7 series aluminium alloy ke Al-Zn-Mg-Cu, Alloy e 'nile ea sebelisoa indastering ea ho etsa lifofane ho tloha bofelong ba lilemo tsa bo-1940. The7075 aluminium motsoakoe na le sebopeho se thata le khanyetso e matla ea kutu, e leng eona e ntle ka ho fetisisa bakeng sa lifofane le lipoleiti tsa Marine.Tloaeleho ea ho hanyetsa ho senyeha, thepa e ntle ea mochine le karabelo ea anode.

Litholoana tse ntle li etsa hore ho be le ts'ebetso e tebileng ea ho cheka le ho ntlafatsa ho hanyetsa ho apara. Matla a matle ka ho fetisisa a alloy ea aluminium ke alloy ea 7075, empa ha e khone ho chesetsoa, ​​​​'me ho hanyetsa ha eona ho fokola haholo, likarolo tse ngata tsa tlhahiso ea CNC li sebelisa motsoako oa 7075. Zinc ke karolo ea mantlha ea alloy letotong lena, hammoho le alloy e nyane ea magnesium e ka etsa hore thepa e khone ho phekoloa ka mocheso, ho fihlela litšobotsi tse matla haholo.

Letoto lena la lisebelisoa ka kakaretso le eketsoa ho palo e nyane ea koporo, chromium le li-alloys tse ling, 'me har'a tsona palo ea 7075 aluminium alloy ke boleng bo phahameng ka ho fetisisa, matla a phahameng ka ho fetisisa, a loketseng foreimi ea sefofane le lisebelisoa tse matla tse phahameng. polasetiki e ntle ka mor'a kalafo e tiileng ea tharollo, phello ea matlafatso ea kalafo ea mocheso e ntle haholo, e na le matla a phahameng ka tlase ho 150 ℃, 'me e na le matla a khethehileng a mocheso o tlase; Ts'ebetso e mpe ea welding; khatello ea kelello kutu cracking tšekamelo; aluminium e koahetsoeng kapa phekolo e 'ngoe e sireletsang. Ho tsofala habeli ho ka ntlafatsa ho hanyetsa ha alloy stress corrosion cracking. Plastiki sebakeng se koetsoeng le se sa tsoa tima se tlase hanyane ho feta boemo bo ts'oanang ba 2A12. hanyenyane ho feta 7A04, mokhathala o tsitsitseng oa poleiti. Gtch e na le kutloelo-bohloko, kutu ea khatello ea maikutlo e betere ho feta 7A04. boima ba 'mele ke 2.85 g/cm3.

7075 aluminium alloy e na le thepa e ntle ea mochini, ts'ebetso e ikhethang likarolong tse latelang:

1. matla a phahameng: Matla a matla a 7075 a aluminium alloy a ka fihla ho feta 560MPa, e leng ea thepa e matla ea matla a aluminium alloy, e leng makhetlo a 2-3 a lisebelisoa tse ling tsa aluminium tlas'a maemo a tšoanang.

2. Matla a matle: Sekhahla sa ho fokotseha ha karolo le sekhahla sa elongation ea 7075 aluminium alloy e batla e phahame, 'me mokhoa oa ho robeha ke ho robeha ho thata, e leng ho loketseng haholoanyane bakeng sa ho sebetsa le ho theha.

3. Ts'ebetso e ntle ea mokhathala: 7075 Aluminium alloy e ntse e ka boloka thepa ea eona e ntle ea mochine tlas'a khatello e matla le mojaro o pheta-phetoang khafetsa, ntle le oxidation, crack le liketsahalo tse ling.

4. e sebetsa hantle haholo ho baballeng mocheso:7075 Aluminium motsoakoe ntse e ka boloka thepa ea eona e ntle ea mochini tikolohong ea mocheso o phahameng, e leng mofuta oa motsoako oa aluminium o hanyetsanang le mocheso o phahameng.

5. Ho hanyetsa hantle ha kutu: 7075 Aluminium alloy e na le khanyetso e ntle ea kutu 'me e ka sebelisoa ha ho etsoa likarolo tse nang le litlhoko tse phahameng tsa ho hanyetsa kutu.

Boemo:

1.O-state: (boemo bo kenyelelitsoeng)

Mokhoa oa ts'ebetsong: Chesa motsoako oa 7075 aluminium mocheso o loketseng, hangata e le likhato tse 350-400 tsa Celsius, boloka nako e itseng ebe o pholile butle ho mocheso oa kamore, morero: ho felisa khatello ea kelello le ho ntlafatsa polasetiki le ho tiea ha mocheso. lintho tse bonahalang.Matla a phahameng a tensile a 7075 (7075-0 tempering) ha a na ho feta 280 MPa (40,000 psi) le boholo. matla a tlhahiso ea 140 MPa (21,000 psi). Elongation ea thepa (ho otlolla pele ho hloleha ho qetela) ke 9-10%.

