I-7 series aluminium alloy yi-Al-Zn-Mg-Cu, I-alloy isetyenziswe kwishishini lokuvelisa i-aircraft ukususela ekupheleni kwe-1940s. I7075 aluminium ingxubevangeinesakhiwo esiqinileyo kunye nokuxhathisa okuqinileyo kwe-corrosion, eyona nto ingcono kakhulu kwi-aviation kunye neepleyiti zaseLwandle.I-ordinary corrosion resistance, iimpawu ezilungileyo zoomatshini kunye ne-anode reaction.

Iinkozo ezicolekileyo zenza ngcono ukusebenza kokomba okunzulu kunye nokwandiswa kokumelana nokunxiba. Awona mandla angcono e-aluminium alloy yi-7075 alloy, kodwa ayinakudityaniswa, kwaye ukumelana nokubola kwayo kumbi kakhulu, uninzi lwe-CNC yokusika iindawo zokwenziwa zisebenzisa i-7075 alloy. I-Zinc yeyona nto iphambili yealloyi kolu luhlu, kunye ne-alloy encinci ye-magnesium inokwenza ukuba izinto ziphathwe ubushushu, zifikelele kwiimpawu zamandla aphezulu kakhulu.

Olu chungechunge lwezixhobo zongezwa ngokubanzi kumlinganiselo omncinci wobhedu, i-chromium kunye nezinye i-alloys, kwaye phakathi kwazo inani le-7075 i-aluminium alloy ngokukodwa umgangatho ophezulu, amandla aphezulu, afanelekileyo kwisakhelo senqwelomoya kunye nezixhobo eziphezulu zamandla. iplastiki elungileyo emva konyango lwesisombululo esiluqilima, isiphumo sokuqinisa unyango lobushushu lulungile kakhulu, lunamandla aphezulu angaphantsi kwe-150 ℃, kwaye lunamandla obushushu asezantsi kakhulu; ukuthambekela kokuqhekeka koxinzelelo lwe-corrosion; i-aluminiyam egqunyiweyo okanye olunye unyango olukhuselayo. Ukuguga kabini kunokuphucula ukuxhathisa kwe-alloy stress corrosion cracking. Iplastiki kwimeko edibeneyo kunye neyokucinywa nje ingaphantsi kancinci kunesimo esifanayo se-2A12. ngcono kancinci kune-7A04, ukudinwa kweplate static. I-Gtch inobuntununtunu, i-corrosion yoxinzelelo ingcono kune-7A04. ukuxinana yi-2.85 g/cm3.

I-7075 ialluminiyam ialloy ineepropathi ezigqwesileyo zoomatshini, intsebenzo ethile kule miba ilandelayo:

1. Amandla aphezulu: Amandla e-tensile ye-7075 ye-aluminium alloy inokufikelela ngaphezu kwe-560MPa, eyeyamandla aphezulu e-aluminium alloy, eyi-2-3 amaxesha enye i-alloys ye-aluminium phantsi kweemeko ezifanayo.

2. Ukuqina okulungileyo: Inqanaba lokunciphisa icandelo kunye nesantya se-elongation ye-7075 i-aluminium alloy iphezulu kakhulu, kwaye imo ye-fracture yi-toughness fracture, eyona nto ifaneleke ngakumbi ukucubungula kunye nokwenza.

3. Ukusebenza kakuhle kokukhathala: I-7075 Aluminiyam i-alloy isengakwazi ukugcina iimpawu zayo ezintle zoomatshini phantsi koxinzelelo oluphezulu kunye nomthwalo wokuphindaphinda rhoqo, ngaphandle kwe-oxidation, i-crack kunye nezinye izinto.

4. ngokugqwesileyo ekugcineni ubushushu:7075 Aluminiyam ingxubevangeisenakho ukugcina iipropathi zayo ezilungileyo zoomatshini kwindawo yobushushu obuphezulu, luhlobo lobushushu obuphezulu obuxhathisa ingxubevange ye-aluminium.

5. Ukumelana ne-corrosion efanelekileyo: I-7075 i-aluminium alloy ine-corrosion resistance resistance kwaye ingasetyenziselwa ukuveliswa kweengxenye ezineemfuno eziphezulu zokuxhathisa i-corrosion.

Umqathango:

1.O-state: (imeko efakiweyo)

Indlela yokuphumeza: Fudumeza i-7075 aluminium ialloy kwiqondo lobushushu elifanelekileyo, elihlala lingama-350-400 degrees Celsius, gcina ixesha elithile kwaye emva koko uphole ngokucothayo kwiqondo lobushushu begumbi, injongo: ukuphelisa uxinzelelo lwangaphakathi kunye nokuphucula iplastiki kunye nokuqina kwe. Amandla e-tensile aphezulu 7075 (7075-0 tempering) akayi kudlula i-280 MPa (40,000 psi) kunye nobuninzi. amandla isivuno 140 MPa (21,000 psi). Ukwandiswa kwezinto eziphathekayo (ukwelula ngaphambi kokungaphumeleli kokugqibela) ngu-9-10%.

