Thaum siv thiab khaws cia txhua hnub, kev ua haujlwm ruaj khov thiab cov khoom lag luam zoo ntawm 3D resins yog nyob ntawm kev saib xyuas kev tshawb fawb thiab tsim nyog. Raws li photosensitive polymer kua khoom, nws cov qauv molecular yog yooj yim cuam tshuam los ntawm ib puag ncig yam. Yog tias tsis muaj kev saib xyuas txhua hnub, kev hloov pauv viscosity, ua ntej- kho, kev sib kis, lossis kev ua haujlwm tsis zoo tuaj yeem tshwm sim, yog li cuam tshuam rau qhov raug molding thiab kev ntseeg siab ntawm cov khoom siv photopolymer additive manufacturing. Tsim kom muaj txheej txheem tu txhua hnub tsis yog tsuas yog ib qho kev ntsuas tsim nyog los xyuas kom meej cov khoom zoo tab sis kuj yog ib qho tseem ceeb txuas hauv kev txhim kho kev tsim khoom thiab kev nyab xeeb ntawm kev ua haujlwm.
Kev tswj hwm qhov chaw khaws cia yog lub hauv paus ntawm kev saib xyuas txhua hnub. Resins yuav tsum tau muab cia rau hauv lub teeb - pov thawj, kaw, txias, thiab qhuav qhov chaw, nrog rau qhov zoo tagnrho kub ntawm 5℃mus rau 25℃thiab ib tug txheeb ze av noo zoo dua hauv qab 60%. Lub teeb, tshwj xeeb tshaj yog lub teeb ultraviolet, tuaj yeem qhib photoinitiators, ua rau hauv zos lossis tag nrho ua ntej- kho. Yog li ntawd, cov thawv ntim khoom yuav tsum tau ua los ntawm cov ntaub ntawv opaque, thiab ntev raug rau lub teeb ntuj lossis lub teeb muaj zog ultraviolet yuav tsum zam kom ntau li ntau tau. Rau qhov loj - ntim ntim, nws raug nquahu kom siv cov khoom lag luam qub lub hau kaw thiab ntxiv rau nws nrog kev tiv thaiv roj inert lossis ib qho tsim nyog ntawm polymerization inhibitor kom qeeb oxidation thiab polymerization cov tshuaj tiv thaiv. Thaum qhib, cov resin yuav tsum tau siv sai li sai tau, los yog siv nyob rau hauv lub chaw tsim tshuaj paus qhov kev pom zoo txee lub neej raws li lub hnub qhib lub thawv, los tiv thaiv kom txhob ya raws los yog kis kab mob los ntawm rov raug huab cua.
Ua ntej- siv kev tshuaj xyuas thiab kev kho ua ntej tuaj yeem tiv thaiv cov pwm tsis zoo. Ua ntej txhua qhov kev siv, saib cov resin nto rau cov khoom tshem tawm, fibers, lossis xim txawv txav. Yog tias turbidity, txheej, lossis kev hloov pauv tseem ceeb hauv viscosity tau pom, nres siv cov khoom tam sim ntawd thiab ntsuas seb puas tsim nyog los yog hloov pauv. Rau cov resins xav tau ntev - thauj mus los los yog siv nyob rau hauv qis - qhov kub thiab txias ib puag ncig, ua ntej - sov rau lub chaw tsim tshuaj paus kev khiav hauj lwm qhov kub thiab txias nyob rau hauv ib tug tas li- qhov kub thiab txias ib puag ncig los kho nws viscosity mus rau qhov zoo li qub, tsis txhob sib sib zog nqus txheej ntawm lub taub hau printhead los yog kws kho hniav hniav vim tsis txaus flowability.
Ib puag ncig huv thiab tiv thaiv kev ua haujlwm yog qhov tseem ceeb sib npaug. Kev luam tawm thiab tshaj tawm- cov chaw ua haujlwm yuav tsum tau ua kom huv si kom tsis txhob muaj plua plav, plaub hau, lossis lwm yam khoom txawv teb chaws los ntawm kev poob rau hauv lub tank resin lossis chaw ua haujlwm. Hnav hnab looj tes thiab looj tsom iav thaum ua haujlwm los tiv thaiv cov resin los ntawm kev sib cuag ntawm daim tawv nqaij ncaj qha los yog txaws rau hauv qhov muag. Txawm hais tias feem ntau 3D resins tsis raug cais raws li siab - cov ntaub ntawv txaus ntshai, lawv lub xeev tsis kho tuaj yeem ua rau khaus khaus thiab tawv nqaij. Yog li ntawd, cov cua hauv zos zoo yuav tsum tau tswj xyuas, thiab cov kiv cua tawm los yog cov cuab yeej ua kom huv huv yuav tsum tau teeb tsa yog tias tsim nyog los txo qhov cuam tshuam ntawm cov khoom tsis haum rau tib neeg lub cev.
