Tam sim no, tsis muaj cov txheej txheem ntxaws hauv lub tebchaws rau kev tsim kho cov khoom siv hluav taws xob, tab sis muaj cov qauv tshuaj xyuas kom meej thiab kuaj pom rau ntau yam khoom siv refractory hauv lub teb chaws tus qauv GB / T rau cov ntaub ntawv refractory.Koj tuaj yeem xa mus rau cov qauv no los ntsuas kev tsim cov castables.Cia peb tham txog lawv luv luv.
Ntau cov castables tuaj yeem raug tshuaj xyuas thiab kuaj raws li lub teb chaws tus qauv Test Method rau Thermal Expansion of Refractory Materials (GB/T7320).Lub refractory castables hauv ob sab phlu yuav tsum tau nchuav raws li cov kev cai hauv qab no:
1. Lub chaw tsim kho yuav tsum tau muab ntxuav ua ntej.
2. Thaum lub refractory castables sib cuag nrog refractory cib los yog thermal rwb thaiv tsev cov khoom, anti dej absorption ntsuas yuav tsum tau coj mus cais lawv.Thaum lub sij hawm tsim kho, ua npuas ncauj boards thiab ntaub yas siv tau los cais lawv, thiab lawv tuaj yeem raug tshem tawm tom qab kev tsim kho.
Cov chaw tsim khoom castable ceeb toom rau koj tias qhov saum npoo ntawm lub formwork siv rau lub qhov cub hauv ob sab phlu yuav tsum du, muaj zog txaus thiab lub zog, thiab erection thiab tshem tawm cov formwork nrog cov qauv yooj yim yuav tsum ua raws li cov hauv qab no:
1. Cov kev txhawb nqa yuav tsum tau ua kom ruaj khov thiab muab tshem tawm kom tsis txhob muaj cov khib nyiab tawm ntawm qhov sib koom ua ke.Cov ntoo batten tshwj tseg rau kev nthuav dav sib koom ua ke yuav tsum ruaj khov kom tsis txhob txav mus rau lub sijhawm vibration.
2. Rau refractory castables uas muaj zog corrosivity los yog cohesiveness, cais txheej yuav tsum tau teem nyob rau hauv lub formwork coj los tiv thaiv cohesiveness ntsuas, thiab qhov tso cai sib txawv ntawm qhov tseeb thickness direction dimension yog + 2 ~ - 4mm.Formwork yuav tsum tsis txhob muab ntsia rau ntawm lub poured castable thaum nws lub zog tsis ncav cuag 1.2MPa.
3. Cov formwork tuaj yeem txhim kho kab rov tav hauv cov khaubncaws sab nraud povtseg thiab ntu lossis hauv cov blocks ntawm lub sijhawm.Qhov siab ntawm txhua formwork erection yuav tsum tau txiav txim raws li cov yam ntxwv xws li lub ambient kub pouring ceev ntawm qhov chaw tsim kho thiab lub sij hawm teem ntawm lub castables.Feem ntau, nws yuav tsum tsis pub tshaj 1.5 m.
4. Lub load-bearing formwork yuav tsum raug tshem tawm thaum lub castable ncav cuag 70% ntawm lub zog.Lub formwork uas tsis yog load-bearing yuav tsum raug tshem tawm thaum lub zog castable tuaj yeem xyuas kom meej tias lub qhov cub hauv ob sab phlu thiab cov ces kaum yuav tsis raug puas vim demoulding.Cov kub thiab tawv castables yuav tsum tau ci rau qhov kub thiab txias ua ntej tshem tawm.
5. Qhov sib txawv me me, qhov chaw faib khoom thiab cov qauv ntawm kev nthuav dav sib koom ua ke ntawm kev sib xyaw ua ke ntawm lub tshuab hluav taws xob hauv ob sab phlu yuav tsum ua raws li cov qauv tsim, thiab cov ntaub ntawv yuav tsum tau ntim raws li cov qauv tsim.Thaum tus tsim tsis qhia qhov sib txawv loj ntawm expansion sib koom ua ke, qhov nruab nrab tus nqi ntawm expansion sib koom ib 'meter' ntawm lub cub tawg hauv ob sab phlu.Cov kab nthuav dav ntawm lub teeb refractory castable tuaj yeem teeb tsa thaum lub sijhawm nchuav lossis txiav tom qab nchuav.Thaum lub qhov cub hauv ob sab phlu thickness ntau dua 75 hli, qhov dav ntawm txoj kab nthuav dav yuav tsum yog 1 ~ 3 hli.Qhov tob yuav tsum yog 1/3 ~ 1/4 ntawm lub qhov cub hauv ob sab phlu.Qhov sib nrug ntawm txoj kab nthuav dav yuav tsum yog 0.8 ~ 1m raws li cov duab zoo.
6. Thaum lub thickness ntawm insulating refractory castable hauv ob sab phlu yog ≤ 50mm, phau ntawv txheej txheej kuj siv tau rau nruam pouring thiab phau ntawv tamping.Tom qab nchuav, lub hauv ob sab phlu yuav tsum tiaj tus thiab ntom yam tsis muaj polishing.
Thickness ntawm lub teeb insulating refractory castable hauv ob sab phlu δ< 200mm, thiab qhov chaw nrog inclination ntawm lub cub tawg hauv ob sab phlu tsawg tshaj li 60 tuaj yeem nchuav los ntawm tes.Thaum pouring, nws yuav tsum tau muab tusyees faib thiab tsis tu ncua poured.Cov roj hmab rauj lossis ntoo rauj yuav tsum tau siv los cog cov khoom nrog ib tug rauj thiab ib nrab rauj hauv cov duab plum.Tom qab compaction, lub portable phaj vibrator yuav tsum tau siv los co thiab compact lub qhov cub hauv ob sab phlu.Lub qhov cub hauv ob sab phlu yuav tsum tiaj tus, ntom thiab tsis muaj cov khoom xoob.
Post lub sij hawm: Oct-24-2022