(1) I-viscosity ephantsi.Ukunyanga kwe-UV kusekelwe kwimodeli ye-CAD, kwaye i-resin ilayishwe umaleko ngongqimba ukwenza iinxalenye.Emva kokuba umaleko wokuqala ugqityiwe, kunzima ukuba i-resin engamanzi igubungele ngokuzenzekelayo umphezulu we-resin eqinileyo ephilisiwe, kuba ukunyanzeliswa komphezulu we-resin kukhulu kunoko kwe-resin eqinile.Inqanaba le-resin kufuneka lihlanjululwe kwaye lifakwe kanye nge-automatic scraper, kwaye uluhlu olulandelayo lunokucutshungulwa emva kokuba umgangatho ulinganiswe.Oku kufuna ukuba i-resin ibe ne-viscosity ephantsi ukuqinisekisa umgangatho wayo omhle kunye nokulula ukusebenza.Okwangoku, i-viscosity ye-resin ifunwa ngokubanzi ukuba ibe ngaphantsi kwe-600 CP · s (30 ℃).
(2) Ukuncipha kokunyanga kuncinci.Umgama phakathi kweemolekyuli zeresin elulwelo ngumgama we-van der Waals force, malunga ne-0.3 ~ 0.5 nm.Emva kokunyanga, iimolekyuli ze-crosslink, kunye nomgama we-intermolecular ukwenza isakhiwo sothungelwano siguqulwa sibe ngumgama we-covalent bond, malunga ne-0.154 nm.Ngokucacileyo, umgama phakathi kweemolekyuli uyancipha ngaphambi nangemva kokunyanga.Umgama we-intermolecular we-polymerization reaction reaction uya kuncitshiswa nge-0.125 ~ 0.325 nm.Kwinkqubo yokutshintsha kweekhemikhali, i-C = C iba yi-CC, ubude bobhondi bukhula kancane, kodwa igalelo ekutshintsheni umgama wokusebenzisana kwe-intermolecular lincinci kakhulu.Ke ngoko, ukuncipha komthamo emva kokunyanga akunakuphepheka.Kwangaxeshanye, ngaphambi nangemva kokunyanga, ukuphazamiseka kuba ngocwangco, kwaye nokuncipha komthamo kuyenzeka.Oku kungathandeki kakhulu kwimodeli yokubumba i-shrinkage, eya kuvelisa uxinzelelo lwangaphakathi kwaye ikhokelela ngokulula kwi-deformation, i-warpage kunye nokuqhekeka kweengxenye zemodeli., Kwaye kuchaphazela ngokunzulu ukuchaneka kwamalungu.Ke ngoko, ukuphuhliswa kwe-resin ephantsi ye-shrinkage yeyona ngxaki iphambili ejongene ne-SLA resin okwangoku.
(3) Isantya sokunyanga siyakhawuleza.Ngokuqhelekileyo, ubukhulu boluhlu ngalunye yi-0.1 ~ 0.2 mm, enokuthi iqiniswe umaleko ngomqolo ngexesha lokubumba.Kuthatha amakhulu ukuya kumawaka amaleya ukuqinisa inxalenye egqityiweyo.Ngoko ke, ukuba isiqina siza kuveliswa ngexesha elifutshane, izinga lokunyanga libaluleke kakhulu.Ixesha le-exposure ye-laser beam ukuya kwindawo kuphela kuluhlu lwe-microseconds ukuya kwi-milliseconds, ephantse ilingane nobomi bemeko evuyayo ye-photoinitiator esetyenzisiweyo.Izinga lokunyanga eliphantsi alichaphazeli nje kuphela umphumo wokunyanga, kodwa lichaphazela ngokuthe ngqo ukusebenza kakuhle komatshini wokubumba, ngoko kunzima ukufaka isicelo kwimveliso yorhwebo.
(4) Ukwandiswa okuphantsi.Kwinkqubo yokwenza i-mold, i-resin ye-liquid isoloko igubungela inxalenye ephilisiwe ye-workpiece kwaye inokungena kwindawo ephilileyo, yenza ukuba i-resin ephilisiweyo ikhulise, ibangele ukwanda kwesayizi yenxalenye.Ukuchaneka komzekelo kunokuqinisekiswa kuphela ukuba ukuvuvukala kwe-resin kuncinci.
(5) Uvakalelo oluphezulu.Ngenxa yokuba i-SLA isebenzisa ukukhanya kwe-monochromatic, ubude be-photosensitive resin kunye ne-laser kufuneka buhambelane, oko kukuthi, ubude be-laser kufuneka busondele kangangoko kunokwenzeka kubude obuphezulu bokufunxa be-photosensitive resin.Kwangaxeshanye, uluhlu lwe-absorption wavelength ye-photosensitive resin kufuneka ibemxinwa, enokuqinisekisa ukuba ukunyanga kwenzeka kuphela kwindawo ye-laser irradiation, ngaloo ndlela kuphuculwe ukuchaneka kokwenziwa kwamalungu.
(6) Iqondo eliphezulu lokunyanga.Inokunciphisa i-shrinkage ye-post-curing molding model, ngaloo ndlela inciphisa i-deformation post-curing deformation.
(7) Amandla aphezulu amanzi.Amandla aphezulu amanzi anokuqinisekisa ukuba inkqubo yokunyanga emva kokunyanga ayiyi kuvelisa i-deformation, ukwanda kunye ne-interlayer peeling.
Ixesha lokuposa: Mar-28-2023