Hauv kev lag luam aluminium alloy ntau lawm, silicon hlau, raws li qhov tseem ceeb alloying additive, ncaj qha txiav txim siab cov khoom siv hluav taws xob, casting tawm los, thiab cov nqi tsim khoom ntawm cov khoom kawg los ntawm kev xaiv qib. Rau kev yuav cov neeg ua haujlwm thiab casting engineers, xaiv ntawmSilicon hlau 441thiab553feem ntau yog thawj kauj ruam hauv kev ua kom zoo ntawm cov saw hlau thiab cov txheej txheem, thiab kuj yog ib qho kev sib tw loj.
Ntau tus neeg yuav khoom ib txwm ntseeg tias "qhov siab dua cov ntsiab lus ntawm silicon, qhov zoo dua," tab sis kev lag luam tiag tiag qhia peb tias kev nrhiav "qhov zoo tshaj plaws" nyob rau hauv aluminium alloy ntau lawm tsis yog hais txog kev nrhiav cov ntsiab lus siab silicon, tab sis hais txog kev lag luam - tawm ntawm kev tswj cov impurities xws li hlau (Fe), aluminium (Al), thiab calcium (Ca) thiab nqi.
Qib Decoding
1.1 Silicon Metal 441: "Cov Tub Ntxhais Kawm Sab saum toj" ntawm Kev Ua Siab Zoo
Cov tshuaj muaj pes tsawg leeg sawv cev los ntawm qib 441 yog:Hlau (Fe) Tsawg dua lossis sib npaug li 0.4%, Aluminium (Al) Tsawg dua lossis sib npaug li 0.4%, Calcium (Ca) Tsawg dua lossis sib npaug li 0.1%, thiab cov ntsiab lus silicon feem ntau yog siab dua 99.0%.
Core Advantage:Kev tswj hwm nruj heev ntawm cov ntsiab lus calcium (tsawg dua lossis sib npaug li 0.1%), qhov taw qhia tseem ceeb qhia qhov txawv ntawm qis dua - qib kawg.
1.2 Silicon Metal 553: Kev Lag Luam thiab Kev Siv Txhua Yam -Rounder
Qhov sib xyaw ua ke ntawm qib 553 yog:Hlau (Fe) Tsawg dua lossis sib npaug li 0.5%, Aluminium (Al) Tsawg dua lossis sib npaug li 0.5%, Calcium (Ca) Tsawg dua lossis sib npaug li 0.3%, thiab cov ntsiab lus silicon nyob ib puag ncig 98.5%.
Cov yam ntxwv tseem ceeb:Kev ua siab ntev ntev rau impurities, tshwj xeeb tshaj yog cov ntsiab lus calcium, uas yog peb npaug ntawm 441. Qhov no tso cai rau kev hloov pauv ntau dua hauv cov khoom siv raw thiab cov txheej txheem smelting, ua rau muaj txiaj ntsig zoo.
|
Qib |
Silicon (Si) |
Hlau (Fe) |
Aluminium (Al) |
Calcium (Ca) |
Hom Daim Ntawv Thov Orientation |
|
Silicon hlau 441 |
Ntau dua lossis sib npaug li 99.0% |
Tsawg dua lossis sib npaug li 0.4% |
Tsawg dua lossis sib npaug li 0.4% |
Tsawg dua lossis sib npaug li 0.1% |
High-kawg alloys, tshuaj lom neeg / hnub ci siv |
|
Silicon hlau 553 |
Ntau dua lossis sib npaug li 98.5% |
Tsawg dua los yog sib npaug li 0.5% |
Tsawg dua los yog sib npaug li 0.5% |
Tsawg dua lossis sib npaug li 0.3% |
General aluminium alloys, metallurgy |
Vim li cas Impurity Control tseem ceeb dua li cov ntsiab lus Silicon?
Nyob rau hauv cov txheej txheem smelting ntawm txhuas-silicon alloys (xws li ADC12, A356), silicon nkag mus rau molten aluminium raws li ib tug additive. Lub sijhawm no, qhov sib txawv ntawm Silicon 441 thiab Silicon 553 ncaj qha cuam tshuam rau cov yaj zoo thiab qhov kawg ntawm kev ua haujlwm casting.
2.1 Qhov cuam tshuam ntawm Hlau (Fe) thiab Aluminium (Al): Kev Lag Luam - tawm ntawm Lub Zog thiab Toughness
Kev sib tw ntawm 553:
553 muaj cov hlau hnyav heev (tsawg dua lossis sib npaug li 0.5%). Nyob rau hauv aluminium alloys, hlau ua acicular hlau- cov theem nplua nuj (xws li -Al5FeSi), uas yog tawv thiab nkig thiab tuaj yeem ua rau cov matrix tawg, txo elongation thiab cuam tshuam tsis kam. Rau kev tsim cov khoom nyias nyias -cov phab ntsa lossis cov khoom siv uas yuav tsum tau ua kom muaj zog (xws li cov khoom siv kev nyab xeeb hauv tsheb), siv 553 tuaj yeem ua rau muaj kev pheej hmoo ntawm kev tawg.
