Nyob rau hauv kev tsim ntawm lub cub tawg, lub ntsiab lus tseem ceeb yog them rau cov qauv tsim, kev ua haujlwm ntawm tus kheej cov khoom ntawm cov qauv thiab kev ua haujlwm ntawm kev tshem tawm cov pa luam yeeb. Thaum xub thawj, cov khoom siv rau kev tsim cov qauv kuj suav nrog, vim tias qhov tshwj xeeb ntawm nws txoj haujlwm txiav txim siab nruj rau cov yam ntxwv ntawm chav tsev. Nyob rau tib lub sijhawm, cov khoom siv hauv paus yog nyob deb ntawm ib txwm muaj peev xwm tiv nrog cov teebmeem thermal uas ib lub qhov cub tshwj xeeb yog tsim los rau. Hauv ob sab phlu, raws li kev siv thev naus laus zis ntawm kev ua haujlwm ntxiv, tso cai rau ob qho tib si txo qis thermal tsis zoo thiab tiv thaiv kev puas tsuaj rau cov qauv.
Thaum twg cov kab ua tiav?
Qhov kev xaiv thawj zaug ntawm cov khoom siv hauv tsev rau kev ua haujlwm ntawm cov qauv yog ua los ntawm kev siv nws lub peev xwm los tiv thaiv kev ua haujlwm. Raws li tau hais los saum no, cov yam ntxwv tseem ceeb tsis txaus. Nws yog ib qho tsim nyog yuav tsum siv cov ntaub ntawv thermal rwb thaiv tsev ntxiv hauv qee qhov cuam tshuam nrog qhov nce ntawm qhov kub thiab txias ntawm qhov chaw ntawm cov qauv. Tshwj xeeb, qhov no siv rau cov khoom siv hluav taws xob tsim los ua haujlwm nyob rau hauv lub sijhawm ntev combustion hom. Tsis tas li ntawd, qhov ntsuas kub siab muab cov roj calorie ntau ntau, txawm tias cov chav notsis tshua siv thiab feem ntau hauv kev lag luam.
Raws li cov qauv hauv tsev qhov cub, feem ntau lawv tsis xav tau cov txheej txheem tiv thaiv ntxiv, tab sis tsuas yog peb tab tom tham txog cov qauv me me thiab nruab nrab. Qhov xwm txheej txawv yog tias lub qhov cub loj hauv Lavxias tau txiav txim siab. Cov hauv ob sab hauv no tso cai rau koj los tiv thaiv thaj chaw ua haujlwm uas tuaj yeem siv ua noj.
cov ntaub ntawv tseem ceeb
Refractory fireclay cib yog suav tias yog cov khoom siv classic rau hauv ob sab phlu. Nrog nws cov kev pab, kev tiv thaiv sab nraud yog tsim. Qhov kev xaiv no yog tsim rau sauna qhov cub uas xav tau qee yam ua tiav thermal rwb thaiv tsev. Nyob rau hauv ib txwm version, lub refractory hauv ob sab phlu nrog fireclay yog ib txheej ntawm lub cub tawg nyob rau hauv thiaj li yuav tiv thaiv kom txhob kub siab.
Raws li thev naus laus zis tau tsim, lwm txoj hauv kev los tiv thaiv lub tshuab hluav taws xob tau tshwm sim. Yog li, yog tias ua ntej pob zeb mortars tau npaj, los ntawm qhov zoo tib yam plaster tau tom qab nteg, tom qab ntawd hauv nws cov qauv niaj hnub tib txoj kev zoo li txawv me ntsis. Qhov sib txawv tseem ceeb yog qhov sib tov yog siv rau qhov chaw kub uas siv tshuab txhaj tshuaj. Ntawd yog, cov pob zeb kub-resistant yog siv rau lub hom phiaj saum npoo hauv cov khaubncaws sab nraud povtseg siv cov cuab yeej cua compressed pneumatic.
Yuav ua li cas
Qhov sib txawv ntawm classic txheej thiab masonry nrogRoll coatings muaj cov thermal rwb thaiv tsev ua haujlwm. Ua ntej, lawv yooj yim rau kev thov. Qhov thib ob, lub txheej yuav siv sij hawm tsawg kawg nkaus ntawm qhov chaw, nce lub thickness ntawm cov qauv los ntawm tsis ntau tshaj 1 cm. Rau kev sib piv, kub-resistant pob zeb nyob rau hauv daim ntawv ntawm plaster tsub kom lub thickness ntawm phab ntsa ntawm lub cub tawg qauv los ntawm 1-2. cm, thiab ib lub cib tuaj yeem ncav cuag 10 cm hauv qhov ntsuas no. nthuav tawm ntau daim ntawv, feem ntau ntawm cov ntawv nplaim hluav taws.
