1. Ka'idodin Samfur da Halayen Ƙaramin Ƙirar Ƙira
1.1 Tsari da Halayen Crystallographic na Al ₂ O BIYAR
(Alumina Ceramic Balls， Alumina Ceramic Balls)
Alumina yumbu ƙwallaye abubuwa ne masu sassauƙa waɗanda aka yi daga allumina oxide mai nauyi (Al ₂ O SIX), a gaba daya oxidized, yumbu polycrystalline wanda ke nuna ƙarfin gaske, sinadaran rashin aiki, da kwanciyar hankali thermal.
Babban matakin crystalline a cikin manyan ƙwallan alumina shine α-alumina, wanda ya ƙunshi tsarin corundum-nau'in hexagonal kusa da cushe inda ions aluminum masu nauyi ke zaune kashi biyu bisa uku na tsakar octahedral a cikin lattice oxygen anion., yana ba da babban ƙarfin latticework da juriya ga matakin gyara.
Kwallan alumina masu darajar masana'antu gabaɗaya sun haɗa da 85% ku 99.9% Al Biyu YA BIYAR, tare da tsabta kai tsaye yana shafar ƙarfin injin, saka juriya, da ingancin lalata.
Halaye masu tsabta (≥ 95% Al ₂ O BIYAR) suna sintered zuwa kusa-kauri kauri (> 99%) ta amfani da ci-gaba dabarun kamar sintering mara matsi ko dimi isostatic turawa, rage girman porosity da matsalolin intergranular waɗanda zasu iya aiki azaman abubuwan damuwa.
Sakamakon microstructure ya ƙunshi lafiya, daidaitattun hatsi iri ɗaya tarwatsa cikin ƙarar, tare da girman hatsi gabaɗaya ya bambanta daga 1 ku 5 micrometers, haɓakawa don daidaita ƙarfi da ƙarfi.
1.2 Bayanan Injini da Jiki
Alumina yumbura zagaye sun shahara saboda tsananin ƙarfinsu– an ƙaddara a kusa da 1800– 2000 HV akan sikelin Vickers– ya zarce mafi yawan karafa da kishiyantar tungsten carbide, sa su dace da yanayin da ba su da ƙarfi.
Karfinsu na matsawa (har zuwa 2500 MPa) yana tabbatar da tsaro mai girma a ƙarƙashin kaya, yayin da rage m contortion boosts daidaici a mirgina da nika aikace-aikace.
Duk da raunin su dangane da karafa, zagaye na alumina suna nuna taurin karye na musamman don yumbu, musamman a lokacin da ake sarrafa ci gaban hatsi a duk lokacin da ake yin sintiri.
Suna adana gaskiyar tsari a ko'ina cikin babban matakin matakin zafin jiki, daga matsalolin cryogenic kamar yadda 1600 ° C a cikin yanayi na oxidizing, nisa ya zarce iyakar zafin zafi na polymer ko ƙarfe daidai.
Bugu da kari, low thermal fadada coefficient (~ 8 × 10 ⁻ / K) yana rage raunin girgiza thermal, ba da damar amfani a cikin saurin canza yanayin yanayin zafi kamar kilns da masu musayar zafi.
2. Hanyoyin Ƙirƙira da Kula da Inganci
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2.1 Dabarun Ƙirƙira da Ƙira
Samar da sassan yumbura na alumina yana farawa da tsaftataccen foda alumina, yawanci ya samo asali ne daga bauxite calcined ko sinadarai masu hazo, wanda aka grated don cika submicron bit size da siriri girma rarraba.
Ana yin foda bayan haka an ƙirƙira su cikin jikin da ke da alaƙa da muhalli ta hanyar amfani da hanyoyin kamar extrusion-spheronization, fesa bushewa, ko yanki mai tasowa a cikin juya kwanon rufi, dogara ga girman da ake so da saita iyaka.
