1. Lintho tsa motheo tsa lintho tse bonahalang le likarolo tsa microstructural tsa Alumina Ceramics
1.1 Sebopeho, Bohloeki Litšobotsi, le Crystallographic Residence
(Alumina Ceramic Wear Liner)
Alumina (Al ₂ O MANE), kapa aluminium oxide, ke e 'ngoe ea tse sebelisoang haholo ka lirafshoa tsa tekheniki moralong oa indasteri ka lebaka la botsitso ba eona bo holimo ba matla a mochini., botsitso ba lik'hemik'hale, le ho boloka litšenyehelo.
Ha e entsoe ka li-wear liner, li-ceramics tsa alumina hangata li hlahisoa ka maemo a bohloeki ho tloha ho 85% ho 99.9%, e nang le bohloeki bo phahameng bo tsamaellanang le ho tiea ho matlafalitsoeng, beha khanyetso, le katleho ea mocheso.
Karolo e ka sehloohong ea kristale ke alpha-alumina, e akareditseng sekgutlo sa hexagonal se haufi (HCP) sebopeho se hlalosoang ke bonding bo tiileng ba ionic le covalent, ho eketsa boemo ba eona bo phahameng ba ho qhibiliha (~ 2072 °C )le tlaase mocheso conductivity.
Microstructural, li-porcelain tsa alumina li na le hantle, lijo-thollo tse lekanang tseo boholo ba tsona le ho potoloha ha tsona ho laoloang nakong eohle ea sintering ho eketsa thepa ea bolulo kapa ea khoebo..
Boholo ba lijo-thollo bo atisa ho tloha ho submicron ho ea ho palo ea micrometer, e nang le lithollo tse ntle ka ho fetesisa tse matlafatsang ho tiea ha fracture le ho hana ho ata ha crack tlas'a pakete e hlabang..
Lisebelisoa tse nyane joalo ka magnesium oxide (MgO) hangata li hlahisoa ka trace total ho thibela kholo e sa tloaelehang ea lijo-thollo nakong eohle ea mocheso o phahameng oa sintering, ho etsa bonnete ba hore microstructure e tsitsitseng le ts'ireletso ea dimensional.
Sehlahisoa se hlahisoang se bonts'a ho tiea ha Vickers ho 1500– 2000 HV, e fetang haholo ya tshepe e thata (hangata 600– 800 HV), e etsa hore e se ke ea senyeha ka mokhoa o ikhethang maemong a ho apara holimo.
1.2 Tshebetso ea Mechini le Thermal Maemo a Indasteri
Li-liner tsa aluminium tsa ceramic li khethiloe haholo-holo bakeng sa ho hanyetsa ha tsona ho sa thabiseng, abrasive, le mekhoa ea ho roala e tloahelehileng linthong tse ngata tse hlokomelang litsamaiso.
Ba na le matla a phahameng a khatello (hoo e ka bang 3000 MPa), boima bo botle ba flexural (300– 500 MPa), le ho tiea ho babatsehang (Young’s modulus ea ~ 380 GPA), ho ba lumella ho ema ho kenya letsoho ka matla ntle le ho ferekana ka polasetiki.
Le hoja ka tlhaho e fokola ha e bapisoa le litšepe, Khohlano ea bona e fokotsehileng le ho tiea holimo holimo li fokotsa bond le litheko tse tlase tsa ho roala ka liodara tsa boholo bo amanang le mefuta e meng ea tšepe kapa polymer..
Thermally, alumina e boloka botsitso ba meralo joalo ka 1600 ° C libakeng tse nang le oxidizing, ho lumella ho sebelisoa libakeng tse nang le mocheso o phahameng joalo ka lisistimi tsa lijo tsa kiln, ducting ea boiler e futhumatsang bohareng, le lisebelisoa tsa pyroprocessing.
( Alumina Ceramic Wear Liner)
Coefficient ea eona e tlase ea kholo ea mocheso (~ 8 × 10 ⁻⁶/ K) e eketsa ts'ireletseho ea mahlakoreng ho pholletsa le libaesekele tse futhumetseng, ho fokotsa tshoso ya ho petsoha ka baka la ho tshoha ha mocheso ha ho kentswe ka nepo.
