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Kukonza laser n'kofala kwambiri m'moyo wathu watsiku ndi tsiku ndipo ambiri a ife timadziwa bwino. Nthawi zambiri mungamve kuti mawu akuti nanosecond laser, picosecond laser, femtosecond laser. Onsewa ndi a ultrafast laser. Koma kodi mukudziwa momwe mungawasiyanitsire?
Choyamba, tiyeni tipeze tanthauzo la "chiwiri" ichi.
Nanosekondi imodzi = 10-9 sekondi
Picosekondi imodzi = 10-12 sekondi
1 femtosekondi = 10-15 sekondi
Chifukwa chake, kusiyana kwakukulu pakati pa laser ya nanosecond, laser ya picosecond ndi laser ya femtosecond kuli mu nthawi yawo.
Tanthauzo la utlrafast laser
Kalekale, anthu ankayesa kugwiritsa ntchito laser pochita micromachining. Komabe, popeza laser yachikhalidwe imakhala ndi kugunda kwa mtima kwakutali komanso mphamvu yochepa ya laser, zinthu zomwe ziyenera kukonzedwa zimakhala zosavuta kusungunuka ndikupitilirabe kuuluka. Ngakhale kuti kuwala kwa laser kumatha kuyikidwa pamalo ang'onoang'ono kwambiri a laser, kutentha kwa zinthuzo kumakhala kwakukulu kwambiri, zomwe zimachepetsa kulondola kwa kukonza. Kuchepetsa kutentha kokha ndiko komwe kungapangitse kuti kukonza kukhale bwino.
Koma pamene laser yothamanga kwambiri ikugwira ntchito pa zipangizo, zotsatira zake zimakhala ndi kusintha kwakukulu. Pamene mphamvu ya pulse ikuwonjezeka kwambiri, mphamvu zambiri zimakhala zamphamvu zokwanira kuchotsa zamagetsi akunja. Popeza kuyanjana pakati pa laser yothamanga kwambiri ndi zipangizozo kuli kochepa, ion imakhala itachotsedwa kale pamwamba pa zinthuzo isanatumize mphamvu ku zipangizo zozungulira, kotero palibe kutentha komwe kudzabweretsedwe ku zipangizo zozungulira. Chifukwa chake, ultrafast laser processing imadziwikanso kuti cold processing.
Pali mitundu yosiyanasiyana ya ntchito za laser yothamanga kwambiri popanga mafakitale. Pansipa titchulapo ochepa:
1. Kuboola mabowo
Pakupanga bolodi la dera, anthu amayamba kugwiritsa ntchito maziko a ceramics kuti alowe m'malo mwa maziko apulasitiki achikhalidwe kuti azitha kuyendetsa bwino kutentha. Kuti alumikize zigawo zamagetsi, mabowo ang'onoang'ono okwana μm ayenera kubooledwa pa bolodi. Chifukwa chake, kuti maziko akhale olimba popanda kusokonezedwa ndi kutentha komwe kumalowa panthawi yobowola mabowo kwakhala kofunikira kwambiri. Ndipo picosecond laser ndiye chida chabwino kwambiri.
Laser ya Picosecond imapangitsa kuti dzenje liziboola pogwiritsa ntchito percussion boring ndipo imasunga kufanana kwa dzenjelo. Kuwonjezera pa circuit board, laser ya picosecond ingagwiritsidwenso ntchito poboola dzenje lapamwamba kwambiri pa filimu yopyapyala ya pulasitiki, semiconductor, filimu yachitsulo ndi safiro.
2. Kulemba ndi kudula
Mzere ungapangidwe mwa kusanthula kosalekeza kuti uphimbe kugunda kwa laser. Izi zimafuna kusanthula kwakukulu kuti zilowe mkati mwa zoumba mpaka mzerewo utafika pa 1/6 ya makulidwe a zinthuzo. Kenako lekanitsani gawo lililonse kuchokera ku maziko a zoumba pamodzi ndi mizere iyi. Mtundu uwu wa kulekanitsa umatchedwa kulemba.
Njira ina yolekanitsira ndi kudula pogwiritsa ntchito laser. Imafunika kuchotsa zinthuzo mpaka zitadulidwa bwino.
Pa kulemba ndi kudula komwe kwatchulidwa pamwambapa, laser ya picosecond ndi laser ya nanosecond ndi njira zabwino kwambiri.
3. Kuchotsa chophimba
Njira ina yogwiritsira ntchito laser yothamanga kwambiri ndi kuchotsa chophimba. Izi zikutanthauza kuchotsa chophimbacho molondola popanda kuwononga kapena kuwononga pang'ono maziko. Kuchotsa chophimbacho kungakhale mizere ya maikromita angapo m'lifupi kapena kukula kwakukulu kwa masentimita angapo. Popeza m'lifupi mwa chophimbacho ndi kakang'ono kwambiri kuposa m'lifupi mwa kuchotsedwa, kutentha sikungasunthire kumbali. Izi zimapangitsa laser ya nanosecond kukhala yoyenera kwambiri.
Laser ya Ultrafast ili ndi kuthekera kwakukulu komanso tsogolo labwino. Ili ndi kuthekera kokonza zinthu pambuyo pake, yosavuta kuphatikiza, imagwira ntchito bwino kwambiri, imagwiritsa ntchito zinthu zochepa, komanso imachepetsa kuipitsa chilengedwe. Yagwiritsidwa ntchito kwambiri m'magalimoto, zamagetsi, zida zamagetsi, kupanga makina, ndi zina zotero. Kuti laser ya ultrafast igwire ntchito bwino kwa nthawi yayitali, kutentha kwake kuyenera kusamalidwa bwino. Ma chiller amadzi oyenda a S&A Teyu CWUP ndi abwino kwambiri poziziritsa ma laser a ultrafast mpaka 30W. Magawo a chiller a laser awa ali ndi kulondola kwakukulu kwa ±0.1℃ ndipo amathandizira ntchito yolumikizirana ya Modbus 485. Ndi mapaipi opangidwa bwino, mwayi wopanga thovu wakhala wochepa kwambiri, zomwe zimachepetsa kukhudza kwa laser ya ultrafast.
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