Bayan yin siffa, Spheres-friendly eco suna aiwatar da matakin gajiyarwa wanda ke biye da yanayin zafi mai zafi., yawanci tsakanin 1500 ° C da 1700 ° C, inda tsarin watsawa ke fitar da ɗimbin yawa da sarrafa hatsi.
Musamman iko na sintering yanayi (iska ko sarrafa iskar oxygen part danniya), farashin dumama gida, kuma lokacin zama yana da mahimmanci don samun raguwar uniform, zagaye na geometry, da lahani na ciki.
Don aikace-aikace masu girman gaske, bayan-sintering hanyoyin kwantar da hankali kamar zafi isostatic turawa (HIP) za a iya sa a kawar da ragowar microporosity da kuma kara inganta ingantattun injiniyoyi.
2.2 Daidaiton Ƙarshen Ƙarfafawa da Tabbacin Sauraron Jiki
Mance da sintering, Zagayen alumina suna ƙasa kuma suna haskakawa ta amfani da kafofin watsa labaru masu lu'u-lu'u don cimma tsayin daka mai ƙarfi da rigunan yanki mai kama da ƙwallayen ƙarfe masu ɗaukar nauyi..
Ana raguwa da ƙaƙƙarfan yanki zuwa ƙasa da yawa 0.05 mun Ra, rage girman gogayya da lalacewa a cikin yanayin kira mai fa'ida.
Mahimman ma'auni na ingancin inganci sun ƙunshi sphericity (rashin daidaituwa daga kyakkyawan satiation), bambancin diamita, saman kwanciyar hankali, da kauri uniformity, kowanne daga cikinsu an ƙaddara yin amfani da interferometry na gani, daidaita kayan aikin tantancewa (CMM), da Laser profilometry.
Matsayi na duniya kamar ISO 3290 da ANSI/ABMA sun ƙididdige maki juriya don sassan yumbu da aka yi amfani da su a cikin bearings, yana ba da garantin musanyawa da daidaiton aiki a cikin masu samar da kayayyaki.
Dabarun gwaji marasa lalacewa kamar ƙima na ultrasonic ko X-ray microtomography ana amfani da su don gano fasa cikin ciki, gibi, ko kari wanda zai iya lalata dogaro mai dorewa.
3. Fa'idodi Masu Aiki Akan Ƙarfe da Ƙarfe na Polymer
3.1 Tsatsa da Tsatsa a cikin Muhalli masu tsanani
Ɗaya daga cikin mafi girman fa'idodin ƙwallan yumbura alumina shine mafi girman juriya ga harin sinadarai..
Suna ci gaba da kasancewa marasa ƙarfi a cikin wanzuwar tsayayyen acid (sai dai hydrofluoric acid), antacid, kwayoyin kaushi, da zaɓuɓɓukan saline, sanya su dacewa don amfani da su wajen sarrafa sinadarai, masana'antar harhada magunguna, da aikace-aikacen ruwa inda kayan aikin karfe zasu lalace da sauri.
Wannan rashin aiki yana hana gurbatar kafofin watsa labarai masu mahimmanci, muhimmin abu a sarrafa abinci, Semiconductor ƙirƙira, da na'urorin likitanci.
Sabanin zagaye na karfe, alumina baya haifar da lalata ko ions na ƙarfe, tabbatar da tsaftataccen tsari da rage yawan tabbatarwa.
Yanayin su wanda ba na maganadisu ba ya fi dacewa da amfani ga na'urorin da suka dace da MRI da layukan taro na dijital inda ake buƙatar tsangwama na maganadisu a sarari..
3.2 Yi amfani da Resistance da Dogon Sabis
A abrasive ko high-cycle settings, alumina yumbu spheres suna baje kolin odar ƙima na girman ƙasa da zaɓin ƙarfe ko polymer.
Wannan gagarumin ɗorewa yana jujjuya kai tsaye zuwa tazarar mafita, rage raguwa, da ƙananan farashin mallaka ba tare da la'akari da mafi girman farashin sayan farko ba.
