Coob leej neeg tsis paub nrogSilicon CarbideCov. Txawm hais tias nws qhia ntau yam sib xws nrogFERRO Siliconnyob rau hauv nws siv, ob leeg muaj silicon, uas, los ntawm silicon cov kev tawm tsam, ua yuam kev tseem ceeb muaj nuj nqi xws lideoxidationthiab alloying. Txawm li cas los xij, Fesi alloy feem ntau siv cov qis dua, xws li65%, 72%, thiab75%, Thaum Silicon Carbide muaj ntau cov ntau ntawm cov ntau, xws li 60% mus rau 90%, thiab txawm nce txog 99%. Hauv peb txoj haujlwm txhua hnub, peb tau txais lus nug rau carbide silicon nrog cov ntau ntawm 64%,70%, 88%, thiab90%Cov. Txhawm rau hais txog qhov kev tsis meej pem no, Kuv yuav qhia ntau yam thiab ntau thiab ntau ntawm cov zaub mov uas silicon rau cov khoom dai deoxidation.
Nyob rau hauv lub foundry kev lag luam, silicon carbide (sic) tau siv dav ua deoxidizer. Nws cov tub ntxhais muaj nuj nqi yog kom rov qab ua si silicon (Si) hauv cov thawv roj oxygen (O) hauv cov pa roj oxygen (O) Cov ntsiab lus thiab qhov loj ntawm silicon carbide deoxidizers yog ze ze rau cov khoom siv casting (piv txwv li cov hlau cam khwb cia) thiab cov txheej txheem smelting.
Hom Silicon Carbide Deagidizer Cov Ntsiab Lus Cov Ntsiab Lus Ntau Yam thiab Kev Xaiv Cov Qauv
Silicon carbide deoxidizer cov ntsiab lus (hais txog SIC Purity) yog feem ntau ntawm 60% thiab 80%. Qhov kev xaiv tshwj xeeb yuav tsum ua raws li cov khoom siv casting uas yuav tsum tau thiab raug tswj hwm:
{{01. 60% -}} 70% Nruab Nrab Nrov Silicon Carbide Cov Ntsiab Lus
Cov Kev Siv Siv Tau:Smelting thiab deoxidation ntawm dog dig grey cam khwb cia hlau thiab coorile hlau.
Kev sib xyaw cov yam ntxwv:Ntxiv rau SIC, nws muaj qee qhov nyiaj ntawm kev dawb silicon (si), cov pa roj carbon dawb (thiab cov roj ntsha me me (xws li fer₂o₃ thiab al₂o₃). Silicon ncaj qha koom nrog cov tshuaj tiv thaiv Dazidation (Si + O₂ → Sio₂), thaum cov hlau dawb ua rau cov pa roj carbon, txo qhov nyiam ntawm cov hlau dawb cam khwb cia.
Qhov Zoo:Tus nqi qis, deoxidation efficiency txaus kom tau raws li cov kev xav tau ntawm cov ntsiab lus cam khwb cia ntau dua li cov neeg siv cov pa tawm ntawm cov khoom siv hlau cam khwb cia.
{{02. 70% -}} 80% nruab nrab-siab silicon carbide
Cov Ntawv Thov:Melting deoxidation ntawm high -} lub zog cam khwb cia hlau (xws li vermicular graphite hlau) thiab qis {{}} allloy steel.
Kev Sau Npe:Tsawg dawb silicon thiab impurity cov ntsiab lus, nrog ua kom tiav cov qauv siv lead ua ntau dua. Deagidation feem ntau nyob ntawm cov silicon hauv sic (thaum Si hauv Sic iniygen nrog oxygen, carbon tau tso tawm: sic} o → siio₂ + c). Cov khoom lag luam generated hloov cov noob txhuv loj thiab txhim kho cov khoom siv ua kom muaj zog.
