Resin foto na-ezo aka na ihe eji eme ọkụ na-agwọ prototyping ngwa ngwa.Ọ bụ mmiri ọkụ na-agwọ resin, ma ọ bụ mmiri mmiri photosensitive resin, nke a na-emekarị nke oligomer, photoinitiator na diluent.The photosensitive resin ejiri maka SLA bụ otu ihe ahụ ka ọkụ nkịtị na-agwọ prepolymer.Agbanyeghị, ebe ọ bụ na isi iyi ọkụ ejiri maka SLA bụ ọkụ monochromatic, nke dị iche na ọkụ ultraviolet nkịtị, ma nwee ihe dị elu maka ọgwụgwọ ọnụego, resin photosensitive ejiri maka SLA n'ozuzu kwesịrị inwe njirimara ndị a.
(1) Viscosity dị ala.Ngwọta ọkụ dabere na ụdị CAD, akwa resin site na oyi akwa etinyere n'ime akụkụ.Mgbe otu oyi akwa gwụchara, n'ihi na esemokwu elu nke resin dị ukwuu karịa nke resin siri ike, ọ na-esiri ike resin mmiri ahụ na-akpaghị aka na-ekpuchi elu nke resin siri ike a gwọchara A ghaghị ikpochapụ ọkwa mmiri resin ma kpuchie ya otu ugboro. enyemaka nke scraper akpaka, na oyi akwa na-esote nwere ike ịhazi naanị mgbe ọkwa mmiri dị larịị.Nke a na-achọ ka resin nwere obere viscosity iji hụ na ọkwa ya dị mma na ịrụ ọrụ dị mfe.Ugbu a, a na-achọkarị viscosity resin ka ọ dị n'okpuru 600 CP · s (30 ℃).
(2) Obere ọgwụgwọ shrinkage.Oghere dị n'etiti resin molecules mmiri bụ van der Waals Force action distance, nke bụ ihe dịka 0.3 ~ 0.5 nm.Mgbe a gwọchara ya, a na-ejikọta ụmụ irighiri ihe ndị ahụ ma mepụta usoro netwọkụ.A na-agbanwe oghere dị n'etiti ụmụ irighiri ihe ka ọ bụrụ anya njikọ covalent, nke dị ihe dịka 0.154 nm.N'ụzọ doro anya, anya dị n'etiti ụmụ irighiri ihe tupu na mgbe a gwọchara ya na-ebelata.Ebe dị anya nke mmeghachi omume polymerization dị n'etiti ụmụ irighiri ihe kwesiri ibelata 0.125 ~ 0.325 nm.Ọ bụ ezie na n'ime usoro mgbanwe kemịkalụ, C = C na-agbanwe na CC na ogologo nkekọ na-abawanye ntakịrị, ntinye aka na mgbanwe nke anya mmekọrịta intermolecular dị ntakịrị.Ya mere, ụda shrinkage bụ ihe a na-apụghị izere ezere mgbe ọ gwọchara ya.N'otu oge ahụ, tupu na mgbe ọgwụgwọ gasịrị, site na ọgba aghara gaa n'usoro ọzọ, a ga-enwekwa mbelata olu.Shrinkage bụ nnọọ adịghị mma na-akpụ nlereanya, nke ga-emepụta esịtidem nchegbu, nke dị mfe ime ka deformation, warpage na cracking nke ihe nlereanya akụkụ, na-emetụta nnọọ eziokwu nke akụkụ.Ya mere, ịmalite resin dị ala bụ isi nsogbu nke resin SLA chere ugbu a.
(3) Ọnụọgụ ọgwụgwọ ngwa ngwa.N'ozuzu, ọkpụrụkpụ nke ọ bụla oyi akwa bụ 0.1 ~ 0.2 mm maka ịgwọ oyi akwa site oyi akwa n'oge ịkpụzi, na otu akụkụ kwesịrị ka a gwọọ maka otu narị na puku kwuru puku n'ígwé.Ya mere, ọ bụrụ na a ga-emepụta ihe siri ike n'oge dị mkpirikpi, ọnụọgụ ọgwụgwọ dị ezigbo mkpa.Oge ekpughere nke ọkụ laser ruo n'ókè bụ naanị na nso nke microseconds ruo milliseconds, nke fọrọ nke nta ka ọ bụrụ oge ndụ obi ụtọ nke onye fotoinitiator ejiri.Ọnụ ọgụgụ ọgwụgwọ dị ala ọ bụghị nanị na-emetụta mmetụta ọgwụgwọ, ma ọ na-emetụtakwa ọrụ arụmọrụ nke igwe na-akpụzi, n'ihi ya, ọ na-esiri ike ịkwado maka mmepụta azụmahịa.
(4) Obere ọzịza.Na usoro nke ihe nlereanya akpụ, mmiri mmiri resin e kpuchie na ụfọdụ gwọrọ workpieces, nke nwere ike banye n'ime gwọrọ akụkụ na zaa nke gwọrọ resin, butere mmụba nke akụkụ size.Naanị mgbe ọzịza resin dị ntakịrị ka a ga-ekwe nkwa izi ezi nke ihe nlereanya ahụ.
(5) Mmetụta ọkụ dị elu.N'ihi na SLA na-eji ọkụ monochromatic, ọ na-achọ ka ogologo ogologo nke resin photosensitive na laser ga-adabarịrị, ya bụ, ogologo ogologo nke laser kwesịrị ịdị nso na ogologo ogologo mmịfe nke resin photosensitive dị ka o kwere mee.N'otu oge ahụ, absorption wavelength nso nke photosensitive resin kwesịrị warara, nke mere na ọgwụgwọ na-eme naanị n'ókè irradiated site laser, ka mma n'ichepụta ziri ezi nke akụkụ.
(6) Ọkwa ọgwụgwọ dị elu.Enwere ike belata mbelata nke ụdị ịkpụzi ịkpụzi post, ka o wee belata nrụrụ nrụrụ post.
(7) Ike mmiri dị elu.Ike mmiri dị elu nwere ike hụ na enweghị nrụrụ, mgbasawanye na peeling interlayer na usoro ọgwụgwọ post.
Oge nzipu: Jun-01-2022