In the application that in the stiletto to surface of coating of pottery and porcelain and much composite material exercise and the cylinder surface structure that pass in honing have handling waiting for a respect, the use of accurate element laser is close to Nd:Y increasinglyAG laser. Graph 1: Use XeCl laser comes thick to 125 μ M aluminium board undertake stiletto, discovery grows pulse (104 Ns) , power of high peak value (15 KW) below can get best stiletto quality. In material treatment, stiletto exercise is one of laser the earliest application on industry, what use at that time is ruby laser, because they have acerb output character. Current, basically be use pulse Nd:YAG laser will undertake many stiletto works. Laser stiletto serves as a proper technology, the stiletto that basically is used at enraging velar refrigeration aperture works, it is used at gas turbine component to be like bit, blade, firebox is fireproof layer, fill light implement, be like the infuse nozzle of fuel diesel engine with etc component, and the stiletto that waits with the die that squashs at tinsel. Although laser stiletto is very fast, it or need and electric spark processing technique (EDM) competes, because recently, use revolving the technology that hollow electrode and linear motor will come to realize high pressure to offer oil develops, greatly the stiletto rate that raised EDM, the performance that watchs this processing technique from quality so with respect to excel laser stiletto. The respect with laser more advantageous than EDM stiletto depends on laser having dependence to the electrical conductivity of material. However because the quantity of heat of the input is opposite taller, this makes laser beam machining unweller the stiletto that combines element of coating of pottery and porcelain. Pulse laser is used at stiletto to work normally. Its are average power gives by following relation: Graph 2: Below the state with accumulative total certain energy, the efficiency of the pulse of individual 104 Ns wants than the efficiency of the pulse of 12 9 Ns tall. Here: Power of Pp = peak value [width of pulse of KW] Tp = [frequency of pulse of P = of Ms] ν [Hz] is given to average power, have many more boundless the likelihood of width of peak value power, pulse and pulse frequency is combined, at least a kind of combination can give out first-rate machines a result. Very long pulse will bring about peak value power inferior, such material can fuse only when heat and won't by purify. Arteries and veins is wide when short, frequency is low, peak value power will be very high, but, because effect time is very short, only a very weak data can flake because of ablation. In bibliographical reference 1 in the simple method that gave out to search optimal parameter to combine. Graph 3: Use accurate element laser to be in those who have coat of pottery and porcelain to exceed the hole that gets on heat-resisting stainless steel. Use accurate element laser to because mix,undertake stiletto Nd:YAG laser is compared, their wavelengh is shorter (show) like form place, allow molecular laser and Nd:YAG laser is compared, its irradiation is absorbed will weller by the metal. Short wavelengh makes accurate element laser more agree with the hole with dozen of small diameter. Will become to restrict an element in the purify of the material when spile however. The pulse width limits of traditional accurate element laser is in 10 to 20 Ns. Fight each other in width of a pulse in aperture efficiency and the research that quality affects, schoonderbeek2 uses the aluminium with XeCl thick to 125 μ M laser board undertake stiletto, discovery grows pulse (power of 104 Ns) , high peak value (best stiletto quality can get below 15 KW) (the 1) that be like a graph. Below the case that he discovers accumulative total energy is certain at the same time, the efficiency of the pulse of individual 104 Ns wants than the efficiency of the pulse of 12 9 Ns tall (the 2) that be like a graph. Of efficiency differring is because of what heat energy must be conducted from the surface to material interior. Another discovery of this research is, after although be in,laser pulse stops, kong Zhong's material still is met eduction. To 0. The plate Hasteloy X with thick 65mm, of material cleared till 0.
The ability after 1 Ms stops, this grew 100 times than the typical cost of pulse width. On the other hand, pulse width and the traditional Nd:Y that are used at stilettoAG laser appearance is briefer than coming, area of so hot influence will be very small. Density of the power inside same time will be higher. Such, have more stuff will by gas phase is when purify, this was brought about again the ply of casting layer is reduced. All these effect arrive the quality that makes stiletto process is higher. Graph 4: Fall in what carbon fiber composite material makes the diameter on face plate of a confusion of voices is 0.
The aperture of 2mm. Appearance of beam of light needs hit hole, generally speaking its are sectional it is cylindroid, and the primitive beam of light that accurate element laser comes out is rectangle distributings. The aperture that a kind of simple method will come to make a circle is use gobo. Or many lens are used to become in material surface to gobo picture. The defect of this method depends on only energy of one part laser gets using; A lot of circumstances fall to have 30% only or power of fewer beam of light is used. More significant to plastics of beam of light step is to use what offer like Biesheuvel place to use holographic the technology comes the method of focusing beam of light 3, it can achieve the efficiency of 90% . Use holographic the form of beam of light that the technology still can receive differring. Use holographic component bundle implement can dig many hole, still can get annular beam of light will dig the hole with larger diameter. Graph 5: The carbon fiber that uses in aviation application digs installing hole on the makings of complex material. Stiletto application uses laser to be when the exterior stiletto of coating of pottery and porcelain, nd:YAG laser encounters coating to come off the worry of the problem. And accurate element laser, because its pulse width is short, can hitting wear coat while won't happen again come off phenomenon (the 3) that be like a graph. Because wave accident brings about photon energy big, because this follows molecular laser special also agree with the stiletto of a lot of different composite material, for instance, carbon fiber composite material (CFC) . Graph 4 and 5 gave out to be on CFC material the example of stiletto. Graph 4 medium aperture diameters are 0.
2 Mm, it is used at falling face plate of a confusion of voices. Another application is to use the cylinder surface structure that ablation will come to pass to honing to undertake handling, this kind of tribology that improved the appearance via the structure of processing is characteristic, reduced wear away. The stiletto of accurate element laser of high power, limits of its pulse width is in 100-200ns. Using Nd:YAG laser stiletto encounters difficult domain on aperture quality, it drew the attention of all circles. Hot influence area will smaller, through choosing appropriate parameter, again casting layer will be thinner. Be located in Holand Enschede about NCLR NCLR. This company developed Sirius 1000 of accurate element laser, its are average power is 1kW. Get pulse grows (200ns) , make laser very agree with stiletto. Beam of light can be gone to by focusing the facula size of M of 10 μ , the power density that can get so is 10TW/cm2. So high average power makes hit many aperture to become a possibility at the same time. This company is designed and made special holographic cent bundle implement, its optics efficiency is as high as 90% or taller. The equipment of Twente university is used to produce these device. Need more information to visit Www please.
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