Ua rau thiab cov kev daws teeb meem rau cov kab nrib pleb hauv castables thaum lub sijhawm ci

Cov laj thawj rau qhov tawg ntawm cov castables thaum lub sijhawm ci yog qhov nyuaj heev, suav nrog qhov kub ntawm cov khoom siv, qhov zoo ntawm cov khoom siv, kev siv tshuab tsim kho thiab lwm yam. Cov hauv qab no yog kev tshuaj xyuas tshwj xeeb ntawm cov laj thawj thiab cov kev daws teeb meem sib xws:

1. Qhov kub ntawm lub tshuab cua sov sai dhau lawm
Vim li cas:

Thaum lub sijhawm ci cov castables, yog tias qhov cua sov ceev dhau, cov dej sab hauv yuav ua pa sai sai, thiab lub zog ntawm cov pa dej loj heev. Thaum nws tshaj qhov lub zog tensile ntawm cov castable, cov kab nrib pleb yuav tshwm sim.

Kev daws teeb meem:

Tsim kom muaj ib txoj kab ci uas tsim nyog thiab tswj qhov kub raws li cov yam xws li hom thiab tuab ntawm lub castable. Feem ntau hais lus, theem cua sov thawj zaug yuav tsum qeeb, zoo dua tsis pub tshaj 50 ℃ / teev. Thaum qhov kub nce siab, qhov kub tuaj yeem ua kom nrawm dua, tab sis nws kuj yuav tsum tswj tau ntawm kwv yees li 100 ℃ / teev - 150 ℃ / teev. Thaum lub sijhawm ci, siv lub tshuab kaw qhov kub thiab txias los saib xyuas qhov kub hloov pauv hauv lub sijhawm tiag tiag kom ntseeg tau tias qhov kub ua tau raws li qhov yuav tsum tau ua.

2. Teeb meem zoo ntawm cov khoom siv
Vim li cas:

Qhov piv tsis raug ntawm cov khoom sib xyaw thiab hmoov: Yog tias muaj ntau cov khoom sib xyaw thiab hmoov tsis txaus, qhov kev ua tau zoo ntawm lub castable yuav txo qis, thiab cov kab nrib pleb yuav yooj yim tshwm sim thaum ci; ntawm qhov tsis sib xws, hmoov ntau dhau yuav ua rau tus nqi shrinkage ntawm lub castable thiab kuj yooj yim ua rau muaj kab nrib pleb.
Kev siv cov khoom ntxiv tsis raug: Hom thiab qhov ntau ntawm cov khoom ntxiv muaj feem cuam tshuam tseem ceeb rau kev ua haujlwm ntawm lub castable. Piv txwv li, kev siv cov dej txo ntau dhau yuav ua rau muaj kev ntws ntau dhau ntawm lub castable, ua rau muaj kev sib cais thaum lub sijhawm khov, thiab cov kab nrib pleb yuav tshwm sim thaum lub sijhawm ci.
Kev daws teeb meem: 

Tswj xyuas qhov zoo ntawm cov khoom siv raw, thiab ntsuas qhov hnyav ntawm cov khoom siv raw xws li cov pob zeb sib xyaw, hmoov thiab cov khoom ntxiv raws li cov qauv uas cov chaw tsim khoom xav tau. Tsis tu ncua tshuaj xyuas thiab tshuaj xyuas cov khoom siv raw kom paub tseeb tias lawv qhov loj me, qib thiab cov tshuaj lom neeg ua tau raws li qhov yuav tsum tau ua.

Rau cov khoom siv raw tshiab, ua ntej ua qhov kev sim me me los sim qhov kev ua tau zoo ntawm cov castable, xws li fluidity, lub zog, shrinkage, thiab lwm yam, kho cov mis thiab cov tshuaj ntxiv raws li cov txiaj ntsig ntawm kev xeem, thiab tom qab ntawd siv lawv rau ntawm qhov loj tom qab lawv tsim nyog.

