7 series aluminium alloy yi-Al-Zn-Mg-Cu, Ingxubevange isetshenziswe embonini yokukhiqiza izindiza kusukela ngasekupheleni kwawo-1940. I7075 aluminium ingxubevangeinesakhiwo esiqinile kanye nokumelana nokugqwala okuqinile, okungcono kakhulu kwezindiza kanye namapuleti aseMarine.Ukumelana nokugqwala okujwayelekile, izakhiwo ezinhle zemishini kanye nokusabela kwe-anode.

Izinhlamvu ezinhle zenza ukusebenza kangcono kokumba okujulile nokumelana nokuguga okuthuthukisiwe. Amandla angcono kakhulu e-aluminium alloy yingxubevange engu-7075, kodwa ayikwazi ukushiselwa, futhi ukumelana nokugqwala kwayo kubi kakhulu, izingxenye eziningi zokukhiqiza ze-CNC zisebenzisa ingxubevange engu-7075. I-Zinc iyingxenye eyinhloko yengxubevange kulolu chungechunge, kanye nengxubevange encane ye-magnesium ingenza izinto zelashwe ngokushisa, zifinyelele izici zamandla eziphakeme kakhulu.

Lolu chungechunge lwezinto zokwakha ngokuvamile zengezwe enanini elincane lethusi, i-chromium namanye ama-alloys, futhi phakathi kwawo inombolo engu-7075 aluminium alloy ikakhulukazi izinga eliphezulu, amandla aphezulu, afanele uhlaka lwendiza namandla aphezulu izesekeli. ukuthambekela kokuqhekeka kwe-corrosion; i-aluminiyamu eboshwe noma enye imithi yokuzivikela. Ukuguga kabili kungathuthukisa ukumelana ne-alloy stress corrosion cracking. I-plasticity esimweni esifakiwe futhi esisanda kucinywa iphansi kancane kunesimo esifanayo se-2A12. ngcono kancane kune-7A04, ukukhathala okumile kwepuleti. I-Gtch iyazwela, ukugqwala kwengcindezi kungcono kuno-7A04. ukuminyana ngu-2.85 g/cm3.

7075 aluminium ingxubevangeinezakhiwo ezinhle kakhulu zemishini, ukusebenza okuqondile kulezi zici ezilandelayo:

1. Amandla aphezulu: Amandla aqinile we-7075 aluminium alloy angafinyelela ngaphezu kwe-560MPa, okuyingxenye yamandla aphezulu we-aluminium alloy, okuyizikhathi ezingu-2-3 kwamanye ama-alloys e-aluminium ngaphansi kwezimo ezifanayo.

2. Ukuqina okuhle: Izinga lokushwabana kwesigaba kanye nezinga lokwelulwa kwe-7075 ingxubevange ye-aluminium liphezulu uma kuqhathaniswa, futhi imodi yokuphuka iwukuqina kokuqina, okulungele kangcono ukucubungula nokwenza.

3. Ukusebenza kahle kokukhathala: I-7075 Aluminium alloy isengakwazi ukulondoloza izakhiwo zayo ezinhle zemishini ngaphansi kokucindezeleka okukhulu nomthwalo ophindaphindayo ophindaphindayo, ngaphandle kwe-oxidation, i-crack nezinye izenzakalo.

4. iphumelela kakhulu ekugcineni ukushisa:7075 Aluminium ingxubevangeisengakwazi ukugcina izakhiwo zayo ezinhle zemishini endaweni yokushisa ephezulu, okuwuhlobo lwe-aluminium alloy ukumelana nokushisa okuphezulu.

5. Ukumelana nokugqwala okuhle: I-7075 Aluminium alloy inokumelana nokugqwala okuhle futhi ingasetshenziswa ekwenzeni izingxenye ezinezidingo eziphakeme zokumelana nokugqwala.

Isimo:

1.O-state: (isimo esifakiwe)

Indlela yokusebenzisa: Shisisa ingxubevange ye-7075 aluminium ezingeni lokushisa elifanele, imvamisa ku-350-400 degrees Celsius, gcina isikhathi esithile bese upholisa kancane izinga lokushisa elilingana negumbi, inhloso: ukuqeda ukucindezeleka kwangaphakathi nokuthuthukisa ipulasitiki nokuqina kwento. Amandla amakhulu okudonsa angu-7075 (7075-0 kushisa) futhi angeke adlule u-28,00000000000000 we-MPsi isivuno amandla 140 MPa (21,000 psi). Ukwelulwa kwezinto (ukwelula ngaphambi kokwehluleka kokugcina) kungu-9-10%.

