Capture with laser light beam difficult treatment material

Glass, sapphirine and pottery and porcelain are to apply generally at small processing technique and the data that process subtly. However, they brought more and more challenges to traditional workmanship, this kind of challenge also gives exceeded short pulse laser formidably to gain more opportunity. The attribute with high grade material is indispensable to a lot of products: Glass uses the indication screen of the smartphone that make, indication screen is having the case of steel; Pottery and porcelain is hard, chemistry is stable, can use component of the electron that make and circuit substrate and electric dielectric. Sapphirine is extremely hard, be able to bear or endure cut, suit to be used at semiconductor and LED technology. But glass, pottery and porcelain and sapphirine have be nodded jointly even if machine very hard. Because they are brittle and it is adamant material, they are challenging mill, auger, grind the limit that waits for traditional workmanship. The cutting tool when processing these data wears away fast, and need many treatment link just can get enough good treatment quality. Laser light beam can show a favorable result particularly in hard, brittle material. They won't wear away and can focusing arrives the smallest diameter. Scanning Zhen Jingneng locates neatly beam of light, the treatment that can satisfy all sorts of appearance outline almost needs. Exceed short pulse laser (graph 1) suit to process brittle data particularly. To be less than the laser pulse of 10ps, before heat conducts circumjacent material to go up, the material of region of the work area that be added already vaporization. Want laser to parameter is adjusted accurately and match with application only, so do not need do poorly done work over again. Graph 1 exceed TruMicro 5000 of laser of second of short pulse skin to be opposite visible light and close for the light inside infra-red spectral limits, a lot of resemble glass such broadband is unoccupied place dielectric is pervious to light. However, the leather second pulse of high strenth can pass much photon ionization to produce free electron. A large number of successive ionization release charge carrier further, these charge carrier can destroy the chemical bond in material, achieve the goal of ablation material finally. When processing brittle data, avoiding to produce small break is the challenge that often should encounter, these small interstitial conferences weaken the intensity of component. Producing an interstitial account is exceeding quantity of heat entered component. Quantity of heat brings about material to expand, accelerated break generate. Machine what strategy can avoid small flaw appropriately to form. This includes essence of life to define treatment parameter definitely among them, if jackknife of pulse energy, pulse is spent, repeat diameter of frequency, focus and time of laser beam machining. Optimal work place depends on the material, requirement that machines appearance, handling time and quality, try to affirm through come true experiment. The Trumpf company that is located in German south Ditizingen and Germany western the institute of Fraunhofer laser technology of Aachen begins associated research, laid the theoretical foundation that optimizes effect of material of brittleness of laser beam machining. Different level is usable will assess quality: The flexural strength of component (rupture with what will measure material intensity, interstitial meeting makes rupture intensity is reduced) , cut brim surface roughness and brim vision effect. The circumstance of cut brim can pass optical microscope and electron microscope of scanning of have the aid of to measure. The common method that measures component flexural strength is to folded curved test at 4 o'clock. With two cylinder sample undertakes the experiment to machining outline certainly prop up and locate. Additionally two cylinder are opposite with fixed rate appearance ceaseless thrust augmentation, be broken off till it. The pressure that destroys time place gets metrical accordingly, rupture the form that intensity can adopt component is unit computation to reach with million handkerchief. Of the smartphone arisen and outstanding the importance of indication screen. Intelligent feeling shows screen had surmounted mobile phone clavier to become the mainest user interface. Typical smartphone includes 4 glass tablet: Two go up in indication screen, contain filmy transistor and liquid crystal material; Provide feeling function together; Still cover board of a chemical toughened glass protects ground floor to avoid at injury of cut, concussion and dirty content. Because the user wants the smartphone with light, small a rope for towing a boat, smaller vitreous face plate is used. Typical glass shows face plate is 0.

3mm; Cover board of chemical toughened glass is 0.

