1. Kev xaiv cov ntsiab lus ntawm cov hlau alloy
Cov muaj pes tsawg leeg ntawm 6063 alloy muaj ntau yam. Ntxiv nrog rau cov khoom siv kho tshuab thiab cov khoom ua tiav, cov khoom sib xyaw tshwj xeeb yuav tsum tau txiav txim siab txog kev kho deg, uas yog, yuav ua li cas kho qhov profile thiab hom dab tsi yuav tsum tau txais. Piv txwv li, los tsim cov khoom abrasive, Mg / Si yuav tsum me dua. Feem ntau, qhov ntau ntawm Mg/Si=1-1.3 raug xaiv. Qhov no yog vim hais tias muaj ib tug kuj dhau Si, uas yog conducive kom tau ib tug sandy nto ntawm profile; Yog tias qhov tsim tau ci, Rau cov khoom siv, cov ntaub ntawv xim thiab cov ntaub ntawv xim electrophoretic, Mg/Si yog qhov zoo dua nyob rau hauv qhov ntau ntawm 1.5-1.7. Qhov no yog vim muaj tsawg dua silicon, qhov profile muaj corrosion kuj zoo, thiab nws yog ib qho yooj yim kom tau ib tug kaj nto. Tsis tas li ntawd, qhov extrusion kub ntawm aluminium profiles feem ntau xaiv nyob ib ncig ntawm 480 degree. Yog li ntawd, tag nrho cov ntsiab lus ntawm alloying ntsiab lus magnesium thiab silicon yuav tsum nyob ib ncig ntawm 1.0%, vim hais tias ntawm 500 degree, cov khoom solubility ntawm Mg2Si nyob rau hauv txhuas tsuas yog 1.05%, uas yog siab dhau. Cov ntsiab lus ntawm cov ntsiab lus alloy yuav ua rau Mg2Si tsis ua kom yaj tag rau hauv matrix thaum quenching, thiab yuav muaj ntau dua Mg2Si theem. Cov Mg2Si no yuav tsis muaj kev cuam tshuam ntau rau lub zog ntawm cov hlau, tab sis yuav cuam tshuam rau kev kho qhov chaw ntawm qhov profile thiab ua rau oxidation, xim (lossis xim) ua rau muaj teeb meem.
2. Kev cuam tshuam ntawm impurity ntsiab
① Hlau, hlau yog lub ntsiab impurity nyob rau hauv aluminium alloy. Hauv 6063 alloy, lub teb chaws tus qauv qhia tias nws yuav tsum tsis txhob ntau tshaj 0.35. Yog hais tias thawj-chav kawm ntawv muaj txhuas ingots siv nyob rau hauv ntau lawm, cov ntsiab lus hlau feem ntau yuav tswj tau qis dua 0.25, tab sis yog hais tias yuav txo tau cov nqi ntau lawm, yog hais tias ib tug loj npaum li cas ntawm recycled seem txhuas los yog lwm yam txawv teb chaws txhuas siv, cov ntsiab lus hlau yuav yooj yim tshaj tus qauv. Muaj ob hom Fe hauv txhuas, ib qho yog theem (Al9Fe2Si2) nrog lub koob zoo li (lossis flake) qauv, thiab lwm yam yog theem (Al12Fe3Si) nrog cov qauv granular. Cov txheej txheem sib txawv muaj qhov sib txawv ntawm cov txhuas alloys. Lawv muaj qhov sib txawv. Cov theem ntawm cov qauv flaky yog qhov kev puas tsuaj ntau dua li cov theem ntawm cov qauv granular. Cov theem tuaj yeem ua rau saum npoo ntawm aluminium profile ntxhib, deteriorate cov khoom thiab corrosion kuj, thiab nto ntawm oxidized profile yuav tig xiav thiab glossy. Txo, lub suab ntshiab tsis tuaj yeem tau txais tom qab xim, yog li ntawd, cov ntsiab lus hlau yuav tsum tau tswj.
Txhawm rau txo qhov teeb meem ntawm cov hlau, cov kev ntsuas hauv qab no tuaj yeem ua.
a) Tag nrho cov cuab yeej siv rau smelting thiab casting yuav tsum tau coated nrog cov xim ua ntej siv los txo cov hlau tawg rau hauv cov kua txhuas ntau li ntau tau.
b) Kho cov nplej, ua kom cov hlau theem zoo dua thiab me dua, thiab txo nws cov teebmeem.
c) Ntxiv qhov tsim nyog ntawm strontium los hloov cov theem mus rau theem thiab txo nws cov teebmeem.
d) Ua tib zoo xaiv cov khoom pov tseg thiab lwm yam khoom siv kom txo tau cov hlau hlau, hlau ntsia hlau, cov ntaub ntawv hlau thiab lwm cov khib nyiab los ntawm kev nkag mus rau hauv lub qhov cub aluminium melting thiab ua rau cov ntsiab lus hlau nce ntxiv.
② Lwm yam impurity hais
Muaj ob peb lwm yam impurity nyob rau hauv electrolytic aluminium ingots, uas yog deb tshaj li lub teb chaws tus qauv. Thaum rov ua dua cov khoom seem aluminium, cov qauv yuav raug tshaj; Hauv kev tsim khoom, tsis yog tsuas yog yuav tsum tau tswj hwm txhua lub ntsiab lus kom tsis pub dhau tus qauv, tab sis kuj yuav tsum tswj tag nrho cov khoom tsis huv. Tus nqi tsis tuaj yeem tshaj tus qauv. Thaum cov ntsiab lus ntawm ib lub ntsiab lus tsis tshaj tus qauv, tab sis tag nrho cov nyiaj ntau tshaj tus qauv, cov impurity cov ntsiab lus tseem yuav muaj kev cuam tshuam zoo rau qhov zoo ntawm qhov profile. Dab tsi xav tau tshwj xeeb yog qhov kev coj ua tau ua pov thawj tias thaum cov ntsiab lus zinc nce mus txog {{0}}}05 (tsis ntau dua 0.1 hauv lub teb chaws tus qauv) cov pob dawb yuav tshwm rau ntawm qhov chaw. profile tom qab oxidation, yog li cov ntsiab lus zinc yuav tsum tau tswj hauv qab 0.05.
