Nhoroondo Pfupi ye Investment Casting

Nhasi muchinyorwa chino tinoedza kusuma nhoroondo pfupi nezveinvestment casting process. Senzira yekare asi itsva yekukanda, iyo yekukanda mari yakagadziridzwa seyo tekinoroji nyowani yakasimudzwa nguva nenguva. Nekuda kwekuvandudza tekinoroji yemazuva ano, yekukanda zvinhu nemichina, kunyangwe nzira yekutanga yakada kufanana neyaishandiswa zviuru zvemakore apfuura, kukanda kwekudyara kunove kwechimanjemanje uye majekiseni ane zvirinani kumusoro uye kushivirira kwakasimba pakugadzirwa kwakanyanya. .

Nhoroondo yekurasika-wax kukanda yakatanga zviuru zvemakore. Kushandiswa kwayo kwekutanga kwaive kwezvidhori, zvishongo uye zvishongo, kushandisa nyuchi dzechisikigo pamatani, ivhu rekuumba uye mabhero anoshandiswa nemaoko ekupisa moto. Mienzaniso yakawanikwa pasi rese muIndia's Harappan Civilization (2500-2000 BC) zvidhori, makuva eEgypt eTutankhamun (1333-1324 BC), Mesopotamia, Aztec neMayan Mexico, uye budiriro yeBenin muAfrica uko maitiro akaburitsa mifananidzo yakadzama ye mhangura, ndarira negoridhe.

Rugwaro rwekutanga rwunozivikanwa runotsanangura nzira yekukanda mari (Schedula Diversarum Artium) yakanyorwa makore akapoteredza 1100 AD naTheophilus Presbyter, mumongi uyo akatsanangura maitiro akasiyana-siyana ekugadzira, kusanganisira resipi yematehwe. Iri bhuku rakashandiswa nemuvezi uye mupfuri wegoridhe Benvenuto Cellini (1500-1571), uyo akatsanangura munhoroondo yehupenyu hwake nzira yekuisa mari yaakashandisa kuPerseus aine Musoro weMedusa chivezwa chinomira muLoggia dei Lanzi muFlorence, Italy.

Investment casting yakatanga kushandiswa senzira yemazuva ano yeindasitiri mukupera kwezana ramakore rechi 19, apo vanachiremba vemazino vakatanga kuishandisa kugadzira korona uye inlays, sekutsanangurwa kwaDr. William H. Taggart weChicago, ane bepa ra1907 rakatsanangura magadzirirwo ake ehunyanzvi. Akagadzirawo musanganiswa wewakisi wezvivakwa zvakanakisa, akagadzira mari yekudyara, uye akagadzira muchina wekukanda mhepo.

Mumakore ekuma1940, kunyanya Hondo Yenyika II yakawedzera kudiwa kwekugadzira mambure ekugadzira uye alloys akasarudzika aisakwanisa kuumbwa nemaitiro echinyakare ekukanda, kana machining akawandisa anodiwa. Indasitiri yakashanduka kuita kuisa mari. Mushure mehondo, nzira yakarasika yekukanda wakisi yakapararira kune akawanda ekutengeserana uye maindasitiri ekushandisa akashandisa masimbi akaomarara uye akasimuka kuita hutongi mukugadzira pfuti nekushandisa tekinoroji nyowani kuderedza kushanda kwakanyanya.

Nzira dzemazuva ano dzekukandira wakisi (kurasika wakisi) dzinobva mukuvandudzika kuUnited Kingdom kwemaitiro egoko uchishandisa wakisi maitiro anozivikanwa senzira yekudyara X. Iyi nzira yakagadzirisa dambudziko rekubvisa wakisi nekuputira goko rakapedzwa uye rakaomeswa mumudziyo wekubvisa mhute. Hupfu hwaipinda mugoko kuti rinyunguduke nekunyungudusa wakisi. Iyi nzira yakave nekushanduka kwemakore kuita nzira yazvino yekunyungudutsa mhandara wakisi mu autoclave kana muchoto.