1. Ihe ndị bụ isi na atụmatụ Microstructural nke Alumina Ceramics
1.1 Ihe mejupụtara, Ogo ịdị ọcha, na ebe obibi Crystallographic
(Alumina Ceramic Wear Liners)
Alumina (Al ₂ O anọ), ma ọ bụ aluminum oxide, bụ otu n'ime ihe ndị a na-eji seramiki teknụzụ eme ihe n'ichepụta ụlọ ọrụ n'ihi nnukwu nguzozi nke ume ọrụ ya., kemịkalụ kwụsie ike, na ọnụ ahịa bara uru.
Mgbe etinyere ya ozugbo na wear liners, A na-emepụta seramiki alumina na ọkwa ịdị ọcha sitere na 85% ka 99.9%, na ịdị ọcha dị elu dabara na nkwụsi ike gbagoro agbago, tinye nguzogide, na thermal arụmọrụ.
Usoro kristal na-eduga bụ alfa-alumina, nke na-anabata ihe nwere akụkụ hexagonal (HCP) usoro akọwara site na ionic siri ike na njikọ covalent, na-agbakwụnye ihe na-agbaze ya dị elu (~ 2072 Celsius C )na ala thermal conductivity.
Microstructurally, alumina poselin nwere ezigbo mma, A na-ahazi ọka ndị equiaxed nke a na-ahazi nha na mgbasa ozi ya n'oge niile iji bulie ụlọ obibi ma ọ bụ azụmahịa..
Akụkụ ọka na-adịkarị site na submicron ruo ọtụtụ micrometers, na ọka ndị ka mma na-ebuli ike mgbaji mgbaji na iguzogide mmụba mgbawa n'okpuru mkpọ abrasive..
Obere ihe ndị dị ka magnesium oxide (MgO) A na-ewebatakarị ya na mkpokọta ọnụọgụ iji gbochie uto ọka na-adịghị mma n'oge ọ bụla na-ekpo ọkụ, ijide n'aka na microstructure na-agbanwe agbanwe na nchekwa akụkụ.
Ngwaahịa a rụpụtara na-egosipụta nkwụsi ike Vickers nke 1500– 2000 HV, nke ukwuu karịa nke ígwè siri ike (n'ozuzu 600– 800 HV), na-eme ka ọ bụrụ ihe na-adịghị ahụkebe na mbibi elu ala na ntọala akwa akwa.
1.2 Nrụ ọrụ igwe na ọkụ ọkụ na ọnọdụ ụlọ ọrụ
A na-ahọrọ akwa mkpuchi seramiiki alumina nke ukwuu maka nguzogide ha pụrụ iche na-adịghị mma, abrasive, na gliding yi usoro a na-ahụkarị na nnukwu ihe na-elekọta sistemu.
Ha nwere nnukwu mkpakọ ike (ihe dị ka 3000 MPa), ezigbo ike mgbanwe mgbanwe (300– 500 MPa), na ezigbo rigidity (Module ntorobịa nke ~ 380 GPA), na-ahapụ ha ka ha guzoro n'ibu ibu ọrụ siri ike na-enweghị contortion plastik.
Ọ bụ ezie na e nwere ike ịdị ike tụnyere ígwè, Mbelata ọnụ ọgụgụ esemokwu ha na nkwụsi ike elu elu na-ebelata ntakịrị njikọ na ọnụ ahịa ejiji dị ala site n'iwu nke ịdị ukwuu metụtara ígwè ma ọ bụ ihe ndị ọzọ dabere na polymer..
Igwe ọkụ, alumina na-edobe nkwụsi ike ụkpụrụ ụlọ dị ka 1600 Celsius C na ikuku oxidizing, na-enye ohere iji na gburugburu ebe obibi na-ekpo ọkụ dị elu dị ka usoro nri kiln, Central kpo oku ji esi mmiri ọkụ ducting, na pyroprocessing ngwaọrụ.
( Alumina Ceramic Wear Liners)
Ọnụego uto nke okpomọkụ dị ala (~ 8 × 10 ⁻ / K) na-agbakwunye na nchekwa akụkụ n'oge ịgba ígwè ọkụ, ibelata ihe iyi egwu nkewa n'ihi ujo ọkụ mgbe etinyere ya nke ọma.
