Hauv kev tsim khoom, cov khoom siv refractory yog ib qho tseem ceeb ntawm kev tiv thaiv cov khoom siv thiab ua kom muaj kev tsim khoom tas mus li.Silicon carbide cib, nrog rau lawv zoo heev -kub kuj thiab hnav tsis kam, yog dav siv nyob rau hauv metallurgy, tshuaj engineering, tsev cov ntaub ntawv, thiab lwm yam teb. Txawm hais tias nws yog cov neeg ua haujlwm xaiv cov khoom siv lossis cov neeg ua haujlwm saib xyuas kev ua haujlwm txhua hnub, kev nkag siab txog cov yam ntxwv tseem ceeb thiab cov txuj ci zoo ntawm silicon carbide cib yog qhov tseem ceeb. Tsab ntawv xov xwm no yuav muab kev tshuaj xyuas dav dav ntawm cov txiaj ntsig zoo ntawm silicon carbide cib, los ntawm kev nkag siab yooj yim mus rau qhov tiag - ntiaj teb daim ntawv thov.
1.Dab tsi yog silicon carbide cib?
Silicon carbide cib yog cov khoom siv refractory ua los ntawm silicon carbide ua cov khoom siv tseem ceeb, ntxiv nrog cov av nplaum, oxides thiab lwm yam binders, los ntawm batching, molding thiab siab -kub sintering.
2.Core Qhov zoo ntawm Silicon Carbide Cib
Ntawm ntau cov ntaub ntawv refractory, qhov ua tau zoo ntawm silicon carbide cib yog tsis muaj xwm txheej. Lawv qhov tshwj xeeb zoo ncaj qha hais txog cov kev xav tau tseem ceeb ntawm kev tsim khoom lag luam, feem ntau hauv peb yam:
2.1 Lifespan Advantage
Raws li tib yam kev ua haujlwm, lub neej kev pab cuam ntawm silicon carbide cib feem ntau yog 3-5 npaug ntawm cov av nplaum cib thiab 2-3 npaug ntawm cov cib siab alumina. Kev siv lub tshuab hluav taws xob tapping trough hauv cov nroj tsuag steel ua piv txwv, cov cib refractory zoo tib yam yuav tsum tau hloov 1-2 zaug hauv ib lub hlis, thaum nrog silicon carbide composite bricks, lub voj voog hloov tau txuas ntxiv mus rau 6-12 lub hlis, uas tsis tsuas yog txo qis qis tab sis kuj txo cov khoom siv thiab nqi zog.
2.2 Zog-txuag qhov zoo
Nrog nws cov thermal conductivity zoo heev, silicon carbide cib tuaj yeem ua tiav qhov sib txawv ntawm qhov kub thiab txias hauv qhov cub, txo cov hluav taws xob pov tseg los ntawm qhov sib txawv ntawm qhov kub thiab txias. Tib lub sijhawm, lawv lub zog siab txo qhov cib tawg, tiv thaiv kom tsis txhob kub thaum hloov khoom. Cov ntaub ntawv qhia tau hais tias kev lag luam kilns siv silicon carbide cib tuaj yeem txo kev siv hluav taws xob los ntawm 10% -15%, ua raws li cov qauv tam sim no ntawm kev txuag hluav taws xob thiab kev txo qis hauv kev lag luam.
2.3 Adaptability Zoo
Silicon carbide cib tuaj yeem ua rau ntau hom khoom, xws li siab -purity silicon carbide cib, av nplaum-bonded silicon carbide cib, thiab oxide-bonded silicon carbide cib, los ntawm kev kho cov khoom siv raw thiab cov txheej txheem ntau lawm raws li kev ua haujlwm sib txawv. Lawv tsim nyog rau ntau yam xwm txheej xws li siab - qhov kub thiab txias oxidation ib puag ncig, muaj zog acid thiab muaj zog alkali ib puag ncig, thiab cov khoom siv cuam tshuam ib puag ncig, thiab lawv daim ntawv thov tau npog ntau yam lag luam xws li hlau, tshuaj, ceramics, iav, thiab tsis yog -ferrous hlau.
