Lehlabathe la Mullite
Tlhahisoleseding ya Sehlahiswa
Lehlabathe la Mulliteke aluminium silicate refractory material, e atisang ho sebelisoa ts'ebetsong e nepahetseng ea tšepe e sa hloekang. Refractoriness e ka bang likhato tse 1750. Ha boleng ba aluminium lehlabatheng la mullite bo phahame, bo tlase ba tšepe, 'me lerōle le le lenyenyane, boleng ba sehlahisoa sa lehlabathe la mullite bo betere. Lehlabathe la Mullite le entsoe ka ho chesoa ka mocheso o phahameng oa kaolin.
Likaroloana:
1. Sebaka se phahameng sa ho qhibiliha, ka kakaretso pakeng tsa 1750 le 1860°C.
2. Botsitso bo botle ba mocheso o phahameng.
3. Coefficient e tlase ea ho atolosa mocheso.
4. Botsitso bo phahameng ba lik'hemik'hale.
5. Kabo e utloahalang ea boholo ba likaroloana e lumella ho khetha le ho lokisoa ho itšetlehile ka mekhoa e fapaneng ea ho lahla le litlhoko tsa ho lahla.
Index ea Lihlahisoa
| Tlhaloso | Kereiti ea lijo tsa mantsiboea | Sehlopha sa 1 | Sehlopha sa 2 |
| Al2O3 | 44%-45% | 43%-45% | 43%-50% |
| SiO2 | 50%-53% | 50%-54% | 47%-53% |
| Fe2O3 | ≤1.0% | ≤1.5% | ≤2.1% |
| K2O+Na2O | ≤0.5% | ≤0.6% | ≤0.8% |
| CaO | ≤0.4% | ≤0.5% | ≤0.5% |
| TiO2 | ≤0.3% | ≤0.7% | ≤0.3% |
| Soda ea Xaustic | ≤0.5% | ≤0.5% | ≤0.7% |
| Boima ba Bongata | ≥2.5g/cm3 | ≥2.5g/cm3 | ≥2.45g/cm3 |
Lisebelisoa
Moko-taba oa ho lahla ka mokhoa o nepahetseng ke ho etsa likhetla tsa hlobo (mokhoa oa ho roala boka ba bokae ka likarolo tse ngata tsa lintho tse refractory ho etsa khetla e ka ntle. Ka mor'a hore mohlala oa boka o qhibilihe, ho etsoa sekoti bakeng sa ho tšela tšepe e qhibilihisitsoeng). Lehlabathe la Mullite le sebelisoa haholo-holo e le motsoako oa refractory ka har'a khetla ea hlobo 'me le sebelisoa likarolong tse fapaneng tsa khetla, haholo-holo ka tsela e latelang:
1. Surface Shell (E Ikhethela Ka ho Otloloha Boleng ba Bokaholimo ba ho Lahlela)
Mosebetsi:Lera le ka holimo le amana ka ho toba le ho lahla 'me le tlameha ho etsa bonnete ba hore ho na le sebaka se boreleli (ho qoba ho ba mahoashe le sekoti) ha se ntse se mamella tšusumetso ea pele ea tšepe e qhibilihisitsoeng.
2. Back Shell (E fana ka Matla ka Kakaretso le ho Phefumoloha)
Mosebetsi:Khetla e ka morao ke mohaho o nang le mekhahlelo e mengata ka ntle ho lera le ka holimo. E ts'ehetsa matla a kakaretso a khetla ea hlobo (ho thibela deformation kapa ho putlama nakong ea ho tšolloa) ha e ntse e netefatsa phefumoloho (ho ntša likhase ho tsoa ho sekoti le ho thibela porosity ho lahla).
3. Likopo tse Khethehileng bakeng sa Lits'oants'o tse Hlokang Haholo
Lisebelisoa tsa alloy tsa mocheso o phahameng:joalo ka li-blade tsa turbine tsa enjene ea sefofane (lithempereichara tse tšelang tsa 1500-1600 ° C), li hloka hore khetla ea hlobo e mamelle mocheso o feteletseng. Ho hanyetsa ho phahameng ha lehlabathe la Mullite ho ka nka sebaka sa lehlabathe la zircon le turang haholo (sebaka se qhibidihang sa 2550°C, empa se turu), se kopana le ditlhoko tsa ho hanyetsa mocheso o phahameng ha se ntse se fokotsa ditjeho.
Bakeng sa li-castings tsa tšepe tse sebetsang:tse kang li-alloys tsa aluminium le li-alloys tsa magnesium (tse sebetsang haholo 'me li itšoara habonolo le SiO₂ ka lehlabathe la quartz ho etsa li-inclusions), botsitso ba lik'hemik'hale tsa lehlabathe la mullite bo ka fokotsa ts'ebetso le ho thibela ho thehoa ha "oxidation inclusions" ho lahla.
