Cov tseem ceeb sib txawv ntawmferrosilicon 72thiabferrosilicon 75dag nyob rau hauv silicon cov ntsiab lus, impurity tswj, thiab kev ua tau zoo compatibility. Kev yuav khoom yuav tsum muaj kev sib raug zoo raws li cov txheej txheem steelmaking / casting thiab cov qauv kev tsim khoom kom sib npaug ntawm kev tsim khoom thiab kev ua kom zoo tshaj tus nqi.
Core Differences: Qhov txawv tseem ceeb hauv kev sib xyaw thiab kev ua tau zoo
Txheej Txheem Qhov Sib Txawv
Ferrosilicon 75% (FeSiAl1.5-A):Silicon cov ntsiab lus Ntau dua los yog sib npaug rau 75% (ntau 74% -80%), txhuas cov ntsiab lus Ntau dua los yog sib npaug rau 1.5%, nruj impurity txwv (Ca Less dua los yog sib npaug rau 0.06%, Mg Tsawg dua los yog sib npaug rau 0.05%, P Tsawg dua los yog sib npaug rau 0.04%), tag nrho txhuas thiab silicon ntsiab lus tsawg dua li paub tias tsawg dua 1 ".ferrosilicon".
Ferrosilicon 72% (FeSi75-B):Silicon cov ntsiab lus Ntau dua lossis sib npaug li 72% (ntau 72% -80%), cov ntsiab lus carbon tsawg dua lossis sib npaug li 0.08%, cov ntsiab lus hlau tsawg dua lossis sib npaug li 1.00%, tag nrho cov impurities Tsawg dua lossis sib npaug li 1.00%, nrog kev sib npaug ntawm cov impurities xws li manganese thiab tooj liab. Nws qhov ceev yog kwv yees li 4.2 g / cm³, thiab nws yog hu ua "mos ferrosilicon."
Qhov sib txawv ntawm lub cev thiab kev ua haujlwm zoo
Melting Point:FeSi 75% muaj cov ntsiab lus melting ntawm kwv yees li 1340 degree, siab dua FeSi 72%, pom muaj zog siab dua - kub stability.
Reactivity:Ferro silicon 75 muaj cov tshuaj tiv thaiv deoxidation sai dua, thaum ferro silicon 72 muaj fluidity zoo dua thiab kev ua haujlwm me me.
Txheej Txheem Txheej Txheem:Ferro silicon alloy 75 yog ib qho nyuaj dua, thaum ferro silicon alloy 72 muaj nruab nrab brittleness thiab yooj yim rau tawg thiab tawg.
Steelmaking Scenarios: Qauv Xaiv thiab Daim Ntawv Thov Logic
1. Tsim nyog Scenario rau Ferrosilicon 75 alloy
Core siv:
High-efficiency deoxidizer thiab alloying tus neeg sawv cev, tsim nyog rau kev tsim cov siab - lub zog steel, hluav taws xob hlau, thiab cov hlau alloy tshwj xeeb.
Qhov zoo:
Cov ntsiab lus silicon siab tso cai rau kev tshem tawm sai ntawm cov pa dawb los ntawm cov hlau molten, txo cov pa oxygen los ntawm 50 ppm mus rau kwv yees li 15 ppm, yog li txhim kho steel purity thiab txo cov kev tsis xws luag.
Cov ntawv thov raug:
Smelting ntawm transformer steel, caij nplooj ntoos hlav steel, thiab siab -lub zog steel qauv, ncua steel qaug zog lub neej los ntawm 15% -30% thiab txo hysteresis poob los ntawm 40%.
2. Tsim nyog siv rau Ferrosilicon 72 alloy
Core siv:
Deoxidation thiab alloying ntawm nruab nrab - carbon steel thiab qis - alloy structural steel, ntsuas tus nqi thiab kev ua haujlwm.
Qhov zoo:
Zoo impurity tshuav nyiaj li cas, zoo tswj cov ntsiab lus carbon hauv steel, txhim kho toughness thiab kev ua tau zoo, thiab zam cov teeb meem brittleness tshwm sim los ntawm ntau tshaj -alloying.
Cov ntawv thov raug:
Smelting ntawm bearing steel, tshav kub-cov hlau tsis muaj zog, thiab cov qauv zoo tib yam, nrog kev noj ntawm 1.5-4 kg ib ton ntawm cov hlau, muab kev ruaj khov deoxidation efficiency thiab cov nqi zoo dua.
Casting Scenarios: Model Selection and Application Logic
1. Cov xwm txheej tsim nyog rau 75% Ferrosilicon
Core siv:
Inoculant thiab spheroidizing tus neeg sawv cev rau ductile hlau thiab loj castings, txhawb spheroidal graphite nag lossis daus.