Holim'a moo, alumina e sireletsa motlakase 'me e kenella ka lik'hemik'hale ho li-acid tse ngata, alkalis, le solvents, ho etsa hore e be sebaka se loketseng sepakapaka se senyang moo lithapo tsa tšepe li neng li tla senyeha ka potlako.
Mehaho ena e kopaneng ea bolulo kapa ea khoebo e etsa hore lirafshoa tsa alumina li phethahale bakeng sa ho sireletsa lisebelisoa tsa bohlokoa merafong, tlhahiso ea matla, tlhahiso ea samente, le limmaraka tsa ho lokisa lik'hemik'hale.
2. Mekhoa ea Tlhahiso le Mekhoa ea ho Kopanya Setaele
2.1 Ho bopa, Sintering, le Melao ea Taolo ea Boleng
Tlhahiso ea li-liner tsa alumina ceramic wear liners e kenyelletsa tatellano ea mehato e nepahetseng ea tlhahiso e ntlafalitsoeng ho fihlela botenya bo phahameng, porosity e nyane haholo, le ts'ebetso e tloaelehileng ea mochini.
Li-alumina powders tse tala li sebetsoa ka ho sila, granulation, le ho hlahisa mekhoa e kang ho sututsa ka ho omella, ho sututsa ka isostatic, kapa extrusion, ho itšetlehile ka geometry e batloang– lithaele tsa ceramic, lipoleiti, liphaephe, kapa mafapha a sebopeho se ikhethileng.
'Mele o motala o sintered ka mocheso pakeng tsa 1500 ° C le 1700 ° C moeeng, ho khothaletsa tšubuhlellano ka pherekano ea boemo bo tiileng le ho fihlela sets'oants'o sa litho tsa lelapa ho feta 95%, e atamela hangata 99% ya botenya ba thuto.
Ho bohlokoa ho kopanya ka botlalo, kaha porosity e iphetang e sebetsa joalo ka khatello ea maikutlo le khatello ea maikutlo 'me e eketsa ho roala le ho robeha tlas'a maemo a ts'ebeletso.
Ts'ebetso ea ka mor'a sintering e ka kenyelletsa ho sila kapa ho hlatsoa litaemane e le hore ho be le likhahla tse fokolang le liphahlo tse boreleli tse fokotsang ho phunya le ho phunya likaroloana..
Sehlopha se seng le se seng se feta ho netefatso ea boleng bo tiileng, e nang le phallo ea X-ray (XRD) bakeng sa tlhahlobo ea sethala, ho hlahloba microscope ea elektronike (TSEBANG) bakeng sa tlhahlobo ea microstructural, le teko ea ho tiea le ho kobeha ho netefatsa ho ikamahanya le maemo a lefats'e joalo ka ISO 6474 kapa ASTM B407.
2.2 Ho Beha Maqheka le Lintlha tsa Tšebelisano ea Sisteme tse lokelang ho nahanoa
Motsoako o nepahetseng oa li-liner tsa alumina ho lisebelisoa tsa khoebo o hloka ho tsepamisoa ka hloko ho tlatsetso ea mochini le ho tsamaellana ha mocheso..
Mekhoa e tloaelehileng ea ho kenya e kenyelletsa ho kopanya sekhomaretsi ho sebelisa li-epoxies tsa ceramic tse matla haholo, ho tiisa ka metjhini ka dithupa kapa liankora, le ho kenella ka har'a matrices a refractory.
Likopano tse khomarelang hangata li sebelisoa bakeng sa maemo a holimo kapa a kobehileng hamonate, e fanang ka phallo e tsitsitseng ea ho tšoenyeha le ho fokotsa ho sisinyeha, ha li-stud-mounted systems li lumella hore ho be bonolo haholo ho nkela sebaka 'me li khethoa libakeng tse nang le tšusumetso e phahameng.
Ho amohela katoloso e fapaneng ea mocheso lipakeng tsa alumina le li-metallic substratum (mohlala, tšepe ea carbon), dibaka tse entsoeng, sekgomaretsi se tenyetsehang, kapa li-underlayers tse netefalitsoeng li kenyellelitsoe ho thibela delamination kapa ho robeha ho pholletsa le nako ea mocheso.
Bahlahisi ba boetse ba tlameha ho nahana ka ts'ireletso ea moeli, kaha lithaele tsa fatše tsa ceramic li tloaetse ho petsoha metseng e pepeneneng; litharollo li kenyelletsa mahlakore a diagonal, masela a tshepe, kapa tlhophiso ea lithaele tse tsamaellanang.
