ʻO 7 series aluminum alloy ʻo Al-Zn-Mg-Cu, Ua hoʻohana ʻia ka alloy i ka ʻoihana hana mokulele mai ka hopena o 1940s. ʻO ka7075 alumini aluminihe paʻa paʻa a me ka pale ʻana i ka corrosion ikaika, ʻo ia ka mea maikaʻi loa no ka mokulele a me nā papa moana. ʻO ke kūpaʻa corrosion maʻamau, nā waiwai mechanical maikaʻi a me ka hopena anode.

ʻOi aku ka maikaʻi o ka hana wili hohonu a me ka hoʻoikaika ʻana i ka pale ʻana i ka ʻaʻahu. ʻO ka ikaika maikaʻi loa o ka alumini alumini ʻo ia ka 7075 alloy, akā ʻaʻole hiki ke welded, a ʻoi aku ka maikaʻi o kona pale ʻana i ka corrosion, nui nā ʻāpana hana ʻoki CNC e hoʻohana i ka alloy 7075. ʻO Zinc ka mea hao nui i loko o kēia pūʻulu, a me kahi huila magnesium liʻiliʻi hiki ke hiki i ka mea ke mālama i ka wela, a hiki i nā ʻano ikaika kiʻekiʻe loa.

Hoʻohui pinepine ʻia kēia ʻano o nā mea i kahi liʻiliʻi o ke keleawe, chromium a me nā mea hoʻohui ʻē aʻe, a ma waena o ka helu 7075 alumini alumini ʻoi aku ka maikaʻi loa, ka ikaika kiʻekiʻe, kūpono no ka mokulele mokulele a me nā mea ikaika kiʻekiʻe. ʻO ka plasticity maikaʻi ma hope o ka mālama ʻana i ka hopena paʻa, ʻoi aku ka maikaʻi o ka hoʻoikaika ʻana i ka wela wela, he ikaika kiʻekiʻe ma lalo o 150 ℃, a he ikaika haʻahaʻa haʻahaʻa maikaʻi loa; stress corrosion māwae māwae; alumini i uhi ʻia a i ʻole ka mālama pale ʻana. Hiki i ka ʻelemakule ʻelua ke hoʻomaikaʻi i ke kūʻē ʻana o ke koʻikoʻi koʻikoʻi corrosion cracking. ʻOi aku ka haʻahaʻa o ka plasticity i ka annealed a me ka hoʻopiʻi wale ʻana ma mua o ka mokuʻāina like o 2A12. ʻoi aku ka maikaʻi ma mua o 7A04, ka luhi static plate. ʻOi aku ka maikaʻi o Gtch ma mua o 7A04. ʻO ka mānoanoa he 2.85 g/cm3.

Loaʻa i ka 7075 alumini alumini nā waiwai mechanical maikaʻi loa, ka hana kikoʻī ma nā ʻano aʻe:

1. ikaika kiʻekiʻe: ʻO ka ikaika tensile o 7075 alumini alumini hiki ke piʻi aku ma mua o 560MPa, nona ka mea ikaika kiʻekiʻe o ka alumini alumini, ʻo ia ka 2-3 mau manawa o nā alumini alumini ʻē aʻe ma lalo o nā kūlana like.

2. ʻO ka paʻakikī maikaʻi: He kiʻekiʻe ke kiʻekiʻe o ka pauku shrinkage a me ka elongation rate o 7075 alumini alumini, a ʻo ke ʻano o ka haʻihaʻi he ʻokiʻoki, ʻoi aku ka maikaʻi no ka hana ʻana a me ka hana ʻana.

3. ʻO ka hana luhi maikaʻi: 7075 Aluminum alloy hiki ke hoʻomau i kona mau pono mechanical maikaʻi ma lalo o ke koʻikoʻi kiʻekiʻe a me ka hoʻouka pinepine ʻana, me ka ʻole o ka oxidation, crack a me nā mea ʻē aʻe.

4. maikaʻi loa i ka mālama ʻana i ka wela:7075 Aluminum huilahiki ke hoʻomau i kona mau waiwai mechanical maikaʻi i ke kiʻekiʻe wela o ke kaiapuni, ʻo ia ke ʻano o ka alumini alumini pale kiʻekiʻe.

5. ʻO ke kūpaʻa maikaʻi maikaʻi: 7075 Aluminum alloy maikaʻi ke kūpaʻa a hiki ke hoʻohana ʻia i ka hana ʻana i nā ʻāpana me nā koi kūpaʻa kiʻekiʻe.

