Stereolithography (SLA) - Chisankho Chabwino Kwambiri pa Kusindikiza Kwapamwamba kwa 3D
Stereolithography (SLA kapena SL) Ndi ukadaulo wosindikiza wa 3D wolondola kwambiri womwe umagwiritsa ntchito utomoni wosavuta kuunika ngati zinthu zopangira. Ukadaulo uwu umagwiritsa ntchito mphamvu zochiritsa mwachangu za utomoni wosavuta kuunika pogwiritsa ntchito kuwala kwa UV laser, zomwe zimathandiza kupanga bwino nyumba zovuta za 3D kudzera mu kupanga kwa gawo ndi gawo.
Pakupanga, utomoni wofewa ndi kuwala kwa dzuwa umapangidwa nthawi yomweyo ndipo umalimba ukakumana ndi kuwala kwa UV (kutalika kwa mafunde pafupifupi 250-400nm). Makina a SLA amaika laser ya UV pamwamba pa utomoni wofewa ndi kuwala kwa dzuwa, pang'onopang'ono akuchotsa utomoni kuchokera pa mfundo kupita pa mzere kenako kuchokera pa mzere kupita pamwamba, kuti akwaniritse zithunzi zolondola za gawo lililonse. Gawo ndi gawo, chitsanzo cha 3D cholimba komanso chatsatanetsatane chimapangidwa.
Stereolithography imapereka zabwino monga kulondola kwambiri pakuumba, malo osalala, komanso kubwerezabwereza kwatsatanetsatane kwapamwamba. Imagwiritsidwa ntchito kwambiri popanga zitsanzo zamafakitale, kupanga zida zamankhwala, kupanga zodzikongoletsera, kupanga nkhungu, komanso kupanga zitsanzo zapamwamba kwambiri. Kupanga kwake mwachangu komanso molondola kumafupikitsa kwambiri nthawi yopanga zinthu, kubweretsa kusinthasintha kwakukulu komanso zatsopano kumakampani opanga.
SLA (Stereolithography) si ukadaulo wofunikira kwambiri pakusindikiza kwa 3D, komanso njira yothandiza kwambiri yopezera ma prototyping apamwamba komanso kupanga zinthu zazing'ono zomwe zimakonzedwa mwamakonda, zomwe zimathandiza makampani kukwaniritsa miyezo yapamwamba popanga zinthu molondola.
Ma Resins Osavuta Kujambula Zithunzi:
Ubwino: Mtengo wotsika, kuchira mwachangu, kulimba bwino, kukhuthala kochepa
Zoyipa: Kuletsa kwambiri mpweya, kuchepa kwambiri, kupotoka kwa zinthu zosindikizidwa, kusalondola kwenikweni, komanso kufunikira kokonzanso kwachiwiri.
Ma Resins a Cationic Photosensitive:
Ubwino: Kuchepa kwa voliyumu kumachepetsa mphamvu ya chinthucho, kuthamanga kwambiri kwa zochita, palibe chifukwa chochizira pambuyo pochiumba, sichikhudzidwa ndi kuletsa mpweya, kukhazikika bwino kwa mawonekedwe ake, mawonekedwe abwino kwambiri a makina, komanso kulondola kwambiri.
Zoyipa: Kuthamanga pang'onopang'ono kwa reaction, kukhuthala kwakukulu, ma vinyl ethers ali ndi mlingo waukulu wa kuwonetsedwa komanso kuchira pang'onopang'ono; ma epoxyes ndi ofooka.
Machitidwe Osakanikirana:
Machitidwe a acrylate-epoxy hybrid amaphatikiza mfundo ziwiri zomwe zatchulidwa pamwambapa, ndi zoyambitsa ma cationic ndi ma free radical zomwe zimagwira ntchito limodzi.
Ma resini osindikizira a 3D ali m'magulu awiri: ma resini opangidwa ndi ma free radical photosensive resins, ma resini opangidwa ndi ma cationic photosensive resins, ndi makina osakanizidwa. Ever Ray, wopanga yemwe ali ndi zaka 20 zakuchitikira pakupanga ndi kupanga ma resini opangidwa ndi ma phototherapy, ali ndi mphamvu yopangira matani 20,000 pachaka, mzere wonse wazinthu, komanso kuthekera kosintha zinthu. Ma resini osindikizira a 3D akuphatikizapo Polyurethane 7224-1, 7200, 7296-1, ndi 7253A-5.
