Photosensitive resin bivuga ibikoresho bikoreshwa mumucyo ukiza byihuse prototyping.Numucyo wamazi ukiza resin, cyangwa fotosensitif resin, igizwe ahanini na oligomer, fotoinitiator na diluent.Amafoto yimyumvire ikoreshwa kuri SLA mubyukuri ni nkumucyo usanzwe ukiza prepolymer.Ariko, kubera ko isoko yumucyo ikoreshwa kuri SLA ari urumuri rwa monochromatique, rutandukanye nurumuri rusanzwe rwa ultraviolet, kandi rukaba rusabwa byinshi murwego rwo gukira, resin yifotozi ikoreshwa muri SLA muri rusange igomba kuba ifite ibintu bikurikira.
(1) Ubukonje buke.Gukiza byoroheje bishingiye kuri moderi ya CAD, resin layer kubice byashyizwe mubice.Iyo igipande kimwe kirangiye, kubera ko ubuso bwubuso bwibisigisigi burenze ubw'ibisigara bikomeye, biragoye ko ibisigazwa byamazi bihita bitwikira hejuru yububiko bukomeye bwakize Urwego rwamazi ya resin rugomba gukurwaho no gutwikirwa rimwe hamwe ubufasha bwibikoresho byikora, kandi urwego rukurikira rushobora gutunganywa nyuma yurwego rwamazi aringaniye.Ibi bisaba resin kugira viscosity nkeya kugirango irebe neza kandi ikore neza.Noneho ibishishwa bya resin birasabwa kuba munsi ya 600 CP · s (30 ℃).
(2) Kugabanuka guke kugabanuka.Intera iri hagati ya molekile isukuye ni van der Waals imbaraga zikorwa, ni nka 0.3 ~ 0.5 nm.Nyuma yo gukira, molekile zirahuzwa kandi zigakora imiterere y'urusobe.Intera iri hagati ya molekile ihindurwamo intera ya covalent intera, ni nka 0.154 nm.Biragaragara, intera iri hagati ya molekile mbere na nyuma yo gukira iragabanuka.Intera yinyongera ya polymerisation imwe hagati ya molekile igomba kugabanuka kuri 0.125 ~ 0.325 nm.Nubwo muburyo bwo guhindura imiti, C = C ihinduka kuri CC kandi uburebure bwumubano bwiyongera gato, umusanzu muguhindura intera yimikoranire hagati ni muto cyane.Kubwibyo, kugabanuka kwijwi byanze bikunze nyuma yo gukira.Muri icyo gihe, mbere na nyuma yo gukira, kuva mu kajagari kugeza kuri gahunda nyinshi, hazabaho no kugabanuka kwijwi.Kugabanuka ntabwo ari bibi cyane muburyo bwo gukora, bizatanga imihangayiko y'imbere, byoroshye gutera deformation, warpage no gucamo ibice by'icyitegererezo, kandi bigira ingaruka zikomeye kubice.Kubwibyo, guteza imbere kugabanuka kwinshi nikibazo nyamukuru gihura na SLA resin muri iki gihe.
(3) Igipimo cyo gukira vuba.Mubisanzwe, ubunini bwa buri cyiciro ni 0.1 ~ 0.2 mm yo gukiza igipande kumurongo mugihe cyo kubumba, kandi igice kimwe kigomba gukira kubihumbi kugeza kubihumbi.Kubwibyo, niba igikomeye kigomba gukorwa mugihe gito, igipimo cyo gukira ni ngombwa cyane.Igihe cyo kumurika urumuri rwa laser kugeza kumurongo ni murwego rwa microseconds kugeza kuri milisegonda, ibyo bikaba bihwanye nubuzima bwa leta bushimishije bwubuzima bwa fotoinitiator yakoreshejwe.Igipimo gito cyo gukira ntikigira ingaruka gusa ku gukiza, ariko kandi kigira ingaruka ku buryo butaziguye imikorere yimashini ibumba, bityo biragoye kuba bikwiranye nubucuruzi.
(4) Kubyimba gato.Muburyo bwo gukora icyitegererezo, resin yamazi yatwikiriye bimwe mubikorwa byakize, bishobora kwinjira mubice byakize kandi bikabyimba ibisigarira byakize, bigatuma ubwinshi bwibice byiyongera.Gusa iyo kubyimba kwa resin ari bito birashobora kwemezwa ukuri kwicyitegererezo.
(5) Umucyo mwinshi.Kuberako SLA ikoresha urumuri rwa monochromatique, bisaba ko uburebure bwumurongo wa fotosensitif resin na laser bigomba guhura, ni ukuvuga, uburebure bwumurambararo wa lazeri bugomba kuba hafi yumubyimba mwinshi wa fonctionnement ya resin yunvikana uko bishoboka.Muri icyo gihe, uburebure bwumurambararo wibikoresho bya fotosensitif bigomba kuba bigufi, kugirango tumenye neza ko gukira bibaho gusa aho byatewe na lazeri, kugirango tunonosore neza ibice byakozwe.
(6) Impamyabumenyi yo hejuru.Kugabanuka kwimyanya ikiza icyitegererezo gishobora kugabanuka, kugirango ugabanye post ikiza deformasiyo.
(7) Imbaraga nyinshi zitose.Imbaraga nyinshi zitose zirashobora kwemeza ko nta guhinduka, kwaguka no guterana hagati mugikorwa cyo gukiza.
Igihe cyo kohereza: Jun-01-2022