Kūlana:

1.O-mokuʻāina: (ka mokuʻāina annealed)

ʻO ke ala hoʻokō: E wela i ka 7075 alumini alumini i kahi mahana kūpono, maʻamau ma 350-400 degere Celsius, mālama no kahi manawa a laila mālie mālie i ka lumi wela, ʻo ke kumu: e hoʻopau i ke kaumaha o loko a hoʻomaikaʻi i ka plasticity a me ka paʻakikī o ka. mea.ʻAʻole eʻoi aku ka ikaika o ka tensile o 7075 (7075-0 tempering) ma mua o 280 MPa (40,000 psi) a me ka ikaika loa o ka 140 MPa (21,000 psi). ʻO ka elongation o ka mea (e kikoo ana ma mua o ka pau ʻole) ʻo 9-10%.

2.T6 (lāʻau ʻelemakule):

ʻO ke ʻano o ka hoʻokō ʻana: ʻo ka lāʻau lapaʻau paʻa mua ka hoʻomehana ʻana i ka alloy i 475-490 degere Celsius a me ka hoʻoluʻu wikiwiki ʻana a laila ka mālama ʻana i ka wā kahiko, maʻamau ma 120-150 degere Celsius insulation no kekahi mau hola, ke kumu: e hoʻomaikaʻi i ka ikaika a me ka paʻakikī o ka mea. .ʻO ka ikaika tensile hope loa o T6 tempering 7075 he 510,540 MPa (74,00078,000 psi) me ka ikaika o ka hāʻawiʻana o 430,480 MPa (63,00069,000 psi). Loaʻa iā ia ka helu hoʻonui hemahema o 5-11%.

3.T651 (kokolo ʻana + paʻakikī ʻelemakule):

Ka hoʻokō 'ano hana: ma ke kumu o T6 elemakule paakiki, i kekahi mahele o ke kikoo aku e hoopau i koena stress, ke kumu: e malama kiʻekiʻe ikaika a me ka paakiki oiai e hoʻomaikaʻi plasticity a me ka toughness.The hope loa tensile ikaika o T651 tempering 7075 o 570 MPa (83,000). psi) a me ka ikaika hua o 500 MPa (73,000 psi). Loaʻa iā ia ka helu elongation hemahema o 3 - 9%. Hiki ke hoʻololi ʻia kēia mau ʻano ma muli o ke ʻano o ka mea i hoʻohana ʻia. Hiki i nā papa mānoanoa ke hōʻike i ka ikaika haʻahaʻa a me ka elongation ma mua o nā helu i helu ʻia ma luna.

Ka hoʻohana nui ʻana o 7075 alumini alumini:

1.Aerospace kahua: 7075 alumini alumini i hoʻohana nuiʻia ma ke kahua o ka aerospace ma muli o kona ikaika kiʻekiʻe a me nāʻano māmā. Hoʻohana pinepine ia i ka hana ʻana i nā hale mokulele, nā ʻēheu, nā bulkheads a me nā mea nui ʻē aʻe, a me nā hale ʻē aʻe e koi ai i ka ikaika kiʻekiʻe a me ke kūpaʻa corrosion.

2. ʻoihana kaʻa: ʻO ka alumini alumini 7075 kekahi hana koʻikoʻi i ka hana kaʻa. Hoʻohana pinepine ʻia i ka ʻōnaehana braking a me nā ʻāpana chassis o nā kaʻa hana kiʻekiʻe a me nā kaʻa heihei, i mea e hoʻomaikaʻi ai i ka hana o nā kaʻa a hoʻemi i ke kaumaha.

3. nā mea hoʻoikaika kino: Ma muli o kona ikaika kiʻekiʻe a me nā hiʻohiʻona māmā, hoʻohana pinepineʻia ka 7075 alumini alumini e hana i nā mea haʻuki, e like me nā lāʻau hele wāwae, nā kolepa, a pēlā aku.

4. ka hale mīkini: Ma ke kahua o ka hana mīkini, 7075 alumini alumini hoʻohana nui ʻia i ka hana ʻana i nā ʻāpana kikoʻī, nā mold a pēlā aku. Eia kekahi, hoʻohana nui ʻia ka 7075 alumini alumini i ka puhi ʻana i ka plastic (bottle) mold, ultrasonic plastic welding mold, kāmaʻa mole, pepa palaki pepa, foam forming mold, wax mold, model, fixture, mechanical equipment, mold processing and other fields. Hoʻohana ʻia ia e hana i nā kiʻi paʻi kiʻekiʻe alumini alumini.

Pono e hoʻomaopopo ʻia ʻoiai ʻo ka7075 alumini aluminiHe nui nā pono, pono nō e hoʻolohe i kāna hana kuʻi ʻana maikaʻi ʻole a me ke ʻano o ke koʻikoʻi o ka corrosion cracking, no laila pono ke hoʻohana ʻia ka pale alumini a i ʻole nā ​​​​lāʻau pale ʻē aʻe.

Ma keʻano laulā, he kūlana koʻikoʻi ka 7075 alumini alumini ma nā ʻoihana ʻoihana he nui no kāna hana maikaʻi loa a me ka hoʻohana ākea.