Ntau hom extruded aluminium alloys thiab lawv cov yam ntxwv

Dab tsi yog cov yam ntxwv ntawm ntau hom kev rho tawm aluminium txuas ntawm tes? Tuam Tshoj aluminium extrusion Hoobkas kom paub ntau ntxiv:

(1) 1035 alloy.

1035 alloy yog kev lag luam ntshiab txhuas nrog tsawg dua 0.7% impurities, ntawm cov hlau thiab silicon yog lub ntsiab impurities.Iron thiab silicon thiab qee lwm cov hlau impurities tuaj yeem txhim kho lub zog me ntsis, tab sis ho txo ​​qhov plasticity thiab kev coj ntawm lub alloy.

Kev lag luam ntshiab aluminium muaj tshuaj lom neeg ruaj khov nyob rau hauv ntau cov xov xwm, uas yog siab dua lwm cov hlau nrog lub peev xwm loj.Qhov siab cov tshuaj lom neeg ruaj khov ntawm aluminium yog vim kev tsim ntawm nyias, ntom oxide zaj duab xis nyob rau saum npoo ntawm txhuas.

Qhov tsis muaj zog tsawg hauv aluminium (tshwj xeeb yog hlau thiab silicon), lub siab dua nws qhov kev xeb tawm.Ntawm qhov tseeb, tsuas yog cov magnesium thiab manganese tsis txo qhov tsis kam xeb ntawm txhuas.

Cov khoom lag luam kawg ntawm 1035 alloy tau muab nyob rau hauv annealing thiab kub extrusion.Yuav li cas los xij, tsis hais lub xeev ntawm cov khoom xa tuaj, kev ua tiav ntawm cov txheej txheem txuas ntxiv yog qhov ncab ncaj ncaj, uas tuaj yeem ncaj ncaj rau ntawm lub tshuab yob ncaj.Thaum ncaj, lub cuab yeej lub zog tau txhim kho me ntsis, tab sis cov khoom siv yas hloov qis dua.

Tsis tas li ntawd, qhov hluav taws xob conductivity ntawm lub alloy yog me ntsis txhim kho thaum lub sij hawm txias deformation.Yog li ntawd, thaum cov ntaub ntawv kev ua tau zoo cov khoom yuav tsum nruj, nws yog ib qho tsim nyog yuav tsum xav txog cov kev hloov saum toj no thaum ncaj.

Thaum qhov kub tau nce ntxiv, lub zog thiab plasticity ntawm 1035 alloy nce siab zuj zus.Thaum qhov ntsuas kub qis dua xoom, lub zog thiab cov khoom yas ntawm cov thoob yog qhov zoo dua.

(2) 3 a21 alloy.

Alloy 3A21 yog deformed alloy hauv AlMn binary system.Nws muaj qhov tsis kam tiv thaiv corrosion thiab zoo ib yam li cov uas muaj ntawm 1035 alloy.Tus cov khoom tiav ib nrab ntawm 3A21 alloy yog tsim nyog rau roj vuam, hydrogen vuam, argon arc vuam thiab hu rau vuam.Qhov corrosion tsis kam ntawm lub weld yog tib yam li ntawm lub hauv paus hlau.Qhov alloy muaj qhov zoo deformation zoo nyob rau hauv lub xeev txias thiab kub, thiab qhov kub thiab txias ntawm thermal deformation yog dav heev (320 ~ 470C) .Qhov alloy tsis tuaj yeem raug ntxiv dag zog los ntawm kev kho cua sov thiab cov ntsiab lus hlau yog muab rau hauv annealed lossis extruded lub xeev.

Cov nyhuv ntawm deformation kub thiab deformation ceev ntawm deformation tsis kam ntawm 3A21 alloy yog tsawg tshaj li qhov ntawm kev lag luam ntshiab txhuas.

(3) 6063 alloy.

Raws li tus neeg sawv cev niaj hnub ntawm a1-mg-si alloy, alloy 6063 muaj zoo tshaj plaws extrudability thiab weldability, thiab yog cov khoom nyiam rau lub tsev qhov rais thiab qhov rooj.Nws yog qhov zoo los ntawm siab yas thiab corrosion tsis kam nyob rau hauv qhov xwm txheej ntawm kub thiab ceev ntawm siab machining. .Tsis muaj kev nyuaj siab corrosion tendency.During welding, qhov tsis kam tiv thaiv corrosion tsis tshua poob.

Alloy 6063 muaj zog muaj zog thaum lub sijhawm kho cua sov.Qhov lub ntsiab muaj zog hauv cov alloy yog MgSi thiab AlSiFe.Yog lub zog tensile ntawm 6063 alloy extruded profiles yog 98 ~ 117.6mpa hauv annealing lub xeev, lub zog tensile yuav tau nce mus rau 176.4 ~ 196MPa tom qab quenching thiab ntuj laus dua.Thaum lub sijhawm no, qhov txheeb ze elongation tsawg zuj zus (ntawm 23% ~ 25% mus rau 15% ~ 20%). Tom qab cov laus kev laus ntawm 160 ~ 170 ℃, cov alloy tuaj yeem tau txais cov khoom muaj zog ntau dua. Lub sijhawm no, lub zog tensile tau nce mus rau 269.5 ~ 235.2MPa.Txawm li cas los xij, hauv kev laus kev laus, cov khoom yas poob qis dua ntau dua (= 10% ~ 12%).

