Lub 3000 series aluminium coil alloy yog aluminium alloy nrog manganese ua lub ntsiab alloying, thiab nws yog aluminium alloy uas tsis tuaj yeem ntxiv dag zog los ntawm kev kho cua sov. Nws lub siab plasticity, zoo vuam kev ua tau zoo, lub zog siab dua 1000 aluminium alloy, thiab corrosion kuj zoo ib yam li 1000 aluminium alloy, yog nruab nrab lub zog aluminium coil alloy nrog zoo corrosion kuj, nws siv dav, loj npaum li cas.
Lub luag hauj lwm ntawm alloying ntsiab thiab impurity ntsiab nyob rau hauv 3000 series txhuascoil
- Manganese: Manganese is the only main alloying element in 3××× aluminum alloy, its content is generally 1.0%~1.6%, the strength, plasticity and process performance of the alloy is good, manganese and aluminum can generate MnAl6 phase. The strength of the alloy increases with the increase of Mn content. When w (Mn) >1.6%, lub zog ntawm alloy nce. Txawm li cas los xij, vim yog tsim los ntawm ntau tus nkig compound MnAl6, cov hlau yog yooj yim tawg thaum deformed. Lub recrystallization kub ntawm cov alloy nce nrog qhov nce ntawm w (Mn). Vim yog lub peev xwm loj supercooling, cov hlau ua kom muaj kev sib cais loj hauv trachrystalline thaum lub sij hawm txias txias crystallization. Lub concentration ntawm manganese yog tsawg nyob rau hauv nruab nrab ib feem ntawm lub dendrites, tab sis siab nyob rau hauv lub ntug ib feem. Thaum muaj qhov pom tseeb manganese cais hauv cov khoom ua haujlwm txias, cov nplej ntxhib tau yooj yim tsim tom qab annealing.
- Hlau: Hlau tuaj yeem yaj hauv MnAL6 los ua (FeMn) Al6 tebchaw, yog li txo qhov solubility ntawm manganese hauv txhuas. Ntxiv w(Fe)=0.4% ~0.7% rau cov hlau, tab sis kom paub meej tias w(Fe+ Mn) Tsawg dua lossis sib npaug li 1.85%, tuaj yeem ua kom zoo dua cov nplej tom qab annealing ntawm daim ntawv, txwv tsis pub, tsim ntau ntawm coarse sheet (FeMn) Al6 tebchaw, yuav txo tau cov khoom thiab cov txheej txheem ntawm cov hlau alloy.
- Silicon: Silicon yog ib qho teeb meem impurity. Silicon thiab manganese tsim ib qho nyuaj ternary theem T (Al12Mn3Si2), uas tuaj yeem yaj cov hlau, ua rau quaternary theem (Al, Fe, Mn, Si). Yog hais tias ob qho tib si hlau thiab silicon muaj nyob rau hauv cov alloy, (Al12Fe3Si2) los yog (Al9Fe2Si2) yog tsim ua ntej.Phase, yuav rhuav tshem cov txiaj ntsig ntawm hlau. Yog li ntawd, lub w(Si) nyob rau hauv lub alloy yuav tsum tau tswj kom < 0.6%. Silicon kuj tuaj yeem txo cov dej solubility ntawm manganese hauv txhuas, thiab cov nyhuv yog ntau dua li cov hlau. Hlau thiab silicon tuaj yeem ua kom cov txheej txheem decomposition ntawm manganese los ntawm cov khoom siv supersaturated thaum lub sij hawm thermal deformation, thiab tuaj yeem txhim kho qee yam khoom siv.
- Magnesium: Ib qho me me ntawm magnesium (w(Mg)≈0.3%) tuaj yeem txhim kho cov nplej tom qab annealing ntawm cov hlau, thiab txhim kho nws lub zog tensile me ntsis. Tab sis nws tseem yuav ua rau lub ntsej muag gloss ntawm cov khoom siv annealed. Magnesium kuj tuaj yeem yog cov khoom siv alloying hauv Al-Mg alloy, ntxiv w (Mg) =0.3% ~ 1.3%, alloy zog nce, elongation (lub xeev annealed) txo, yog li kev txhim kho ntawm Al-Mg-Mn hlau alloy.
- Copper: Lub w(Cu) hauv cov alloy yog {{0}}.05% ~ 0.5%, uas tuaj yeem txhim kho nws lub zog tensile. Txawm li cas los xij, muaj ib qho me me ntawm tooj liab (w(Cu) =0.1%), nws tuaj yeem txo qhov corrosion kuj ntawm cov hlau, yog li cov w(Cu) hauv cov hlau yuav tsum tau tswj kom ua tau.<0.2%.
- Zinc: Thaum w(Zn) < {{0}}.5%, cov khoom siv kho tshuab thiab corrosion tsis kam ntawm alloy tsis cuam tshuam loj heev. Xav txog qhov weldability ntawm cov hlau, qhov txwv ntawm w (Zn) < 0.2% yog saws.