Na mgbakwunye, alumina na-ekpuchi ọkụ eletrik na kemịkalụ inert nye ọtụtụ acid, alkalis, na ihe mgbaze, na-eme ka ọ bụrụ ebe dị mma maka ikuku na-emebi emebi ebe ihe mkpuchi ọla ga-akawanye njọ ngwa ngwa.
Ihe ndị a jikọtara ọnụ ma ọ bụ ụlọ ahịa na-eme ka ceramik alumina zuru oke maka ichekwa ụlọ ọrụ dị mkpa na Ngwuputa, ike mmepụta, mmepụta ciment, na ahịa nhazi kemịkalụ.
2. Usoro mmepụta na ụzọ njikọta ụdị
2.1 Ịkpụzi, Na-egwu egwu, na Usoro njikwa ogo
Mmepụta nke alumina seramiiki wear liners gụnyere usoro nke usoro mmepụta nke ọma emepụtara iji nweta oke dị elu., obere porosity, na ịrụ ọrụ igwe mgbe niile.
A na-esi n'egwe ọka na-edozi ntụ ntụ alumini nke raw, granulation, na usoro mmepe dị ka ịkwanye nkụ, isostatic pushing, ma ọ bụ extrusion, dabere na geometry achọrọ– seramiiki tile, efere, ọkpọkọ, ma ọ bụ ngalaba na-eme omenala.
A na-agbanyezi ozu ndụ ndụ na okpomọkụ dị n'etiti 1500 Celsius C na 1700 Celsius C na ikuku, na-akwalite densification na mgbasa steeti siri ike na imezu njupụta ndị otu ezinụlọ na-agabiga 95%, na-abịakarị nso 99% nke agụmakwụkwọ ọkpụrụkpụ.
Njupụta zuru oke dị mkpa, dị ka porosity ugboro ugboro na-arụ ọrụ dị ka nrụgide na nchekasị na-atụgharị uche ma na-abawanye iyi na mgbaji n'okpuru ọnọdụ ọrụ.
Arụmọrụ post-sintering nwere ike ịgụnye egweri diamond ma ọ bụ ịsa ahụ iji nweta oke nguzogide akụkụ yana akwa mkpuchi dị larịị nke na-ebelata mkpocha na ọnyà irighiri..
Ogbe ọ bụla na-aga site na mmesi obi ike dị mma, nke mejupụtara X-ray diffraction (XRD) maka nlebanya ogbo, nyochaa eletrọn microscope (Kedu) maka nyocha microstructural, yana nnwale nkwụsi ike na ịgbagọ iji kwado nkwekọ n'ụkpụrụ zuru ụwa ọnụ dịka ISO 6474 ma ọ bụ ASTM B407.
2.2 Ịtụkwasị atụmatụ na ihe ndakọrịta sistemụ ị ga-atụle
Nchikota nke oma nke alumina wear liners n'ime ngwa ahia ahia choro nlebara anya nke oma na ntinye igwe na ndakọrịta mmeba ikuku..
Ụzọ ntinye nke a na-emekarị na-agụnye njikọ glu na-eji ike seramiki epoxies dị elu, nrụkọba ihe na studs ma ọ bụ arịlịka, na itinye n'ime matrices refractory castable.
A na-ejikarị njikọta nke nyapade mee ihe maka elu dị larịị ma ọ bụ jiri nwayọọ gbagọọ agbagọ, na-enye mgbasa ozi nchegbu na-agbanwe agbanwe na ịma jijiji, mgbe stud-ndokwasa usoro na-enye ohere nke ukwuu mfe dochie na-ahọrọ na elu-mmetụta zones.
Iji nabata mgbasawanye ọkụ dị iche n'etiti alumina na substratums ọla (eg, carbon ígwè), oghere arụpụtara, adhesives na-agbanwe agbanwe, ma ọ bụ agbakwunyere ihe mkpuchi n'okpuru iji gbochie delamination ma ọ bụ imebi n'oge oge okpomọkụ.
Ndị mmepe kwesịkwara ịtụle nchekwa ihu, dị ka seramiiki ala tile na-adịkarị mfe ịgbawa n'akụkụ ekpughere; ngwọta na-agụnye akụkụ diagonal, ihe mkpuchi ọla, ma ọ bụ nhazi tile na-ejikọta ọnụ.
