Ferro silicon magnesium(feem ntau abbreviated li FeSiMg) yog ib qho tseem ceeb ua haujlwm ferroalloy nyob rau hauv kev tsim sector, txawv los ntawm nws cov cim ua ke ntawm silicon lub reducibility thiab magnesium's graphitization- txhawb zog. Thaum nws qhia ib lub hauv paus zoo sib xws nrog cov qauvferrosilicon, ntxiv ntawm magnesium endows nws muaj peev xwm tshwj xeeb uas ua rau nws irreplaceable nyob rau hauv tshwj xeeb high - daim ntawv thov nqi.
Ib qho tseem ceeb tshaj plaws ntawm kev siv ferro magnesium silicon yog ua tus neeg sawv cev nodulizing hauv kev tsim cov hlau hlau- lub luag haujlwm uas suav txog ntau dua 90% ntawm kev noj FeSiMg thoob ntiaj teb. Ductile hlau (tseem hu ua nodular cam khwb cia hlau los yog spheroidal graphite hlau) yog ib tug siab - cov khoom ua tau zoo uas nws superior zog stem ncaj qha los ntawm spherical duab ntawm nws graphite hais, ib tug transformation enabled los ntawm FeSiMg.
Core Application: Nodulizing Agent nyob rau hauv Ductile Iron Production
1.1 Technical Mechanism: Tig Flake Graphite rau Spherical Graphite
Nyob rau hauv cov tsoos grey cam khwb cia hlau, graphite cov ntaub ntawv nyob rau hauv flake-zoo li cov qauv uas ua raws li nyob rau hauv "stress concentrators," ua rau cov khoom nkig thiab nquag tawg nyob rau hauv load. Thaum ferro silicon magnesium ntxiv rau molten cam khwb cia hlau (feem ntau ntawm 1.0% -1.5% ntawm molten hlau hnyav), ob qhov tseem ceeb tshwm sim:
- Graphite Nodulization:
Magnesium atoms nyob rau hauv FeSiMg adsorb mus rau saum npoo ntawm nascent graphite crystals thaum lub sij hawm solidification, suppressing kev loj hlob raws li tej siv lead ua dav hlau. Qhov no yuam graphite kom loj hlob zoo ib yam hauv cov duab kheej kheej es tsis yog flakes.
- Kev them nyiaj yug Deoxidization:
Silicon hauv FeSiMg txhim kho cov alloy qhov txo qis, tshem tawm cov pa oxygen los ntawm cov hlau molten uas yuav txwv tsis pub cuam tshuam nrog graphite spheroidization thiab ua rau casting tsis xws li porosity.
Qhov tshwm sim yog ductile hlau nrog 3-5 zaug siab dua toughness thiab 2-3 zaug siab tensile zog tshaj grey cam khwb cia hlau, bridging qhov kev ua tau zoo sib txawv ntawm cam khwb cia hlau thiab forged hlau.
1.2 Cov Kev Siv Hlau Hlau Tseem Ceeb tau qhib los ntawm FeSiMg
Ferro silicon magnesium cov nyhuv nodulizing ua rau cov hlau ductile haum rau siab - kev ntxhov siab, siab - cov khoom muaj kev ntseeg siab thoob plaws ntau qhov kev lag luam. Hauv qab no yog cov kev siv tseem ceeb tshaj plaws:
|
Kev lag luam |
Tej Cheebtsam |
Vim li cas Cov Hlau Hlau (FeSiMg-Enabled) yog qhov nyiam |
|---|---|---|
|
Automotive & Tsheb thauj mus los |
Crankshafts, txuas rods, gearboxes, qag tsev nyob, nres discs |
Siab qaug zog; 20% -30% sib dua li forged steel; qis raug nqi ntawm casting |
|
Pipeline & Cov kav dej |
Loj - txoj kab uas hla dej / roj kav, cov yeeb nkab fittings, li qub |
Zoo heev corrosion kuj (surpasses steel); siab cuam tshuam rau kev faus hauv av; kev pab cuam lub neej tshaj 50 xyoo |
|
Engineering Machinery |
Excavator thoob hniav, loader caj npab, tsheb nrau av lem, hydraulic lub tog raj kheej blocks |
Superior hnav tsis kam; muaj peev xwm tiv taus hnyav hnyav thiab cuam tshuam kev poob siab; tus nqi- zoo rau cov khoom loj |
|
Lub zog tauj dua tshiab |
Cua turbine hub castings, hnub ci vaj huam sib luag txhawb nqa qauv |
Siab zog-rau- hnyav piv; tsis kam mus rau hnyav ib puag ncig (xws li cua, av noo) |
|
Agricultural Machinery |
Tsheb laij teb cav blocks, plowshares, harvester Cheebtsam |
Durability tiv thaiv av abrasion; corrosion tsis kam rau chiv / tshuaj tua kab; kev txij nkawm qis |
Secondary Applications: Tshwj xeeb lub luag hauj lwm nyob rau hauv metallurgy
Tshaj li cov hlau nplaum ntau lawm, magnesium ferro silicon ua haujlwm niche tab sis lub luag haujlwm tseem ceeb hauv lwm cov txheej txheem metallurgical, leveraging nws ua ke silicon thiab magnesium zog:
2.1 Inoculant rau siab -Kev Ua Haujlwm Hlau
Hauv qee qhov tshwj xeeb casting scenarios (piv txwv li, nyias- cov khoom siv phab ntsa ductile hlau), FeSiMg yog siv los ua ib qho ntxiv inoculant nrog rau cov tshuaj ferrosilicon. Nws cov ntsiab lus magnesium pab ua kom cov graphite nodule loj thiab kev faib tawm, thaum silicon txhawb nqa cov nplej ua kom zoo dua qub -txo cov kev ua tsis xws luag xws li shrinkage thiab txhim kho qhov raug.