Ho seta ka nepo ho etsa hore nako e telele ea bophelo e be teng 'me ho eketsa ts'ebetso ea ts'ireletso ea sistimi ea lesela.
3. Beha Litsamaiso le Tekolo ea Ts'ebetso ho Tikoloho ea Ts'ebeletso
3.1 Ho hanyetsa ho Abrasive, Erotsehang, le Tšusumetso Loading
Alumina ceramic wear linings master atmospheres e busoang ke 3 mekhoa e meholo ea ho apara: ho hlaba mmele tse pedi, ho phunya mmele e meraro, le khoholeho e nyane.
Ka ho hlaba 'mele e 'meli, likotoana tse thata kapa bokaholimo bo kokota ka kotloloho bokaholimo ba liner, ketsahalo e tlwaelehileng ya dichute, hoppers, le lichifi tsa conveyor.
Abrasion ea 'mele e meraro e kenyelletsa likhechana tse lokolotsoeng tse kentsoeng lipakeng tsa lesela le sehlahisoa se fallisitsoeng., ho lebisa ketsong ya ho bidika le ho ngoapa e tlosang ntho butle.
Ho roala ha abrasive ho etsahala ha likaroloana tsa lebelo le phahameng li otla sebaka se ka holimo, ka ho khetheha methapong e tsamaisang moea ka moea le likarohano tsa leholiotsoana.
Ka lebaka la ho tiea ha eona ho phahameng le ho tšoarella ha eona ho tlase, alumina e sebetsa hantle haholo ka phello e tlase, maemo a phahameng a abrasion.
E sebetsa hantle haholo khahlano le ores siliceous, mashala, fofa molora, le klinka ea konkreite, moo litheko tsa liaparo li ka fokotsoang ka 10– 50 linako tse bapisoang le lilara tsa tšepe tse bonolo.
Leha ho le joalo, lits'ebetsong tse kenyelletsang matla a matla a kopitsoang, joalo ka likamore tsa li-key crusher, Sistimi ea crossbreed e kopanyang lithaele tsa alumina le lithako tsa elastomeric kapa lithebe tsa tšepe hangata li sebelisoa ho thekesela le ho thibela ho phatloha..
3.2 Teko ea Sebaka, Tlhahlobo ea Potoloho ea Bophelo, le Ho hloleha Setting Evaluation
Tekolo ea katleho ea masela a aluminium ea ho roala e kenyelletsa tlhahlobo ea laboratori le tlhahlobo ea masimong.
Liteko tse emeng joalo ka tlhahlobo ea ASTM G65 ea lehlabathe le omeletseng la rabara e fana ka lintlha tse bapisoang tsa moaparo., athe lisebelisoa tse ikhethileng tsa khoholeho ea seretse li pheta maemo a ikhethileng a sebaka.
Libakeng tsa khoebo, sekhahla sa ho apara hangata se khethoa ka mm/selemo kapa g/kWh, ka likhakanyo tsa nako ea bophelo tse ipapisitseng le bongata ba pele le tšenyeho.
Mefuta e hlolehang e kenyelletsa ho hola holimo, micro-cracking, ho qhala ka mathoko, le ho tlosoa ka ho feletseng ha lithaele tsa ceramic ka lebaka la ho senya sekhomaretsi kapa ho imeloa ke mechine.
Tlhahlobo ea mohloli hangata e senola liphoso tsa ho kenya, khetho ea boleng bo sa lokelang, kapa litlamorao tse sa lebelloang e le bathusi ba mantlha ba ho se atlehe pele ho nako.
Tekolo ea theko ea potoloho ea bophelo e lula e bontša seo ho sa tsotellehe litšenyehelo tse kholo tsa pele, li-alumina liner li fana ka litšenyehelo tse felletseng tsa thepa ka lebaka la nako e telele ea ho nchafatsa, nako e fokotsehileng, le ho fokotsa mosebetsi oa boipheliso.
4. Likopo tsa Liindasteri le Tsoelo-pele ea Theknoloji ea Bokamoso
4.1 Phethahatso e Ikhethileng ea Lekala ho pholletsa le Liindasteri tse Boima
Li-liner tsa alumina ceramic li romelloa ho pholletsa le mebaraka e mengata ea khoebo moo ho senyeha ha thepa ho hlahisang mathata a sebetsang le a lichelete..