2.T6 (unyango lokuguga):

Indlela yokuphunyezwa: unyango lokuqala oluqinileyo isisombululo yi-alloy yokufudumeza ukuya kuma-475-490 degrees Celsius kunye nokupholisa ngokukhawuleza kwaye emva koko unyango lokwaluphala, ngokuqhelekileyo kwi-120-150 degrees Celsius ukwahlukanisa iiyure eziliqela, injongo: ukuphucula amandla kunye nobulukhuni bezinto. .Owona mandla okugqibela we-T6 tempering 7075 yi-510,540 MPa (74,00078,000 psi) kunye namandla esivuno. ubuncinane 430,480 MPa (63,00069,000 psi). Inomlinganiselo wokwandiswa kokungaphumeleli kwe-5-11%.

3.T651 (ukolula + ukuguga ukuqina):

Indlela yokuphunyezwa: ngesiseko se-T6 ukuguga ukuqina, umlinganiselo othile wokolula ukuphelisa uxinzelelo olushiyekileyo, injongo: ukugcina amandla aphezulu kunye nobunzima ngelixa uphucula iplastiki kunye nokuqina.Amandla okugqibela e-T651 tempering 7075 yi-570 MPa (83,000) psi) kunye namandla esivuno se-500 MPa (73,000 psi). Inokusilela kwesantya sokwandiswa kwe-3 - 9%. Ezi mpawu zinokutshintshwa ngokuxhomekeke kuhlobo lwezinto ezisetyenzisiweyo. Iipleyiti ezityebileyo zinokubonisa amandla asezantsi kunye nobude kunala manani adweliswe ngasentla.

Ukusetyenziswa okuphambili kwe-7075 aluminium alloy:

I-1.Intsimi ye-Aerospace: I-7075 i-aluminium alloy isetyenziswa ngokubanzi kwintsimi ye-aerospace ngenxa yamandla ayo aphezulu kunye neempawu ezilula. Ihlala isetyenziselwa ukuveliswa kwezakhiwo zeenqwelo-moya, amaphiko, i-bulkheads kunye nezinye izinto eziphambili, kunye nezinye izakhiwo ezifuna amandla aphezulu kunye nokuxhathisa ukubola.

2. Ishishini leemoto: I-7075 ye-aluminium alloy nayo idlala indima ebalulekileyo kwimveliso yeemoto. Ihlala isetyenziselwa inkqubo ye-braking kunye neendawo ze-chassis zeemoto eziphezulu zokusebenza kunye neemoto zokugijima, ukwenzela ukuba kuphuculwe ukusebenza kwezithuthi kunye nokunciphisa ubunzima.

3. izixhobo zokuzilolonga: Ngenxa yamandla ayo aphezulu kunye neempawu ezilula, i-7075 aluminium alloy isoloko isetyenziselwa ukwenza izixhobo zemidlalo, ezifana neentonga zokuhamba, iiklabhu zegalufa, njl.

4. Ukwakhiwa komatshini: Kwintsimi yokwenziwa komatshini, i-7075 i-aluminium alloy iphinda isetyenziswe ngokubanzi ekwenzeni iindawo ezichanekileyo, ukubumba kunye nokunye. Ukongeza, i-7075 i-aluminium alloy isetyenziselwa ngokubanzi ukuvuthela iplastiki (ibhotile) isikhunta, i-ultrasonic i-plastic welding mold, i-mold mold, i-mold yeplastiki yephepha, i-foam eyenza i-foam, i-wax mold, imodeli, i-fixture, izixhobo zoomatshini, ukusetyenzwa kwe-mold kunye nezinye iindawo. Ikwasetyenziselwa ukwenza iifreyimu zebhayisikile ye-aluminium yealloyi ephezulu.

Kufuneka kuqatshelwe ukuba nangona i7075 aluminium ingxubevangeineenzuzo ezininzi, kusekho imfuneko yokunikela ingqalelo ekusebenzeni kwayo kakubi kwe-welding kunye nokuthambekela koxinzelelo lwe-corrosion cracking, ngoko ke i-aluminium yokwaleka okanye olunye unyango lokukhusela lunokufuneka lusetyenziswe.

Ngokubanzi, i-alloy ye-7075 ye-aluminiyam inesithuba esiyimfuneko kwiindawo ezininzi zemizi-mveliso ngenxa yokusebenza kwayo okugqwesileyo kunye nokusebenziseka okubanzi.