Nhazi nke ọma na-eme ka ụfọdụ ogologo ndụ dị ogologo ma na-ebuli ọrụ nchebe nke usoro mkpuchi ahụ.
3. Tinye Sistemu na Ntụle arụmọrụ na gburugburu ọrụ
3.1 Nguzogide na Abrasive, erosive, na Mmetụta Loading
Alumina seramiiki wear linings nna ukwu ikuku na-achị 3 isi iyi usoro: abuo abrasion, atọ abrasion, na ntakịrị ozize.
Na abrasion nke abụọ, ibe n'ibe ma ọ bụ n'elu elu na-agbago ozugbo n'elu ala liner, ihe na-emebu na chutes, hopper, na mbugharị mgbanwe.
Abrasion nke anụ ahụ atọ gụnyere iberibe atọ tọgbọrọ chakoo n'etiti mkpuchi na mbugharị ngwaahịa., na-eduga n'ịtụgharị na ịcha ihe nke na-eji nwayọọ nwayọọ na-ewepụ ihe.
Abrasive yi na-eme mgbe ụmụ irighiri ihe dị elu na-adaba n'elu ala, kpọmkwem na ahịrị mbufe ikuku na-ebugharị na ihe nkesa cyclone.
N'ihi nkwụsi ike ya dị elu yana ogologo oge mgbape dị ala, alumina kacha arụ ọrụ na obere mmetụta, elu-abrasion ndapụta.
Ọ na-eme nke ọma karịa na siliceous ore, kol, ofufe utu, na ihe clinker, ebe enwere ike iwetu ọnụ ahịa uwe site na 10– 50 ugboro dị iche na obere ígwè liners.
Ka o sina dị, n'ime ngwa gụnyere mmetụta ume dị elu oyiri, dị ka ime ụlọ nhịahụ igodo, A na-ejikarị usoro crossbreed na-ejikọta taịlị alumina na nkwado elastomeric ma ọ bụ ọta ọla iji kpalite ujo ma gbochie mgbawa..
3.2 Nlele mpaghara, Nyocha okirikiri ndụ, na Ntụle Ntọala ọdịda
Ntụle arụmọrụ nke akwa mkpuchi alumina na-agụnye ma nyocha ụlọ nyocha yana nlekota ubi.
Nnwale ahaziri ahazi dị ka ASTM G65 akọrọ ájá akọrọ abrasion wheel na-enye ntụle nlegharị anya., ebe slurry mbuze gia ahaziri ahazi na-emegharị ọnọdụ saịtị akọwapụtara.
Na ntọala azụmahịa, A na-ekpebikarị ike eyi na mm/afọ ma ọ bụ g/kWh, na atụmatụ ogologo ndụ dabere na njupụta mbụ na mbibi hụrụ.
Ụdị ndị na-ada ada gụnyere mpụta elu elu, micro-na-agbawa, spalling na nsọtụ, na mkpofu tile seramiiki zuru oke n'ihi mbibi nke nrapado ma ọ bụ ibufe igwe.
Isi mmalite nyocha na-egosipụtakarị mmejọ nrụnye, nhọrọ àgwà na-ekwesịghị ekwesị, ma ọ bụ ibu mmetụta a na-atụghị anya ya dị ka ihe ndị bụ isi nyere aka na ọdịda akabeghị aka.
Ntụle ọnụahịa okirikiri ndụ na-egosipụtakarị nke ahụ n'agbanyeghị ọnụ ahịa mbụ ka ukwuu, Alumina liners na-enye ngụkọta ego nke ihe onwunwe dị ịrịba ama n'ihi nnukwu oge nnọchi, belata oge nkwụsị, na obere ọrụ nchekwa.
4. Ngwa ụlọ ọrụ mmepụta ihe na ọganihu teknụzụ n'ọdịnihu
4.1 Mmejuputa ngalaba-kpọmkwem n'ime ụlọ ọrụ dị arọ
A na-ebugharị ihe mkpuchi seramiiki alumina n'ofe ahịa azụmaahịa dị iche iche ebe mmebi ihe na-eweta nsogbu ọrụ yana nsogbu ego..
Na Ngwuputa na ịnweta njikwa, ha na-echebe chutes mbufe, igwe ihe lining, hydrocyclones, na nfuli slurry sitere na slurries na-adịghị mma nwere quartz, hematite, na mineral siri ike ndị ọzọ dị iche iche.
