Lub ntsiab lus ntawm Refractory Materials
Refractories xa mus rau inorganic non-metallic cov ntaub ntawv nrog ib tug refractoriness ntawm tsis tsawg tshaj li 1580 degree C.Refractories feem ntau siv lub ntuj ore thiab pob zeb ntawm lub aluminium silicate system raws li lub ntsiab raw cov ntaub ntawv, nws cov txheej txheem yooj yim thiab tej yam yooj yim yam ntxwv zoo ib yam li lwm yam khoom. ntawm silicate system, yog li cov refractories tau teev raws li cov khoom lag luam hauv silicate system, uas yog ib feem tseem ceeb ntawm kev lag luam silicate. Nws thiab xis mas, ceramics, iav thiab lwm yam silicate kev lag luam nyob rau hauv lub teb chaws kev khwv nyiaj txiag muaj ib tug tseem ceeb heev txoj hauj lwm thiab lub luag hauj lwm.Refractory khoom yog lub npe hu ua "niam ntawm steel" lub koob npe nrov, vim hais tias nws muaj qhov tshwj xeeb kev ua tau zoo ntawm tsis kam mus rau kub nyob rau hauv thermal khoom. , thiab occupies ib txoj hauj lwm tseem ceeb heev nyob rau hauv txoj kev loj hlob ntawm niaj hnub kev lag luam. Nrog rau kev tshawb nrhiav thiab kev xav tau ntawm kev tshawb fawb thiab thev naus laus zis, kev siv cov khoom siv refractory tau nthuav dav txhua hnub, los ntawm metallurgy (xws li steel thiab non-ferrous metallurgy, thiab lwm yam), silicate (cement, ceramics, thiab lwm yam), kev lag luam tshuaj lom neeg. , fais fab, machinery manufacturing thiab lwm yam industries, txuas mus rau tag nrho cov high-temperature lag luam ntawm industrial thiab mining enterprises, lub cub tawg (combustion kiln, melting pas dej ua ke, hluav taws tso, crucible) thiab lwm yam thermal khoom cua sov ib feem, refractory ntaub ntawv yog ib qho tseem ceeb indispensable lub tsev. khoom siv. Cov ntaub ntawv kub resistant los yog qhov chaw kuj tseem yog qhov tseem ceeb hauv cov kev tshawb fawb qib siab (xws li foob pob hluav taws, atomic reactors, thiab lwm yam). Vim tias cov khoom siv refractory tau siv ntev ntev hauv ntau yam khoom siv kub hauv cov cua kub sib txawv, nws yuav raug rau qhov kub thiab txias thiab ntau lwm yam sib txawv, thiab raug puas tsuaj los ntawm kev ua rau lub cev thiab tshuaj lom neeg. Yog li ntawd, refractories yuav tsum muaj cov khoom tseem ceeb hauv qab no.
1. Nws tsis yooj yim rau yaj ntawm qhov kub thiab txias
Kev ua haujlwm kub ntawm cov khoom siv niaj hnub no feem ntau yog nruab nrab ntawm 1000 thiab 1800 ° C, yog li ntawd, cov khoom siv refractory yuav tsum xub muaj qhov ua tau zoo uas tsis yooj yim rau yaj ntawm qhov kub no.
2. Nws tsis soften nyob rau hauv siab kub siab
Lub melting kub ntawm feem ntau refractories yog ntau tshaj 1650 ~ 1700 degree, tab sis nws pib deform (soften) ua ntej mus txog lub melting kub, thiab poob lub structural zog, yog li ntawd lub refractory yuav tsum tsis tsuas yog muaj ib tug siab melting kub, tab sis kuj yuav tsum muaj. kev ua haujlwm ntawm deformation nyob rau hauv cov xwm txheej ntawm qhov kub thiab txias load.
3, lub ntim yog ruaj khov nyob rau hauv ib puag ncig kub
Thaum refractories siv nyob rau hauv qhov kub thiab txias, lub ntim hloov vim lub cev thiab tshuaj cov tshuaj tiv thaiv nyob rau hauv cov khoom. Qhov kev hloov ntawm feem ntau refractories yog ntim contraction, thiab ob peb yog nthuav. Txawm hais tias nws yog ntim shrinkage lossis nthuav dav, xws li dhau ntawm qee qhov ntau tuaj yeem ua rau lub cev puas tsuaj. Yog li ntawd, cov refractories yuav tsum muaj zoo kub ntim stability.
Nws tuaj yeem tiv taus lub qhov thiab Juju rattan tseem cuam tshuam los ntawm kev tuav tsis sib xws thiab ua rau や kev puas tsuaj
Hauv qhov cub nrog kev ua haujlwm tsis sib xws, ntawm qhov kub thiab txias, kev hloov pauv sai lossis cua sov tsis sib xws ntawm masonry nyob rau hauv txhua feem yuav ua rau muaj kev ntxhov siab hauv lub cev bricklaying thiab tawg cov khoom, ua rau lub cev puas tsuaj. Yog li ntawd, cov khoom siv refractory yuav tsum muaj kev ua haujlwm ntawm thermal stability uas tuaj yeem tiv taus qhov hloov pauv thiab hloov pauv ntawm qhov cub kub yam tsis muaj qhov tawg.
5, kub kub tuaj yeem tiv taus qhov yaig ntawm slag
Cov ntaub ntawv refractory nyob rau hauv tus txheej txheem ntawm kev siv, vim yog disguised kev sib cuag ntawm cov roj tshauv, molten slag thiab molten hlau thiab lwm yam cuam tshuam ntawm yaig. Yog li ntawd, refractories yuav tsum muaj peev xwm tiv taus qhov kev yaig zoo li no. Thaum siv cov refractories, nws yog ib qho tsim nyog yuav tau xaiv qhov tsim nyog raws li cov cai tseem ceeb ntawm lub sijhawm thiab cov yam ntxwv ntawm ntau yam refractories.
JIYGO REFRACTORY & ABRASIVE LIMITED