Cov nyhuv ntawm silicon hauv cam khwb cia hlau

Silicon hauv cam khwb cia hlau feem ntau yog ntxiv los ntawm ferrosilicon alloy.Ferrosilicon alloyyog ib qho ferro alloy uas muaj qee qhov kev faib ua feem ntawm silicon, feem ntau yog tsim los ntawm cov hlau thiab silicon, uas tuaj yeem muab cov khoom siv silicon uas yuav tsum tau ua los txhim kho kev ua haujlwm ntawm cam khwb cia hlau.

Common ferro silicon alloys yog raws li nram no

Tsawg silicon ferrosilicon

Cov ntsiab lus silicon feem ntau yog nyob nruab nrab ntawm 15% -30%, uas yog tsim rau kev tsim ntawm qee cov ntsiab lus ntawm silicon cam khwb cia hlau.

Nruab nrab silicon ferrosilicon

Cov ntsiab lus ntawm silicon yog li 30% -50%, uas feem ntau yog siv los ua cov hlau cam khwb cia grey.

Siab silicon ferrosilicon

Cov ntsiab lus silicon feem ntau yog nyob nruab nrab ntawm 50%-90%, uas yog siv los tsim cov silicon cam khwb cia hlau, tshwj xeeb tshaj yog muaj zog cam khwb cia hlau los yog cov cua sov cam khwb cia hlau.

Silicon aluminium alloy (FeSiAl)

Qee qhov xwm txheej, tshwj xeeb tshaj yog thaum tsim cov hlau cam khwb cia kub lossis cam khwb cia hlau nrog kev ua haujlwm tshwj xeeb, silicon aluminium alloy kuj tseem siv tau los ua cov khoom ntxiv. Silicon aluminium alloy muaj ob qho tib si aluminium thiab silicon ntsiab. Ntxiv nrog rau kev muab lub luag haujlwm ntawm silicon, nws tuaj yeem txhim kho oxidation tsis kam thiab corrosion kuj ntawm cam khwb cia hlau.

Silicon feem ntau yog ntxiv rau cam khwb cia hlau raws li cov khoom siv alloying, thiab muaj cov haujlwm tseem ceeb hauv qab no:

Txhim kho fluidity:

Silicon tuaj yeem txhim kho qhov fluidity ntawm cam khwb cia hlau, ua kom yooj yim sau cov pwm thaum lub sij hawm casting txheej txheem, txo qhov pores thiab inclusions ntawm lub casting, thiab txhim kho qhov zoo ntawm lub casting.

Txhawb nqa graphitization:

Silicon yog ib qho tseem ceeb tshaj plaws graphitizing ntsiab hauv cam khwb cia hlau. Nws tuaj yeem txhawb nqa nag lossis daus ntawm graphite hauv cam khwb cia hlau, tshwj xeeb tshaj yog nyob rau hauv grey cam khwb cia hlau. Graphitization pab cov txheej txheem thiab hnav tsis kam ntawm cov hlau cam khwb cia, thiab txhim kho nws cov kev cuam tshuam thiab toughness.

Txhim kho oxidation tsis kam ntawm cam khwb cia hlau:

Silicon tuaj yeem txhim kho oxidation tsis kam ntawm cam khwb cia hlau, tshwj xeeb tshaj yog nyob rau hauv qhov kub thiab txias ib puag ncig, qhov twg silicon tuaj yeem tsim cov oxide zaj duab xis ruaj khov los tiv thaiv cam khwb cia hlau los ntawm oxidation ntxiv.

Muaj feem xyuam rau hardness thiab lub zog ntawm cam khwb cia hlau:

Cov ntsiab lus ntawm silicon hauv cam khwb cia hlau tuaj yeem cuam tshuam nws qhov hardness thiab lub zog. Cov ntsiab lus silicon ntau dua ua rau cov hlau nrum nyuaj thiab nkig ntau dua, thaum cov ntsiab lus silicon tsim nyog pab txhim kho lub zog thiab hnav tsis kam ntawm cam khwb cia hlau. Rau high-silicon cam khwb cia hlau (xws li cam khwb cia hlau matrix nyob rau hauv cam khwb cia txhuas alloys), nws muaj ntau dua kub tsis kam thiab hnav tsis kam.

Txhim kho corrosion kuj:

Silicon muaj qee yam cuam tshuam rau kev tiv thaiv corrosion ntawm cam khwb cia hlau, tshwj xeeb tshaj yog rau qee qhov tshwj xeeb cam khwb cia hlau xws li cov cua sov-resistant cam khwb cia hlau. Kev nce hauv cov ntsiab lus ntawm silicon tuaj yeem txhim kho nws cov kev tiv thaiv kom kub oxidation thiab tshuaj corrosion.

Kev cuam tshuam rau lub koom haum thiab kev ua haujlwm ntawm cam khwb cia hlau:

Silicon muaj kev cuam tshuam zoo rau microstructure ntawm cam khwb cia hlau. Cam khwb cia hlau nrog cov ntsiab lus sib txawv silicon (xws li grey cam khwb cia hlau, malleable cam khwb cia hlau, thiab lwm yam) muaj qhov sib txawv tseem ceeb hauv lawv cov qauv tsim, uas txiav txim siab lawv qhov kev ua tau zoo kawg. Piv txwv li, cov ntsiab lus ntau dua silicon feem ntau ua rau muaj kev hloov pauv hauv morphology ntawm graphite, cuam tshuam rau cov khoom siv ntawm cov hlau cam khwb cia.