N'ụlọ ọrụ ike nuklia, alumina seramiiki tiles ahịrị coal pulverizer ikuku ducts, Central kpo oku ji esi mmiri ọkụ ash hoppers, na electrostatic precipitator akụkụ kpughere ofufe uyi ozize.
Ndị na-emepụta simenti na-eji alumina liner eme ihe n'ebe a na-emepụta ihe, ebe ịbata kiln, na ndị na-ebuga clinker na-alụ ọgụ maka ọdịdị abrasive nke ihe simenti.
Ahịa nchara na-eji ha eme ihe n'usoro nri ọkụ ọkụ yana akwa mkpuchi ladle, ebe iguzogide ma abrasion na oke ọkụ ọkụ dị oke mkpa.
Ọzọkwa n'ime ngwa ndị na-adịkarị obere dị ka osisi na-ekpofu ọkụ na sistemụ njikwa biomass, alumina poselin na-enye nchebe na-adịgide adịgide megide ihe ndị na-eme ihe ike na nke nwere ike.
4.2 Ụdị na-apụta: Ngwakọta sistemu, Smart Liners, na nkwado
Ọmụmụ ihe ugbu a na-elekwasị anya n'ịkwalite ike na ịrụ ọrụ nke sistemu alumina site na imepụta ihe mejupụtara.
Alumina-zirconia (Al ₂ O ₃-ZrO ₂) ogige na-eji ohere nke ime ka ike sie ike site na zirconia iji meziwanye nguzogide mgbape, mgbe alumina-titanium carbide (Al ₂ O ₃-TiC) Àgwà ndị a na-enye arụmọrụ ka mma na uwe na-akpụ akpụ na-ekpo ọkụ.
Otu ọhụrụ ọhụrụ gụnyere ịwụnye nkeji nleba anya n'ime ma ọ bụ n'okpuru seramiiki lining iji nyochaa ọganihu eyi, okpomọkụ, na mmetụta ugboro ugboro– na-enyere aka na-atụ anya mmezi na eletrọnịkị assimilation okpukpu abụọ.
Site na anya nkwado, ogologo ndụ ọrụ nke alumina liners na-ebelata oriri ihe onwunwe na mmepụta ihe mkpofu, aligning na okirikiri akụ echiche echiche na ulo oru arụmọrụ.
A na-achọpụtakwa imegharị ihe mkpuchi seramiiki emefuru ozugbo ka ọ bụrụ ihe na-agbanwe agbanwe ma ọ bụ ihe eji arụ ụlọ iji belata akara ukwu gburugburu ebe obibi..
N'ikpeazụ, alumina seramiiki wear lining na-anọchite anya isi okwute nke teknụzụ nchebe ụlọ ọrụ ọgbara ọhụrụ nke oge a.
Ha phenomenal ike isi ike, thermal nche, na chemical inertness, jikọtara na n'ụzọ zuru ezu toro n'ichepụta na ntọlite omume, mee ka ha dị mkpa n'ịlụso mmebi ngwaahịa ọgụ n'ofe ụlọ ọrụ siri ike.
Ka sayensị ngwaahịa na-aga n'ihu na nleba anya dijitalụ na-agbakwunyere, ọgbọ na-abịa nke amamihe, Sistemụ ndị dabere na alumina na-eguzogide ga-abawanye n'ihu arụmọrụ arụmọrụ yana nkwado na ikuku na-adịghị mma.
Onye nkesa
Ụlọ ọrụ Alumina Technology Co., Ltd., Ltd gbadoro anya na nyocha na mmepe, mmepụta na ire nke aluminom oxide ntụ ntụ, aluminum oxide ngwaahịa, aluminum oxide crucible, wdg., na-eje ozi na ngwá electronic, ceramik, chemical na ụlọ ọrụ ndị ọzọ. Kemgbe e guzobere ya na 2005, ụlọ ọrụ ahụ etinyela aka n'inye ndị ahịa ngwaahịa na ọrụ kacha mma. Ọ bụrụ na ị na-achọ elu mma alumina al2o3, biko nweere onwe gị ịkpọtụrụ anyị. ([email protected])
Tags: Alumina Ceramic Wear Liners, Alumina ceramik, alumina
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