Txheej txheem cej luam ntawm 7075 Aluminium Alloy
7075 aluminium alloy yog asiab heev -lub zog ua lag luam thiab aerospace- qib aluminium, dav lees paub rau nws qhov tshwj xeeb mechanical kev ua tau zoo. Raws li ib qho ntawm cov muaj zog aluminium alloys muaj, 7075 feem ntau xaiv rau cov ntawv thov nyob qhov twglub zog siab tshaj plaws thiab thauj khoom -cov kabmob muaj peev xwm yog qhov tseem ceeb thiabqhov twg corrosion kuj tsis yog thawj qhov yuav tsum tau ua.
GNEE, raws li tus kws tshaj lij txhuas cov khoom lag luam, muaj kev paub dhau los muab 7075 txhuas alloy rau aerospace, tsheb, kev tiv thaiv, cuab yeej, thiab siab -kev ua haujlwm engineering thoob ntiaj teb.
Stress Corrosion Resistance thiab Strength yam ntxwv
7075 aluminium xa khoomzoo heev tawm los thiab tensile zog, uas txawv nyob ntawm qhov xaiv temper. Thaum nws qhov kev tiv thaiv corrosion feem ntau qis dua li ntawm 5xxx lossis 6xxx series alloys, tshwj xeeb tempers xws liT73 thiab T76ho txhim kho kuj musKev ntxhov siab corrosion cracking (SCC).
Nyob ntawm qhov kub thiab txias, 7075 txhuas tuaj yeem ua tiav:
Yield zog:mus txog ~ 465 MPa
Tensile zog:mus txog ~ 540 MPa
Qhov kev sib xyaw tshwj xeeb ntawm lub zog thiab qaug zog ua rau nws yog cov khoom siv rau kev siv dav hlau thiab siab - kev siv kev ntxhov siab.
Daim ntawv thov ntawm 7075 Aluminium
Vim nws txoj kev ua haujlwm zoo heev, 7075 aluminium alloy feem ntau siv hauv:
Aircraft structural Cheebtsam
Aerospace fittings thiab thav ntawv
Automotive kev ua tau zoo qhov chaw
Gears thiab shafts
Siab -cov pwm thiab cov cuab yeej
Kev tiv thaiv thiab tub rog kho vajtse
GNEE muab 7075 txhuas hauv ntau hom khoom, suav nrogdaim hlau, nplooj ntawv, flats, puag ncig tuav, square bar, hex tuav, hollow bar, raj (puab thiab duab plaub), strips, thiab raws, nrog customizable qhov ntau thiab tsawg muaj.
Muaj Tempers ntawm 7075 Txhuas los ntawm GNEE
Txhawm rau ua kom tau raws li ntau hom kev tsim vaj tsev thiab kev ua haujlwm, GNEE muaj ntau yam tempers ntawm 7075 txhuas alloy.
7075-O (Annealed)
Ib tug mos, tsis kho mob muabMaximum ductility thiab tsawg zog, zoo tagnrho rau kev ua haujlwm.
Tensile zog: ~ 276 MPa
Tawm Zog: ~ 145 MPa
Elongation: 9-10%
7075-T6 (Kev daws teeb meem Thaum tshav kub kub kho & Artificially Aged)
Tsim los rauua kom muaj zog, no temper yog dav siv nyob rau hauv structural daim ntaub ntawv.
Tensile zog: ~ 510-538 MPa
Tawm Zog: ~ 434-476 MPa
Elongation: 5-8%
7075 -T651 (Stress-Relieved T6)
Raws li T6 tab sisstretched los txo cov kev ntxhov siab sab hauv, txhim kho qhov ntev stability.
Tensile zog: ~ 462-538 MPa
Tawm Zog: ~ 372-462 MPa
Elongation: 3-9%
7075-T73 (Hnub nyoog dhau los rau Corrosion Resistance)
Ib qho kev laus tshaj - laus uas txi qee lub zog kom ua tiavsuperior SCC kuj.
Tensile zog: ~ 505 MPa
Tawm Zog: ~ 435 MPa
Elongation: ~ 13%
7075-T7351
Ib qho kev txhim kho ntawm T73 nrog kev ntxhov siab los ntawm kev ncab, muabzoo heev corrosion kuj thiab stability, tshwj xeeb tshaj yog rau aerospace daim hlau.
7075-T76 / T7651
High -kub aging tempers yog tsim los sib npauglub zog, exfoliation corrosion kuj, thiab SCC kuj. T7651 muaj xws li kev ntxhov siab ntxiv rau kev txhim kho flatness.
Tshwj xeeb Tempers: T73510 / T73511 / T76510 / T76511
Cov tempers no muab optimized corrosion kuj thiab dimensional precision, nrog variations nyob rau hauv straightening txheej txheem kom haum phaj thiab extrusion daim ntaub ntawv.
