7 series aluminium alloy yog Al-Zn-Mg-Cu, Cov hlau tau siv rau hauv kev lag luam dav hlau tsim txij li xyoo 1940s. Cov7075 txhuas alloymuaj cov qauv nruj thiab muaj zog corrosion kuj, uas yog qhov zoo tshaj plaws rau aviation thiab Marine daim hlau.Ordinary corrosion kuj, zoo mechanical zog thiab anode cov tshuaj tiv thaiv.

Cov nplej zoo ua kom zoo dua qhov kev sib sib zog nqus drilling thiab txhim kho hnav tsis kam. Qhov zoo tshaj plaws lub zog ntawm aluminium alloy yog 7075 alloy, tab sis nws tsis tuaj yeem welded, thiab nws cov corrosion kuj tsis zoo, ntau CNC txiav manufacturing qhov chaw siv 7075 alloy. Zinc yog cov ntsiab lus alloy tseem ceeb hauv cov koob no, ntxiv rau me ntsis magnesium alloy tuaj yeem ua rau cov khoom siv los kho cua sov, kom ncav cuag cov yam ntxwv muaj zog heev.

Cov ntaub ntawv no feem ntau yog ntxiv rau me me ntawm tooj liab, chromium thiab lwm yam alloys, thiab ntawm cov tooj 7075 aluminium alloy yog tshwj xeeb tshaj yog cov zoo tshaj plaws, lub zog siab tshaj plaws, haum rau aircraft ncej thiab siab zog accessories.Nws cov yam ntxwv yog, zoo plasticity tom qab cov khoom siv kho mob, kev kho cua sov qhov cuab lub zog yog qhov zoo tshwj xeeb, muaj lub zog siab hauv qab 150 ℃, thiab muaj qhov tshwj xeeb zoo ntawm qhov kub thiab txias; kev nyuaj siab corrosion cracking nyiam; coated aluminium los yog lwm yam kev tiv thaiv kev kho mob. Ob chav aging tuaj yeem txhim kho qhov tsis kam ntawm alloy kev nyuaj siab corrosion cracking. Lub plasticity nyob rau hauv lub annealed thiab quenched lub xeev yog me ntsis qis dua tib lub xeev ntawm 2A12. me ntsis zoo dua 7A04, phaj zoo li qub qaug zog. Gtch yog rhiab heev, kev ntxhov siab corrosion zoo dua 7A04. Qhov ceev yog 2.85 g / cm3.

7075 aluminium alloy muaj cov khoom siv zoo heev, kev ua haujlwm tshwj xeeb hauv cov hauv qab no:

1. lub zog siab: Lub zog tensile ntawm 7075 aluminium alloy tuaj yeem ncav cuag ntau dua 560MPa, uas yog cov khoom siv zog siab ntawm aluminium alloy, uas yog 2-3 npaug ntawm lwm cov txhuas alloys nyob rau hauv tib lub sijhawm.

2. Zoo toughness: Cov seem shrinkage tus nqi thiab elongation tus nqi ntawm 7075 aluminium alloy yog qhov siab, thiab hom tawg yog toughness tawg, uas yog tsim nyog rau kev ua thiab kev sib sau.

3. Kev ua tau zoo qaug zog: 7075 Aluminium alloy tseem tuaj yeem tuav nws cov khoom siv kho tshuab zoo nyob rau hauv kev ntxhov siab thiab nquag reciprocating load, tsis muaj oxidation, tawg thiab lwm yam tshwm sim.

4. Kev txuag hluav taws xob zoo heev:7075 Aluminium alloytseem tuaj yeem tswj hwm nws cov khoom siv kho tshuab zoo hauv qhov kub thiab txias, uas yog ib hom kub resistant aluminium alloy.

5. Zoo corrosion kuj: 7075 Txhuas alloy muaj corrosion kuj zoo thiab tuaj yeem siv rau hauv kev tsim cov khoom uas muaj kev tiv thaiv corrosion siab.

Qhov xwm txheej:

1.O-state: (lub xeev annealed)

Txoj kev siv: Ua kom sov 7075 aluminium alloy rau qhov kub thiab txias, feem ntau ntawm 350-400 degrees Celsius, khaws cia rau lub sijhawm thiab tom qab ntawd maj mam txias rau chav sov, lub hom phiaj: txhawm rau tshem tawm kev ntxhov siab sab hauv thiab txhim kho cov plasticity thiab toughness. Cov khoom siv.Qhov siab tshaj plaws tensile lub zog ntawm 7075 (7075-0 tempering) yuav tsum tsis pub tshaj 280 MPa (40,000 psi) thiab lub siab tshaj plaws yield zog ntawm 140 MPa (21,000 psi). Lub elongation ntawm cov khoom (stretching ua ntej qhov kawg tsis ua hauj lwm) yog 9-10%.

