Hauv kev tsim kho thiab kev saib xyuas ntawm cov khoom siv hluav taws xob, cov ntaub ntawv refractory ua lub luag haujlwm tseem ceeb. Ntawm lawv,refractory castablesthiab refractory plastics yog ob qho khoom siv dav siv. Txawm hais tias lawv yog ob qho tib si cov ntaub ntawv refractory, lawv muaj lawv tus kheej cov yam ntxwv thiab kev siv.
1. Txawv nthuav dav tsim
Refractories castables yuav tsum khaws cov pob qij txha expansion thaum lub sij hawm tsim kho, feem ntau yog faus PVC expansion sib koom daim hlau. Txawm hais tias txoj hauv kev no tuaj yeem tiv nrog kev nthuav dav ntawm cov khoom siv vim qhov kub thiab txias, nws yuav muaj qee yam cuam tshuam rau tag nrho cov txheej txheem txuas ntxiv ntawm lub tshuab hluav taws xob hauv ob sab phlu lossis lub qhov cub hauv qab.
Lub tswv yim tsim ntawm cov yas refractory yog siab dua, thiab nws ua raws li "0" nthuav dav tsim qauv. Qhov no txhais tau hais tias cov qauv ntawm cov khoom siv thiab cov qauv tsim tau raug kho kom zoo kom nyob rau ntawm qhov kub thiab txias, cov khoom tuaj yeem khaws cia ntawm qhov qis heev txawm hais tias nws yuav raug tensile lossis compressive kev ntxhov siab. Qhov kev tsim qauv no ua kom ntseeg tau tias lub tshuab hluav taws xob hauv ob sab phlu tuaj yeem tswj tau qhov kev ruaj ntseg ntawm qhov kub thiab txias ib puag ncig thiab yuav luag tsis cuam tshuam los ntawm thermal expansion, thiaj li txhim kho kev ncaj ncees thiab kev pab cuam lub neej ntawm lub cub tawg.
2. Txawv thermal shock kuj
Muaj qhov sib txawv tseem ceeb hauv thermal shock resistance ntawm refractory castables thiab refractory plastics. Cov yas refractory muaj qhov txawv txav thermal shock tsis kam thiab tuaj yeem ua siab ntev tiv thaiv qhov kub thiab txias hloov pauv hauv lub cub tawg, thiab tuaj yeem tiv taus qhov cuam tshuam ncaj qha ntawm nplaim taws yam tsis muaj kev ua haujlwm tsis zoo lossis kev puas tsuaj. Qhov tshwj xeeb ntawm cov khoom siv no yog tias nws tuaj yeem tiv taus kev kaw ntau zaus thiab cov txheej txheem cua sov sai yam tsis muaj kev txhawj xeeb txog cov txheej txheej txheej txheej los yog tawg. Qhov tseeb, nws cov thermal shock kuj yog 3 mus rau 6 npaug ntawm cov castables zoo tib yam, ua tsaug rau nws cov khoom siv qib siab thiab cov txheej txheem ntau lawm.
Cov tsoos refractory castables feem ntau zoo li tsis tuaj yeem tiv nrog kev hloov pauv sai sai, thiab lawv cov ntaub qhwv tuaj yeem ua rau tev, tawg thiab lwm yam teeb meem, uas cuam tshuam rau kev ua haujlwm ib txwm muaj thiab kev pabcuam lub neej ntawm cov khoom siv.
3. Qhov sib txawv ntawm qhov cub ci txoj kev
Tom qab kev tsim kho ntawm refractories castables, lawv yuav tsum mus los ntawm ib tug kuj ntev curing, curing thiab furnace ci txheej txheem los xyuas kom meej tias cov khoom ua tau zoo tagnrho lub cev thiab tshuaj. Nyob rau hauv cov txheej txheem no, kev tswj ntawm ambient kub thiab av noo yog ib qho tseem ceeb, tshwj xeeb tshaj yog nyob rau hauv lub caij ntuj no, nruj antifreeze ntsuas yuav tsum tau coj los tiv thaiv cov khoom puas, uas ua rau kom complexity thiab lub sij hawm ntawm kev tsim kho rau ib tug tej yam kev txiav txim.
