Yuav siv li casCa-Si Cored Hlau
I. Yam yuavtsum tau kawm uantej thiab npaj
Kev npaj khoom siv: Xyuas kom cov hlau feeder ua haujlwm ruaj khov. Calibrate lub kaum sab xis thiab qhov ntev ntawm txoj kev qhia lub raj kom lav kev noj qab haus huv ntawm cov hlau cored tsis muaj jamming. Tshawb xyuas lub ladle kom nruj thiab kub tsis kam tiv thaiv molten steel to los yog kub poob.
Cored Hlau Kev Tshawb Fawb: Xyuas kom tseeb tias cov specifications (xaim txoj kab uas hla, ntev) thiab tshuaj muaj pes tsawg leeg ntawm cov calcium -silicon cored hlau raws li cov txheej txheem smelting. Txheeb xyuas cov hlau saum npoo kom tsis txhob muaj kev puas tsuaj, corrosion ntawm sab nrauv steel sawb los yog to ntawm core hmoov. Hloov
tam sim ntawd yog tias pom muaj teeb meem zoo.
Molten Steel Pretreatment: Ua kom tiav ua ntej dephosphorization thiab kub nce ua ntej tapping. Tswj lub molten steel kub nyob rau hauv 1500-1600℃(kho raws li qib steel) thiab khaws cov slag thickness ntawm lub molten steel nto hauv qab no 50 hli kom txo slag cuam tshuam nrog cov cored hlau cov tshuaj tiv thaiv.
II. Cov kauj ruam ua haujlwm tseem ceeb
Loading thiab Calibration:Ruaj ntseg lub cored hlau spool ntawm lub feeder tus txhawb nqa ncej. Xov hlau los ntawm txoj kev coj lub raj. Kho qhov kev pub mis ceev rau cov txheej txheem predetermined (feem ntau yog 2-6 m / s, kho raws li txoj kab uas hla thiab ladle muaj peev xwm), kom ntseeg tau tias ib tug uniform thiab ruaj khov ceev.
Feeding Quantity Control:Xam tag nrho cov hlau kom muaj nuj nqis raws li molten steel qhov hnyav, lub hom phiaj muaj pes tsawg leeg (calcium thiab silicon cov ntsiab lus), thiab qhov kev xav tau rov qab los. Cov qauv siv: Hlau Quantity (kg)=Molten Steel Nyhav (t) × Lub Hom Phiaj Si / Ca Nce (%) ÷ Si / Ca Cov Ntsiab Lus hauv Hlau (%) ÷ Tus Nqi Rov Qab (%).Piv txwv li: Rau 100t ntawm cov hlau xav tau 0.03% calcium nce, nrog cov hlau Ca ntsiab lus ntawm 28% thiab tus nqi rov qab ntawm 40%, cov hlau ntau=100 × 0.03% ÷ 28% ÷ 40% ≈ 26.8kg.
Kev soj ntsuam xyuas: Saib xyuas lub molten steel nto thaum pub mis. Uniform npuas emission (CO thiab SO₂ gases los ntawm deoxidation thiab desulfurization cov tshuaj tiv thaiv) qhia ib txwm cov tshuaj tiv thaiv. Nyob rau hauv cov ntaub ntawv ntawm tsausmuag splashing los yog tsis muaj npuas, tam sim ntawd kho qhov ceev ceev los yog nres lub lag luam los xyuas cov teeb meem nrog molten steel kub los yog cored hlau zoo.
III. Txheej txheem tswj thiab ceev faj
Kev tswj ceev thiab qhov tob: Kev pub noj ceev ceev heev yuav ua rau cov hlau tsis xeb, thaum qeeb qeeb qeeb tuaj yeem ua rau oxidation ntawm cov hlau cored. Kho dynamically raws li txoj kab uas hla (pom zoo: 2-3m / s rau 9mm txoj kab uas hla, 4-6m / s rau 16mm txoj kab uas hla). Xyuas kom tiav rau hauv lub cev ntawm cov hlau cored hauv molten steel kom tsis txhob muaj kev sib cuag nrog slag.
Kub thiab sijhawm tswj: Tsawg molten steel kub ua rau tsis tiav melting ntawm cored hlau thiab txo cov tshuaj tiv thaiv efficiency; kub kub intensifies volatilization ntawm alloying ntsiab thiab txo tus nqi rov qab. Tom qab pub mis, tso cai rau cov hlau molten sawv ntsug li 10-15 feeb (tuav lub sijhawm) kom paub meej cov tshuaj tiv thaiv txaus thiab ua tiav ntab lossis hloov pauv ntawm kev suav nrog.
Kev Ua Haujlwm Zoo: Cov neeg ua haujlwm yuav tsum hnav cov khoom siv tiv thaiv kub ({0}} cov khaub ncaws tiv thaiv, daim npog ntsej muag, hnab looj tes), nyob deb ntawm lub qhov ncauj ntawm lub qhov ncauj thiab coj lub qhov hluav taws xob los tiv thaiv scalding los ntawm splashing hlau. Txwv tsis pub cov neeg ua haujlwm los ntawm txoj kev xaim pub mis thaum lub sijhawm ua haujlwm kom tsis txhob muaj kev phom sij rau kev siv tshuab.
Multi-Batch Feeding: Rau loj- nplai ntxiv ntawm cov khoom alloying, faib ua 2-3 batch nrog 5-feeb intervals ntawm batch. Tsis txhob muaj kev kub ntxhov tshwm sim los ntawm kev pub noj ib zaug ntau dhau los txhawm rau txhim kho kev ruaj ntseg ntawm lub caij rov qab los.
1.Tom qab lub sijhawm tuav tom qab xaim pub, coj cov qauv los kuaj cov hlau cov calcium thiab silicon cov ntsiab lus thiab suav nrog morphology. Yog hais tias lub hom phiaj muaj pes tsawg leeg tsis ua tau raws li, ua cov khoom siv hlau ntxiv raws li cov txiaj ntsig kev xeem (xws li ntsuas kom muaj nuj nqis siv cov qauv saum toj no).
2.Saib xyuas seb lub tundish nozzle tseem tsis muaj kev cuam tshuam thaum nruam casting. Yog hais tias clogging tseem, kho cov hlau noj kom muaj nuj nqis los yog cov txheej txheem pretreatment kom optimize inclusion modification.
3.Sau cov ntsiab lus tseem ceeb los ntawm kev ua haujlwm (xaim kom muaj nuj nqis, ceev, steel kub, tus nqi rov qab) los tsim cov txheej txheem database, muab lub hauv paus rau kev ua kom zoo dua yav tom ntej.