Lub sijhawm nruab nrab ntawm quenching thiab artificial laus muaj qhov cuam tshuam zoo ntawm qhov muaj zog ntawm 6063 alloy (nyob rau hauv cov laus kev laus). Nrog rau qhov nce ntawm lub sijhawm luv los ntawm 15min txog 4h, lub zog tensile thiab tawm los lub zog txo mus rau 29.4 ~ 39.2MPa.Qhov lub rwb thaiv lub sijhawm thaum lub sijhawm ua haujlwm laus tsis muaj qhov cuam tshuam loj ntawm cov khoom siv ntawm 6063 alloy cov khoom tiav ib nrab.

(4) 6 li cas a02 alloy.

Ordinary 6A02 alloy (tsis muaj qhov txwv ntawm cov ntsiab lus tooj liab) belongs rau a1-mg-si-cu series alloy.Nws muaj cov khoom yas zoo heev ntawm qhov kub-hloov qhov xwm txheej ntawm lub siab machining thiab ntawm chav kub.

Hauv kev tsim ntawm 6A02 alloy extruded semi-tiav cov khoom, txawm hais tias nws cov ntsiab lus manganese yog qhov me me, tab sis tom qab kev kho cua sov tuaj yeem tswj tsis muaj cov qauv recrystallized, yog li ntawd, tuaj yeem txhim kho lub zog ua haujlwm zoo dua.Li 6063 alloy, 6A02 alloy yog sai dag zog thaum kho cov cua sov, thiab nws cov ntsiab lus tseem ceeb yog Mg2Si thiab W (AlxMg5Si4Cu).

Lub zog tensile tuaj yeem tau nce los ntawm ntuj laus laus tom qab quenching, uas yog ob zaug siab tshaj qhov uas nyob hauv kev sib koom tes, thiab txog ob zaug siab npaum li ntawd hauv qab cov laus kev laus tom qab quenching.Txawm li cas los xij, nyob rau hauv cov laus kev laus, cov cuab yeej yas poob qis dua (txheeb ze elongation txo los ntawm thaj tsam li ntawm 1/2, thiab qhov txheeb ze ntawm qhov ntsuas tsawg dua li 2/3).

Lub 6A02 alloy yog qhov txawv ntawm 6063 alloy. Lub 6063 alloy muaj qhov zoo corrosion nyob rau hauv ob qho tib si kev laus lub xeev thiab cov laus laus lub xeev, thaum lub sij hawm tsis kam ntawm 6A02 alloy tsawg zuj zus pom thiab intercrystalline corrosion feem ntau zoo nkaus li.Qhov siab dua cov ntsiab lus tooj liab hauv 6A02 alloy, ntau qhov kev tsis kam corrosion.

Hauv txoj kev xeb, raws li cov ntsiab lus tooj liab nyob rau hauv lub alloy nce, qhov kev siv ntawm lub zog poob kuj nce ntxiv. Piv txwv li, yog tias cov ntsiab lus tooj liab yog 0.26%, tom qab 6 lub hlis ntawm kev kuaj (txaws nrog 30% NaCl daws), lub zog tensile ntawm cov alloy txo qis li 25%, thaum nws cov txheeb ze elongation poob qis txog 90% .Yog li ntawd, thiaj li txhim kho kev txhim kho corrosion, cov ntsiab lus tooj liab nyob rau hauv lub alloy yog feem ntau tswj qis dua 0.1%.

6A02 alloy tuaj yeem hnov ​​pom welded, yob welded thiab argon arc welded.Qhov lub zog ntawm qhov sib koom tes txuas yog 60% ~ 70% ntawm qhov ntawm cov ntawv hlau.Qhov tom qab quenching thiab laus, lub zog ntawm welded sib koom tes tuaj yeem ncav cuag 90% ~ 95% ntawm qhov ntawd ntawm txhoj hlau.

(5) 5 a06 alloy.

Alloy 5A06 belongs rau al-mg-mn series.Nws yog yas ntau ntawm chav tsev kub thiab nyob rau qhov kub thiab txias, thiab zoo heev tiv thaiv corrosion nyob rau hauv ntau yam xov xwm, suav nrog seawater.The zoo corrosion kuj thiab weldability ntawm lub alloy ua nws dav siv hauv kev tsim kho kev lag luam nkoj.Qhov weld ntawm lub zog muaj qhov muaj zog thiab cov cuab yeej yas.Qhov chav sov, lub zog ntawm welded sib koom tes tuaj yeem ncav cuag 90% ~ 95% ntawm qhov ntawm cov ntawv hlau.

Qhov saum toj no yog kev qhia ntawm ntau hom kev rho tawm tshwj xeeb alloys thiab lawv cov yam ntxwv.Peb yog a kev cai txhuas extrusion tuam txhab, tuaj yeem muab: square aluminium extrusion, round aluminium extrusion thiab lwm yam kev pabcuam kev ua haujlwm, txais tos sab laj