3.Practical Application Scenarios of Silicon Carbide Cib
Qhov kev ua tau zoo ntawm silicon carbide cib tsuas tuaj yeem ua tiav raws li kev ua haujlwm tshwj xeeb. Cov kev lag luam sib txawv muaj cov kev xav tau sib txawv, thiab yog li ntawd, kev xaiv ntawm silicon carbide cib kuj txawv. Hauv qab no yog qee qhov xwm txheej ntawm daim ntawv thov thiab cov lus pom zoo xaiv xaiv:
3.1 Metallurgical Industry: Impact Resistance thiab Corrosion Resistance yog cov tseem ceeb
Blast furnaces, converters, thiab hluav taws xob furnaces nyob rau hauv lub metallurgical kev lag luam ntsib high - kub yaig los ntawm molten hlau thiab hlau, raws li zoo raws li slag corrosion, tso siab heev xav tau kev pab cuam thiab corrosion kuj ntawm refractory ntaub ntawv. Hauv cov xwm txheej zoo li no, oxide-bonded silicon carbide cib yuav tsum tau ua ntej. Cov cib no siv cov oxides xws li alumina thiab magnesia ua binders los tsim cov qauv sintered ruaj khov ntawm qhov kub thiab txias, ua rau muaj zog corrosion kuj. Lawv yog cov tsim nyog rau cov khoom tseem ceeb xws li blast furnace tapholes, converter qhov ncauj, thiab hluav taws xob rauv phab ntsa.
3.2 Kev Lag Luam Tshuaj: Acid thiab Alkali Resistance thiab Stability yog cov kev xav tseem ceeb
Cov khoom siv hauv kev lag luam tshuaj, xws li cov hlab ntsha tawg, pyrolysis furnaces, thiab calcining furnaces, nquag tuaj rau hauv kev sib cuag nrog cov xov xwm corrosive xws li sulfuric acid, hydrochloric acid, thiab sodium hydroxide, thiab lawv cov kev khiav hauj lwm kub hloov pauv ntau. Nws raug nquahu kom siv siab -purity silicon carbide cib (silicon carbide cov ntsiab lus Ntau dua lossis sib npaug li 90%), vim tias lawv muaj cov tshuaj lom neeg muaj zog dua, tsis tshua muaj kev cuam tshuam nrog acidic lossis alkaline xov xwm, thiab muaj kev tiv thaiv zoo rau kev hloov kub ceev, tiv thaiv cib tawg.
3.3 Kev Lag Luam Cov Khoom Siv Hauv Tsev: Hnav Resistance thiab Uniform Heat Conductivity yog qhov xav tau
Hauv kev tsim cov khoom siv hauv tsev xws li ceramics thiab iav, cov txheej txheem xa tawm thiab tua hluav taws hauv qhov cub ua rau muaj kev cuam tshuam tsis tu ncua ntawm cov cib, thiab qhov ntsuas kub tsis sib xws yuav tsum ua kom cov khoom zoo. Av nplaum-bonded silicon carbide cib muab cov nqi siab- ua tau zoo, sib txuas cov hnav tsis kam thiab thermal conductivity, ua rau lawv tsim nyog siv rau hauv lub tsheb kiln platforms thiab cov menyuam conveyors nyob rau hauv ceramic kilns, nrog rau pub inlets nyob rau hauv iav kilns. Txoj kev no txo cov nqi thaum ua tau raws li qhov yuav tsum tau ua.
3.4 Tsis yog- ferrous hlau kev lag luam: kub tsis kam thiab tsis kam rau melting yog qhov tseem ceeb
Nyob rau hauv smelting ntawm non{0}}ferrous hlau xws li txhuas thiab tooj liab, qhov kub ntawm cov hlau molten tuaj yeem ncav cuag tshaj 1000 degree, uas tuaj yeem ua rau nkag mus thiab corrosion ntawm cov ntaub ntawv refractory. Hauv qhov no, nitride-bonded silicon carbide cib yuav tsum raug xaiv. Nrog silicon nitride raws li ib tug binder, lawv tsim ib tug ntom microstructure uas yuav zoo tiv thaiv kev nkag mus ntawm molten hlau. Nyob rau tib lub sijhawm, lawv muaj qhov ua tau zoo heev - qhov kub thiab txias thiab tuaj yeem siv rau hauv ob sab phlu thiab trough ntawm tsis yog -ferrous hlau smelting furnaces.
