Lub zog muaj zog, Corrosion-resistant Aluminium Alloy Cov Khoom Siv rau Aerospace
Nrog txoj kev loj hlob tsis tu ncuantawm niaj hnub aerospace teb, kev lag luam nuclear thiab kev lag luam tsheb thauj mus los, cov kev xav tau siab dua tau muab tso rau pem hauv ntej rau kev ua tiav ntawm cov khoom siv, thiab lub cim tshiab ntawm ultra-siab zog aluminium alloy nrog lub teeb yuag, siab zog, siab toughness, siab tawg toughness thiab kev ntxhov siab. corrosion kuj yog undoubtedly thawj xaiv.
Ultra-siab zog aluminium alloy feem ntau yog hais txog txhuas alloy nrog cov khoom muaj zog tshaj 500MPa, thiab feem ntau yog cov superhard txhuas ntawm 7 series. Cov txheej txheem ntawm aluminium alloy no yog tsim los rau hauv cov ntsiab lus ntawm kev siv aerospace, thiab tam sim no tau tsim los rau hauv cov ntaub ntawv tseem ceeb rau cov tub rog thiab pej xeem aircraft nyob hauv lub ntiaj teb, suav txog 70-80% ntawm qhov feem ntawm cov khoom siv dav hlau, thiab nyob rau hauv ntau lub teb es tsis txhob kim titanium alloys, dhau los ua ib qho tseem ceeb ntawm cov khoom siv sib xws.
** Aerospace aluminium alloy kev txhim kho keeb kwm yav dhau thiab qhov xwm txheej tam sim no **
Aluminium alloy, raws li ib tug kuj paub tab lub teeb yuag high-strength alloy cov ntaub ntawv, yog siv nyob rau hauv aerospace, aluminium alloy cov ntaub ntawv feem ntau yog siv raws li cov ntaub ntawv, thiab muaj ntau zog thiab ua hauj lwm zoo dua hlau.
Aerospace teb tsuas yog tsim muaj zog, siab tawv thiab corrosion kuj aluminium alloy cov ntaub ntawv kom ua tau raws li qhov hnyav ntawm kev siv aerospace, daim ntawv thov yog ntau dua 2000 series thiab 7000 series aluminium alloy, raws li cov txheej txheem siab zog aluminium alloy kev txhim kho. thiab cov khoom tsim kev txhim kho, Los ntawm cov txheej txheem tsim tawm tshiab xws li hmoov hlau metallurgy thiab dav hlau molding, lub teeb yuag aluminium alloy cov ntaub ntawv nrog kev ua tau zoo dua yog tsim, thiab kev tshawb fawb txog cov khoom siv aluminium matrix composite thiab superplastic aluminium alloy cov ntaub ntawv yog nqa tawm.
Nyob rau hauv txoj kev loj hlob thiab daim ntawv thov txheej txheem ntawm lub teeb yuag high-strength aluminium alloy, kev nyuaj siab corrosion teeb meem yog lub ntsiab teeb meem nyob rau hauv tag nrho cov ntaub ntawv keeb kwm ntawm txhuas alloy, yuav ua li cas kom tsis muaj zog los yog ncua kev nyuaj siab corrosion teeb meem nyob rau hauv kev siv ntawm high-zog aluminium alloy tau ua. qhov teeb meem tseem ceeb nyob rau hauv daim ntawv thov txheej txheem ntawm aluminium alloy.
2000 seriesaluminium alloyFeem ntau Cu yog lub ntsiab alloying lub ntsiab, aluminium alloy cov ntaub ntawv los ntxiv qhov tsim nyog tus nqi ntawm Cu lub ntsiab npaj nyob rau hauv lub zog, tshav kub kuj, kev ua hauj lwm yuav zoo dua, tab sis cov corrosion kuj yuav raug txo, vim hais tias cov kev taw qhia ntawm Cu element yuav zoo dua. ua kom nws yooj yim dua los qhia intercrystalline corrosion hauv aluminium alloy, cov khoom muaj pes tsawg leeg cuam tshuam ncaj qha rau kev ua haujlwm ntawm aluminium alloy. Yog li ntawd, 2000 series aluminium alloy feem ntau coated nrog ntshiab txhuas los yog 6000 series txhuas alloy rau saum npoo raws li electrochemical tiv thaiv zaj duab xis ntawm lub ntsiab aluminium alloy los txhim kho nws corrosion kuj. Tom qab ntawd, cov kws tshawb fawb tau ua ntau yam kev tshawb fawb txog cov txheej txheem los txhim kho cov kev ntxhov siab corrosion ntawm cov qib sib txawv ntawm aluminium alloy, uas tau ncua cov qib ntawm kev ntxhov siab corrosion ntawm aluminium alloy mus rau qee yam.