Ana amfani da su sosai azaman kafofin watsa labarai na niƙa a cikin injin zagaye don tarwatsa pigment, sarrafa ma'adinai, da kuma nanomaterial kira, inda rashin jin daɗin su yana hana gurɓatawa kuma ƙarfin su yana tabbatar da rage girman girman barbashi.
A cikin hatimi na injiniya da sassan bawul, zagayen alumina suna kiyaye iyakacin haƙuri akan zagayowar ƙirƙira, tsaye har zuwa tarwatsewa daga ruwa mai ɗauke da ɗimbin yawa.
4. Masana'antu da Tashe Aikace-aikace
4.1 Abun ciki, Kashewa, da Tsarin Gudanar da Liquid
Alumina yumbura spheres ba makawa ne ga matasan sphere bearings, inda aka haɗe su da tseren ƙarfe ko silicon nitride don haɗa ƙarancin ƙarancin ƙarfi da tsatsa na yumbu tare da taurin ƙarfe.
Ƙananan kauri (~ 3.9 g/cm BIYU, game da 40% mai sauƙi fiye da karfe) yana rage lodin centrifugal a babban saurin juyawa, yana ba da damar aiki da sauri da sauri tare da rage yawan dumama da haɓaka tasirin kuzari.
Ana amfani da irin waɗannan bearings a cikin igiyoyi masu sauri, hakori handpieces, and aerospace systems where dependability under severe conditions is vital.
In fluid control applications, alumina balls work as check shutoff elements in pumps and metering devices, specifically for aggressive chemicals, high-purity water, or ultra-high vacuum systems.
Their smooth surface and dimensional security guarantee repeatable securing efficiency and resistance to galling or taking.
4.2 Likitan halittu, Makamashi, and Advanced Modern Technology Uses
Past standard industrial roles, alumina ceramic rounds are locating usage in biomedical implants and analysis equipment because of their biocompatibility and radiolucency.
They are used in man-made joints and dental prosthetics where wear particles have to be decreased to stop inflammatory feedbacks.
In power systems, suna aiki azaman inert tracers a cikin yanayin tanki na ajiya ko azaman abubuwan da ke da ƙarfi a cikin abubuwan da aka mayar da hankali kan makamashin hasken rana da tasoshin iskar gas..
Binciken bincike shima yana duba ƙwallan alumina da aka yi aiki don tallafi mai ƙarfi, abubuwan da aka gano naúrar, da daidaitattun ma'auni a cikin faɗin.
a takaice, Kwallan yumbu na alumina suna nuna yadda sabbin yumbura ke danganta tazarar da ke tsakanin taurin tsari da daidaitaccen aiki..
Haɗin ƙarfi ɗaya-na-a-irin su, sinadaran rashin aiki, thermal tsaro, da daidaiton girma ya sa su zama manyan mashahuran tsarin injiniya a sassa daban-daban.
Kamar yadda fasahar masana'anta ta kasance don ingantawa, Ana sa ran ingancinsu da iyakar aikace-aikacen su zai ƙaru da kyau zuwa fasahohin zamani masu zuwa.
5. Mai bayarwa
Advanced Ceramics kafa a Oktoba 17, 2012, babban kamfani ne na fasaha mai himma ga bincike da haɓakawa, samarwa, sarrafawa, tallace-tallace da sabis na fasaha na kayan dangi na yumbu irin su Alumina Ceramic Balls. Kayayyakinmu sun haɗa amma ba'a iyakance ga samfuran yumbura na Boron Carbide ba, Boron Nitride Ceramic Products, Silicon Carbide Ceramic Products, Silicon Nitride Ceramic Products, Zirconium Dioxide Ceramic Products, da dai sauransu. Idan kuna sha'awar, don Allah a ji daɗin tuntuɓar mu.([email protected])
Tags: alumina bukukuwa,alumina bukukuwa,alumina yumbu bukukuwa
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