7mm. This makes conventional cut technology reached the limit. Cutting wheel has not suited to machine this kind of glass, because they pass special chemical aggrandizement processing, and milling treatment needs many and abrade the do poorly done work over again that goes up with polishing works. The exceeds as it happens of short pulse laser to be able to be used at this kind of material treatment of wavelengh of infra-red He Luguang. Leather second pulse can reduce interstitial generation, cut quality exceeds common milling treatment far. Laser light beam has swept cut of implementation be cominged to by treatment material for many times. Speed, the angle of brim quality and brim can be decided by treatment strategy. Opposite at other laser technology, ablation craft is more reliable. For example, slight metabolic glass does not affect treatment result. In the test, use laser of second of green smooth skin, "Corning Eagle XG " flexural strength amounts to 280MPa. The test that uses laser of infra-red skin second shows rate increases 3 times as a result, the flexural strength of the brim slightly low. The efficiency that more powerful leather second laser provided more opportunities to raise treatment glass (graph 2) . As a result of the reason of plasma screen, the ablation efficiency of rolled steel begins to reduce when the pulse energy density of 5J/cm2, and glass allows higher pulse energy density, till treatment efficiency is achieved highest. When should machining glass accordingly, higher pulse energy is OK the ablation efficiency with taller translate into. Graph sapphirine of glass of treatment of laser of second of 2 use skins is the 2nd hard data that diamond is next to on the earth, the method that uses machine very hard will machine. Use laser comes the standard that cut sapphirine is current LED manufacturing industry machines a method, sapphirine uses as here substrate underlay. Because its resist cut,the gender is mixed pervious to light quality, sapphirine can produce the protective lens range of watch and telescope with a future life. When machining petty outline, exceed short pulse laser to be able to realize the treatment with standard essence. Mix when cut circle component for example when drilling small hole, flexible outline treatment can come true through high speed scanner. Exceed short pulse eliminate the hot influence when treatment, produce wonderful cut brim quality thereby. Laser of infra-red skin second cuts use TruMicro 5070 to come down from the cut on sapphirine. Dimension of the least rough sketch is 0.

2mm. With the intelligence that exceeds union of short pulse photograph treatment means can avoid to form breach and craze. The pulse energy that experience makes clear to 100 μ J is controlled is first-rate. For example, the independent laser light beam that the laser light beam that is pulse energy 250 μ J divides into J of two 125 μ machines two component to be able to obtain higher yield at the same time. Outstanding treatment quality depends on treatment method, remove dust and between workpiece clamping apparatus cooperate aptly. Project pottery and porcelain is via often can be being used at exposing on the component of high temperature or requirement wear-resisting caustic. In a lot of application, very tall to the insulating property requirement of material. For example, project pottery and porcelain is used at the PCB material of chip of the sensor in automobile industry, use at the data of wear-resisting caustic reserve of oil pump, or material of the nozzle in be being used at food industry. Laser suits to be on thin pottery and porcelain very much bore, cut or structural processing. For example, use infra-red it is OK to exceed short pulse laser in order to be as high as the rate cut of 10mm/s 0.

The zirconia of 3mm board. Exceed short pulse to be able to produce a life to slip, flawless cut brim. In view of the focusing character that exceeds short pulse to arouse Guang Rui interest, they special apply to stiletto: Can be in 0.

The alumina of 5mm and nitrogen convert the hole that a diameter drills to be 60 μ M on aluminous pottery and porcelain. Stiletto speed can amount to 20 aperture / S. Delimiting piece - in the craft of lobation, laser Cutting arrives the 1/3 of material ply, use mechanical means lobe of a leave next, speed can amount to 50mm/s. Below the premise that achieves treatment quality requirement, producing can be industry makes a medium critical variable. The industry that applies tall productivity to ask to will exceed the outstanding character of short pulse laser is made in, connect fast the output power that increased TruMicro 5000 of leather second laser in proportion. New-style TruMicro 5070 and TruMicro 5270 are laser of second of skin of green light of power 100W glow and 60W respectively, arteries and veins is wide it is in 10ps. Be based on the technology of laser power enlarge of disc type, can reduce laser to heat up lenticular effect mediumly in medium, gain quality of good beam of light and higher laser power. Because all connecting,exceed short pulse laser quickly to have dual class power adjustment characteristic, treatment effect can repeat implementation below all sorts of circumstances. The exterior adjustment outside amplifier module can adjust pulse energy and frequency, this ensured character of beam of light won't suffer the effect of the change of laser parameter. CNC Milling