Stereolithography (SLA) – Nhọrọ kacha mma maka mbipụta 3D dị elu
Stereolithography (SLA ma ọ bụ SL) bụ teknụzụ mbipụta 3D nke a na-eji resin fotosensitive eme ihe dị ka ihe eji arụ ọrụ. Teknụzụ a na-eji ihe ndị na-agwọ ngwa ngwa nke resin fotosensitive n'okpuru radieshon laser UV ebili mmiri kpọmkwem, na-eme ka mmepụta nke usoro 3D dị mgbagwoju anya dị irè site na imepụta oyi akwa site na oyi akwa.
N'oge a na-emepụta resin mmiri na-eme ka ọ sie ike ma sie ike ozugbo mgbe e tinyere ya n'ìhè UV (ogologo ebili mmiri dị ihe dị ka 250-400nm). Igwe SLA na-elekwasị anya kpọmkwem na laser UV n'elu resin fotosensitive, na-agwọ resin ahụ nwayọ nwayọ site na isi ruo n'ahịrị wee si n'ahịrị ruo n'elu, na-enweta nkọwa ziri ezi nke oyi akwa ọ bụla. A na-ewu ihe nlereanya 3D siri ike ma zuru ezu.
Stereolithography na-enye uru dị ka nhazi ịkpụzi dị elu, elu dị larịị, na imepụta nkọwa dị elu. A na-ejikarị ya eme ihe n'ihe gbasara imepụta ihe nlereanya ụlọ ọrụ mmepụta ihe, imepụta ngwaọrụ ahụike, imepụta ọla, imepụta ebu, na imepụta ihe nlereanya dị elu. Nhazi ya ngwa ngwa na nke ziri ezi na-eme ka usoro mmepe ngwaahịa dị mkpụmkpụ nke ukwuu, na-eweta mgbanwe na ihe ọhụrụ ka ukwuu na ụlọ ọrụ mmepụta ihe.
SLA (Stereolithography) abụghị naanị teknụzụ nnọchite anya dị mkpa na mbipụta 3D, kamakwa ọ bụ ngwọta dị irè nke ukwuu maka iru prototyping dị elu na mmepụta ahaziri obere ogbe, na-enyere ụlọ ọrụ aka iru ọkwa dị elu na nrụpụta ziri ezi.
Resins ndị na-agbanwe agbanwe nke na-enweghị mmetụta foto:
Uru: Ọnụ ego dị ala, ọgwụgwọ ngwa ngwa, ezigbo ike, obere viscosity
Ihe ọghọm: Nnukwu mgbochi ikuku oxygen, mbelata dị elu, mgbanwe nke ngwaahịa ebipụtara, obere nkenke, na mkpa maka ọgwụgwọ nke abụọ
Resins nke na-agbanwe foto nke Cationic:
Uru: Mbelata olu pere mpe mgbe a gwọrọ ya, ọnụego mmeghachi omume dị elu, enweghị mkpa maka ọgwụgwọ nke abụọ mgbe a kpụchara ya, enweghị mmetụta site na mgbochi oxygen, nkwụsi ike dị mma, njirimara igwe dị mma, na ezigbo nkenke.
Ihe ọghọm: Ọnụọgụ mmeghachi omume nwayọ nwayọ, oke viscosity, vinyl ethers nwere oke ikpughe na ọgwụgwọ nwayọ; epoxy na-agbawa agbawa
Sistemụ ngwakọ:
Sistemụ ngwakọta acrylate-epoxy na-ejikọta ụkpụrụ ọgwụgwọ abụọ ahụ e kwuru n'elu, ya na ndị na-amalite cationic na free radical na-arụkọ ọrụ ọnụ.
A na-ekewa resin mbipụta 3D n'ime resin fotosensitive free radical, resin cationic photosensitive, na sistemụ ngwakọ. Ever Ray, onye nrụpụta nwere ahụmịhe afọ 20 nke ọkachamara na mmepụta na mmepe nke resin photocurable, nwere ikike mmepụta kwa afọ nke tọn 20,000, ahịrị ngwaahịa zuru oke, na ikike ịhazi ngwaahịa. Resin mbipụta 3D gụnyere Polyurethane 7224-1, 7200, 7296-1, na 7253A-5.
