uses inert steam system. The auxiliary steam system that enters spray head returns lens of can cooling focusing, prevent soot to enter lens of the pollution inside lens mount to bring about lens overheat. Most organic can use Laser Cutting with inorganic material. In industry production system has the metal with very heavy deal to process trade, a lot of metal stuff, no matter it is what kind of hardness, can undertake notting have is out of shape cut. Of course, to tall reflectivity material, be like gold, silver-colored, copper and aluminium alloy, they also are good pass heat conductor, laser Cutting is very accordingly difficult, even cannot cut. Laser Cutting does not have burr, fold, precision tall, excel Plasma Cutting. Make a trade to a lot of Electromechanical for, because the system of contemporary Laser Cutting of personal computer programme controll can be convenient cut is different the workpiece of appearance and dimension, it often is cut than rushing, mould pressing craft more by preferential choose; Although it machines speed to rush slow still at the model, but it is used up without the mould, need not repair a mould, managing still change mould time, saved treatment cost thereby, reduced manufacturing cost, so from considering on the whole is more economical. 2, Laser Cutting is a kind of high-energy quantity, density it is good to can charge a sex machine without the contact. Those who have extremely strong energy is form after stimulating focusing of beam of light point of very little effect, apply it at cut to have a lot of characteristics. Above all, changeover of laser light energy holds the section in minimum into breathtaking heat energy inside, can offer (1) the straight edge kerf of narrow; (2) the heat that the smallest vicinity cuts a margin affects an area; (3) dinky local be out of shape. Next, stimulate beam of light not to bring to bear on to workpiece any force, it is not to have osculatory cut tool, this is meant (1) workpiece is out of shape without machinery; (2) wear away without cutting tool, also do not talk to go up the changeover problem of cutting tool; (3) the hardness that cut material need not consider it, also namely the hardness effect that Laser Cutting ability does not get the data that be cut, the material of any hardness is OK cut. Again, stimulate beam of light to be able to charge a sex strong, have tall adaptability and flexible, consequently (1) very as convenient as union of automation equipment photograph, implement cut process automation easily; (2) as a result of nonexistent the limitation to cut workpiece, stimulate beam of light to have infinite shape cutting capacity; (3) be united in wedlock with the computer, can make piece of board platoon material, save stuff. 3, Laser Cutting has extensive adaptability and flexibility. Machine methodological photograph to compare with other convention, laser Cutting has bigger adaptability. Above all, compare with photograph of method of other hot cut, regard hot cut as the process likewise, other method cannot resemble laser bundle in that way action the area at a minimum, the result causes rift area of wide, hot influence is mixed greatly apparent workpiece is out of shape. Wash light energy cut metalloid, and other cuts square law eagerly cannot. 2, the main craft of Laser Cutting 1, vaporization cut. Heat in what high power density stimulates beam of light below, it is such that material surface temperature raises the rate to boiling point temperature fast, enough avoids heat to conduct those who cause is fused, then partial data vaporization disappears into vapour, partial data serves as eructation from cut seam bottom to be flowed to be blown by auxiliary gas. 2, fused cut. After stimulating density of power of beam of light incidently to exceed some to be worth, dot of illuminate of beam of light is in material interior to open Mom to evaporate, form hole. Once this kind of alveolus is formed, it will draw energy of all incident beam of light as boldface. Alveolus is fused metallic wall place is surrounded, next, as coaxial as beam of light auxiliary air current takes away the melt material all round hole. Move as workpiece, alveolus forms to cut by sideslip of cut direction synchronism seam. Stimulate the forward position illuminate that beam of light continues to be seamed along this, fused material lasts or pulsatile from seam inside be blown. 3, oxidation is fused cut. Fused cut uses inert gase commonly, if take the place of with oxygen or other active gas, material is ignited below the illuminate that stimulates beam of light, with aerobic happening intense chemistry reacts and generate another heat source, call oxidation fused cut. 4, control ruptures cut. To the brittleness data that easy be heated destroys, have high speed through stimulating beam of light to heat, can accuse cut off, call control to rupture cut. Process of this kind of cut is main content is: Stimulate beam of light to add hot-short material is little section, cause the hot gradient with this large area and serious machinery to be out of shape, bring about material to form break. Want those who keep balanced to heat only gradient, stimulate beam of light to be able to guide break to arise in the direction of any need. 3, the Laser Cutting of stuff of the Laser Cutting 1 of material of commonly used project, metal. Although almost all metallic stuff have very tall reflectivity to infra-red wave energy in room temperature, but launch the wave band outside be in Yuan Gong 10. The CO2 laser of 6um beam of light or the successful Laser Cutting that apply at a lot of metals are carried out. The metal is right 10.
6um stimulates the initiative absorptivity of beam of light to have 0 only.
5%~10% , but, the focusing that should have power density to exceed 106w/cm2 stimulates illuminate of beam of light to arrive when metallic surface, can make the surface begins to fuse very quickly inside the time of small second class however. The absorptivity of the most metal that is in melt condition rises quickly, can raise 60%~80% commonly. 2, the Laser Cutting of metalloid material. 10.
The CO2 of 6um wavelengh stimulates beam of light to be absorbed very easily by metalloid material, thermal conductivity is bad to mix evaporate lowly the beam of light that temperature makes absorb again is almost whole input data is inside, be in instantaneous vaporization in facula illuminate, form initiative hole, enter the benign loop of cut process. CNC Milling