Seramiki min bɛ se ka alimina sɛgɛn, o dilanni taabolo ye mun ye?
1. mugu labɛnni .
The aluminum oxide powder in the factory is prepared into powder materials according to different product requirements and different molding processes. The particle size of the powder is less than 1μm micron, if the manufacture of high-purity alumina ceramic products in addition to the purity of alumina in 99.99%, but also need to ultrafine grinding and make its particle size distribution uniform. When the wear-resistant plate is extruded or injection Molilen, sirilan ni plastiki ka kan ka don mugu la, a ka c’a la, funteni hakɛ walima resin ni girinya hakɛ ye 10-30% ye, ani binder organique ka kan ka ɲagami ɲɔgɔn na ni alumina mugu ye hakɛ la 150-200 walasa ka mɔli baara nɔgɔya.
Mugu min bɛ dilan ni funteni digilen ye, o mago tɛ ka binder dɔ fara a kan. ni semi-automatique walima automatique dry pressing mouling bɛ kɛ, mugu in bɛ ni fɛɛrɛ kɛrɛnkɛrɛnnenw ye, wa a ka kan ka kɛ ka furaji kɛ ka mugu furakɛ ani ka a kɛ i n’a fɔ a bɛ kɛ cogo min na, walasa ka muguji kɛ ka a kɛ a yɛrɛ la, o bɛ kɛ sababu ye ka mɔli kogo lajɔ{2, ka kɛɲɛ ni mold ye, ka kɛɲɛ ni mold ye ani ka dɔ bɔ a la ani ka frite kɛ ka dɔ fara a kan ani ka a kɛ fɛn ye min bɛ kɛ ka fɛn dɔ fara a kan ani ka a kɛ fɛn ye min bɛ kɛ ka a kɛ fɛn ye. 1 ka se 2% ma tulumafɛn na, i n’a fɔ asidi stɛariki ani binder pva. ka se presse mouding jalen ma, mugu fiyɛli granulation de ka kan, o min kɔnɔ polivinili alcool bɛ don a kɔnɔ i n’a fɔ binder.
2. Moli kɛcogo .
The forming methods of alumina ceramic products include dry pressing, grouting, extrusion, cold isostatic pressing, injection, casting, hot pressing and hot isostatic pressing. In recent years, at home and abroad have developed a filter molding, direct solidification injection molding, gel injection molding, centrifugal injection molding and solid free molding technology. Different product shapes, sizes, complex shapes and precision products require different Molding methods. A daminɛcogo ka ɲɛsin a dilanni ma:
◆ grouting molding method: grouting molding is the earliest molding method min bɛ kɛ alumina seramiki la. ka da jipsum moule baara kan, a musaka ka dɔgɔ ani a ka nɔgɔn ka bonya ni a cogoya gɛlɛnw ye ani grouting molding kilisi ye alumina slurry{. ye a ka c’a la ji bɛ kɛ i n’a fɔ flux medium, ani o kɔfɛ, ji bɛ kɛ ji ye, ani o kɔfɛ, ji bɛ kɛ fɛn ye min bɛ kɛ ka fɛnw sɛgɛsɛgɛ. Ni aw ye a sɔgɔ dafalen na, gazi bɛ bɔ, o kɔfɛ, pilatiri bɛ bɔn kɔfɛ. ka da ji minɛcogo kan ni pilatiri mɔli kapilɛriw ye, sɔgɔlan bɛ gɛlɛya mɔli la. Ni fɛnɲɛnamafagalan min bɛ se ka sɛgɛn, o ka kan ka bɔn ka tɛmɛ ni sɔgɔlilan ye min bɛ kɛ ni a bɛ kɛ ni a bɛ kɛ ni a bɛ kɛ ni a bɛ kɛ ni a bɛ kɛ ni a bɛ wuli ka bɔ a la ni a bɛ se ka wuli ka bɔ a la. Farikolo dɔgɔyali, sɔgɔsɔgɔninjɛ hakɛ caman ka kan ka kɛ ka se a dan na.
◆ Dry Press Molding: Alumina Ceramic Dry Press Molding technology dan ye cogo nɔgɔman na ani kɔnɔna kogo janya ka ca ni 1mm ye, janya ni cɛmancɛ hakɛ tɛ bonya ka tɛmɛ 4:1 fɛnw kan. Molding fɛɛrɛw ye uniaxial walima fila ye{. Press suguya fila bɛ sɔrɔ hydraulique suguya fila la ani mécanique pressure is the max-automatic press method{6} 200mpa{{ Fɛn min bɛ sɔrɔ.
