First, the laser cuts principal characteristic: 1st, the laser cuts kerf narrow, the working strain is small. The laser beam focuses Cheng Henxiao the luminous spot, enables the focal point place to achieve the very high power density. By now the light beam input quantity of heat went far beyond by the material reflection, the conduction or the proliferation part, the material very quickly heats up to the intensified degree, evaporated forms the hole. Along with the light beam and the material relative linearity migration, causes the hole to form the width very narrow kerf continuously. The cutting edge being heated influence is very small, basically does not have the work piece distortion.

　　Cuts in the process also to increase with is cut the auxiliary steam body which the material suits. The steel cuts when with fuses the metal using the oxygen as the assistance steam body to produce the exothermic chemical reaction oxidation material, at the same time helps in the kerf the slag. Cuts polypropylene pseudoplastic use compressed air, the cotton and kapok, the paper and so on the combustible material cuts the use inert steam body. Enters the spray nozzle the auxiliary steam body also to be able to cool the focusing lens, prevented the mist and dust enters in the lens place to pollute the lens and to cause the lens heat.

　　Majority is organic and the inorganic material all may use the laser to cut. Holds the component very heavy metal processing industry in the industry manufacture system, many metals materials, no matter it is any type degree of hardness, all may carry on does not have the distortion to cut. Certainly, to the high index of reflection material, like the gold, the silver, the copper and the aluminum alloy, they also is the good heat transfer conductor, therefore the laser cuts very difficultly, even cannot cut.

　　The laser cuts the burr-free, the corrugation, the precision is high, surpasses the plasma to cut. Said to many mechanical and electrical manufactures professions, because the microcomputer procedure control modern laser cuts the system to be able to facilitate cuts the different shape and the size work, it compared to the die cutting, the mould pressing craft first is often selected; Although it processes the speed also slowly in to stamp, but it does not have the mold consumption, does not need to repair the mold, but also saves the replacement mold time, thus has saved the processing charge, reduced the production cost, therefore from the overall the consideration is the representative office.

　　Another one?How from causes the mold to adapt the work piece design size and the shape change angle looked that, the laser cuts also may display its is precise, reappears the natural good superiority. Folds the mold as the level the first manufacture method, because does not need the senior mold system to do work, comes the attachment advantage is the mold can produce a shallow hardened level (heat-affected zone), enhances in the mold movement the resistance to wear. The laser cuts does not have the contact characteristic to cut the forming to the circular saw blade to bring does not have the stress superiority, because enhanced the saw blade service life.

　　2nd, the laser cuts is one kind of high energy, the density controllability good does not have the contact processing.

　　After the laser beam focusing forms has the greatly strengthened energy the very small action point, applies it in cutting has many characteristics. First, the laser energy of light transforms the astonishing heat energy to maintain in the minimum region, may provide (1) the slender straight edge kerf; (2) smallest neighbor cutting edge heat-affected zone; (3) minimum local distortion. Next, the laser beam does not exert any strength to the work, it is does not have the contact to cut the tool, this meant (1) works does not have the machinery distortion; (2) does not have the cutting tool to wear, also is far from the cutting tool the transformation question; (3) cuts the material not to need to consider its degree of hardness, also is the laser cuts the ability not to cut the material degree of hardness influence, any degree of hardness material all may cut. Once more, laser beam controllability, and has the high compatibility and the flexibility, thus (1) unifies with the automatic equipment very conveniently, is easy to realize cuts the process automation; (2) because does not exist to cuts the work the limit, the laser beam has the infinite profiling ability; (3) with computer union, but the whole piece board dump, saves the material.

　　3rd, the laser cuts has the widespread compatibility and the flexibility. Compares with other convention processing methods, the laser cuts has a bigger compatibility. First, cuts the method with other heat to compare, the similar achievement hotly cuts the process, other method cannot like the laser beam such function in a minimum region, finally causes to cut the orifice width, the heat-affected zone big and the obvious working strain. The laser can cut nonmetallic, but other heat cut the side principle not to be able.

　　(1) the oxygen - inflammable body (for example acetylene) cuts. This method mainly uses in cutting the low-carbon steel, because it hotly inputs affects in a big way, cuts the speed to be low, is short very much is used for to cut below 20mm to request the size precise material.

　　(2) the plasma cuts. Cuts the speed obviously quickly in autogenous fusing, but cuts the quality to miss, the cutting edge crown assumes the round capitate, the cutting edge is obvious the wave shape, but also must prevent the electric arc produces ultraviolet ray radiation. It surpasses the laser to cut slightly place lies in suitablly cuts compares the steel plate and to the light beam index of reflection high aluminum alloy and so on.

　　(3) stamps. The mass productions components with stamp the method cost lowly, the production cycle is short. But it to designs on the change compatibility very badly, the new mold needs the long time design, the construction cost is high, to the center, the small scale production said, the laser cuts the characteristic can fully demonstrate. Moreover, the laser program control cuts is advantageous for the work piece close arrangement, saves the material, but stamps then needs periphery each work to reserve the material.

　　(4) complex components partition die cutting. In the ordinary circumstances, the punch press wants the die cutting frequently compared to mold size greatly very many work pieces, some work very is also complex, this causes the cutting edge to assume many small conchoidals cutting edges, needs the second preparation processing renovation. Moreover the drift can form compared to the laser cuts in width very many margins, produces the massive iron filings.

　　(5) the saw cuts. Cuts the metal, its speed obviously cuts compared to the laser slowly, moreover the laser took nimble does not have the contact, the profiling tool, may any start from the material to cut cuts to any direction. This point, the saw cuts is achieves with difficulty.

　　(6) electrical finishing. General, advantageously uses electricity the corrosion or the fuse effect electric spark and the electrochemistry processes two methods, uses in the hard material fine processing, margin roughness good, but cuts the speed to have to cut speed to be slower than several magnitudes the laser.

　　(7) the water cuts. May cut many metals materials, but the expense is high.