Kev siv cov silicon hauv silicon-calcium alloys:
Silicon yog cov khoom qub uas muaj ntau yam kev siv, tab sis nyob rau hauv calcium-silicon alloys, peb siv nws feem ntau hauv kev lag luam steel. Cov silicon nyob rau hauv cov calcium-silicon alloy tuaj yeem txo cov hlau molten zoo heev thiab yog cov muaj zog txo tus neeg sawv cev vim tias muaj cov pa ntau hauv cov hlau molten thaum lub sij hawm smelting. Yog tias muaj cov pa ntau dhau, ntau cov oxides raug tsim, uas cuam tshuam rau qhov zoo ntawm cov hlau. Calcium-silicon alloy tuaj yeem tshem tawm cov pa tawm sai sai thaum tsim cov silica, yog li nws muaj peev xwm ua kom huv si molten hlau thiab txhim kho nws cov khoom zoo.
Kev siv cov calcium hauv calcium-silicon alloys:
Calcium yog ib qho tseem ceeb hauv kev tsim cov hlau. Nws lub hom phiaj tseem ceeb yog txhawm rau txhim kho qhov fluidity ntawm molten steel thiab ua kom lub zog thiab txiav cov khoom ntawm cov hlau tiav. Kev siv cov calcium-silicon alloys tuaj yeem tiv thaiv lub qhov dej ntawm qhov txhaws thiab zoo dua ntxuav cov hlau molten los ntawm impurities. Kev lim dej txhim kho cov khoom ntawm cov hlau tiav.