Txhua lub alloy muaj cov feem pua ntawm cov ntsiab lus alloying uas muab lub hauv paus aluminium qee qhov txiaj ntsig zoo.In 2024 aluminium alloy, cov feem pua ntawm cov ntsiab lus no yog 4.4% tooj liab, 1.5% magnesium, thiab 0.6% manganese. lub zog siab, xws li tooj liab, magnesium, thiab manganese zoo heev ua rau lub zog ntawm aluminium alloys.Txawm li cas los xij, lub zog no muaj qhov tsis zoo.Qhov feem ntau ntawm cov tooj liab hauv 2024 aluminium zoo heev txo nws cov corrosion kuj.Muaj feem ntau cov kab ntawm impurity ntsiab (silicon. , hlau, zinc, titanium, thiab lwm yam), tab sis cov no tsuas yog lub hom phiaj muab siab rau ntawm tus neeg yuav khoom thov.Nws qhov ceev yog 2.77g / cm3 (0.100 lb / hauv 3), me ntsis siab dua cov ntshiab txhuas (2.7g / cm3, 0.098 lb. /in3). 2024 txhuas yog yooj yim heev rau tshuab thiab muaj machinability zoo, cia nws txiav thiab extruded thaum xav tau.
Raws li tau hais, liab qab 2024 aluminium alloys corrode yooj yim dua li feem ntau lwm cov txhuas alloys. Cov neeg tsim khoom tau txais ib ncig ntawm qhov no los ntawm txheej txheej ntawm cov hlau tsis muaj zog corrosion (hu ua "galvanizing" lossis "cladding"). purity aluminium los yog lwm yam alloy, thiab yog nrov tshaj plaws nyob rau hauv clad hlau los xij, qhov twg cov nkauj xwb alloy yuav sandwiched ntawm lub cladding txheej.Clad aluminium yog li nrov hais tias ib tug ntau yam ntawm AlClad cov khoom tau tsim thiab dav siv los muab qhov zoo tshaj plaws ntawm ob lub ntiaj teb no rau cov tsis muaj zog corrosive alloys xws li 2024.Qhov kev loj hlob no ua rau 2024 aluminium tshwj xeeb yog qhov tseem ceeb vim tias nws lub zog tuaj yeem ua tiav qhov twg liab qab alloys feem ntau degrade.
Qee cov aluminium alloys, xws li 2xxx, 6xxx, thiab 7xxx series, tuaj yeem ntxiv dag zog siv cov txheej txheem hu ua kev kho cua sov.Cov txheej txheem yuav tsum ua kom sov cov hlau rau qhov kub thiab txias kom sib tov lossis "homogenize" cov ntsiab lus alloying rau hauv lub hauv paus hlau, ces. quenching nyob rau hauv kev daws teeb meem rau xauv lub ntsiab nyob rau hauv qhov chaw.Cov kauj ruam no yog hu ua "kev daws teeb meem thaum tshav kub kub kev kho mob".Cov ntsiab lus no tsis ruaj khov, thiab thaum lub workpiece txias, lawv precipitate tawm ntawm lub txhuas "kev daws teeb meem" raws li cov tebchaw (piv txwv li, tooj liab atoms yuav precipitate. tawm raws li Al2Cu).Cov tebchaw no ua rau lub zog tag nrho ntawm cov hlau los ntawm kev cuam tshuam nrog cov txhuas microstructure, cov txheej txheem hu ua "aging." Kev nkag siab txog kev kho cua sov thiab cov txheej txheem kev laus yog qhov tseem ceeb vim tias 2024 txhuas los ntawm ntau hom thiab tau muab cov npe. xws li 2024-T4, 2024-T59, 2024-T6, thiab lwm yam, nyob ntawm seb cov kauj ruam no ua li cas.
Hom 2024 aluminium qhov zoo tshaj plaws lub zog zoo tuaj tsis tsuas yog los ntawm nws cov muaj pes tsawg leeg, tab sis kuj los ntawm nws cov txheej txheem kho cua sov.Muaj ntau cov txheej txheem sib txawv lossis "tempering" ntawm txhuas (muab lub npe -Tx, qhov twg x yog 1 txog 5 tus lej ntev. ), thiab txawm hais tias lawv yog cov hlau qub, lawv txhua tus muaj lawv tus kheej cov khoom tshwj xeeb. Thawj tus lej tom qab "T" qhia txog cov txheej txheem kev kho cua sov, thiab qhov kev xaiv thib ob mus rau tus lej thib tsib qhia txog kev tsim khoom tshwj xeeb.Piv txwv li, hauv ib tug 2024-T42 temper, ib tug "4" qhia hais tias cov hlau yog tov thaum tshav kub kub kho thiab ib txwm muaj hnub nyoog, tab sis ib tug "2" qhia hais tias cov hlau yuav tsum tau tshav kub kho los ntawm buyer.Qhov system yuav tsis meej pem, yog li nyob rau hauv tsab xov xwm no peb yuav tsuas qhia lub zog muaj nuj nqis rau ib qho yooj yim tempered 2024-T4 txhuas.
Muaj qee yam khoom siv uas tuaj yeem siv los qhia txog aluminium alloys.For alloys xws li 2024 aluminium, qee qhov kev ntsuas tseem ceeb yog qhov kawg ntawm lub zog, lub zog tawm los, lub zog shear, qaug zog, thiab elastic thiab shear moduli.Cov txiaj ntsig no yuav muab ib qho lub tswv yim hais txog lub machinability, lub zog thiab muaj peev xwm siv ntawm cov khoom thiab tau muab sau tseg nyob rau hauv Table 1 hauv qab no.
Lub zog muaj zog thiab qhov kawg ntawm lub zog yog qhov siab tshaj plaws kev ntxhov siab uas ua rau cov khoom tsis ruaj khov thiab ruaj khov deformation ntawm cov qauv alloy, feem.Rau kev sib tham hauv qhov tob ntawm cov txiaj ntsig no, xav tias dawb tuaj xyuas peb tsab xov xwm ntawm 7075 Txhuas Alloy.Lawv tseem ceeb thaum alloys yog siv nyob rau hauv static daim ntaub ntawv uas yuav tsum tsis txhob deformation mus tas li, xws li nyob rau hauv lub tsev los yog cov khoom siv kev ruaj ntseg.2024 txhuas muaj impressive qhov kawg thiab yield zog ntawm 469 MPa (68,000 psi) thiab 324 MPa (47,000 psi), ua rau nws txaus nyiam rau siab zog. cov khoom siv xws li aluminium tubing.
Thaum kawg, elastic modulus thiab shear modulus yog qhov tsis qhia tias yuav ua li cas "elastic" cov khoom muab rau deform.Lawv muab lub tswv yim zoo ntawm cov khoom siv rau kev deformation mus tas li.Lub 2024 aluminium alloy muaj elastic modulus ntawm 73.1 GPa. (10,600 ksi) thiab shear modulus ntawm 28 GPa (4,060 ksi), uas yog txawm ntau dua li lwm cov high-strength aircraft alloys xws li 7075 txhuas.
Hom 2024 txhuas muaj kev ua haujlwm zoo heev, kev ua haujlwm zoo, lub zog siab, thiab tuaj yeem tiv thaiv corrosion, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev siv dav hlau thiab tsheb.
Post lub sij hawm: Jun-30-2022