Investment casting, inozivikanwawo sewax-loss casting, chiumbwa chewakisi chinogadzirwa nenamo chinokandwa muzvikamu, uye ipapo mold yacho inoputirwa nedhaka, inova ivhu. Mushure mekuomesa chiumbwa chevhu, nyungudusa wakisi yemukati mumvura inopisa. Chiumbwa chevhu chewakisi yakanyunguduka chinotorwa chogochwa muhari. Yakagochwa. Kazhinji, pakugadzira madhaka evhu, gedhi rinosara, uye ipapo simbi yakanyungudutswa inodururwa mugedhi. Mushure mekutonhora, zvikamu zvesimbi zvinodiwa zvinogadzirwa.
Zvizvarwa zvakapfuura zvekutsvaga mari:
Mazwi akakosha: nguva inopedza uye inodhura
Investment casting inonziwo wax loss casting. Nzira yekurasa wakisi muChina yakatanga muChirimo neMatsutso Period uye ine nhoroondo refu.
Kurasa wakisi patani yewakisi inogadzirwa nenamo inokandwa muzvidimbu, uye ipapo patani yewakisi inonamwa nedhaka, inova patani yedhaka. Mushure mekuomesa chiumbwa chevhu, nyungudusa wakisi yemukati mumvura inopisa. Chiumbwa chevhu chewakisi yakanyunguduka chinotorwa chogochwa muhari.
Matanho ekudyara kukanda kwe 3D printer anounzwa pazasi.
Matanho masere e 3D kudhinda investment casting:
1. CAD Modelling, 3D Printing Yakarasika Foam
Mafaira edhijitari emhando yekukanda yakanyungudutswa akagadzirwa nekushandisa software yeCAD, uye obva atumirwa kunze mukati. STL fomati uye anodhindwa nekushandisa 3D printer (SLA tekinoroji inokurudzirwa 3D printa). Kudhinda kunowanzotora maawa mashoma.
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2. Tarisa uone kana paine maburi mumhando yekuumbwa yakanyungudutswa.
Surface polishing uye rimwe post-processing basa rinoitwa pane 3D yakadhindwa modhi kuti ibvise iyo yepamusoro lamination. Wobva wanyatsotarisa kana modhi yacho ine maburi kana makatsemuka.
3. Kupfeka kwepamusoro
Kana iyo modhi inotumirwa kune yakavakirwa, iyo pamusoro peiyo modhi inotanga kuvharwa nekeramics slurry. Iyo slurry layer inofanirwa kuve yakabatana neiyo investment casting modhi, uye mhando yekutanga slurry layer ichakanganisa zvakananga kunaka kwepamusoro kwekupedzisira kukanda.
4. Kubhomba
Mushure mokunge marara ekeramics akaputirwa, iyo yekunze yekeramics slurry ijecha re viscous. Mushure mekuoma, dzokorora matanho ekuputira slurry uye kunamatira jecha kusvikira goko rasvika pahukobvu hunodiwa.
5. Kugocha nekuchenesa
Kana goko raoma, rinoiswa muchoto uye rinopiswa kusvikira mamodheru ekunyungudusa ari mukati apiswa akachena. Panguva ino, goko richava ceramics zvachose nekuda kwekupisa. Mushure mokubviswa muchoto, nzvimbo yemukati yevira inofanira kucheneswa zvakakwana nekushambidzwa, uye yozoomeswa uye inopisa.
6. Kukandira
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Nenzira yekurasa, kudzvanywa, kusveta vacuum uye simba recentrifugal, simbi yakanyungudutswa inozadzwa negoko risina chinhu uye yobva yatonhodzwa.
7. Demodelling
Mushure mekunge simbi yemvura yanyatsotonhorera uye yakaumbwa, iyo ceramic shell kunze kwesimbi inocheneswa ne mechanical vibration, kuchenesa kemikari kana mvura inoyerera.
8. Post-processing
Kurongeka kwedimensional, density uye mamwe ma mechanic properties emhando dzesimbi anogonawo kuyerwa nekurapwa kwepamusoro kana kuwedzera machining.
Iyo SLA 3D printer yeSHDM inogona kushandiswa kugadzira mold dzepurasitiki nekushandisa fusible uye yakakwirira tembiricha inodzivirira. Yakanyatsokodzera kukanda zvikamu nenzira yekurasika wakisi.
Mushure mekunge kudhindwa kwehupfu hwepurasitiki kwapera, zvimedu zvehupfu zvinosara zvichabviswa, uye ipapo kupinza kwewakisi kuchashandiswa kuve nechokwadi chekuti mold yepurasitiki yakavharwa uye yakachena kuvandudza kunaka kwezvikamu zvekukanda mari.
Iyo inotevera nzira yekurapa yakafanana neyechinyakare nzira yekugadzira: kutanga, iyo ceramic coating inoputirwa pamusoro pepamusoro pepurasitiki mold, uye ipapo inoiswa muchoto.
Kana tembiricha inopfuura 700 C, mold yepurasitiki inopisa zvachose pasina chero yakasara, inovawo mavambo ezita rewax kurasikirwa nzira.
3D kudhinda kunogona kuona yakanyanya kuomarara dhizaini, uye kuita mari yekukanda mold nekukurumidza, zviri nyore uye zvine hupfumi. Inoshandiswa zvakanyanya mumotokari, zvishongo, kugadzira michina uye mamwe maindasitiri.
Nguva yekutumira: Aug-22-2019