Lub ntsiab raw khoom ntawm silicon calcium cored hlau yog silicon calcium hmoov, uas yog siv los ua cov khoom tseem ceeb. Cov tawv nqaij sab nrauv yog cov tawv nqaij steel, uas yog nias los ntawm cov hlau nias tshuab. Nws tuaj yeem ua kom huv hauv daim ntawv ntawm cov hlau sib xyaw, txhim kho cov castability ntawm cov hlau molten, txhim kho cov kev pabcuam ntawm cov hlau, thiab ua kom cov nyiaj rov qab tau zoo dua, txo cov kev siv cov hlau, thiab txo cov nqi ntawm steelmaking, nrog cov txiaj ntsig zoo.
Txoj kev siv yog ntxig cored hlau rau hauv cov kua hlau los yog kua hlau vertically los ntawm lub tshuab pub mis ntawm cov chaw tsim khoom. Cov ntaub ntawv metallurgical xws li cored hlau yuav tau yaj tag nrho thiab tsim cov tshuaj tiv thaiv ntawm qhov zoo tagnrho qhov tob, uas zoo zam cov tshuaj tiv thaiv ntxiv cov ntsiab lus nrog huab cua thiab slag, thiab txhim kho qhov nqus ntawm cov ntaub ntawv metallurgical ntawm cov chaw tsim khoom. Nyob zoo linear tshaj tawm thiab pub kab atherosclerosis yog qhov tseem ceeb ntawm calcium silicon kab noj kab txheej txheem, pub ceev thiab atherosclerosis yog ceev heev los yog qeeb heev yuav cuam tshuam rau cov tub ntxhais tiag tiag yog cov ntshiab calcium hlau melting lub sij hawm thiab qib ntawm oxidation ntawm metallurgical nyhuv cuam tshuam, tus neeg teb xov tooj yuav tsum tau xyuam xim rau cov ntaub ntawv hlau molten, ib zaug tshwm sim, steel dov, yuav tsum tau txuas ntxiv rau cov kab noj, tom qab lub sijhawm luv luv los tiv thaiv kev nchuav. Hlau pub ceev thiab xaim noj atherosclerosis yog qhov tseem ceeb ntawm silicon calcium hlau pub txheej txheem. Kev ceev ceev heev los yog qeeb heev ntawm cov xaim pub mis thiab kev sib dhos yuav cuam tshuam rau lub sijhawm melting thiab oxidation degree ntawm silicon calcium hlau, uas yuav cuam tshuam rau cov nyhuv metallurgical. Yog li ntawd, nyob rau hauv daim ntawv thov ntawm silicon calcium hlau, nws yog ib qhov tsim nyog yuav tau them sai sai rau lub molten steel qhov teeb meem. Cov khoom, plasticity, cuam tshuam toughness thiab fluidity ntawm molten steel tuaj yeem txhim kho los ntawm kev siv cov hlau si-Ca. Nyob rau hauv lub cub tawg refining thev naus laus zis txuas ntxiv txhim kho niaj hnub no, pab txhawb kev txhim kho kev noj qab haus huv txoj kab. Piv nrog cov hmoov txau thiab ncaj qha ntxiv ntawm cov hlau thaiv, kev siv silicon calcium hlau pub tshuab muaj qhov zoo dua. Lub tshuab pub hlau tuaj yeem ua tau zoo tso cov silicon calcium hlau rau hauv txoj haujlwm zoo tshaj plaws ntawm cov hlau molten, hloov cov duab ntawm kev suav nrog, txhim kho cov castability thiab txhua yam khoom ntawm molten steel.
