Raws li cov cuab yeej txhawb nqa, lub tshuab ziab khaub ncaws yog qhov tsim nyog txuas rau ntau lub tshuab ua haujlwm. Kev kub siab ua haujlwm ib puag ncig. Yuav kom ua tiav lub zog txuag thiab txhim kho kev ziab kom qhuav, cov khoom siv refractory tau dhau los ua cov txheej txheem tseem ceeb hauv lub tshuab ziab khaub ncaws. Nyob rau hauv view ntawm qhov tseeb hais tias nws yog muab rau lub tshuab ziab khaub ncaws. Hauv qhov chaw ua haujlwm tshwj xeeb ntawm lub tshuab ziab khaub ncaws, thaum peb xaiv cov khoom siv refractory rau lub tshuab ziab khaub ncaws, peb feem ntau siv cov khoom siv refractory monolithic -castable, uas yog qhov zoo dua hauv kev tsim kho thiab cov nyhuv ntawm kev siv.
Kev xaiv cov khoom siv casting rau tshuab ziab khaub ncaws
Kev xaiv cov tshuab ziab khaub ncaws yuav tsum ua raws li qhov xwm txheej ntawm cov khoom tiav ntawm lub tshuab ziab khaub ncaws kom ua tiav qhov ntsuas lub cev thiab tshuaj lom neeg kawg. Feem ntau hais lus, nyob rau hauv lub tshuab ziab khaub ncaws castables, tsawg cement refractory castables yog dav siv.
Tsawg cement castable yog hais txog castable nrog cov ntsiab lus qis cement. Cov ntsiab lus cement ntawm refractory cement castable feem ntau yog 15% ~ 20 feem pua, cov cement cov ntsiab lus ntawm cov cement castable tsawg yog li 5 feem pua, thiab qee qhov txawm txo mus rau 1% ~ 2 feem pua. Lub hom phiaj ntawm kev txo cov cement yog los txhim kho qhov hluav taws kub ntawm castable.
Qhov zoo ntawm cov cement castables tsawg
(1) Vim tias cov cement cov ntsiab lus tsuas yog 1/15 -- 1/2 ntawm qhov zoo tib yam refractory castable, lub castable raug txo los ntawm 2.5 feem pua -- 8 feem pua rau 2.5 feem pua , tus naj npawb ntawm cov theem qis eutectic tsim nyob rau hauv cov matrix txo qis heev, thiab yog li cov refractories, kub siab zog thiab slag kuj tau zoo tuaj. Nyob rau hauv qhov kub thiab txias, cov ntsiab lus melting tsawg yog txo, thiab hnav tsis kam, siab kub dabtsi yog khoov lub zog thiab softening kub nyob rau hauv load kuj ho txhim kho.
(2) Kev sib xyaw cov dej xav tau tsuas yog qhov zoo tib yam refractory saj zawg zog txhaj tshuaj 1/3 - 1/2(4 feem pua -6%), yog li tsis tshua muaj porosity, siab ntim ceev, thiab tib cov khoom raug rho tawm mus rau hauv cov khoom refractory theem Shuomei. Lub zog ntawm castable sib txawv nrog cov dej ntxiv.
(3) Tom qab tsim thiab kho, cov cement hydrate tsawg dua los yog tsis muaj cov cement hydrate, thiab tsis muaj teeb meem uas ntau cov hydration bonds raug rhuav tshem thiab cuam tshuam rau lub zog thaum lub sij hawm cua sov thiab ci, tab sis nrog rau kev kho cua sov thiab kub. maj mam sintering, lub zog kuj maj mam nce. Tshwj xeeb tshaj yog txawv ntawm qhov zoo tib yam refractory castable, lub zog txhua yam yog siab dua lub zog ziab hauv nruab nrab qhov kub thiab txias (900-1200 sau ntawv). Ob qho tib si kub thiab kub ib txwm muaj zog yog zoo dua li qub refractory castable.
Tshuab Ziab Khaub Ncaws Muaj qhov zoo ntawm qhov siab ntom ntom, muaj zog thiab kub ua rau muaj zog, muaj zog tawm tsam thiab zoo thermal poob siab tsis kam. Nws qhov kev ua tau zoo tuaj yeem sib phim nrog cov khoom siv hluav taws xob raug rho tawm haujlwm, siv thoob plaws hauv cov hlau, tshuab, tshuaj thiab cov khoom siv hauv tsev thiab lwm yam, thiab tau txais txiaj ntsig zoo.
