Hauv kev tsim cov refractory castables, qee cov khoom siv fiber ntau ntawm cov kab sib txawv feem ntau tau ntxiv thiab cov fiber ntau yog qhov peb xa mus rau qhov kub-resistant steel fiber uas yog ua los ntawm cov hlau tsis muaj steel lossis cov hlau tsis muaj cua sov uas muaj cov ntsiab lus xws li chromium nickel. Nws txoj kev tsim khoom tau muab faib ua: steel hlau txiav nias txoj kev, steel thaiv txiav txoj kev thiab molten steel melting txoj kev. Thawj ob txoj kev yog ruaj khov nyob rau hauv zoo thiab siab zog, tab sis tus nqi yog kim dua: txoj kev tom kawg yog yooj yim nyob rau hauv cov txheej txheem, coj txawv txawv nyob rau hauv cov duab, muaj zog nyob rau hauv gripping quab yuam, tsis tshua muaj nqi, thiab muaj ntau manufacturers, yog li nws yog dav. siv.
Cov duab ntawm tshav kub-resistant steel fiber zoo li lub nkoj zoo li tus saggar, nws cov specifications yog 0.2mm × 1.0mm, qhov ntev yog 20mm, 25mm, 30mm thiab 35mm: qib cua sov -Resistant steel fiber, cov qib thoob ntiaj teb kub-resistant steel fiber ntau tau muab faib ua 330, 310, 304, 446, thiab 430, thiab lwm yam, uas zoo ib yam li lub teb chaws tus qauv (GB).
Kev sim thiab kev tsim khoom hauv tsev thiab txawv teb chaws tau ua pov thawj tias nyob rau hauv txhua yam ntawm refractory castable, refractory yas thiab refractory ramming khoom, ntxiv rau qhov loj ntawm 1 feem pua rau 5 feem pua ntawm cov cua sov-resistant steel fiber, tuaj yeem ua tiav cov txiaj ntsig ntawm kev ntxiv dag zog thiab toughening. Txawm li cas los xij, qhov kub thiab txias oxidation tseem ceeb ntawm cov cua sov-resistant steel fiber yog tsawg thiab yuav tsum tsis txhob siv rau qhov kub siab. Txwv tsis pub, vim yog melting thiab oxidation ntawm steel fibers, lub koom haum cov qauv ntawm refractory castables yuav puas los yog puas, uas ua rau poob nyob rau hauv kev pab cuam lub neej ntawm furnaces los yog thermal khoom.
Lub luag haujlwm tseem ceeb ntawm kev ntxiv steel fiber ntau rau refractory castable yog:
(1) txhim kho toughness, txhim kho kev ntxhov siab-tiv thaiv, thiab txhim kho kev ua haujlwm tsis zoo;
(2) Txhim kho thermal poob siab tsis kam, txhim kho kev tawg thiab tawg tsis kam;
(3) Inhibit linear shrinkage tom qab kho, ziab thiab kho cua sov.
Tus nqi ntawm cov hlau fiber ntau ntxiv yog feem ntau 0.6 ~ 2.5 feem pua (ntim piv) yog qhov tsim nyog tshaj.
Qee cov neeg siv khoom hais txog tias tus nqi ntawm cov hlau fiber ntau refractory castable yog nruab nrab ntawm 3 thiab 5 feem pua, uas yog qhov kev txiav txim tsis raug. Vim li cas ho tsis tuaj yeem muaj cov hlau fiber ntau hauv castable loj heev? Vim tias qhov sib ntxiv ntawm cov hlau fiber ntau yuav ua rau lub cev kub thiab cov khoom siv tshuaj lom neeg ntawm cov khoom siv hluav taws xob tsis zoo, xws li steel fiber ntau yuav ua rau cov seem seem ntawm cov castable tom qab kub kub kub. Nyob rau tib lub sijhawm, qhov nce ntawm cov hlau oxide cov ntsiab lus hauv castable txo nws txoj kev yaig, thiab yuav cuam tshuam rau kev ua haujlwm ntawm castable thaum lub sij hawm tsim kho, yog li kev xaiv ntawm qhov sib ntxiv yuav tsum raug txiav txim siab tshaj plaws raws li qhov kub ntawm qhov cub hom.