Bakeng sa li-castings tse kholo tse nepahetseng:joalo ka li-gearbox tsa li-gearbox tsa moea (tse ka bang boima ba lithane tse 'maloa), khetla ea hlobo e hloka matla a phahameng a sebopeho. Lera le tšehetsang le entsoeng ka lehlabathe la mullite le binder le matla a holimo, le fokotsa kotsi ea ho atoloha ha hlobo le ho putlama.
4. Motsoako le Lisebelisoa tse ling tsa Refractory
Tlhahisong ea 'nete, lehlabathe la mullite hangata le sebelisoa hammoho le lisebelisoa tse ling ho ntlafatsa ts'ebetso ea khetla ea hlobo:
Ho kopanya le lehlabathe la zircon:lehlabathe la zircon le sebelisoa e le lera la holim'a metsi (ho etsa bonnete ba hore ho na le qetello e phahameng ea holim'a metsi) le lehlabathe la mullite e le lera le tšehetsang (ho fokotsa litšenyehelo). Sena se loketse li-castings tse nang le litlhoko tse holimo haholo, joalo ka likarolo tsa sefofane.
E kopantsoe le lehlabathe la quartz:Bakeng sa li-castings tse nang le litlhoko tse tlase tsa mocheso (joaloka koporo alloy, ntlha e qhibilihisang 1083 ℃), e ka nka sebaka sa lehlabathe la quartz ka mokhoa o itseng le ho sebelisa katoloso e tlase ea lehlabathe la mullite ho fokotsa mapetsong a khetla.
| Reference process For Precision Casting Shell Make | ||
| The kakaretso holim'a slurry, zirconium phofo | 325 mesh + silica Sol | Lehlabathe: lehlabathe la zirconium 120 mesh |
| Sekhahla se ka morao | 325 letlooeng+silika sol+mullite phofo 200 mesh | Lehlabathe: lehlabathe la mullite 30-60 mesh |
| Matlafatso lera | Mullite phofo 200 mesh + silica Sol | Lehlabathe: lehlabathe la mullite 16-30 mesh |
| Sehlahisoa sa ho tiisa | Mullite phofo 200 mesh + silica Sol | _ |
Boemo ba Khoebo
Shandong Robert New Material Co., Ltd.e sebakeng sa Zibo City, Profinseng ea Shandong, Chaena, e leng setsi sa tlhahiso ea lintho tse refractory. Re khoebo ea sejoale-joale e kopanyang lipatlisiso le nts'etsopele, tlhahiso, thekiso, moralo le kaho ea sebōpi, thekenoloji, le thepa ea ho rekisa kantle ho naha. Re na le lisebelisoa tse felletseng, theknoloji e tsoetseng pele, matla a matla a tekheniki, boleng bo botle ba sehlahisoa le botumo bo botle. Feme ea rona e na le lihekthere tse fetang 200 mme tlhahiso ea selemo le selemo ea thepa e bōpehileng joaloka lithane tse ka bang 30000 'me thepa ea refractory e sa bopehang ke lithane tse 12000.
Lihlahisoa tsa rona tse ka sehloohong tsa thepa ea refractory li kenyelletsa: lisebelisoa tsa alkaline refractory; lisebelisoa tsa aluminium silicon refractory; thepa e sa bōpehang refractory; lisebelisoa tse thibelang mocheso oa mocheso; thepa e khethehileng ea refractory; lisebelisoa tse sebetsang tsa refractory bakeng sa litsamaiso tse tsoelang pele tsa ho lahla.
Lipotso Tse Botsoang Hangata
U hloka thuso? Etsa bonnete ba hore u etela liforomo tsa rona tsa tšehetso bakeng sa likarabo tsa lipotso tsa hau!
Re moetsi oa 'nete, feme ea rona e khethehile ho hlahisa thepa ea refractory ka lilemo tse fetang 30. Re tšepisa ho fana ka theko e ntle ka ho fetisisa, tšebeletso e ntle ka ho fetisisa ea pele ho thekiso le ka mor'a ho rekisa.
Bakeng sa ts'ebetso e 'ngoe le e' ngoe ea tlhahiso, RBT e na le tsamaiso e feletseng ea QC bakeng sa metsoako ea lik'hemik'hale le thepa ea 'mele. 'Me re tla leka thepa,' me setifikeiti sa boleng se tla romelloa ka thepa. Haeba u na le litlhoko tse khethehileng, re tla leka ka hohle ho li amohela.
Ho itšetlehile ka bongata, nako ea rona ea ho fana e fapane. Empa re tšepisa ho romella kapele kamoo ho ka khonehang ka boleng bo tiisitsoeng.
Ha e le hantle, re fana ka mehlala ea mahala.
E, ehlile, o amohelehile ho etela k'hamphani ea RBT le lihlahisoa tsa rona.
Ha ho na moeli, re ka fana ka tlhahiso le tharollo e molemohali ho latela boemo ba hau.
Re 'nile ra etsa thepa ea refractory ka lilemo tse fetang 30, re na le tšehetso e matla ea tekheniki le phihlelo e ruileng, re ka thusa bareki ho rala li-kilns tse fapaneng le ho fana ka ts'ebeletso e le 'ngoe.