3. Teeb meem ntawm kev tsim kho
Vim li cas:

Kev sib xyaw tsis sib xws:Yog tias lub castable tsis sib xyaw sib npaug thaum lub sijhawm sib tov, cov dej thiab cov khoom ntxiv hauv nws yuav tsis sib npaug, thiab cov kab nrib pleb yuav tshwm sim thaum lub sijhawm ci vim muaj kev sib txawv ntawm kev ua tau zoo hauv ntau qhov chaw sib txawv.
Kev co tsis sib zog: Thaum lub sijhawm nchuav, kev co tsis sib zog yuav ua rau cov qhov hws thiab cov qhov khoob sab hauv lub castable, thiab cov khoom tsis muaj zog no yuav tawg thaum ci.

Kev saib xyuas tsis raug:Yog tias cov dej ntawm qhov chaw ntawm lub castable tsis tau khaws cia tag nrho tom qab nchuav, cov dej ua pa sai dhau, uas yuav ua rau qhov chaw ntsws thiab tawg ntau dhau.

Kev daws teeb meem:

Siv cov khoom siv sib tov thiab tswj lub sijhawm sib tov kom nruj. Feem ntau hais lus, lub sijhawm sib tov ntawm lub tshuab sib tov yuam tsis pub tsawg dua 3-5 feeb kom ntseeg tau tias cov khoom siv sib tov sib npaug. Thaum lub sijhawm sib tov, ntxiv dej kom tsim nyog kom cov khoom siv sib tov mus txog qhov dej kom tsim nyog.
Thaum co, siv cov cuab yeej co kom tsim nyog, xws li cov pas nrig co, thiab lwm yam, thiab co rau hauv ib qho kev txiav txim thiab qhov chaw kom ntseeg tau tias lub castable ntom. Lub sijhawm co yog qhov tsim nyog rau tsis muaj npuas thiab tog rau ntawm qhov chaw ntawm lub castable.

Tom qab nchuav dej tas, yuav tsum tau ua kom qhuav raws sijhawm. Siv cov yas zaj duab xis, cov ntaub pua plag ntub dej thiab lwm txoj hauv kev los ua kom qhov chaw ntawm lub castable noo, thiab lub sijhawm kho feem ntau tsis pub tsawg dua 7-10 hnub. Rau cov castables loj lossis castables uas tsim nyob rau hauv qhov chaw kub siab, tshuaj tsuag kho thiab lwm yam kev ntsuas kuj tseem siv tau.

4. Teeb meem ib puag ncig ci khoom noj
Ua rau:
Qhov kub ntawm ib puag ncig qis dhau:Thaum ci hauv qhov chaw kub tsawg, qhov ceev ntawm cov castable yog qeeb thiab qhuav, thiab nws yooj yim kom khov, ua rau muaj kev puas tsuaj rau sab hauv, yog li ntawd tawg.

Kev ua pa tsis zoo:Thaum lub sijhawm ci, yog tias qhov cua tsis zoo, cov dej uas tau evaporated los ntawm sab hauv ntawm lub castable yuav tsis tuaj yeem tawm hauv lub sijhawm, thiab sib sau ua ke sab hauv los ua kom muaj kev kub siab, ua rau muaj kab nrib pleb.

Kev daws teeb meem:
Thaum qhov kub thiab txias tsawg dua 5 ℃, yuav tsum tau ua kom sov, xws li siv lub tshuab cua sov, cov yeeb nkab pa dej, thiab lwm yam los ua kom qhov chaw ci sov ua ntej, kom qhov kub thiab txias nce mus txog 10 ℃ -15 ℃ ua ntej ci. Thaum lub sijhawm ci, qhov kub thiab txias yuav tsum tau khaws cia kom ruaj khov kom tsis txhob muaj kev hloov pauv kub ntau dhau.

Teeb tsa cov qhov cua kom tsim nyog kom muaj cua nkag tau zoo thaum lub sijhawm ci. Raws li qhov loj thiab cov duab ntawm cov khoom siv ci, ntau lub qhov cua tuaj yeem teeb tsa, thiab qhov loj ntawm cov qhov cua tuaj yeem hloov kho raws li qhov xav tau kom ntseeg tau tias cov dej noo tuaj yeem tawm mus tau zoo. Tib lub sijhawm, yuav tsum ceev faj kom tsis txhob muab cov castables ncaj qha rau ntawm cov qhov cua kom tsis txhob muaj kab nrib pleb vim huab cua hauv zos qhuav sai dhau.