Qhov zoo ntawm 441:
Cov ntsiab lus hlau qis ntawm Si441 (Tsawg dua lossis sib npaug li 0.4%) muab cov npoo kev nyab xeeb loj dua hauv smelting. Txawm hais tias muaj kev qhia txog qee qhov impurities thaum lub sijhawm sib ntxiv, cov ntsiab lus hlau ntawm qhov kawg alloy tseem tuaj yeem tswj tau nyob rau hauv cov qauv nruj rau siab - zoo aluminium alloys.
2.2 Tus neeg tua neeg zais ntawm Calcium (Ca): Qhov Zoo thiab Kev Kho Mob Melt
Calcium yog lub ntsiab lus uas ua rau qhov sib txawv loj tshaj plaws ntawm 441 thiab 553 aluminium alloys, thiab nws kuj yog ib qho yooj yim overlooked variable nyob rau hauv aluminium alloy ntau lawm.
Qhov Teeb Meem Zoo:
Cov ntsiab lus calcium siab (xws li 0.3% hauv Si553) yooj yim tsim cov slag thiab oxide nyob rau saum npoo ntawm molten aluminium thaum lub sij hawm smelting txheej txheem, ua rau tsis zoo deg tiav ntawm castings thiab nce tus nqi ntawm tom ntej machining thiab kho nto.
Kev cuam tshuam nrog Grain Refinement:
Aluminium-silicon alloys feem ntau xav tau qhov sib ntxiv ntawm strontium (Sr) lossis sodium (Na) rau kev kho kho kho kom zoo dua eutectic silicon. Calcium "tshuaj lom" kev hloov kho cov nyhuv ntawm strontium, noj cov hloov kho, thiab ua rau kev hloov kho tsis tiav, yog li txo cov khoom siv ntawm cov hlau. Thaum siv 553, nws yog ib qho tsim nyog yuav tsum tau nce tus nqi ntawm kev hloov kho kom txo tau cov txiaj ntsig ntawm calcium.
Qhov "Balance" zoo dua rau koj?
Kev xaiv ntawm 441 thiab 553 yog qhov tseem ceeb ntawm kev lag luam -tawm ntawm cov nqi tswj xyuas zoo thiab cov nqi khoom siv raw.
3.1 Tus nqi Logic ntawm 553: Haum rau "kwv yees" lossis loj - nplai dav dav
Siv tau Scenarios:Kev tsim khoom ntawm aluminium profiles rau kev tsim kho, cov khoom siv kho tshuab dav dav, thiab lwm yam khoom nrog siab kam rau siab rau impurities.
Qhov zoo:Tus nqi yuav khoom feem ntau yog 5%-10% qis dua 441. Yog tias lub Hoobkas muaj peev xwm ua kom huv si muaj zog (piv txwv li, nruab nrog siab -cov cuab yeej ua haujlwm degassing), tus nqi siab impurity tuaj yeem them rov qab los ntawm kev ua haujlwm tom qab.
Kev pheej hmoo:Qhov rai txheej txheem nqaim; Kev tswj tsis raug ntawm melting kub los yog lub sij hawm tuaj yeem yooj yim ua rau cov khoom seem ntau dua.
3.2 Tus nqi-Ntxiv Logic ntawm 441: Haum rau "precision" thiab siab -tus nqi- ntxiv ntau lawm
Siv tau Scenarios:Cov khoom siv hauv tsheb sib sib zog nqus (xws li, qhov chaw nres tsheb, lub cav thaiv), cov khoom siv hluav taws xob siv hluav taws xob, thiab siab -sov- cov ntaub ntawv zoo txhuas uas yuav tsum tau muaj anodizing.
Qhov zoo:
Kev ruaj ntseg:Cov ntsiab lus calcium tsawg heev ua kom muaj kev ruaj ntseg ntawm cov txheej txheem hloov kho, txo "batch-rau-batch variability."
Flowability:High purity txhais tau hais tias zoo dua aluminium melt flowability, haum rau sau complex nyias-walled pwm.
Tus nqi tag nrho:Txawm hais tias tus nqi yuav khoom siab dua, tag nrho cov nqi tsim khoom yuav qis dua li ntawm 553 vim nws qhov kub hnyiab qis dua -tawm tus nqi, slag tsawg, thiab ntau dua.
Rau aluminium alloy ntau lawm, Silicon Hlau 441 sawv cev rau kev tsom mus rau "kev ruaj ntseg zoo," kev lag luam tus nqi siab dua me ntsis rau lub qhov rais txheej txheem dav thiab cov khoom lag luam zoo dua; thaum Silicon Hlau 553 sawv cev rau qhov kawg "tus nqi tseem ceeb," haum rau cov qauv, qis- cuam tshuam, siab- cov khoom ntim.
Koj qhov kev xaiv nyob ntawm koj cov neeg siv khoom:
Yog tias koj tsim cov khoom siab -tus nqi- ntxiv, xa tawm- taw qhia, lossis qhov tseem ceeb ntawm kev nyab xeeb ntawm tsheb, qhov "sib npaug" ntawm 441 leans ntau dua rau kev tswj hwm kev pheej hmoo.
Yog tias koj tsim cov khoom siv hauv tsev lossis cov khoom siv sab hauv, qhov "sib npaug" ntawm 553 leans ntau dua rau cov txiaj ntsig zoo tshaj plaws.
