Aviation aluminium alloy khoom siv tshuab
Qhov kawg siv scenario ntawm aluminium alloy yog ncaj qha cuam tshuam rau tag nrho cov txheej txheem ntau lawm, thiab sib txawv daim ntawv thov scenarios nyob ntawm seb tus txheej txheem tswj ntawm cov txheej txheem ntau lawm, uas yog, cov txheej txheem ua.
01, siab zog aluminium alloy extrusion profile ntau lawm txheej txheem
High-strength aluminium alloy muaj ntau yam ntaub ntawv nyob rau hauv daim ntawv thov txheej txheem, feem ntau yog txhuas profiles, txhuas daim hlau, 3D luam ntawv hmoov thiab lwm yam ntaub ntawv. Ntawm lawv, aluminium alloy profiles muaj cov yam ntxwv zoo xws li lub teeb yuag, lub zog siab thiab cov txheej txheem vuam paub tab.Aluminiumprofiles tuaj yeem siv dav raws li cov qauv loj ntawm cov kabmob hauv aerospace thiab kev tsheb nqaj hlau. Cov txheej txheem ntau lawm ntawm aluminium profiles tsuas yog siv cov txheej txheem pultrusion molding txuas ntxiv los txhim kho kev tsim khoom thiab kev taw qhia prestress los txhim kho cov khoom siv ntawm cov khoom. Nyob rau hauv cov txheej txheem extrusion ntawm aluminium profiles, nyob rau hauv txoj kev nruam extrusion nrog ntau lub voj voog extrusion, ib qho kev sib txuas yuav raug tsim los ntawm ob sab extrusion billets uas nyob ib sab, ua rau ncua ntev ntawm lub interface nyob rau hauv qhov profile nce, vim hais tias cov transverse weld yuav zoo heev cuam tshuam rau lub extrusion billets. kev pabcuam lub neej ntawm aluminium profiles, ua rau muaj kev poob qis hauv lub neej qaug zog.
02, txheej txheem kev kho cua sov
Kev ua tau zoo ntawm aluminium alloy cov ntaub ntawv los txhim kho cov khoom muaj pes tsawg leeg, rau qhov loj nyob ntawm cov txheej txheem kev tsis sib xws hauv kev tswj cov txheej txheem tsim khoom, txoj kev kho cua sov tsim nyog tuaj yeem cuam tshuam rau kev ua tau zoo ntawm aluminium alloy cov ntaub ntawv, yog li kev ua haujlwm sib txawv Cov kev cai ntawm aluminium alloy yuav tsum tau tsim kom haum rau kev kho cua sov thev naus laus zis los txhim kho kev ua tau zoo ntawm cov ntaub ntawv aluminium alloy.
Siv cov txheej txheem kub kub homogenizing annealing los kho aluminium alloy, cov txheej txheem kev laus zog thiab cov seem uas tsis yog-equilibrium tuaj yeem ua kom yaj mus rau hauv cov matrix mus rau qhov siab tshaj plaws, thiab lawv cov kev faib tawm tsis sib xws tuaj yeem ua rau kom muaj zog ntawm cov khoom siv tom qab kev daws teeb meem, thiab ua tiav. cov nyhuv ntawm kev txhim kho kev laus ntxiv dag zog. Nyob rau tib lub sijhawm, raws li cov txheej txheem kev kho cua sov ua ke ntawm aluminium alloy forgings loj, uas yog kub deformation, nruab nrab kub homogenization thiab cov txheej txheem kub kub kho, tag nrho cov txheej txheem kev kho cua sov tuaj yeem txhim kho lub zog thiab txhim kho kev ntxhov siab corrosion. .
Generalaluminium alloy khoomCov txheej txheem kev daws teeb meem tau muab faib ua ob hom: kev kho cov khoom siv sib xyaw ua ke thiab kev kho cov khoom sib xyaw ua ke, ntawm cov khoom siv sib xyaw ua ke yog hais txog kev ntxiv dag zog rau cov khoom siv tshuaj thiab kev kho mob kub ua ntej nag lossis daus. Nyob rau hauv thaum ntxov ingot casting theem, homogenization annealing txheej txheem ntawm ib txwm kub kev kho mob thiab tsis kub kev kho mob yuav tswj cov nag lossis daus ntawm kev hloov cov ntsiab lus, thiab cov kev hloov cov ntsiab lus muaj peev xwm inhibition nyhuv ntawm recrystallization, uas yuav txhim kho lub substructure ntxiv dag zog rau cov nyhuv ntawm cov alloy mus rau ib tug zoo meej inhibition nyhuv. qee qhov, thiab tom qab ntawd txhim kho cov pob txha toughness thiab kev nyuaj siab corrosion kuj ntawm cov hlau, thiab ua kom tsis muaj zog anisotropy ntawm cov khoom.
Kev kho kev laus hauv kev kho cua sov ntawm high-strength aluminium alloy kuj plays lub luag haujlwm tseem ceeb hauv kev ua haujlwm ntawm aluminium alloy, thiab muaj peb hom kev kho kev laus, ncov aging, bipolar aging thiab regression reaging. Lub hom phiaj ntawm txoj kev loj hlob ntawm kev laus kev kho mob yog ua kom cov aluminium alloy siab zog, siab zog, siab dua corrosion kuj thiab qaug zog kuj thiab lwm yam kev ua tau zoo, kev kho cua sov lub xeev txoj kev loj hlob yog raws li cov kev taw qhia ntawm T6 rau T73 rau T76 rau T736 rau T77. , kev laus kev kho mob yog los ntawm lub ncov aging txoj kev loj hlob mus rau over-aging thiab ces mus rau rov qab los ntawm re-aging kho rau sequential txoj kev loj hlob.
