Ho Hloekisa Ts'episeho ea Tšepe Ho Etsa Metallurgy Motsoako Motsoako oa Silicon Khalsiamo Alloy Khalsiamo Silicon Alloy
tshebediso
E le motsoako oa deoxidizer (deoxidization, desulphurization le degassing) E sebelisoa ho etsa tšepe, ho qhibilihisa alloy. E le inoculant, hape e sebelisoa ho hlahisa tlhahiso.
Boemo ba 'mele:
Karolo ea ca-si e bohlooho bo bobebe e hlahileng ka sebopeho se hlakileng sa lijo-thollo. Lump, lijo-thollo le phofo.
Sephutheloana:
k'hamphani ea rona e ka fana ka mefuta e fapaneng ea lijo-thollo tse boletsoeng ho latela litlhoko tsa basebelisi, tse kentsoeng ka masela a polasetiki le mokotla oa lithane.
Thepa le melemo ea ferrosilicon
Binary alloy e entsoeng ka silicon le calcium ke ea sehlopha sa ferroalloys. Likarolo tsa eona tse ka sehloohong ke silicon le calcium, hape e na le litšila tse kang tšepe, aluminium, carbon, sulfur le phosphorus ka bongata bo sa tšoaneng. Ka indasteri ea tšepe le tšepe, e sebelisoa e le motsoako oa calcium, deoxidizer, desulfurizer le denaturant bakeng sa li-inclusions tse se nang tšepe. E sebelisoa e le ente le denaturant indastering ea tšepe ea tšepe. Motheong oa silicon-calcium alloy, likarolo tse ling li eketsoa ho etsa motsoako oa ternary kapa oa multi-element composite alloy. Tse kang Si-Ca-Al; Si-Ca-Mn; Si-Ca-Ba, joalo-joalo, e sebelisoa e le deoxidizer, desulfurizer, denitrification agent le alloying agent ka tšepe le tšepe ea tšepe.
Calcium ke tšepe ea lefats'e ea alkaline e boima ba athomo ea 40.08, sebopeho sa ka ntle sa elektroniki sa 4S2, density (20 ° C) ea 1.55g / cm3, ntlha e qhibilihisang ea 839±2 ° C, le ntlha e belang ea 1484 °. C. Kamano pakeng tsa khatello ea mouoane ea khalsiamo le mocheso ke
lnpCa=25.7691-20283.9T-1-1.0216lnT
Moo pCa e leng khatello ea mouoane oa calcium, Pa; T ke mocheso, K. Silicon le calcium li etsa metsoako e meraro, e leng CaSi, Ca2Si le CaSi2. CaSi (41.2% Si) e tsitsitse ka mocheso o phahameng. Ca2Si (29.5%Si) ke motsoako oa peritectic o entsoeng pakeng tsa Ca le CaSi mocheso o ka tlase ho 910°C. CaSi2 (58.36%Si) ke motsoako oa peritectic o entsoeng pakeng tsa CaSi le Si mocheso o ka tlase ho 1020 ° C. Sebopeho sa mekhahlelo ea li-alloys tsa silicon-calcium tse hlahisoang indastering ke hoo e ka bang 77% CaSi2, 5% ho 15% CaSi, mahala Si <20%, le SiC <8%. Boima ba alloy ea silicon-calcium e nang le 30% ho isa ho 33% ea Ca le hoo e ka bang 5% ea Fe e ka ba 2.2g/cm3, 'me mocheso o qhibilihang o tloha ho 980 ho ea ho 1200 ° C.
Karolo ea lik'hemik'hale
Kereiti | Khemikhale % | |||||
Ca | Si | C | AI | P | S | |
≥ | ≤ | |||||
Ca30Si60 | 30 | 60 | 1.0 | 2.0 | 0.04 | 0.06 |
Ca30Si58 | 30 | 58 | 1.0 | 2.0 | 0.04 | 0.06 |
Ca28Si55 | 28 | 55 | 1.0 | 2.4 | 0.04 | 0.06 |
Ca25Si50 | 25 | 50 | 1.0 | 2.4 | 0.04 | 0.06 |