Ts'ebetsong ea merafo le lirafshoa, li sireletsa li-chutes tsa ho fetisa, leloala linings, hydrocyclones, le lipompo tsa slurry tse tsoang ho li-slurries tse sa thabiseng tse nang le quartz, hematite, le liminerale tse ling tse thata.
Setsing sa matla a nyutlelie, lithaele tsa alumina ceramic line mashala pulverizer moea ducts, li-boiler tse futhumatsang tse bohareng, and electrostatic precipitator parts revealed to fly ash erosion.
Cement producers utilize alumina liners in raw mills, kiln inlet areas, and clinker conveyors to battle the very abrasive nature of cementitious materials.
The steel market uses them in blast furnace feed systems and ladle shrouds, where resistance to both abrasion and moderate thermal tons is vital.
Also in much less conventional applications such as waste-to-energy plants and biomass handling systems, alumina porcelains provide durable security against chemically aggressive and fibrous materials.
4.2 Emerging Patterns: Compound Systems, Smart Liners, and Sustainability
Current study focuses on enhancing the strength and functionality of alumina wear systems through composite design.
Alumina-zirconia (Al ₂ O ₃-ZrO ₂) metsoako e nka monyetla oa ho matlafatsa makeover ho tloha zirconia ho ntlafatsa khanyetso ea crack, ha alumina-titanium carbide (Al ₂ O ₃-TiC) litšoaneleho li fana ka ts'ebetso e ntlafetseng ea liaparo tse tsamaeang ka mocheso o phahameng.
Ntho e 'ngoe e ncha e kenyelletsa ho kenya lisebelisoa tsa ho lemoha ka hare kapa ka tlas'a lirala tsa ceramic ho hlahloba tsoelo-pele ea ho apara., mocheso, le ho susumetsa khafetsa– e nolofalletsang tlhokomelo e lebelletsoeng le ho ts'oaroa habeli ha elektroniki.
Ho tloha ponong ea ts'ebetso, bophelo bo bolelele ba ts'ebeletso ea li-alumina liner bo theola tšebeliso ea thepa le tlhahiso ea litšila, ho ikamahanya le mehopolo ea moruo oa selikalikoe ts'ebetsong ea indasteri.
Ho sebelisoa bocha ha masela a letsopa a sebelisitsoeng ka har'a li-aggregatory kapa thepa ea moaho le hona ho ntse ho fumanoa ho fokotsa sebaka sa tikoloho..
Qetellong, lisebelisoa tsa alumina tsa ceramic li emela lejoe la sehlooho la theknoloji ea sejoale-joale ea ts'ireletso ea liindasteri.
Boima ba bona bo makatsang, tshireletso ya mocheso, le inertness ea lik'hemik'hale, e kopantsoe le mekhoa ea tlhahiso le ho seta e hōlileng ka ho feletseng, etsa hore e be tsa bohlokoa ho loants'eng ho senyeha ha lihlahisoa ho pholletsa le liindasteri tse boima.
Ha mahlale a lihlahisoa a ntse a tsoela pele le tlhahlobo ea dijithale e ntse e kopanngoa haholoanyane, moloko o latelang wa masene, Lisistimi tse hanyetsanang tse thehiloeng ho alumina ka sebele li tla matlafatsa ts'ebetso le ts'ebetso e tsitsitseng maemong a sa thabiseng.
Morekisi
Alumina Technology Co., Ltd e shebane le lipatlisiso le nts'etsopele, tlhahiso le thekiso ea phofo ea aluminium oxide, lihlahisoa tsa aluminium oxide, aluminium oxide crucible, etc., ho sebeletsa lisebelisoa tsa elektroniki, li-ceramics, liindasteri tsa lik'hemik'hale le tse ling. Ho tloha ha e thehoa ka 2005, k'hamphani e ikemiselitse ho fa bareki lihlahisoa le litšebeletso tse ntle ka ho fetisisa. Haeba u batla boleng bo phahameng aluminium al2o3, ka kopo ikutloe u lokolohile ho ikopanya le rona. ([email protected])
Li-tag: Alumina Ceramic Wear Liner, Alumina Ceramics, aluminium
Lingoliloeng tsohle le litšoantšo li tsoa Marang-rang. Haeba ho na le litaba tsa copyright, ka kopo ikopanye le rona ka nako ho hlakola.
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