Qhov dav tshaj plaws hauv ntu no yog mullite-silica kaolin wool, uas tau los ntawm melting silicon thiab oxide nyob rau hauv lub cub hluav taws xob. Hauv kev xyaum, nws tau sau tseg tias cov khoom siv no muaj cov thermal conductivity tsawg thiab tib lub sijhawm nce thermal stability. Tsis tas li ntawd, kaolin thermal rwb thaiv tsev cov ntaub ntawv tsis raug puas los ntawm cov tshuaj, uas lawv muaj nuj nqis nyob rau hauv industrial ntau lawm.
Induction cua sov tiv thaiv nta
Pib nrog, nws yuav tsum tau muab sau tseg tias qhov yuav tsum tau ua hauv ob sab phlu ntawm induction furnaces tshwm sim tsis yog vim qhov tsis muaj zog ntawm cov qauv ua ntej thermal shocks, tab sis vim hais tias ntawm lawv daim ntawv thov tshwj xeeb. Xws li cov chav nyob yog siv rau melting hlau nyob rau hauv high kub, yog li ntawd, tshwj xeeb txhais tau tias nyob rau hauv daim ntawv ntawm qhuav mix yog siv los tiv thaiv lawv. Hauv cov ntsiab lus, qhov no yog txheej txheej classic, tab sis muaj pes tsawg leeg rau qhov loj yog qhov txawv ntawm cov pob zeb pob zeb. Yog li, hauv ob sab phlu ntawm induction furnaces, uas yaj tsawg-alloy thiab carbon hlau, koom nrog kev siv spinel-forming masses. Tom qab, los ntawm txoj kev,yog resistant rau slag tsim. Cov chav nyob rau melting cam khwb cia hlau yog kho nrog quartzite compositions, thiab yog hais tias tsis yog-ferrous qib nrog hlau ntxiv rau cov hlau no, ces technologists ntxiv mullite-forming Cheebtsam rau hauv ob sab phlu daim ntawv qhia.
Kev siv thev naus laus zis
Muaj ntau cov txheej txheem hauv ob sab phlu thiab txoj hauv kev sib txawv hauv kev npog saum npoo thiab cov ntaub ntawv insulating. Cov ntaub thaiv npog tuaj yeem yog sab nraud thiab sab hauv. Cov txheej txheej feem ntau yog siv rau tag nrho qhov siab - los ntawm hauv qab mus rau cov npoo npoo. Kev kho kom zoo nkauj sab hauv tuaj yeem muab kev tiv thaiv ntawm qhov chaw ua haujlwm nyob rau hauv kev sib cuag nrog ob qho tib si hluav taws xob ncaj qha thiab cov pa luam yeeb nyob rau hauv daim ntawv ntawm high-temperature pa gases. Cov txiaj ntsig zoo tshaj plaws yog muab los ntawm kev tiv thaiv circuits uas ua tiav cais lub qhov cub. Hauv ob sab phlu yog nqa tawm tsuas yog rau ntawm qhov chaw huv. Kev npaj ntawm cov khoom, raws li ib tug txoj cai, yuav dilution ntawm active tshuaj nyob rau hauv cov kuab tshuaj. Nyob rau hauv txoj kev no, ib qho sib tov rau txheej yog tsim, uas yog siv rau qhov chaw ntawm cov qauv siv tsoos ntsej muag cov cuab yeej. Cib, nyob rau hauv lem, yog nteg raws li tus txheej txheem schemes nyob rau hauv raws li cov kev cai rau kev tiv thaiv ntawm cov qauv.
Zoo kawg
Cov txheej txheej txheej ntawm qhov cub yuav tsum tsis yog tsuas yog muab kev tiv thaiv thermal, tab sis kuj muab kev tiv thaiv los ntawm lwm yam. Piv txwv li, nyob rau hauv tej yam kev mob ntawm industrial thaj chaw, muaj kev pheej hmoo ntawm mechanical influences rau qhov twgci. Cov hauv ob sab phlu hauv qhov no kuj suav nrog kev ua tiav ntawm cov dej num ntawm kev tiv thaiv lub cev ntawm cov qauv. Yog li ntawd, tshwj xeeb plasticizers tuaj yeem muab ntxiv rau qhov sib tov, hloov kho lub zog ntawm cov khoom sib xyaw. Tab sis qhov no tsuas yog siv rau kev tsim cov rwb thaiv tsev sab nraud, thiab cov txheej txheem sab hauv yog tag nrho taw qhia rau kev tsim cov ntxaij vab tshaus kub zoo.
