ferrosilicon hmoov
Silicon txhawb graphitization hauv cam khwb cia hlau. Hauv cam khwb cia hlau, silicon yog cov khoom siv hlau uas txhawb nqa graphitization. Nws lub peev xwm los txhawb graphitization yog peb zaug ntawm npib tsib xee thiab tsib npaug ntawm tooj liab. Thiab txawm hais tias nyob rau hauv cov kua los yog cov khoom cam khwb cia hlau, kev sib xyaw ntawm silicon thiab hlau muaj zog dua cov pa roj carbon. Tsis tas li ntawd, kua cam khwb cia hlau muaj silicon, uas txo cov solubility ntawm carbon. Qhov siab dua cov ntsiab lus ntawm silicon hauv cov hlau molten thiab qis dua cov ntsiab lus carbon, cov pa roj carbon ntau yuav raug nyem tawm.
Silicon hmoov 99.9% Min
Thaum lub molten hlau yog ib tug hypereutectic muaj pes tsawg leeg, cov ntsiab lus silicon yog siab. Thaum lub sij hawm solidification txheej txheem, ntau carbon yog precipitated nyob rau hauv daim ntawv ntawm cov thawj graphite kom txog rau thaum cov seem molten hlau mus txog ib tug eutectic muaj pes tsawg leeg thiab undergoes eutectic transformation; cov hlau molten yog hypoeutectic.
Si hmoov
Thaum cov crystal muaj pes tsawg leeg yog siab, silicon yog enriched nyob rau hauv thawj austenite thaum lub sij hawm solidification txheej txheem. Thaum lub sij hawm eutectic transformation, silicon yog enriched nyob rau hauv thaum ntxov crystallized eutectic austenite, inhibiting lub synthesis ntawm cementite los ntawm carbon thiab hlau, txhim khu lub diffusion tus nqi ntawm carbon nyob rau hauv austenite, thiab txhawb cov nag lossis daus ntawm carbon nyob rau hauv daim ntawv ntawm eutectic graphite; Thaum lub sij hawm hloov pauv eutectoid, cov khoom siv ntawm silicon hauv austenite tseem inhibits qhov tsim ntawm cementite ntawm cov pa roj carbon thiab hlau, txhim kho cov pa roj carbon diffusion hauv austenite, thiab txhawb cov nag lossis daus ntawm carbon nyob rau hauv daim ntawv ntawm eutectoid graphite.
