Dab tsi yog Kev Siv Calcium Silicon Alloy?

Txij li calcium muaj kev sib raug zoo nrog oxygen, sulfur, hydrogen, nitrogen thiab carbon nyob rau hauv molten steel, calcium silicon alloy yog tsuas yog siv rau deoxidation, degassing thiab fixation ntawm leej faj nyob rau hauv molten hlau. Calcium silicon ua rau muaj zog exothermic nyhuv thaum ntxiv rau molten hlau.

Calcium hloov mus rau hauv calcium vapor nyob rau hauv cov hlau molten, uas ua rau cov hlau molten thiab muaj txiaj ntsig zoo rau cov ntab ntawm cov khoom tsis yog hlau. Tom qab calcium silicon alloy yog deoxidized, non-metallic inclusions nrog cov khoom loj dua thiab yooj yim rau ntab yog tsim, thiab cov duab thiab cov khoom ntawm non-metallic inclusions kuj hloov. Yog li ntawd, calcium silicon alloy yog siv los tsim cov hlau huv si, cov hlau zoo uas tsis tshua muaj cov pa oxygen thiab cov ntsiab lus sulfur, thiab cov hlau tshwj xeeb uas muaj cov pa oxygen thiab cov ntsiab lus sulfur tsis tshua muaj. Ntxiv cov calcium silicon alloy tuaj yeem tshem tawm cov teeb meem xws li nodules ntawm lub ladle nozzle ntawm cov hlau siv txhuas ua cov deoxidizer zaum kawg, thiab cov blockage ntawm tundish nozzle hauv nruam steel casting | ua hlau.

Nyob rau hauv lub tshuab hluav taws xob sab nraud ntawm cov hlau, calcium silicate hmoov los yog core hlau yog siv rau deoxidation thiab desulfurization los txo cov pa oxygen thiab sulfur cov ntsiab lus hauv cov hlau kom tsawg heev; nws tseem tuaj yeem tswj cov ntawv sulfide hauv cov hlau thiab txhim kho kev siv cov calcium. Hauv kev tsim cov cam khwb cia hlau, ntxiv rau deoxidizing thiab purifying, calcium silicon alloy tseem ua lub luag haujlwm tu, pab tsim cov nplua-grained lossis kheej kheej graphite; nws muaj peev xwm sib npaug faib graphite nyob rau hauv grey cam khwb cia hlau thiab txo qhov nyiam ntawm whitening; nws tuaj yeem ua kom cov silicon thiab desulfurize, txhim kho qhov zoo ntawm cov hlau cam khwb cia.