Kev laus kub thiab lub sij hawm muaj feem cuam tshuam rau kev laus zog. Cov txheej txheem kev laus sib txawv tuaj yeem cuam tshuam ncaj qha rau lub zog tensile, yield zog, elongation thiab intergranular corrosion qib ntawm aluminium alloy. Raws li thaum ntxov xyoo 1989, Alcoa tau sau npe thiab tshaj tawm thawj RRA cov txheej txheem kev kho mob tshwj xeeb nrog lub npe ntawm kev kho cua sov lub xeev ntawm T77, uas kuj yog thawj cov ntawv thov kev lag luam ntawm cov txheej txheem kev kho cua sov, cov txheej txheem no tuaj yeem siv los ua kev kho cua sov. txheej txheem kev taw qhia rau 7150 aluminium alloy. Lub 7150 txhuas alloy tuab phaj thiab extruded qhov chaw uas tsim los ntawm cov txheej txheem no yog dav siv nyob rau hauv C-17 tub rog thauj aircraft. Hauv Suav teb, cov thev naus laus zis tseem ceeb ntawm kev ua haujlwm siab aluminium alloy siv T77 kev kho cua sov thev naus laus zis tseem nyob rau hauv txoj kev loj hlob thiab tsis tau muaj kev lag luam.
Cov txheej txheem kev kho cua sov kuj suav nrog kev kho cua sov deformation, kev kho cua sov deformation yog los ntawm kev sib xyaw ntawm cov thermoplastic deformation thiab cov txheej txheem kev kho cua sov, kev siv deformation tshav kub kev kho mob tuaj yeem siv los txhim kho kev faib tawm ntawm kev hloov nag lossis daus theem thiab cov qauv zoo ntawm cov hlau sab hauv. , tsim nyog deformation kev kho cua sov tuaj yeem ua rau txhuas alloy tau txais lub zog ntau dua thiab toughness thiab corrosion kuj. Cov txheej txheem kev kho cua sov deformation tau npaj siab thaum ntxov li xyoo 1981, uas yog siv rau hauv aerospace structural alloys. Kev kho cua sov deformation tau pom tseeb los ntawm kev txhim kho cov khoom siv ntawm 7050 thiab 7475 alloys.
Nyob rau hauv Suav teb, tsuas muaj ntau tshaj 100 hom aluminium alloy cua sov txheej txheem, thiab tseem muaj kev ncua deb ntawm ntau tshaj 370 hom ntawm txawv teb chaws. Peb yuav tsum ua kom txoj kev loj hlob ntawm cov txheej txheem kev kho cua sov thiab txo qhov kev ncua deb ntawm aluminium alloy yooj yim kho cua sov tshuab hauv cov teb chaws tsim.
03, siab zog aluminium alloy 3D luam ntawv txheej txheem
Kev txhim kho ntawm tus nqi qis, kev ua haujlwm siab thiab kev siv lub zog siab aluminium alloy txheej txheem thev naus laus zis tau txais kev saib xyuas ntawm aerospace, thiab loj-scale aluminium alloy los yog titanium alloy 3D luam ntawv thev naus laus zis yog qhov tseem ceeb ntawm kev saib xyuas aerospace tam sim no. 3D luam ntawv thev naus laus zis, raws li lub tswv yim thev naus laus zis yav tom ntej hauv Suav teb, ua lub luag haujlwm tseem ceeb hauv kev tsim cov ntawv thov engineering.
Txawm li cas los xij, hauv aerospace tebaluminium alloymuaj ntau daim ntawv thov, tab sis cov txheej txheem thov tiag tiag piv rau titanium alloy thiab cov ntaub ntawv sib xyaw muaj qee qhov tsis zoo, xws li aluminium alloy raug ntau dua 160 degree hauv kev siv cov khoom siv kho tshuab thiab corrosion kuj, qaug zog zog yuav poob, thiab nrog rau kev txuas ntxiv ntawm kev siv lub sijhawm yuav muag thiab kev laus. Yog li ntawd, kev ua haujlwm ntau yuav tsum tau ua los txhim kho kev ua tau zoo ntawm aluminium alloy hauv kev ua haujlwm hnyav.
Los ntawm kev ua tiav tas mus li ntawm 3D luam ntawv thev naus laus zis, kev txhim kho lub zog siab aluminium alloy hmoov kuj tseem txuas ntxiv, thiab cov ntaub ntawv aluminium alloy tshiab tseem tshwm sim thiab txuas ntxiv ua kom muaj zog tshiab hauv kev ua haujlwm. Piv txwv li, Amaero HOT Al, hom tshiab ntawm aluminium alloy sib koom ua ke tsim los ntawm Amaero thiab Monash University hauv Australia, tuaj yeem ua tiav kev ruaj ntseg ntev ntawm 260 degree C tom qab 3D luam ntawv thiab tom qab ntawd txuas ntxiv mus rau kev kho cua sov thiab hnub nyoog hardening. Txoj kev loj hlob ntawm kev lag luam high-strength aluminium alloy cov ntaub ntawv tshiab los hloov mus rau 3D luam ntawv txheej txheem kom ua tiav qhov kev tsim khoom ntse ntawm aluminium alloy tswj tau thiab cov duab zoo heev tau dhau los ua qhov tseem ceeb ntawm kev txhim kho yav tom ntej. Aluminium alloy 3D luam ntawv txoj kev loj hlob tuaj yeem xav tau, feem ntau yog siv hauv aerospace thiab tub rog teb.