2.T6 (kev kho kev laus):

Txoj kev siv: thawj cov khoom siv kho mob yog cov cua kub cua sov rau 475-490 degrees Celsius thiab txias txias thiab tom qab ntawd kev laus kho, feem ntau ntawm 120-150 degrees Celsius rwb thaiv tsev rau ob peb teev, lub hom phiaj: txhawm rau txhim kho lub zog thiab hardness ntawm cov khoom. .Qhov kawg tensile lub zog ntawm T6 tempering 7075 yog 510,540 MPa (74,00078,000 psi) nrog lub zog tawm los ntawm tsawg kawg yog 430,480 MPa (63,00069,000 psi). Nws muaj qhov tsis ua haujlwm txuas ntxiv ntawm 5-11%.

3.T651 (stretching + laus hardening):

Txoj kev siv: raws li T6 aging hardening, ib qho kev faib ua feem ntawm stretching kom tshem tawm cov residual kev nyuaj siab, lub hom phiaj: kom muaj zog thiab hardness thaum txhim kho plasticity thiab toughness.Qhov kawg tensile lub zog ntawm T651 tempering 7075 yog 570 MPa (83,000 psi) thiab lub zog tawm ntawm 500 MPa (73,000 psi). Nws muaj qhov tsis ua haujlwm elongation ntawm 3 - 9%. Cov cwj pwm no tuaj yeem hloov pauv nyob ntawm daim ntawv ntawm cov khoom siv. Cov phaj tuab tuaj yeem pom muaj zog thiab elongation qis dua li cov lej teev saum toj no.

Kev siv tseem ceeb ntawm 7075 aluminium alloy:

1.Aerospace teb: 7075 aluminium alloy yog dav siv nyob rau hauv lub tshav pob ntawm aerospace vim nws lub zog siab thiab lub teeb yuag. Nws yog feem ntau siv rau hauv kev tsim cov qauv dav hlau, tis, bulkheads thiab lwm yam tseem ceeb, nrog rau lwm cov qauv uas yuav tsum tau muaj zog thiab corrosion kuj.

2. automotive kev lag luam: Lub 7075 aluminium alloy kuj plays lub luag haujlwm tseem ceeb hauv kev tsim tsheb. Nws yog feem ntau siv rau hauv lub braking system thiab chassis qhov chaw ntawm cov tsheb ua haujlwm siab thiab cov tsheb sib tw, txhawm rau txhim kho kev ua haujlwm ntawm tsheb thiab txo qhov hnyav.

3. Cov khoom siv qoj ib ce: Vim nws lub zog siab thiab lub teeb yuag, 7075 aluminium alloy feem ntau yog siv los ua cov khoom ua si, xws li hiking sticks, golf clubs, thiab lwm yam.

4. tshuab tsev: Hauv kev lag luam ntawm kev tsim khoom, 7075 aluminium alloy kuj tau siv dav hauv kev tsim cov khoom precision, pwm thiab lwm yam. Tsis tas li ntawd, 7075 aluminium alloy kuj tau siv dav hauv tshuab yas (lub raj mis) pwm, ultrasonic yas vuam pwm, khau pwm, ntawv yas pwm, ua npuas ncauj pwm, siv quav ciab pwm, qauv, fixture, khoom siv kho tshuab, pwm ua thiab lwm yam. Nws kuj yog siv los ua high-end aluminium alloy tsheb kauj vab ncej.

Nws yuav tsum tau muab sau tseg tias txawm lub7075 txhuas alloymuaj ntau yam zoo, nws tseem yuav tsum tau ua tib zoo saib xyuas nws cov kev ua haujlwm tsis zoo thiab qhov kev xav ntawm kev ntxhov siab corrosion tawg, yog li cov txheej txheem txhuas lossis lwm yam kev tiv thaiv yuav tsum tau siv hauv kev siv.

Feem ntau, 7075 aluminium alloy muaj txoj haujlwm tseem ceeb hauv ntau qhov chaw lag luam vim nws qhov kev ua tau zoo heev thiab siv dav.