Ho latela phapang ea lehlabathe le sebelisetsoang ho etsa liforomo, mokhoa oa ho lahla lehlabathe o ka aroloa ka mefuta e mengata e fapaneng, joalo kaho lahla lehlabathe le letala, ho lahla lehlabathe le koahetsoeng (ho etsa likhetla), ho etsa lehlabathe le ithatafatsang le ho ntša lehlabathe le omeletseng (ho lahleheloa ke lekoeba le ho ntša vacuum). Sengoliloeng sena re tla kenyelletsa haholo mekhoa e meraro e latelang ea ho lahla lehlabathe:
Ho Lahlela Lehlabathe le Letala
Ha e le hantle lehlabathe le letala ke motsoako o metsi oa lehlabathe le letsopa, ha ho na lik'hemik'hale tse kenyelletsoang. Hlobo ea lehlabathe e hatelloa hammoho 'me e tšoara sebopeho sa eona. Khetho ea lehlabathe e amana haholo le mocheso oo tšepe e tšeloang ho oona. Lithempereicharang tseo koporo le tšepe li tšeloang ka tsona, letsopa le tima ka lebaka la mocheso, e leng letsopa le sa atoloheng. Kahoo ho e-na le hoo, tse tšelang tšepe hangata li sebetsa le lehlabathe la silica le theko e tlaase ha le bapisoa le lehlabathe le leng.
Resin-coated Sand Shell Casting
Li-binders tsa resin ke marenene a tlhaho kapa a maiketsetso a phahameng a qhibilihang. Ho boetse ho na le li-resin tse entsoeng ka serame, tse sebelisang sekontiri ho e-na le mocheso ho phekola se kopanyang. Li-binders tsa resin li ratoa haholo hobane thepa e fapaneng e ka finyelloa ka ho kopanya le li-additives tse fapaneng. Melemo e meng e kenyelletsa ho putlama ho hotle, gassing e tlase, 'me ba siea sebaka se setle sa ho lahla. Ts'ebetso ea ho lahla hlobo ea Shell e fana ka pheletso e betere ea bokaholimo, mamello e ntle ea maemo, le tlhahiso e phahameng ka lebaka la linako tse fokotsehileng tsa potoloho. Lisebelisoa tse ka sebelisoang ka mokhoa ona ke litšepe tse entsoeng ka tšepe, le li-alloys tsa aluminium le koporo. Thekhetla molding mokhoa oa ho lahlae hlahisa litharollo tsa ho boloka litšenyehelo bakeng sa libopeho tse thata, likepe tsa khatello, likarolo tse sa utloeleng boima ba 'mele, le li-castings tse hlokang ho qeta holimo holimo.
Boiketsi ba Lehlabathe
"Lehlabathe le ithatafatsang" ke lentsoe le hlahang ka mor'a hore indasteri ea lihlahisoa e amohele lik'hemik'hale tse kopanyang lik'hemik'hale. Ts'ebetsong ea ho kopanya lehlabathe, ntle le ho eketsa sekontiri, moemeli oa ho tiisa (ho thatafatsa) o ka thatafatsang binder o boetse o eketsoa. Ka mor'a ho bōptjoa le ho etsa motheo ka lehlabathe la mofuta ona, ha ho phekolo (e kang ho omisa kapa ho butsoetsa khase e thata) e sebelisetsoang ho thatafatsa hlobo kapa mokokotlo, 'me hlobo kapa mokokotlo o ka thatafala ka bo oona.
Hobane hlobo e entsoe ka mocheso oa kamore 'me ha ho hlokahale hore e futhumale, ho lahla lehlabathe le ithatafatsang ho boetse ho bitsoa mokhoa oa ho lahla o sa bake. Mokhoa oa ho ithatafatsa o ka aroloa ka acid-catalyzed furan resin le phenolic resin sand self-harding method, urethane resin sand in self-harding method le phenolic monoester self-harding.
Mokhoa oa ho lahla lehlabathe la Furan resin (mokhoa oa nobake) o sebelisa lehlabathe le koahetsoeng ka lehlabathe la furan ho etsa hlobo ea ho lahla. Ka mor'a ho kopanya lehlabathe la pele (kapa lehlabathe le tsosolositsoeng), metsi a furan resin le catalyst ea metsi ka mokhoa o ts'oanang, ebe o li tlatsa ka lebokoseng la mantlha (kapa lebokose la lehlabathe), ebe o le tiisa hore le thatafale ka har'a hlobo kapa hlobo ka lebokoseng la mantlha (kapa lehlabathe). box) ka mocheso oa kamore. Joale ho ile ha thehoa hlobo ea ho lahla kapa ho lahla, e bitsoang "self-harding batang-core box molding" (konokono), kapa mokhoa oa ho ithatafatsa (konokono).
Nako ea poso: Nov-06-2021