2.T6 (ukwelashwa kokuguga):

Indlela yokusebenzisa: isixazululo sokuqala esiqinile sokwelapha ukushisa kwe-alloy kuya ku-475-490 degrees Celsius kanye nokupholisa ngokushesha bese ukwelashwa kokuguga, ngokuvamile ku-120-150 degrees Celsius ukwahlukanisa amahora amaningana, inhloso: ukuthuthukisa amandla nobulukhuni bezinto ezibonakalayo. Amandla okugcina we-T6 tempering 7075 yi-510,540,00000000000000000000000000000000000 we into (7075 MPald) okungenani 430,480 MPa (63,00069,000 psi). Inezinga lokunweba lokuhluleka elingu-5-11%.

3.T651 (ukwelula + ukuguga ukuqina):

Indlela yokusebenzisa: ngesisekelo se-T6 ukuguga ukuqina, ingxenye ethile yokwelula ukuze kuqedwe ukucindezeleka okusele, inhloso: ukugcina amandla aphezulu nobulukhuni ngenkathi kuthuthukiswa i-plasticity nokuqina.Amandla okugcina we-tensile we-T651 tempering 7075 angama-570 MPa (83,000 psi) kanye namandla okukhiqiza,0000000000000000000 (psi3). Inezinga lokwelula lokuhluleka lika-3 - 9%. Lezi zimfanelo zingashintshwa kuye ngohlobo lwento esetshenzisiwe. Amapuleti aminyene angase abonise amandla aphansi nobude kunezinombolo ezibalwe ngenhla.

Ukusetshenziswa okuyinhloko kwe-7075 aluminium alloy:

I-1.Inkundla ye-Aerospace: I-7075 aluminium alloy isetshenziswa kabanzi emkhakheni we-aerospace ngenxa yamandla ayo aphezulu nezici ezingasindi. Kuvame ukusetshenziselwa ukwakhiwa kwezakhiwo zezindiza, amaphiko, ama-bulkheads nezinye izingxenye ezibalulekile, kanye nezinye izakhiwo ezidinga amandla aphezulu kanye nokumelana nokugqwala.

2. Imboni yezimoto: I-7075 aluminium alloy nayo idlala indima ebalulekile ekwakhiweni kwezimoto. Ivame ukusetshenziswa ohlelweni lokubhuleka kanye nezingxenye ze-chassis zezimoto ezisebenza kahle nezimoto zomjaho, ukuze kuthuthukiswe ukusebenza kwezimoto nokunciphisa isisindo.

3. Imishini yokuvivinya umzimba: Ngenxa yamandla ayo aphezulu kanye nezici ezingasindi, ingxubevange ye-aluminium engu-7075 ivame ukusetshenziselwa ukwenza izinto zezemidlalo, njengezinduku zokuhamba, amakilabhu egalofu, njll.

4. Ukwakhiwa komshini: Emkhakheni wokukhiqiza imishini, i-7075 aluminium alloy nayo isetshenziswa kabanzi ekwenzeni izingxenye eziqondile, isikhunta nokunye. Ngaphezu kwalokho, i-7075 aluminium alloy nayo isetshenziswa kabanzi ekuvutheleni isikhunta sepulasitiki (ibhodlela), isikhunta seplastiki se-ultrasonic, isikhunta sezicathulo, isikhunta sepulasitiki sephepha, isikhunta esakha igwebu, isikhunta se-wax, imodeli, ukulungiswa, imishini yemishini, ukucubungula isikhunta kanye neminye imikhakha. Iphinde isetshenziselwe ukwenza amafreyimu ebhayisikili e-aluminium alloy aphezulu.

Kumele kuqashelwe ukuthi nakuba i-7075 aluminium ingxubevangekunezinzuzo eziningi, kusadingeka ukuthi unake ukusebenza kwayo okungalungile kwe-welding kanye nokuthambekela kokuqhekeka kokugqwala kwengcindezi, ngakho-ke ukugqoka kwe-aluminium noma okunye ukwelashwa kokuvikela kungadingeka ekusetshenzisweni.

Ngokuvamile, ingxubevange ye-7075 aluminium inesikhundla esibalulekile emikhakheni eminingi yezimboni ngenxa yokusebenza kwayo okuhle kakhulu nokusebenza okubanzi.