Refractory plastics tsis yog cov khoom siv ua ntej. Yog tias cov roj ntau dhau, cov khoom yuav nthuav dav thiab nws lub zog yuav txo qis.
Ua ntej koj xav paub txog cov ntaub ntawv yas refractory, koj yuav tsum paub cov hom refractory plastics.
Refractory plastics muab faib ua cov khoom sib txawv xws li av nplaum, siab alumina, aluminium silicon carbide, silicon, magnesia, thiab lwm yam. Cov binders muaj xws li dej iav thiab phosphoric acid. Hais txog kev siv tiag tiag, phosphoric acid cement yog siv ntau zaus, tab sis cov yas refractory ua ke nrog phosphate cement yuav tsum tau daig, thiab lub sij hawm daig yuav tsum tsis pub tsawg dua 18-24 teev.
Yog vim li cas yog vim li cas refractory plastics yog daig
Yog vim li cas vim li cas cov yas refractory yuav tsum tau daig yog tias muaj qee yam impurities hauv cov khoom siv raw ntawm cov yas. Cov impurities no yuav hnov mob nrog phosphoric acid binder, thiab ntau cov pa roj yuav tsim tom qab cov tshuaj tiv thaiv. Cov pa roj yuav nthuav dav rau sab hauv ntawm cov yas, ua rau cov qauv ntawm cov khoom yog xoob thiab nws lub zog yuav txo qis tom qab hardening. Lub hom phiaj ntawm cov cuab yeej cuab tam yog tso cai rau cov roj tso tawm tag nrho tom qab muab tso rau lub sijhawm. Tom qab cov roj tso tawm los yog thaum lub sij hawm tsim kho, tus neeg sawv cev txuas ntxiv ntxiv, kom cov khoom siv yas tuaj yeem siv tau tag nrho.
Yog hais tias nws yog ib tug dej-iav bonded yas, ib tug binding neeg sawv cev yuav muab ntxiv thaum lub sij hawm tsim kho ntawm qhov chaw. Tam sim no, vim kev tsim kho thev naus laus zis, extruder yog siv los extrude refractory plastics rau hauv me me ua ntej siv, thiab tau ntim thiab khaws cia rau hauv hnab yas. Lawv tuaj yeem qhib thiab siv tau thaum siv, yog li tsis muaj teeb meem ntawm cov khoom dai. Vim tias thaum lub sijhawm khaws cia, cov khoom siv tau raug daig. Txoj kev no ntawm kev tsim extrusion feem ntau tsuas yog siv rau cov khoom xa tawm.
Refractory plastics siv hauv Suav teb tsis yog extruded. Ib feem ntawm kev sib khi tus neeg sawv cev yog ntxiv thaum lub sijhawm tsim khoom, thiab cov khoom tau raug daig thaum thauj. Thaum siv, nws tau qhib thiab tus neeg sawv cev txuas ntxiv ntxiv rau kev sib xyaw, thiab nws tuaj yeem siv ncaj qha. Tab sis nws yuav tsum tau muab sau tseg tias lub sij hawm yuav tsum tau tswj tom qab 18-24 teev. Yog tias nws yog kev thauj mus los luv, tsuas yog tswj lub sijhawm. Cov khoom ntim rau ntawm qhov chaw ncua kev ua haujlwm. Yog tias cov ntaub ntawv raug daig ua ntej, tsis tas yuav ntxiab cov ntaub ntawv ntawm qhov chaw, uas txuag lub sijhawm thiab ua tau raws li kev tsim kho.