Cov yas refractory tsis txwv los ntawm lub caij nyoog raws li cov txheej txheem ntawm lub tshuab ziab khaub ncaws, thiab kev tsim kho tuaj yeem ua tiav txhua xyoo puag ncig, uas txhim kho txoj kev ywj pheej ntawm txoj haujlwm. Tom qab kev tsim kho ntawm cov yas refractory, tsis tas yuav tsum muaj sijhawm saib xyuas ntxiv, thiab lub qhov cub tuaj yeem ua kom sov thiab qhuav tam sim ntawd, thiab cov cua kub cua sov tuaj yeem siab txog 50 degree / teev. Raws li ib txwm muaj, nws tsuas yog siv sijhawm 24 teev rau lub qhov cub kub kom ncav cuag qhov kev ua haujlwm tsim khoom, yog li ua rau lub tshuab ziab khaub ncaws luv luv thiab txo cov nqi cuam tshuam.
4. Kev tswj hwm kev tsim kho sib txawv
Thaum cov neeg ua haujlwm tsim kho tau ntim thiab siv rau ntawm qhov chaw, qhov sib xws thiab qhov zoo ntawm cov yas tau raug lees paub zoo. Hauv kev ua haujlwm ramming, vim qhov ruaj khov ntawm cov khoom siv nws tus kheej thiab cov txheej txheem ntawm kev tsim kho, kev cuam tshuam ntawm tib neeg cov yam ntxwv ntawm qhov zoo ntawm qhov kawg ntawm lub qhov cub hauv ob sab phlu yog txo qis, yog li txhim kho kev tswj hwm thiab kev ntseeg siab ntawm kev tsim kho kom zoo.
Txij li thaum refractory castables yuav tsum tau nqa tawm ntau yam kev sib txuas tseem ceeb xws li kev tswj xyuas meej ntawm cov khoom siv ntxiv, kev sib xyaw qhuav, sib xyaw ntub dej, thiab kev vibration ntawm qhov chaw tsim kho, txhua kauj ruam ntawm cov txheej txheem no muaj qhov cuam tshuam ncaj qha thiab deb ntawm qhov zoo ntawm qhov cub zaum kawg. hauv ob sab phlu. Qhov no xav kom cov neeg ua haujlwm tsim kho kom muaj kev paub tob tob thiab kev ua haujlwm zoo los xyuas kom meej kev ua haujlwm thiab kev tswj xyuas nruj hauv txhua qhov txuas.
5. Cov txheej txheem tsim kho sib txawv
Cov txheej txheem kev tsim kho ntawm cov yas refractory suav nrog kev siv tawm ntawm lub thawv, tuag kos duab, ramming, demolding, sib tsoo thiab ncaj rau qhov cub ci. Cov txheej txheem tag nrho yog tsim los ua kom yooj yim thiab siv tau zoo. Hauv particular, lub preload thiab tuag drawing siv tshuab txais los ntawm nws qhia tau hais tias zoo heev zoo nyob rau hauv lub cub tawg ru tsev siv. Cov thev naus laus zis no tuaj yeem ua kom ntseeg tau tias qhov deformation ntawm lub tshuab hluav taws xob lub ru tsev steel qauv thiab lub tshuab hluav taws xob hauv ob sab phlu yog synchronized heev, kom cov thauj tog rau nkoj bricks dais lub zog sib xws, zoo tiv thaiv kev pheej hmoo kev nyab xeeb xws li tawg lossis tawg.
Cov txheej txheem kev tsim kho ntawm castables npog ntau qhov sib txuas xws li cov dej sib piv, pwm teeb tsa, kev tswj nruj ntawm kev sib xyaw lub sijhawm, nchuav ua haujlwm, kev co kev kho, kev kho lub sijhawm, demolding thiab rauv ci. Txhua kauj ruam yuav tsum muaj kev ua haujlwm siab thiab kev tswj xyuas cov ntsiab lus, vim tias kev tsis saib xyuas hauv ib qho kev sib txuas yuav ua rau muaj kev cuam tshuam tsis zoo rau qhov kawg ntawm cov khoom siv. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias txawm tias nyob rau hauv cov kev siv technology nruj, cov refractory castable tseem ua rau cov deformation theem nrab tom qab cov phab ntsa ntawm lub cub tawg thiab lub cub tawg tau demolded, uas yuav ua rau lub zog tsis sib xws ntawm cov thauj tog rau nkoj cib thiab yog li cuam tshuam rau cov qauv kev ruaj ntseg thiab kev pab cuam lub neej. tag nrho lub cub tawg.