2.2 Desulfurization Aid hauv Steelmaking (Siv txwv)
Txawm hais tias tsis yog thawj tus neeg sawv cev desulfurizing (calcium-raws li alloys yog ntau dua), ferro silicon magnesium tuaj yeem pab ua kom me me desulfurization ntawm qis- carbon steel. Magnesium reacts nrog sulfur nyob rau hauv molten hlau los tsim magnesium sulfide (MgS), uas ntab mus rau saum npoo li slag. Qhov kev siv no raug txwv vim yog magnesium tus nqi siab thiab muaj peev xwm rau steel brittleness yog tias siv ntau dhau, tab sis nws muaj txiaj ntsig zoo hauv cov khoom me me -batch, siab -purity steel ntau lawm.
2.3 Alloying Agent rau Tshwj xeeb Magnesium Alloys
Hauv kev tsim cov magnesium-raws li alloys rau aerospace thiab automotive lightweighting, FeSiMg ua raws li tus nqi - siv tau zoo alloying agent. Nws qhia txog kev tswj hwm ntawm silicon thiab hlau rau magnesium, txhim kho nws lub zog thiab kub ua haujlwm yam tsis muaj kev cuam tshuam nws qhov tsawg - qhov kom zoo dua ntom ntom. Daim ntawv thov no yog niche tab sis loj hlob raws li kev lag luam ua ntej cov khoom siv hnyav.
Yam tseem ceeb cuam tshuam rau FeSiMg Kev Siv Tau Zoo
Txhawm rau kom muaj txiaj ntsig zoo ntawm ferro silicon magnesium hauv nws daim ntawv thov, cov kws kho mob yuav tsum xav txog peb yam tseem ceeb:
3.1 Mg Cov Ntsiab Lus Xaiv Qib
FeSiMg yog ntsuas los ntawm nws cov ntsiab lus magnesium (xws li FeSiMg8, FeSiMg10, FeSiMg11). Cov ntsiab lus Mg siab dua (10%-11%) yog qhov zoo tagnrho rau cov castings loj lossis siab -sulfur molten hlau, vim nws ua kom cov nodulization txaus. Cov ntsiab lus qis dua Mg (4% -8%) yog tsim rau cov khoom me me lossis cov hlau tsis muaj sulfur, txo tus nqi thiab txo qis magnesium brittleness.
3.2 Ntxiv Txoj Kev & Kev Tswj Kub Kub
Magnesium qhov kub siab qis (1090 degree) txhais tau tias nws yog nquag mus rau volatilization. Cov kev sib txuas ntxiv muaj xws li "冲入法" (冲入法, nchuav FeSiMg rau hauv cov hlau molten) thiab ladle inoculation, ob qho tib si yuav tsum tau tswj qhov kub thiab txias (1400-1500 degree) kom txo Mg poob thiab xyuas kom muaj kev sib faib.
3.3 Kev Cia Siab
Magnesium's siab reactivity ua rau FeSiMg susceptible rau noo noo nqus thiab oxidation. Nws yuav tsum tau muab khaws cia rau hauv cov ntim ntim, qhuav kom tsis txhob tsim cov magnesium hydroxide (Mg (OH) ₂), uas ua rau nws cov nyhuv nodulizing. Kev khaws cia tsis raug yog qhov ua rau muaj qhov tsis xws luag hauv kev tsim cov hlau ductile.
Ferro silicon magnesium tus nqi tseem ceeb yog nyob rau hauv nws lub peev xwm los hloov cov cam khwb cia zoo tib yam rau hauv siab -kev ua tau zoo ntawm cov hlau, uas ua rau kev tsim cov nqi- siv tau, cov khoom siv ruaj khov thoob plaws hauv tsheb, kev tsim kho, lub zog, thiab kev ua liaj ua teb. Nws lub luag haujlwm thib ob hauv inoculation thiab alloying ntxiv dag zog rau nws cov xwm txheej raws li ntau yam ferroalloy.
