Thermal spalling kuj yog ib qho tseem ceeb rauRefractor Cibsiv nyob rau hauvCov Oxygen Furnaces(Bof), raws li cov cib no yuav tsum tau hloov kom sov thiab muaj kev ntxhov siab. Txhim kho lub thermal spalling kuj tseem tuaj yeem txhim kho lub durability thiab ua tau zoo ntawm cov haujlwm boo. Nov yog ob peb lub tswv yim kom ua tiav qhov no:
1. Optimizing microstructure
Lub microstructure ntawm refractory cib plays lub luag haujlwm tseem ceeb hauv lawv cov cua sov spalling kuj. Los ntawm kev ua kom zoo dua qhov kev faib tawm loj thiab kev npaj ntawm Mgo hais tawm, tsim ntawm cov txheej tiv thaiv me me tuaj yeem txhim kho. Qhov kev sib xyaw no inhibits cov tshuaj tiv thaiv ntawm MgG thiab Carbon, txo txoj kev pheej hmoo ntawm thermal spalling. Ib qho ntxiv, kev siv cov hmoov zoo xws li magnesite thiab alumina tuaj yeem nce spalling kev sib cav thiab txo porosity.
2. Txhim Kho Cov Hluav Taws Xob
Qhov kev sib ntxiv ntawm asphalt lossis suab tuaj yeem txhim kho cov carbon tsev neeg hauvMgo - C cibCov. Kev ua kom zoo nkauj thiab ua kom zoo nkauj ntawm asphalt thaum lub cev tua hluav taws, txo cov roj hmab ntawm cov roj hmab uas muaj zog ntawm cov roj hmab uas muaj zog. Hom no yog tshwj xeeb tshwj xeeb nyob rau hauv nruab nrab kub ntau yam, qhov twg thermal spalling yog feem ntau yuav tshwm sim.
3. Siv nano -} carbon additives
Incorporating nano {-} bevon carbon additive, tuaj yeem txhim kho lub thermal spalling kuj ntawm mgo- c refractory cib. Cov tshuaj sib ntxiv no tuaj yeem tsim cov tshuaj tsis zoo thiab cov teeb tsa microstructure, txhim kho lub cib lub peev xwm los tiv taus thermal poob siab. Nano {{{- Cov ntaub ntawv Carbon kuj tseem tuaj yeem txhim kho cov oxidation tsis kam ntawm cov cib, txuas ntxiv ua rau lawv lub siab.
4. Nce fracture toughness
Txhim kho cov pob txha lov ntawm refractory rab phom tuaj yeem pab cuam tshuam tsis txaus siab, uas yog thawj qhov ua rau muaj kev sib tw ntawm thermal. Cov tswv yim xws li kev txhawb nqa matrix thev naus laus zis ua rau muaj kev txhim kho kom loj dua, thiab kev teeb tsa {{1} {tus neeg tiv taus qauv. High bricure cov ntaub ntawv nyuaj tuaj yeem ua kom zoo dua rau cov neeg siv tshuab thiab cov cua sov kev ntxhov siab tau ntsib hauv kev ua haujlwm book.
5. Thov cov xim tiv thaiv tiv thaiv
Ua ntawv thov cov txheej txheem tiv thaiv mus rau saum npoo ntawm refractory cib tuaj yeem muab qhov kev cuam tshuam ntxiv rau lub thermal poob siab thiab tshuaj tua rog. Cov txheej txheej no tuaj yeem ua los ntawm cov ntaub ntawv xws li suab lossis tshwj xeeb refractory plastics, uas tuaj yeem txhim kho rau cov brick tsis kam rau oxidation thiab spalling. Cov Khaub Ncaws Tiv Thaiv kuj tseem tuaj yeem pab txo cov hnav los ntawm kev cuam tshuam kev cuam tshuam thaum lub caij bof.
