Kev siv lub ladle hais txog kev ua kom ntseeg tau tias yuav tsis muaj teeb meem xws li ladle burnout, ladle plhaub softening, thiab ladle ntog thaum lub sij hawm tsim kev pab cuam lub neej ntawm lub ladle hauv ob sab phlu. Thaum xav txog kev siv lub ladle, nws txoj kev pab cuam lub neej yuav tsum tau txiav txim siab ua ntej, uas yog, kom ntseeg tau tias qhov kub thiab txias ntawm cladding yog tsawg dua qhov kub ntawm cov khoom siv cladding thaum lub sij hawm kev pab cuam lub neej ntawm cov ntaub, uas feem ntau yuav tsum tsawg dua. tshaj 300 ~ 350 degree (lub creep kub ntawm carbon steel yog 300 ~ 350 degree, thiab creep kub ntawm alloy hlau yog 350 ~ 400 degree).
Xaivrefractory bricksrau ladle hauv ob sab phlu yog ib qho haujlwm tseem ceeb vim tias nws cuam tshuam ncaj qha rau kev pabcuam lub neej ntawm lub ladle, kev ua haujlwm ntawm cov txheej txheem steelmaking, thiab qhov zoo ntawm cov hlau molten. Kev xaiv ntawm cov ntaub ntawv refractory rau ladle hauv ob sab phlu yog feem ntau raws li kev siv ntawm lub ladle, xws li qhov kub thiab txias ntawm cov hlau molten, tshuaj muaj pes tsawg leeg, hom kev ua haujlwm, thiab kev lag luam. Hauv qab no yog cov lus piav qhia ntxaws txog kev xaiv cov khoom siv refractory rau ladle hauv ob sab phlu:
1. Cov qauv hauv ob sab phlu
Cov txheej txheej ntawm lub ladle feem ntau yog tsim los ntawm cov txheej txheem ua haujlwm, txheej txheej ruaj khov, thiab txheej txheej insulating: cov txheej txheem ua haujlwm yog nyob rau hauv kev sib cuag ncaj qha nrog cov hlau molten thiab feem ntau raug kub siab thiab tshuaj yaig. Cov txheej txheem mus tas li yog tom qab txheej txheej ua haujlwm, muab qee yam kev txhawb nqa thiab kev tiv thaiv tshav kub. Cov txheej rwb thaiv tsev yog nyob rau sab nrauv kom txo tau cov cua sov.
2. Cov ntaub ntawv hauv ob sab phlu thiab lawv cov yam ntxwv
Magnesium carbon cib muaj pes tsawg leeg: magnesia (MgO) thiab carbon (C). Nws muaj siab refractoriness, siab thermal shock stability thiab slag yaig kuj. Nws yog siv rau ladles uas yuav tsum tau siab slag yaig kuj thiab thermal shock stability, xws li zoo tib yam steelmaking thiab huv si steel ntau lawm.
Aluminium magnesium carbon refractory bricks muaj pes tsawg leeg bauxite (Al₂O₃), magnesia (MgO) thiab carbon (C). Nws muaj qhov zoo ntawm magnesium carbon bricks thiab siab alumina cib, zoo thermal shock stability thiab muaj zog oxidation kuj. Nws yog tsim rau ladles uas yuav tsum tau zoo slag yaig kuj thiab thermal shock kuj.
High alumina bricks muaj bauxite nrog cov ntsiab lus txhuas ntau dua. High refractoriness, zoo mechanical zog, tab sis tsis zoo slag yaig kuj. Nws yog tsim rau cov ladles zoo tib yam, tshwj xeeb tshaj yog rau alkaline lossis tsis muaj zog acidic slag ib puag ncig.
Magnesium spinel cib yog alumina spinel (MgAl₂O₄) tsim los ntawm bauxite thiab magnesia. Nws muaj qhov zoo slag yaig tsis kam, thermal poob siab tsis kam thiab lub zog muaj zog. Nws yog tsim rau huv steel ntau lawm thiab xav tau steelmaking txheej txheem.
Zircon refractory cib yog tsim los ntawm zirconium oxide (ZrO₂). Nws yog resistant rau kub kub thiab tshuaj erosion, tab sis tus nqi yog kuj siab. Nws yog siv nyob rau hauv tshwj xeeb steel ntau lawm los yog ladles nyob rau hauv high kub tej yam kev mob.
Casting cov ntaub ntawv thiab tshuaj tsuag txheej muaj bauxite, magnesia thiab binders. Nws yog ib qho yooj yim los tsim thiab tuaj yeem tsim seamless hauv ob sab phlu kom txo cov txheej txheem tsis xws luag. Nws yog siv los kho lossis tsim cov kab nrog cov duab nyuaj.