Qhov zoo:
Cov ntsiab lus siab silicon inhibits carbide tsim, ua kom lub zog tensile ntawm castings mus rau ntau tshaj 250MPa, thiab nce spheroidization tus nqi ntawm 80% mus rau 95%.
Cov ntawv thov raug:
Automotive qhov chaw, hnyav machinery castings, txo shrinkage defects, thiab nce yield los ntawm 3% -5%.
2. Cov xwm txheej tsim nyog rau 72% Ferrosilicon
Core siv:
Inoculation kho rau grey cam khwb cia hlau thiab qis -phosphorus, qis- sulfur castings, optimizing grain qauv.
Qhov zoo:
Zoo fluidity, uniform dispersion, txhawb hom A graphite tsim, txo cov hlau dawb nyiam, thiab txhim kho casting nto tiav rau Ra6.3.
Cov ntawv thov raug:
Nyias-walled castings, dav siv tshuab castings, txo qhov seem ntawm 8% mus rau kwv yees li 2%.
Daim Ntawv Qhia Txog Kev Txiav Txim Muag Khoom: 3 Cov kauj ruam kom ua tau raws li qhov xav tau
1. Txhais cov khoom kom zoo
Rau siab -lub zog, siab- khoom purity (xws li hluav taws xob hlau thiab precision castings), ua qhov tseem ceeb ntawm ferrosilicon 75 alloy, raws li nws cov yam ntxwv uas tsis muaj impurity ua kom cov khoom ua tau zoo.
Rau qhov dav - lub hom phiaj steels lossis castings (xws li cov qauv hlau zoo tib yam thiab niaj hnub castings), ferrosilicon 72 alloy muab tus nqi zoo dua -kev ua tau zoo, ua tau raws li qhov yuav tsum tau ua ntawm deoxidation thiab inoculation.
2. Match Process Parameters
Cov txheej txheem steelmaking: Xaiv ferrosilicon 75 rau ladle refining thiab siab -kub smelting; xaiv ferrosilicon 72 rau cov pa hluav taws xob arc rauv smelting thiab qis-rau- nruab nrab carbon steel ntau lawm.
Casting txheej txheem: Xaiv ferrosilicon 75 rau spheroidizing kev kho mob thiab loj castings; xaiv ferrosilicon 72 rau qhov zoo tib yam inoculation thiab nyias-walled castings kom tsis txhob muaj qhov tsis xws luag los ntawm cov dej tsis txaus.
3. Tus nqi sib npaug thiab ua haujlwm tau zoo
75 # Ferrosilicon muaj tus nqi siab dua 72 # ferrosilicon vim nws cov ntsiab lus silicon ntau dua thiab siv zog ntau dua (8000-8500 kWh ib tuj).
Thaum huab hwm coj- tsim dav dav- cov khoom lag luam, ferrosilicon 72 tuaj yeem txo cov nqi raw khoom; Txawm li cas los xij, siv ferrosilicon 72 hauv kev tsim cov khoom siv siab- kawg tuaj yeem ua rau cov nqi ua haujlwm tom qab vim qhov kev ua haujlwm tsis txaus, ua rau nws tsis muaj nqis.
Common Misconceptions Kom Zam Txim
Misconception 1:Cov ntsiab lus silicon ntau dua ib txwm zoo dua - Siv ferrosilicon 75 hauv cov khoom siv zoo tib yam tuaj yeem ua rau graphite ntab, cuam tshuam rau kev ua haujlwm.
Misconception 2:Tsis quav ntsej qhov cuam tshuam ntawm impurities - Yog tias cov ntsiab lus phosphorus ntawm ferrosilicon 72 siv hauv steelmaking tshaj tus qauv, nws yuav txo qhov corrosion ntawm cov hlau; Yog hais tias cov ntsiab lus txhuas ntawm ferrosilicon 75 siv hauv casting yog siab dhau lawm, nws yog feem ntau rau oxide inclusions.
Misconception 3:Tsis quav ntsej loj - Steelmaking yuav tsum tau 10-100mm blocky ferrosilicon, thaum casting yuav tsum tau0.2-8mm hmoov ferrosilicon; mismatched particle loj yuav txo cov tshuaj tiv thaiv efficiency.
Thaum muab 72# FeSi lossis 75# FeSi qib, lub hauv paus ntsiab lus tseem ceeb yog "kev ua tau zoo sib xws + tus nqi hloov pauv": ferrosilicon 75 yog qhov zoo dua rau siab-kawg steel thiab precision castings, thaum ferrosilicon 72 yog xaiv rau kev dav - cov khoom siv thiab cov txheej txheem ua haujlwm. Nws raug nquahu kom thov thib peb-cov ntaub ntawv kuaj xyuas tog neeg los ntawm cov chaw muag khoom, qhia meej meej cov ntsiab lus silicon, qib impurity, thiab particle loj specifications kom ntseeg tau tias cov khoom ua tau raws li qhov yuav tsum tau ua.
