Kev xaiv cov khoom siv roj carbon refractory yog qhov tshwj xeeb tshwj xeeb tau ua tiav, koom nrog cov peev tseem ceeb thiab ua kom muaj kev nyab xeeb thiab muaj kev ruaj ntseg ntawm kev tsim khoom tom ntej.
Txhawm rau kom cov kev yuav khoom Carbbon Cib ntsib cov kev thov nyiaj txiag thiab ntau lawm kev cuam tshuam, cov kev txiav txim siab tseem ceeb yog qhov tseem ceeb:
Kom meej meej koj cov kev ua haujlwm ua haujlwm (core pre - procurement npaj)
Nov yog lub hauv paus ntawm txhua txoj haujlwm ua haujlwm. Ua tsis tau raws li qhov raug txhais tau tias koj cov kev xav tau tuaj yeem ua rau txhua txoj haujlwm tom ntej.
Txheeb xyuas cov haujlwm ua haujlwm:
Qhov Kub Kub Ntau: Dab tsi yog qhov kev ua haujlwm siab tshaj plaws? Puas yog nws pheej loj, lossis nws puas muaj kev ua kom txias thiab cua sov (thermal poob siab)?
Tshuaj lom neeg: yog nws oxidizing, txo qis, lossis qhov chaw nruab nrab? Cov pa roj carbon refractible yog qhov ua rau oxidation hauv oxidizing cua, uas yog nws qhov tsis muaj zog tshaj plaws. Nws tau tshaj tawm nrog dab tsi? Piv txwv li cov hlau molten (hlau kub, aluminium, thiab lwm yam), lub ph ntawm slag (sabo / sio2 piv), thiab kev sib sau ua ke ntawm cov roj av.
Txawm tias muaj nuj nqis ua tau zoo yuav tsum muaj:
Compressive muaj zog: Yuav tsum muaj peev xwm tiv thaiv lub siab ntawm cov qauv cub hluav taws xob thiab cov khoom siv.
Oxidation tsis kam: Qhov no yog qhov taw qhia tseem ceeb ntawm carbon rankoriness. Qib uas yuav tsum tau ntawm oxidation tiv taus yog txiav txim siab los ntawm cov kua txiv oxygen thiab kub nyob rau hauv lub cub tawg. Qhov no yog ib qho uas tau txhim kho los ntawm kev ntxiv cov tshuaj tiv thaiv kab mob antioxide (xws li si, al, thiab sic).
Corrosion Kuj: Ua kom mob corrosion los ntawm kev sib dhos tshwj xeeb thiab molten hlau.
Thermal Conductivity: rau cov cheeb tsam uas yuav tsum tau ua cua sov (xws li cov tawg sov rauv hnov yog yuav tsum tau ua los ntawm cov tuam txhab tiv thaiv txheej txheem; Rau cov cheeb tsam uas xav tau rwb thaiv tsev, tsis muaj thermal conductivity yuav tsum tau.
Siab - kub lub zog thiab cov creep zog: tsis kam deformation thiab softening nyob rau hauv lub sij hawm ntev.
Nruj me ntsis tswj cov kev ua tau zoo ntawm cov roj carbon regractory
When communicating with suppliers, the following key quality indicators must be clearly defined, and authoritative third-party testing reports must be requested.
Tshuaj lom neeg cov tshuaj:
Cov ntsiab lus carbon tsau cov ntsiab lus: qhov no yog lub hauv paus ntawmCarbon Recharptorykev ua tau zoo. Cov ntsiab lus roj carbon ntau dua cov ntsiab lus ntau dua feem ntau qhia tau zoo dua siab dua- kub ua hauj, corrosion tsis kam, thiab thermal conductivity.
Cov ntawv thov sib txawv (xws li cov tshuab hluav taws kub tawg, cov calcium carbide furnaces, thiab ferrroalloy cov ntsiab lus, nrog cov kev sib txawv yog 92% mus rau 99% lossis siab dua.
Cov tshauv cov ntsiab lus: Tshauv yog ib qho impurity nyob rau hauv carbon cib, feem ntau tsim ntawm cov hlau oxides. Cov ntsiab lus zoo li hmoov tshauv muaj peev xwm txo qis cib kev rov ua haujlwm, swb corrosion tsis kam, thiab thermal conductivity. Cov ntsiab lus tshauv yuav tsum tau nruj me ntsis.
Cov teeb meem hloov kho: muaj teeb meem loj heev qhia tias tsis muaj pa roj carbonancation tsis tiav, ua rau txuas ntxiv roj thaum siv, ua rau ib tus qauv cib thiab ua kom muaj zog.
Ib qib ntsiab lus: qee txoj kab ntu (xws li potassium, sodium, thiab zinc) tuaj yeem ua rau "alkali corrosion" hauv carbon cib, ua rau lawv nthuav dav thiab pulverize. Yog li ntawd, lawv cov ntsiab lus yuav tsum tau saib xyuas.