Hauv kev lag luam aluminium alloy casting, silicon hlau yog ib qho tseem ceeb alloying additive, tab sis kev txiav txim siab yuav khoom feem ntau ntsib teeb meem: yuav tsum xaiv tus pheej yig dua.Silicon hlau 553los yog ruaj khov duaSilicon hlau 441? Rau cov chaw tsim khoom, qhov sib txawv ntawm Silicon553 thiab Silicon441 ncaj qha cuam tshuam rau kev ua haujlwm melting, casting tawm los, thiab cov khoom siv kho tshuab ntawm cov khoom kawg. Kev xaiv tsis raug tuaj yeem ua rau raug nqi rov ua dua lossis cov khoom seem, thaum nrhiav kev purity ntau dhau ua rau cov nyiaj tsis tsim nyog.
Re- nkag siab Si553 thiab Si441
Ua ntej delving rau hauv qhov kev txiav txim siab- ua qauv, peb yuav tsum xub qhia meej txog cov tshuaj lom neeg sib txawv ntawm ob qib thiab lawv qhov cuam tshuam ncaj qha rau cov txheej txheem casting.
Hauv -Kev txhais lus tob ntawm Chemical Composition
| Specifications |
Silicon hlau 553 |
Silicon hlau 441 |
Tseem ceeb cuam tshuam rau txheej txheem Casting |
| Silicon (Si) Cov ntsiab lus |
Ntau dua lossis sib npaug li 98.5% |
Ntau dua lossis sib npaug li 99.0% |
Muaj feem xyuam rau alloy lub zog thiab casting fluidity |
| Hlau (Fe) |
Tsawg dua los yog sib npaug li 0.5% |
Tsawg dua lossis sib npaug li 0.4% |
Cov ntsiab lus hlau ntau dhau ua rau tsim cov theem ntawm cov hlau acicular, txo cov elongation thiab ua rau nkig castings. |
| Aluminium (Al) |
Tsawg dua los yog sib npaug li 0.5% |
Tsawg dua lossis sib npaug li 0.4% |
Muaj feem xyuam rau kev tswj hwm ntawm qhov kawg alloy muaj pes tsawg leeg |
| Calcium (Ca) |
Tsawg dua lossis sib npaug li 0.3% |
Tsawg dua lossis sib npaug li 0.1% |
Calcium yog ib qho tseem ceeb rau kev ua qias tuaj thiab porosity, cuam tshuam rau kev huv huv thiab kev ua haujlwm ntawm kev hloov kho. |
Kev Paub Txog Kev Lag Luam:Cov ntsiab lus calcium ntawm 553 yog peb npaug ntawm 441. Nyob rau hauv siab -kawg casting, calcium siab tuaj yeem "tshuaj lom" lub strontium (Sr) modifier, xav tau ib qho ntxiv ntawm kev hloov kho kom them rov qab, uas feem ntau yog tus nqi zais.
Foundry Decision Matrix
Daim ntawv thov khoom kawg
Lus Nug: Yam khoom ntawm aluminium alloy khoom koj casting?
| Daim ntawv thov Scenario | Pom zoo hom | Kev txiav txim siab |
| Siab - lub zog thiab cov khoom siv tawv tawv |
441 |
Cov kev xav tau siab rau elongation thiab qaug zog lub neej yuav tsum tau tswj nruj ntawm Fe impurities. Case Study: Lub zog tshiab lub tsheb chassis siv 441 qhia txog 50% kev txhim kho hauv kev sib tsoo kev nyab xeeb. |
| Precision hydraulic Cheebtsam |
441 |
Yuav tsum muaj qhov ntom ntom microstructure; calcium uas tsis tshua muaj heev txo cov pinholes thiab tiv thaiv siab -siab to. |
| Consumer electronics tsev |
441 |
Kev xav tau siab heev rau anodized nto zoo yog xav tau; Cov hlau tsis tshua muaj thiab cov calcium uas tsis tshua muaj tiv thaiv "kab dub" lossis xim txawv. |
| General mechanical qhov chaw |
553 |
Kev xav tau kev ua haujlwm nruab nrab nrog tus nqi siab rhiab heev. |
| Architectural kho kom zoo nkauj profiles |
553 |
Loj -scale extrusion ntau lawm tso cai rau siab dua rau impurities. |
| Secondary aluminium ingot blending |
553 |
Lub cub tawg nqi nws tus kheej muaj complex impurities; siv 553 yog tus nqi ntau dua - zoo. |
Smelting txheej txheem thiab kev tswj kom muaj peev xwm
Lus Nug: Dab tsi yog theem ntawm kev tswj hwm hauv koj qhov chaw tsim khoom?
| Txheej txheem tsis | Kev Sib Tw Ntawm Kev Xaiv 553 | Qhov zoo ntawm kev xaiv 441 |
| Melt kev kho mob | Yog hais tias cov khoom siv refining thiab degassing yog outdated, cov ntsiab lus calcium siab ntawm 553 tuaj yeem ua rau cov roj av nqus tau, ua rau muaj qhov porosity. | Cov ntsiab lus calcium uas tsis tshua muaj txhais tau hais tias ua kom huv si, txo qhov kev cia siab ntawm cov txheej txheem refining, thiab zoo dua melting stability. |
| Kev kho deterioration | Cov ntsiab lus calcium siab ntawm 553 siv ntau ntawm strontium / sodium modifiers, ua rau muaj kev hloov pauv tsis ruaj khov thiab ntxhib eutectic silicon. | Cov ntsiab lus calcium uas tsis tshua muaj ntawm 441 ua kom muaj kev hloov kho tau zoo, muaj txiaj ntsig zoo ib yam, thiab kev hloov pauv tsawg kawg hauv cov khoom siv kho tshuab. |
| Kev tswj qhov kub thiab txias | Lub qhov rais txheej txheem yog nqaim, thiab kev tswj qhov kub tsis zoo tuaj yeem tsim kom muaj ntau cov oxide slag. | Nws muaj cov txheej txheem dav dav, ua siab ntev rau qhov kub thiab txias, thiab tsim nyog rau kev ua haujlwm tas mus li. |
Kev Ntsuas Tus Nqi
Ib qho kev ua yuam kev feem ntau ua rau tsuas yog sib piv cov nqi tsev ib tuj ntawm 553 thiab 441, thaum tsis quav ntsej tag nrho cov nqi siv.
| Cov khoom raug nqi |
553 |
441 |
Kev txiav txim siab hnyav |
| Tus nqi yuav khoom | qis | Zoo dua | Tej yam yooj yim |
| Poob ntawm Hlawv - tawm thiab Scum | calcium ua rau ntau oxide slag thiab txo cov hlau rov qab. | Ntxuav smelting, tsawg slag, siab yield | Cov khoom tseem ceeb |
| Degrading Agent Consumption | Ib qho ntxiv 20-30% ntawm kev hloov kho yog xav tau los ua kom tsis muaj zog ntawm calcium. | Stable modifier ntau npaum | Cov khoom zais |
| Qhwv tus nqi | Kev hloov pauv hauv impurities tuaj yeem ua rau tus nqi seem. | Stable impurities ua rau ib tug ruaj khov yield | Cov khoom txiav txim siab |
Rau cov chaw tsim khoom, xaiv ntawm 553 thiab 441 tsis yog ib qho yooj yim yog yog - lossis - tsis muaj lus nug, tab sis kev txheeb xyuas dav dav. Tsis muaj qhov "zoo tshaj plaws," tsuas yog "zoo tshaj" ib qho raws li koj cov khoom tshwj xeeb, txheej txheem, thiab cov qauv nqi.