4. Cov lus qhia tswv yim rau Extending Lifespan ntawm Silicon Carbide Cib
High- zoo silicon carbide cib yuav raug kev puas tsuaj loj thiab lub neej luv yog tias lawv tsis siv thiab khaws cia kom zoo. Nov yog qee cov lus qhia ua haujlwm ua haujlwm:
4.1 Precise installation kom tsis txhob muaj qhov khoob:
Ua ntej kev teeb tsa, cov khib nyiab thiab plua plav ntawm qhov chaw ntawm cov khoom siv hauv ob sab phlu yuav tsum tau muab ntxuav kom ntseeg tau tias cov cib haum nruj nrog cov khoom siv. Thaum lub sij hawm cov txheej txheem masonry, qhov dav ntawm lub cib pob qij txha yuav tsum tau tswj nyob rau hauv 2-3mm thiab ntim nrog tshwj xeeb refractory mortar los tiv thaiv high-temperature media los ntawm seeping nyob rau hauv los ntawm lub qhov khoob thiab ua rau corrosion ntawm cov khoom siv hauv ob sab phlu.
4.2 Gradient cua sov los tiv thaiv lub cev cib:
Tom qab lub cub tawg tshiab tau muab tso rau hauv kev siv lossis silicon carbide cib hloov pauv, yuav tsum muaj txheej txheem cua sov gradient, maj mam nce qhov kub ntawm chav tsev mus rau qhov chaw ua haujlwm kub. Cov cua kub yuav tsum tau tswj ntawm 50-100℃/ h kom tsis txhob tawg vim qhov tsis sib xws ntawm thermal expansion thiab contraction ntawm cov cib los ntawm qhov kub thiab txias.
4.3 Kev tshuaj xyuas txhua hnub thiab ua haujlwm raws sijhawm:
Tsis tu ncua tshuaj xyuas qhov chaw ntawm silicon carbide cib. Yog tias pom qhov hnav hauv zos, tawg, lossis tev tawm, kho tam sim nrog cov khoom siv refractory. Yog tias qhov chaw puas tsuaj ntau tshaj 10%, hloov cov cib kom tsis txhob muaj kev puas tsuaj los ntawm kev sib kis thiab cuam tshuam rau cov khoom siv kev nyab xeeb.
4.4 Tsim nyog kaw los txo qhov poob:
Thaum kaw lub qhov cub, qhov kub thiab txias yuav tsum tau qis qis kom tsis txhob muaj qhov kub thiab txias tam sim ntawd. Tom qab kaw lub qhov cub, cov slag thiab tshauv ntawm qhov chaw ntawm lub cib yuav tsum tau muab ntxuav kom huv si lub sij hawm kom tsis txhob muaj cov xov xwm seem ntawm crystallizing ntawm lub cib thiab eroding lub cib qauv.
Silicon carbide cib, raws li ib qho tseem ceeb ntawm cov khoom siv refractory hauv kev tsim khoom, muaj txiaj ntsig tsis yog rau lawv cov kev ua tau zoo xwb tab sis kuj rau lawv cov kev xaiv meej, kev siv txuj ci, thiab kev saib xyuas tus qauv. Kev paub txog cov kev paub zoo saum toj no yuav tso cai rau koj kom ua tau zoo- qhia thaum yuav khoom lossis siv silicon carbide cib, kom ntseeg tau tias cov khoom tseem ceeb no ua tiav nws txoj haujlwm thiab tiv thaiv kev nyab xeeb thiab ua haujlwm zoo ntawm kev tsim khoom.