Tshuaj muaj pes tsawg leeg ntawm 7075 Aluminium Alloy
7075 txhuas yog feem ntau ntxiv dag zog los ntawm zinc, ua ke nrog magnesium thiab tooj liab.
| Element | Cov ntsiab lus (%) |
|---|---|
| Zinc (Zn) | 5.1 – 6.1 |
| Magnesium (Mg) | 2.1 – 2.9 |
| Copper (Cu) | 1.2 – 2.0 |
| Chromium (Cr) | 0.18 – 0.28 |
| Hlau (Fe) | Tsawg dua los yog sib npaug li 0.50 |
| Silicon (Si) | Tsawg dua lossis sib npaug li 0.40 |
| Manganese (Mn) | Tsawg dua los yog sib npaug li 0.30 |
| Titanium (Ti) | Tsawg dua los yog sib npaug li 0.20 |
| Lwm yam impurities | Tsawg dua los yog sib npaug li 0.05 |
| Tag nrho impurities | Tsawg dua los yog sib npaug li 0.15 |
| Aluminium (Al) | Tshuav |
Qhov no muaj pes tsawg leeg muab 7075 txhuas nwsTshwj xeeb hardness, qaug zog tsis kam, thiab cov qauv kev ncaj ncees, ua rau nws zoo tagnrho rau aerospace thiab kev siv tub rog.
Lub cev muaj zog ntawm 7075 Aluminium
| Khoom | Tus nqi |
|---|---|
| Qhov ntom | 2.81 g / cm³ |
| Elastic Modulus | 71.7 gvp |
| Shear Modulus | 26.2–26.9 IB |
| Poisson tus ratio | 0.32 |
| Thermal conductivity | 130–173 W/m·K |
| Hluav taws xob conductivity | ~ 33% IAB |
| Tshwj xeeb kub muaj peev xwm | 0.96 J / g· degree |
| Melting Point | 477-638 degree |
Mechanical Properties (Tswj)
| Kub | Tensile zog (ksi) | Yield zog (ksi) | Fatigue Strength (ksi) | Elongation (%) |
|---|---|---|---|---|
| 7075-O | Tsawg dua los yog sib npaug li 40 | Tsawg dua los yog sib npaug li 21 | 18 | Ntau tshaj los yog sib npaug rau 10 |
| 7075-T6 | 83 | 73 | 23 | 11 |
| 7075-T651 | 80 | 67 | 23 | 8.2 |
| 7075-T73 | 72.2 | 63.1 | 20.8 | 7.1 |
| 7075-T7351 | 73.2 | 63.1 | 21.8 | 7.5 |
Machinability ntawm 7075 Aluminium
7075 aluminium alloy yog ntsuas"B" los ntawm Aluminium Association, qhiazoo heev machinability.
O temper:Yooj yim rau tshuab thiab daim ntawv, haum rau cov duab complex ua ntej kev kho cua sov
T6 / T651:High hardness xyuas kom meej tab sis nce cov cuab yeej hnav
T73 / T76:Me ntsis txo lub zog nrog txhim kho machinability thiab corrosion kuj
Qhov no ua rau 7075 zoo tagnrho rausiab - precision CNC machining, aerospace Cheebtsam, thiab cov cuab yeej siv.
Weldability Considerations
7075 aluminium muajWeldability tsis zoothiab ua rau kub tawg thiab lub zog degradation nyob rau hauv tshav kub- cuam tshuam cheeb tsam.
Kev vuam tsis pom zoo tsis pom zoo
Thaum muaj xwm ceev TIG vuam siv tau 5356 muab tub lim nrog preheating (~ 150 degree)
Mechanical fastening (riveting, bolting)feem ntau yog nyiam kom muaj kev ncaj ncees ntawm cov qauv
Formability ntawm 7075 Aluminium
Ntawm chav tsev kub, 7075 nthuav tawmtsawg formabilityvim siab zog thiab txwv ductility.
O temper:Zoo tshaj plaws rau kev sib sau txias, khoov, stamping, thiab kos duab sib sib zog nqus
T6 / T73:Feem ntau yuav tsum tau kub sib sau (300-400 degree), xws li tuag forging
Common kev lag luam xyaum:Daim ntawv hauv O temper → tshav kub kho thiab hnub nyoogrov qab muaj zog
Txoj hauv kev no yog siv dav hauv aerospace roj tso tsheb hlau luam thiab cov qauv txheej txheem nyuaj.
Corrosion Resistance thiab Kev Tiv Thaiv
Thaum 7075 txhuas excels zog, nws yogtsawg corrosion-resistantdua li ntau lwm yam txhuas alloys, tshwj xeeb tshaj yog nyob rau hauv cov av noo los yog chloride- nplua nuj ib puag ncig.
Lub xub ntiag ntawm tooj liab nce lub zog tab sis kuj nce siab rau SCC.
Txhawm rau txhim kho durability:
SivT73 los yog T76 tempers
Thovnyuaj anodizing (20-25 μm)
Sivntshiab aluminium cladding (Alclad)rau aerospace thiab qis -kev pabcuam kub
Vim li cas thiaj xaiv GNEE rau 7075 Aluminium Alloy?
NrogCov khoom lag luam loj, kev ua haujlwm siab heev, thiab kev tswj xyuas nruj, GNEE muab kev txhim khu kev qha 7075 txhuas cov kev daws teeb meem raws li koj qhov kev thov.
Txawm hais tias koj xav tau siab - lub zog aerospace daim hlau, cov khoom muaj tseeb, lossis corrosion- ua kom zoo tshaj plaws, peb pab neeg ua haujlwm tau npaj los txhawb koj qhov project.
Hu rau GNEE hnub no rau cov kws tshaj lij kev taw qhia thiab cov lus ceev ceev ntawm 7075 aluminium alloy khoom.