Nyob rau hauv aerospace teb, lub ntsiab muaj pes tsawg leeg ntawm 2000 series txhuas alloy yog tsuas yog txhuas (Al), tooj liab (Cu) thiab magnesium (Mg), thiab lub ntsiab muaj pes tsawg leeg ntawm 7000 series txhuas alloy yog Al, zinc (Zn), Mg thiab Cu. . Kuj tseem muaj qee qhov kev ua tau zoo (siab zog, siab toughness, corrosion resistance) aluminium alloy cov ntaub ntawv tau los ntawm kev ntxiv qee yam tshwj xeeb. Tam sim no, txoj hauv kev tseem ceeb kom tau txais kev ua haujlwm siab ntawm aluminium alloy cov ntaub ntawv yog hloov cov melting thiab casting tej yam kev mob.
Cov khoom siv aluminium alloy yog cov khoom siv tseem ceeb los xyuas kom muaj kev nyab xeeb ntawm lub dav hlau. Kev xaiv thiab kev ua tau zoo ntawm cov khoom siv aluminium alloy nyob rau hauv qhov sib txawv yog ncaj qha ntsig txog kev nyab xeeb thiab kev ntseeg siab ntawm cov dav hlau. Kev ua tsis tiav ntawm cov khoom siv aluminium alloy hauv aviation yog ncaj qha ntsig txog kev nyab xeeb ntawm lub neej thiab yuav tsum tau them nyiaj ntau.
** Txawv teb chaws aerospace aluminium alloy khoom tsim kho **
Nyob rau xyoo 1960, Tebchaws Meskas tau txhim kho los ntawm 7075 aluminium alloy thiab tsim kom muaj zog dua, tawv dua thiab ntau dua kev ntxhov siab-corrosion resistant 7050 alloy, feem ntau yog siv hauv F-18 compression structural qhov chaw, thiab tom qab ntawd tsim 7150 alloy rau Kev tsim khoom ntawm Boeing 757/767 thiab Airbus A301 thiab lwm yam dav hlau loj dav hlau sab sauv tis. Nyob rau xyoo 1980, Tebchaws Asmeskas thiab lwm yam ua tiav tau tsim 7055 alloy raws li 7150, lub zog yog kwv yees li 10% siab dua 7150, thiab muaj kev ua haujlwm siab, uas yog siv rau sab sauv daim tawv nqaij thiab tis stringer ntawm Boeing 777 aircraft. .
** Qhov sib txawv ntawm Tuam Tshoj thiab thoob ntiaj teb qib siab thiab kev coj ua ntawm kev txhim kho **
Hauv Suav teb, txawm hais tias cov ntaub ntawv aluminium alloy tau tsim tau ntau xyoo, tseem muaj qhov sib txawv loj piv nrog rau qib siab thoob ntiaj teb. Qhov kev ua tau zoo tshwj xeeb yog: ua ntej, cov khoom lag luam feem ntau yog imitation, cov khoom siv aluminium alloy nrog kev ywj pheej kev txawj ntse txoj cai tseem tsis tau muaj, thiab cov txheej txheem rau kev tsim cov khoom siv aluminium alloy tseem tsis tau tsim; Qhov thib ob, cov kev tshawb fawb hauv paus tsis muaj zog, lub sijhawm txhim kho luv luv, thiab cov ntaub ntawv khaws cia tsis txaus; Thib peb, cov cuab yeej tsim khoom thiab kev ua haujlwm yog rov qab, thiab cov khoom lag luam tswj kev ua haujlwm tsis zoo tag nrho.
Nyob rau hauv kev pom ntawm no, yav tom ntej txoj kev loj hlob kev taw qhia ntawm aluminium alloy cov ntaub ntawv nyob rau hauv Tuam Tshoj yuav tsum yog:
Hloov cov ntsiab lus thiab qhov sib piv ntawm cov khoom siv;
Tsim cov khoom siv aluminium alloy sib txawv raws li cov kev xav tau sib txawv, txhim kho kev ua tau zoo ntawm aluminium alloy los ntawm kev hloov cov khoom siv hauv kev ua haujlwm, txhim kho cov ntsiab lus ntawm cov khoom siv alloy, thiab txhim kho kev ua tau zoo ntawm aluminium alloy los ntawm kev ntxiv cov ntsiab lus xws li zirconium (Zr), scandium (Sc), erbium (Er) thiab lwm yam microalloying txoj kev;
Ntxiv purify cov hlau, txo Fe, Si thiab lwm yam impurities, tswj cov ntsiab lus ntawm impurities, thiab tsim high-toughness thiab high-strength aluminium alloy cov ntaub ntawv;
Tsim cov cuab yeej kho cua sov tshiab, tsim cov txheej txheem kev kho cua sov sib txawv rau txhuas alloys nrog cov kev ua tau zoo sib txawv, thiab tsim kom muaj cov txheej txheem kev qhia tshwj xeeb kom paub meej cov txheej txheem kev ruaj ntseg ntawm qib sib txawv ntawm txhuas alloys.
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