2.T6 (phekolo ea botsofali):

Mokhoa oa ho kenya ts'ebetsong: phekolo ea pele e tiileng ea tharollo ke mocheso oa motsoako ho 475-490 likhato tsa Celsius le ho pholile ka potlako 'me joale phekolo ea botsofali, hangata ka likhato tse 120-150 tsa Celsius ka lihora tse' maloa, morero: ho ntlafatsa matla le ho thatafala ha lintho tse bonahalang. .Matla a ho qetela a T6 tempering 7075 ke 510,540 MPa (74,00078,000 psi) ka matla a tlhahiso. bonyane ba 430,480 MPa (63,00069,000 psi). E na le sekhahla sa katoloso ea ho hloleha ho 5-11%.

3.T651 (ho otlolla + ho thatafatsa botsofali):

Mokhoa oa ho kenya ts'ebetsong: motheong oa T6 botsofali bo thata, karolo e itseng ea ho otlolla ho felisa khatello ea kelello e setseng, morero: ho boloka matla a phahameng le boima ha u ntse u ntlafatsa polasetiki le ho thatafala.Matla a ho qetela a T651 tempering 7075 ke a 570 MPa (83,000) psi) le matla a tlhahiso ea 500 MPa (73,000 psi). E na le sekhahla sa ho hloleha ho holisa 3 - 9%. Litšobotsi tsena li ka fetoloa ho latela mofuta oa thepa e sebelisoang. Lipoleiti tse teteaneng li ka bonts'a matla le bolelele bo tlase ho feta linomoro tse thathamisitsoeng ka holimo.

Tšebeliso ea mantlha ea 7075 aluminium alloy:

1.Sebaka sa sefofane: 7075 aluminium alloy e sebelisoa haholo tšimong ea sebaka sa sefofane ka lebaka la matla a eona a phahameng le litšobotsi tse bobebe. Hangata e sebelisoa ha ho etsoa mehaho ea lifofane, mapheo, li-bulkheads le likarolo tse ling tsa bohlokoa, hammoho le mehaho e meng e hlokang matla a phahameng le ho hanyetsa kutu.

2. Indasteri ea likoloi: The 7075 aluminium alloy e boetse e phetha karolo ea bohlokoa tlhahisong ea likoloi. Hangata e sebelisoa tsamaisong ea braking le likarolo tsa chassis tsa likoloi tse sebetsang hantle le likoloi tsa mabelo, e le ho ntlafatsa ts'ebetso ea likoloi le ho fokotsa boima ba 'mele.

3. lisebelisoa tsa boikoetliso: Ka lebaka la matla a eona a phahameng le litšoaneleho tse bobebe, alloy 7075 aluminium alloy hangata e sebelisoa ho etsa lisebelisoa tsa lipapali, joalo ka lithupa tsa ho hloa mekoalaba, lihlopha tsa kolofo, jj.

4. mohaho oa mochine: Lefapheng la tlhahiso ea mechine, 7075 alloy aluminium alloy e boetse e sebelisoa haholo ha ho etsoa likarolo tse nepahetseng, hlobo le joalo-joalo. Ntle le moo, 7075 aluminium alloy e boetse e sebelisoa haholo ho foka polasetiki (botlolo) hlobo, hlobo ea ultrasonic welding, hlobo ea seeta, hlobo ea polasetiki ea pampiri, foam e etsang hlobo, boka ba boka, mohlala, lisebelisoa, lisebelisoa tsa mochini, ts'ebetso ea hlobo le masimo a mang. E boetse e sebelisoa ho etsa liforeimi tsa libaesekele tsa aluminium tsa boleng bo holimo.

Ho lokela ho hlokomeloa hore le hoja ho7075 aluminium motsoakoe na le melemo e mengata, ho ntse ho hlokahala ho ela hloko ts'ebetso ea eona e mpe ea tjheseletsa le tšekamelo ea ho phatloha ha khatello ea maikutlo, ka hona ho ka hlokahala ho roala aluminium kapa kalafo e 'ngoe ea ts'ireletso ha e sebelisoa.

Ka kakaretso, motsoako oa 7075 oa aluminium o na le maemo a bohlokoa haholo makaleng a mangata a indasteri ka lebaka la ts'ebetso ea ona e ntle haholo le ts'ebeliso e pharaletseng.