Ib tug binary alloy muaj li ntawm silicon thiab calcium belongs rau qeb ntawm ferroalloys.Nws cov khoom tseem ceeb yog silicon thiab calcium, thiab nws kuj muaj impurities xws li hlau, txhuas, carbon, sulfur thiab phosphorus nyob rau hauv ntau yam.Hauv kev lag luam hlau thiab hlau, nws yog siv los ua calcium additive, deoxidizer, desulfurizer thiab denaturant rau non-metallic inclusions.Nws yog siv los ua inoculant thiab denaturant hauv kev lag luam cam khwb cia hlau.
Kev siv:
Raws li compound deoxidizer (deoxidization, desulphurization thiab degassing) Siv hauv steelmaking, alloy smelting.Raws li inoculant, kuj siv nyob rau hauv casting ntau lawm.
Lub cev lub xeev:
Cov seem ca-si yog lub teeb grey uas tshwm sim nrog pom tseeb cov duab zoo.Lump, nplej thiab hmoov.
Pob:
peb lub tuam txhab tuaj yeem muab ntau yam kev teev tseg hauv cov khoom raws li cov neeg siv khoom xav tau, uas yog ntim nrog cov hnab yas thiab lub hnab ntim.
Chemical Element:
| Qib | Chemical cov ntsiab lus% | |||||
| Ca | Si | C | AI | P | S | |
| ≥ | ≤ | |||||
| Ca31 Si 60 | 31 | 58-65 : kuv | 0.8 ua | 2.4 | 0.04 ib | 0.06 ib |
| Ca28 Si 60 | 28 | 55-58 : kuv | 0.8 ua | 2.4 | 0.04 ib | 0.06 ib |
| Ca24 Si 60 | 24 | 50-55 | 0.8 ua | 2.4 | 0.04 ib | 0.04 ib |
Lwm yam impurities raug teev raws li lub hom phiaj sib txawv.Tsis tas li ntawd, nyob rau hauv lub hauv paus ntawm silicon-calcium alloys, lwm cov ntsiab lus tau ntxiv rau daim ntawv ternary los yog multi-element composite alloys.Xws li Si-Ca-Al;Si-Ca-Mn;Si-Ca-Ba, thiab lwm yam, siv los ua deoxidizer, desulfurizer, denitrification tus neeg saib xyuas thiab alloying tus neeg sawv cev hauv hlau thiab hlau metallurgy.
Txij li calcium muaj kev sib raug zoo nrog oxygen, sulfur, hydrogen, nitrogen thiab carbon nyob rau hauv molten steel, silicon-calcium alloys 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 molten steel, uas muaj ib tug stirring nyhuv ntawm molten steel thiab yog zoo rau lub floating ntawm non-metallic inclusions.Tom qab silicon-calcium 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, silicon-calcium alloy yog siv los tsim cov hlau huv si, cov hlau zoo uas tsis tshua muaj oxygen thiab cov ntsiab lus sulfur, thiab tshwj xeeb kev ua haujlwm steel nrog cov pa oxygen thiab cov ntsiab lus sulfur tsis tshua muaj.Qhov sib ntxiv ntawm silicon-calcium alloy tuaj yeem tshem tawm cov nodulation ntawm cov hlau nrog txhuas raws li qhov kawg deoxidizer ntawm lub ladle nozzle, thiab cov clogging ntawm lub nozzle ntawm tundish ntawm nruam casting |ua hlau.Nyob rau hauv lub tshuab refining sab nraum lub cub tawg ntawm steel, silicon-calcium hmoov los yog core hlau yog siv rau deoxidation thiab desulfurization kom txo tau cov ntsiab lus ntawm oxygen thiab sulfur nyob rau hauv steel mus rau ib tug tsawg heev theem;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 deoxidation thiab purification, silicon-calcium alloy tseem ua lub luag haujlwm inoculating, uas pab tsim cov nplua-grained lossis kheej kheej graphite;ua rau cov graphite nyob rau hauv grey cam khwb cia hlau tusyees faib, txo cov whitening nyiam;thiab tuaj yeem nce silicon thiab desulfurize, txhim kho cam khwb cia hlau zoo.
Lub sij hawm xa tuaj: Plaub Hlis-11-2023
