Taw qhia
Hauv kev lag luam metallurgical, kev siv cov ntaub ntawv zoo yog qhov tseem ceeb los xyuas kom meej cov khoom siv hlau thiab cov hlau ua tau zoo thiab txhim khu kev qha. Ntawm cov khoom siv ntau yam ua haujlwm, graphite crucibles tau txais txiaj ntsig tseem ceeb vim lawv cov khoom tshwj xeeb corrosion kuj. Kab lus no tshawb txog cov khoom tiv thaiv corrosion ntawmgraphite cruciblesthiab lawv lub luag haujlwm tseem ceeb hauv cov txheej txheem metallurgical.
Corrosion Resistance ntawmGraphite Crucibles
Graphite, ib daim ntawv ntawm cov pa roj carbon monoxide, nthuav tawm zoo kawg nkaus tiv thaiv tshuaj tua kab mob thiab kub kub, ua rau nws yog ib qho khoom siv zoo tshaj plaws rau cov khoom siv hauv kev lag luam metallurgical. Kev tiv thaiv corrosion ntawm graphite crucibles yog ntaus nqi rau cov khoom tshwj xeeb ntawm graphite nws tus kheej. Graphite muaj qhov tsis zoo, uas tiv thaiv nws los ntawm kev cuam tshuam nrog feem ntau cov kua qaub, alkalis, thiab lwm yam corrosive uas tau ntsib thaum lub sij hawm hlau melting thiab alloy ntau lawm.
Acid Resistance:Graphite cruciblesUa tau zoo heev tiv thaiv acidic ib puag ncig. Lawv tuaj yeem tiv taus cov teebmeem corrosive ntawm cov kua qaub xws li sulfuric acid, hydrochloric acid, thiab nitric acid. Qhov kev ua tau zoo no yog qhov tseem ceeb hauv cov txheej txheem cuam tshuam nrog kev tuav cov kua qaub, xws li kev tsim cov hlau thiab hlau oxides.
Alkali Resistance: Ntxiv rau cov kua qaub,graphite cruciblesmuaj kev tiv thaiv rau alkalis. Cov tshuaj alkaline, xws li sodium hydroxide thiab potassium hydroxide, feem ntau yog siv rau hauv ntau yam kev siv metallurgical.Graphite cruciblesnyob twj ywm tsis cuam tshuam los ntawm cov alkalis, ua kom muaj kev ncaj ncees thiab lub neej ntev ntawm lub crucible thaum cov txheej txheem zoo li no.
Oxidation Resistance: Graphite muaj oxidation zoo heev, txawm nyob rau hauv qhov kub thiab txias. Thaum raug tshav kub heev, graphite tsim ib txheej tiv thaiv ntawm graphite oxide ntawm nws qhov chaw, uas ua raws li kev tiv thaiv oxidation ntxiv. Cov cuab yeej no muaj txiaj ntsig tshwj xeeb hauv cov ntawv thov uas cov crucibles raug oxidizing cua, xws li smelting thiab refining ntawm hlau.
Thermal Shock Resistance: Lwm qhov tseem ceeb ntawmgraphite cruciblesyog lawv tsis kam rau thermal shock. Graphite muaj cov thermal conductivity thiab qis coefficient ntawm thermal expansion, ua rau nws tiv taus kub hloov ceev yam tsis muaj cracking los yog tawg. Qhov kev tiv thaiv thermal poob siab yog qhov tseem ceeb hauv cov txheej txheem uas cuam tshuam nrog kev rov ua cua sov thiab cua txias, xws li hlau casting thiab alloy ntau lawm.
Qhov zoo ntawm Graphite Crucibles
Cov khoom tiv thaiv corrosion ntawm graphite crucibles muaj ntau qhov zoo hauv kev lag luam metallurgical:
Ntev Lifespan: Graphite crucibles muaj lub neej ntev dua piv rau cov tsoos crucibles ua los ntawm cov ntaub ntawv xws li av nplaum los yog ceramic vim lawv superior tiv thaiv corrosion thiab thermal shock.
Txhim kho cov khoom zoo: Cov khoom tsis zoo ntawm graphite crucibles xyuas kom meej tias cov hlau molten lossis alloy tseem tsis muaj paug, ua rau cov khoom zoo dua qub.
Zog Efficiency: Graphite crucibles muaj cov thermal conductivity zoo, ua kom muaj cua sov hloov pauv, sib faib qhov kub thiab txias, thiab txo lub zog noj thaum lub sij hawm melting.
Nqi-Effectiveness: Txawm hais tias thawj zaug kim dua lwm cov ntaub ntawv crucible, graphite crucibles 'ntev lifespan thiab superior kev ua tau zoo ua rau lawv tus nqi-zoo xaiv nyob rau hauv lub sij hawm ntev.
Xaus
Graphite crucibles ua lub luag haujlwm tseem ceeb hauv kev lag luam metallurgical, muab cov khoom tshwj xeeb tiv thaiv corrosion, thermal shock resistance, thiab oxidation kuj. Lawv muaj peev xwm tiv taus cov mob hnyav uas tau ntsib thaum lub sij hawm hlau melting thiab alloy ntau lawm ua rau lawv indispensable nyob rau hauv ntau yam metallurgical txheej txheem. Los ntawm kev xaiv graphite crucibles, cov tuam txhab tsim khoom tuaj yeem ua kom cov khoom zoo dua qub, lub neej ntev ntev, lub zog ua haujlwm, thiab tag nrho cov nqi-zoo. Raws li kev lag luam metallurgical txuas ntxiv mus, graphite crucibles yuav nyob twj ywm ib qho kev txhim khu kev qha thiab tseem ceeb hauv kev nrhiav cov khoom siv hlau zoo thiab zoo.
Post lub sij hawm: Apr-02-2024