Kev tshaj tawm zoo- kev saib xyuas ua haujlwm yog qhov tseem ceeb rau cov khoom tiav tiav thiab kev nyab xeeb ntawm kev ua haujlwm. Kev ntxuav feem ntau yog siv cov kuab tshuaj xws li isopropyl cawv thiab yuav tsum tau ua nyob rau hauv qhov chaw zoo - qhov cua, kom deb ntawm cov nplaim taws qhib thiab siab - cov khoom siv kub. Kev siv dej-cov dej uas ntxuav tau tuaj yeem txo qhov hnyav hnyav, tab sis cov dej kub thiab lub sijhawm tseem yuav tsum tau tswj xyuas kom tsis txhob muaj microcracks los ntawm thermal shock lossis kev hloov hauv osmotic siab. Secondary curing yuav tsum ua raws li lub wavelength thiab lub zog tsis sib xws rau cov resin kom tsis txhob overexposure, uas yuav ua rau yellowing los yog embrittlement. Cov khoom kho yuav tsum tau khaws cia kom deb ntawm tshav ntuj ncaj qha thiab siab - qhov kub thiab txias los tiv thaiv UV aging thiab kub deformation.
Kev saib xyuas cov cuab yeej thiab cov thawv ntim khoom yog ib qho kev saib xyuas ntau zaus. Resin tanks, scrapers, nozzles, thiab lwm yam khoom siv yuav tsum tau muab ntxuav kom sai nrog cov kuab tshuaj tsim nyog tom qab siv los tiv thaiv cov residual resin los ntawm kev kho thiab adhering, cuam tshuam qhov smoothness thiab raug ntawm kev siv tom ntej. Cov cuab yeej ntxuav yuav tsum muab khaws cia rau hauv qhov chaw tsaus, qhuav kom tsis txhob raug mob. Cov khib nyiab thiab cov kuab tshuaj ntxuav yuav tsum tau sau thiab pov tseg raws li kev tiv thaiv ib puag ncig thiab kev nyab xeeb. Lawv yuav tsum tsis txhob muab pov tseg arbitrarily los tiv thaiv ib puag ncig muaj kuab paug los yog hluav taws kub.
Kev tshuaj xyuas thiab cov ntaub ntawv tsis tu ncua pab txheeb xyuas cov teeb meem tshwm sim. Nws raug nquahu kom tsim kom muaj cov ntaub ntawv siv cob, sau cov lej batch, hnub qhib, cov ntsiab lus siv, thiab ib puag ncig tsis zoo. Yog tias pom muaj qhov txawv txav ntawm kev ua haujlwm, qhov chaw tuaj yeem tshawb xyuas sai thiab ntsuas tsim nyog. Rau cov resins uas tsis tau siv ntev, viscosity thiab curing kev ua tau zoo yuav tsum tau coj mus kuaj thiab kuaj tsis tu ncua kom ntseeg tau tias lawv nyob twj ywm nyob rau hauv qhov kev pom zoo.
Feem ntau, kev saib xyuas txhua hnub ntawm 3D resins suav nrog ntau qhov ntev, suav nrog kev khaws cia, siv, tom qab- ua tiav, kev tu cov cuab yeej, thiab kev tswj cov ntaub ntawv. Lub hauv paus ntsiab lus tseem ceeb yog tsim kom muaj kev ua haujlwm zoo thiab ua tau raws li lub hauv paus ntsiab lus ntawm kev zam lub teeb, tswj qhov kub thiab txias, tiv thaiv dej noo, kev huv, thiab kev nyab xeeb. Tsuas yog nyob rau hauv txoj kev no tuaj yeem ua rau cov khoom siv ruaj khov ua haujlwm tau zoo tshaj plaws hauv kev ua haujlwm txhua hnub, txuas ntxiv nws lub neej kev pabcuam thiab ua kom muaj txiaj ntsig zoo, nyab xeeb, thiab siab - cov khoom tsim tawm hauv photopolymer additive manufacturing txheej txheem.
