Vim tias lub tshuab hluav taws xob npog npog ua haujlwm nyob rau hauv qhov kub thiab txias thiab cua sov sai, cov kev siv tau hnyav heev. High-alumina bricks yog nquag mus spalling vim hluav taws xob qhov, thaum steel fiber ntau castables muaj zoo thermal poob siab kuj, high-temperature yaj yaig kuj, thiab zoo high-temperature ntim stability, ua rau lawv muaj zog nyob rau hauv high-temperature qauv.
Ntxiv ib qho kev faib ua feem ntawm cov hluav taws kub-resistant steel fiber rau castable tuaj yeem txhim kho qhov kev ntxhov siab ntawm cov castable refractory thiab txhim kho lub toughness ntawm castable. Ntxiv mus, cov hlau fiber ntau castable muaj zoo thermal poob siab stability, tsis kam mus tawg thiab tev. Kev saib xyuas tsim nyog tom qab kev tsim kho tuaj yeem ua tau zoo dua rau kev pab cuam lub neej ntawm lub qhov cub npog. Yog li ntawd, nws yog qhov zoo tshaj plaws los siv steel fiber castables rau hluav taws xob rauv npog.
Thaum tsim tawmsteel fiber ntau castables, xyuam xim rau kev siv cov cement tshiab los npaj lawv nrog cov dej ntws zoo, vim tias lub zog compressive thiab flexural zog ntawm castables npaj nrog cov cement qub yuav txo qis tom qab ziab. Lub fluidity thiab qhov chaw ceev tsis zoo li cov cement tshiab. Yog li ntawd, thaum npaj thiab tsim cov castables, cov cement uas tau tsim tshiab yuav tsum tau siv los ua tus neeg sawv cev los txhim kho lub zog thiab tensile muaj peev xwm ntawm steel fiber castables.
Yuav ua li cas los txhim kho qhov zoo ntawm refractory castables siv nyob rau hauv hluav taws xob rauv npog?
Hauv kev xaiv cov ntaub ntawv, refractories castables yog siv nyob rau hauv daim duab peb sab ntawm lub qhov cub hluav taws xob npog. Lub tshuab hluav taws xob npog feem ntau yog siv prefabricated blocks ntawm refractory castables ua los ntawm corundum, chrome corundum, siab alumina, mullite thiab lwm yam ntaub ntawv. Refractory prefabricated blocks muaj kev ncaj ncees thiab corrosion kuj, yog ib qho yooj yim rau tsim thiab muaj kuj guaranteed kev tsim kho zoo, uas zoo heev txhim kho lub zuag qhia tag nrho zoo ntawm lub cub hluav taws xob npog.
Feem ntau, corundum (chrome corundum) prefabricated qhov chaw yog siv nyob rau hauv lub triangular cheeb tsam ntawm ultra-high-power hluav taws xob rauv npog. High-aluminium thiab mullite prefabricated blocks yog dav siv nyob rau hauv lub npog daim duab peb sab ntawm high-power hluav taws xob furnaces.
Kev ntsuas thev naus laus zis los txhim kho qhov zoo ntawm refractory castables
1. Aggregates ua lub luag haujlwm ntawm cov pob txha thiab kev txhawb nqa, thaum lub matrix plays lub luag haujlwm ntawm kev sau cov pores, wrapping aggregates, thiab txuas cov aggregates. Yog li ntawd, cov ntaub ntawv raw nrog siab purity, tsis muaj impurities, thiab high-temperature ntim stability yog thawj yam mob.
2. Txhawm rau kom tau txais kev ua haujlwm kub zoo, cov ntsiab lus CaO yuav tsum tau tswj kom ntau li ntau tau, uas yog, cov cement yuav tsum raug txo kom ntau li ntau tau. Raws li CaO cov ntsiab lus nce ntxiv, cov kua theem nce ntxiv thaum qhov kub nce.
3. Ntxiv qhov tsim nyog ntawm tAIzOs kom nce qhov nruab nrab kub siv. Lub ntim shrinkage tshwm sim los ntawm crystalline transformation ntawm nruab nrab kub theem txhim kho qhov nruab nrab kub lub zog.
4. Ntxiv cov av nplaum uas tsim nyog los ua tus neeg sawv cev sintering los txhawb cov kua theem tsim thiab sintering thiaj li tsim tau ib daim ntawv cog lus ceramic.
5. Txhim kho lub refractory castables ntim shrinkage ntawm cov khoom thaum lub sij hawm sintering txheej txheem thiab sib txuas ntxiv additives (kyanite, sillimanite, thiab lwm yam) uas tsim expansion tshwm sim ntawm kub kub.
6. Ntxiv cov cua sov-resistant stainless hlau fibers los txhim kho thermal stability thiab toughness.
7. Ntxiv qhov tsim nyog ntawm tus neeg saib xyuas los tiv thaiv kom yooj yim rau kev tawm ntawm cov dej vapor thiab txhim kho qhov ci zoo.