Qhov Zoo:Cov tshuaj tiv thaiv dazidation yog qhov ruaj khov, ua rau muaj qhov me dua thiab muaj cov pob zeb uas tau muab faib ua kom yooj yim uas yooj yim ntab thiab tshem tawm. Qhov no kuj yuav txo cov teeb meem ntawm kev txo cov nrib pleb tawv
Cov kev qhia loj me me thiab lawv cov kev cuam tshuam rau Deagidation Performance
Qhov loj ntawm silicon carbide deoxidizers ncaj qha cuam tshuam rau lawv cov lus sib cais hauv cov yaj thiab lawv deoxidation ua tau zoo. Cov ntu uas muaj ntau qhov ntau thiab tsawg los ntawm 0.5 txog 5 hli thiab tau categorized rau hauv cov hom hauv qab no:
| Qhov loj me specifications | Cov Kev Siv Raug Raug | Deagidation nyhuv thiab cov yam ntxwv |
| 0.5-1mm (zoo) | Me me nruab nrab inducta, nyias -} phab ntsa casting melting | Qhov chaw loj thaj chaw, muaj kev sib cuag txaus nrog cov yaj, thiab cov tshuaj tiv thaiv sai sai, ua rau nws yuav tsum tau kho cov ntsiab lus oxygen; Txawm li cas los xij, nws yog yooj yim entrained nyob rau hauv cov yaj, tsim cov nplua zoo suav nrog (xav kom muaj kev cuam tshuam zoo ntxiv los txhawb ntab). |
| 1-3mm (nruab nrab) | Puab nrum hlau yaj hauv nruab nrab induction rauv / hluav taws xob arc rauv | Qeb tsis sib xws, du tshuaj tiv thaiv, kev ua kom muaj kev tsim, thiab ntab yooj yim, ua rau nws siv loj tshaj plaws. |
| 3-5mm (coarse) | Lub tshuab hluav taws xob loj loj ntawm lub tshuab hluav taws xob loj, tuab -} phab ntsa casting melting | Qeeb qeeb kawg, kev tawm tsam ntev ntev, tsis txhob "{{{} {neeg deoxidation (haum rau cov txheej txheem nrog cov txheej txheem ntev melting); Txawm li cas los xij, yog qhov tsim kom txaus yog qhov yuav tsum tau los tiv thaiv kom tsis txhob muaj kev tawm ntawm qhov cub hauv qab. |
Cov hauv paus ntsiab lus ntawm qhov loj xaiv:
Thaum melting kub yog siab (piv txwv, cam khwb cia steel, 1500-1600 degree), txo cov coarser me me tuaj yeem siv tau (kom txo qis kev kub hnyiab thaum kub siab);
Thaum melting kub yog tsawg (piv txwv, cam khwb cia hlau, 1300-1400 degree), zoo lossis nruab nrab yog nyiam (kom paub tseeb tias kev ua tiav tiav).
Thin {- walled walled castings yog qhov nkag siab suav nrog thiab xav tau txoj hmoov zoo nrog kev siv zog. tuab {- walled wallings tuaj yeem tiv taus mearser me ntsis coarser hais, ua ntej deoxidation tas li.
Kev sib piv ntawm deoxidation teebmeem nyob rau hauv cov tsis sib txawv
1. Cov nyhuv ntawm cov ntsiab lus ntawm Deagidation nyhuv
Cov ntsiab lus tsawg (60% -70%):
Deagidation yog sai dua (silicon reacts ncaj qha), tab sis ntau cov impurities nyob rau hauv tom qab cov tshuaj tiv thaiv tuaj yeem tshem tawm, thiab cov pores me me tuaj yeem tsim nyob rau hauv lub casting. Qhov no haum rau castings nrog cov kev yuav tsum qis dua qhov yuav tsum tau (piv txwv li, kev ua liaj ua teb machinery qhov chaw thiab dav dav tshuab Tuam Txaj).
Cov ntsiab lus siab (70% -80%):
Cov tshuaj tiv thaiv deoxidation ntau dua, ua rau muaj kev npau taws (tsawg} Txawm li cas los xij, deoxidation tus nqi yog me ntsis qeeb (cia siab rau ntawm SIC kev rhuav tshem), xav tau lub sijhawm ntev ntev. Qhov no ua rau nws haum rau high- lub zog castings xws li siab {4} kev kub li qub thiab cov cav.
2. Cov nyhuv ntawm qhov loj me rau deoxidation ua hauj lwm zoo
Ntau dhau qhov ua kom zoo (<0.5mm):
Lawv tau yooj yim entrained los ntawm lub airflow nyob rau hauv cov yaj, sib sau ua "pa taws." Qee cov lus raug ntiab tawm yam tsis tau koom nrog cov tshuaj tiv thaiv, uas ua rau txo qis kev deoxidation. Residual ultrafine suav kuj yuav txo qis cam khwb cia.
Excessively coarse particles (>5 hli):
Lawv tsis tau ua tiav hauv cov txiv hmab thiab feem ntau nyob ntawm cov cua sov hauv qab, ua cov khoom siv tuag "uas muaj pov tseg. Tsis tas li ntawd, tsis muaj kev deoxidation hauv zos yuav ua rau muaj kev sib tw hauv zos lossis cov quav me me hauv cov casting.
Cov ntsiab lus tseem ceeb ntawm sic alloy deoxidizers (60% -80% cov ntsiab lus, cov yam ntxwv ntawm cov txheej txheem smelting, thiab tus nqi tshuav nyiaj li cas:
Txog cov hlau cam khwb cia, 60% -70% cov ntsiab lus thiab ib qho 1-3mm loj yog nyiam rau tus nqi qis thiab deoxidation sai sai.
Txog siab -} lub zog nrum hlau lossis qis}}}}}}}}}}}}} ecloks tau xaiv kom ntseeg tau tias muaj kev ua kom ruaj khov.
Kev ua kom haum rau cov tsis tsim nyog no tuaj yeem txo cov kab ke sib nraus thiab txhim kho kev ruaj khov ntau lawm.
