Photosensitive resin inoreva zvinhu zvinoshandiswa pachiedza kurapa nekukurumidza prototyping.Iyo yemvura mwenje inorapa resin, kana yemvura photosensitive resin, iyo inonyanya kuumbwa neoligomer, photoinitiator uye diluent.Iyo photosensitive resin inoshandiswa kuSLA yakangofanana neyakajairwa mwenje inorapa prepolymer.Nekudaro, sezvo sosi yemwenje inoshandiswa kuSLA iri monochromatic mwenje, yakasiyana neyakajairwa ultraviolet mwenje, uye iine zvakakwirira zvinodiwa pakurapa chiyero, iyo photosensitive resin inoshandiswa kuSLA kazhinji inofanirwa kuve neinotevera maitiro.
(1) Low viscosity.Kurapa kwechiedza kunoenderana neCAD modhi, resin layer ne layer yakaiswa muzvikamu.Kana imwe layer yapera, nekuti kudhonzerana kwepamusoro kweresin kwakakura kupfuura kweiyo yakasimba resin, zvinonetsa kuti resin yemvura ivhare otomatiki pamusoro peiyo yakaporeswa solid resin Iyo resin yemvura nhanho inofanirwa kukweshwa nekuputirwa kamwe chete. rubatsiro rwe otomatiki scraper, uye jira rinotevera rinogona kugadziriswa chete mushure mekunge chiyero chemvura chaiswa.Izvi zvinoda kuti resin ive yakaderera viscosity kuti ive nechokwadi chekuyera kwayo uye kushanda kuri nyore.Iye zvino resin viscosity inowanzodiwa kuti ive pasi pe600 CP · s (30 ℃).
(2) Diki kurapa shrinkage.Nhambwe iri pakati pemvura resin mamorekuru ndiyo van der Waals force action distance, inenge 0.3 ~ 0.5 nm.Mushure mekurapa, mamorekuru anosanganiswa uye anoumba network network.Nhambwe iri pakati pemamorekuru inoshandurwa kuita covalent bond chinhambwe, chinenge 0.154 nm.Zviripachena, chinhambwe pakati pemamorekuru pamberi uye mushure mekurapa chinodzikira.Nhambwe yeimwe yekuwedzera polymerization reaction pakati pemamorekuru inofanira kudzikiswa ne0.125 ~ 0.325 nm.Kunyange zvazvo mukugadzirisa kwemakemikari kuchinja, C = C inoshandura kuCC uye urefu hwechisungo hunowedzera zvishoma, mupiro wekuchinja kwe intermolecular kupindirana kure kure kuduku zvikuru.Naizvozvo, kuderera kwevhoriyamu hakudzivisiki mushure mekurapa.Panguva imwecheteyo, kusati kwapera uye mushure mekurapa, kubva pakusagadzikana kuenda kune yakawedzera kurongeka, pachavawo nekuderera kwevhoriyamu.Shrinkage haina kunaka kune iyo yekuumba modhi, iyo inoburitsa kushushikana kwemukati, izvo zviri nyore kukonzera deformation, warpage uye kuputika kwezvikamu zvemuenzaniso, uye zvinokanganisa zvakanyanya kurongeka kwezvikamu.Naizvozvo, kugadzira yakaderera shrinkage resin ndiro dambudziko guru rakatarisana neSLA resin parizvino.
(3) Kukurumidza kuporesa mwero.Kazhinji, ukobvu hwega rega rega ndeye 0.1 ~ 0.2 mm yekurapa dhizaini neyakagadzika panguva yekuumbwa, uye chikamu chimwe chinoda kurapwa kwemazana kusvika kuzviuru zvezvikamu.Naizvozvo, kana iyo yakasimba ichizogadzirwa munguva pfupi, chiyero chekurapa chakakosha zvikuru.Iyo yekuratidzwa nguva yelaser beam kusvika padanho inongori mukati meiyo microseconds kune milliseconds, iyo inenge yakaenzana nehupenyu hwekunakidzwa hwehupenyu hwephotoinitiator yakashandiswa.Kuderera kwekuporesa mwero hakungokanganisa maitiro ekurapa, asi zvakare kunokanganisa zvakananga kushanda kwemushini wekuumba, saka zvakaoma kuve wakakodzera kugadzirwa kwekutengesa.
(4) Kuzvimba kudiki.Mukuita kwekugadzira modhi, iyo resin yemvura yakavharwa pane mamwe akaporeswa workpiece, ayo anogona kupinda mukati mezvikamu zvakaporeswa uye kuzvimba resin yakarapwa, zvichikonzera kuwedzera kwechikamu.Chete kana resin kuzvimba kuri kudiki ndiko kugona kweiyo modhi kunovimbiswa.
(5) High chiedza senitivity.Nekuti SLA inoshandisa mwenje wemonochromatic, inoda kuti iyo wavelength yephotosensitive resin uye laser inofanirwa kuenderana, kureva kuti, iyo wavelength yelaser inofanira kunge iri padyo neakanyanya kunyura wavelength yephotosensitive resin kusvika pazvinobvira.Panguva imwecheteyo, iyo yekunyudza yavelength yemhando yephotosensitive resin inofanirwa kuve yakatetepa, kuitira kuti ive nechokwadi chekuti kurapa kunoitika chete panzvimbo yakaruzwa nelaser, kuitira kuti uvandudze kuita kwekugadzira kwezvikamu.
(6) High kurapa degree.Iyo shrinkage yeiyo post yekurapa molding modhi inogona kuderedzwa, kuitira kudzikisa iyo post kurapa deformation.
(7) Simba guru remvura.Simba rakanyorova repamusoro rinogona kuve nechokwadi kuti hapana deformation, kuwedzera uye interlayer peeling mumashure ekurapa maitiro.
Nguva yekutumira: Jun-01-2022