O la, mugumuguw tilatilali kelen min bɛ kɛ ja digilen na, o nafa ka bon kosɛbɛ nɔgɔ facogo la. ni fasa hakɛ bɛ tiɲɛ walima ni a tɛ nɔba bila alimina seramiki yɔrɔw la minnu dilannen don ni hakɛ ye. mugumuguw ni 60μm cɛ, 60 ~ 200 cɛ, o bɛ se ka sɔrɔ ka sɔrɔ ka se ka fɛn bɛɛ sɔrɔ, ka se ka degunba sɔrɔ min bɛ se ka kɛ sababu ye.
Organique faralenw fana ka kan ka fara alumina seramiki slurry kan walasa ka kuran fila kɛ slurry particules sanfɛ walasa slurry ka se ka jɔ ka sɔrɔ a ma sigi. ka fara o kan, binders i n’a fɔ vinyl cellulose, alginate amine ani dispersants i n’a fɔ polyacrylame ani guem arabe are gromic groupe are gromuting. Baarakɛcogo.
3. Firiya fɛɛrɛw .
Fɛɛrɛ min bɛ kɛ ka seramiki farikolo granular densing ani ka fɛn gɛlɛn dɔ dilan, o bɛ wele ko sintering. Sintering fɛɛrɛ ye ka yɔrɔ lakolon bɔ billet farikolo yɔrɔw cɛ, ka gazi ni nɔgɔ organique hakɛ fitinin dɔ bɔ, ka fɛnɲɛnamafagalanw kɛ ka bonya ani ka ɲɔgɔn fara fɛn kuraw kan ka kɛ fɛn kuraw ye..
Sumayaminɛn min bɛ kɛ ka tasuma don, o ye kuran foro ye min bɛ baara kɛ kosɛbɛ. ka fara fiɲɛ tansiyɔn sintering kan, o kɔrɔ ye ko sintering min tɛ degun ye, tansiyɔn jiginni funteni ni tansiyɔn isostatiki funteniman bɛ yen{. hali ni degun min bɛ to ka wuli, o bɛ dɔ fara a bɔli kan, minɛnw ni nɔgɔw musaka ka bon kojugu, ani a janya ye ka tɛmɛ axial he heh he hehhean he hehhean he hehan Sintering bɛ baara kɛ ni gazi ye min ka funteni ka bon ani min bɛ tansiyɔn jiginni kɛ, a nafa ye ka funteni kelen sɔrɔ sira bɛɛ fɛ, wa a bɛnnen don ka sintering of complex shaped products. ka da a jɔcogo kelen kan, a kɔnɔfɛnw ka bon 30 ~ 50% ka tɛmɛ nɛnɛ digilen kan.
O la, sisan, aluminiyɔmu seramiki fɛn dɔw walima yɔrɔ kɛrɛnkɛrɛnnen dɔw minnu ka kan ka kɛ jamana lafasali kama, i n’a fɔ seramiki bɛrɛbɛnni, filɛlikɛlanw, nukiliya sɛnɛfɛnw ni marifaw ani fɛn wɛrɛw, foro bɛ baara kɛ ni sintering fɛɛrɛ ye min bɛ isotatiki la{.
Ka fara o kan, micro-onde sintering fɛɛrɛ bɛ yen, arc plasma sintering method, yɛrɛ-sɔgɔli sintering technology.
4 , finidoncogo ni a foroko dilanni .
Fɛn dɔw ka kan ka ban sintering kɔfɛ. fɛn minnu bɛ se ka kɛ kolow ye minnu dilannen don ni fɛn dilannenw ye, olu bɛ ɲini ka kɛ sanfɛla dafalen ye, i n’a fɔ filɛlikɛlan, walasa ka tulumafɛnw caya. ka da aluminiyɔmu seramiki fɛnw gɛlɛyaliba kan, plati minnu bɛ se ka sɛgɛn, olu ka kan ka ban ni birikiw girinya ni u polisili ye{3}} i n’a fɔ SIC, B4C walima Diamant{5}}
A ka c’a la, a bɛ kɛ ka bɔ sɛgɛnlafiɲɛbɔlan na ka taa a fɛ, a bɛ se ka kɛ fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ ka a sɔgɔ ka taa a fɛ, a bɛ se ka kɛ < 1μm micron al2O3 mugu walima a diamant paste ye ka fara a kan, laser processing ani ultrasonic processing grinding ani polishing methods fana bɛ se ka baara kɛ ni alumina ceramic ceramic cerame ye{6} wɛrɛw la ni dɔ wɛrɛw ye{6}.
