Kwindawo ephezulu yokusebenza kwe-aluminium alloys,7075 T652 imivalo aluminiyam umkhandizigqame njengebenchmark yamandla, ukuqina, kunye nozinzo lwe-dimensional, zibenza zibe yimathiriyeli yokuzikhethela kumashishini apho "ikhaphukhaphu kodwa yomelele" ingeyomfuneko nje, kodwa ngumqhubi obalulekileyo wokusebenza ngokufanelekileyo. Ngokungafani namabakala aqhelekileyo e-aluminium, i-7075 T652 ithatha inkqubo echanekileyo yokutshisa i-hot forging edityaniswe ne-T652 yonyango lokushisa (isisombululo se-annealing, ukucima, kunye nokuguga okwenziwe ngamaqondo okushisa alawulwayo), okubangela ukuba kubekho izinto eziphelisa iziphene zangaphakathi, ukucoca isakhiwo sokutya okuziinkozo, kunye nokuvula iipropati ezikhethekileyo zomatshini. Kubenzi bobunjineli be-aerospace, i-automotive, kunye nobunjineli obuchanekileyo, le ngqungquthela ibhuloho i-gap phakathi kokuthembeka kwezinto eziluhlaza kunye nokusebenza kwemveliso yokugqibela, ukujongana neentlungu eziphambili ezifana nokungaphumeleli kwecandelo phantsi koxinzelelo oluphezulu, ukungasebenzi kwamandla okuhambelana nobunzima, kunye nemigangatho engqongqo yokuthotyelwa kweshishini.

1. Ukubunjwa kweMichiza: Isiseko sokuSebenza okuPhezulu

Iimpawu ezikhethekileyo ze-7075 T652 imivalo ye-aluminiyam ye-aluminiyam igxininisekile ekubunjweni kweekhemikhali ezilungelelanisiweyo, apho i-alloying nganye idlala indima ekujoliswe kuyo ekwandiseni amandla, ukuxhathisa ukubola, kunye nokuqhubekeka. Njengelungu le-7000 series aluminium alloys (i-zinc-magnesium-copper alloys), ukuqulunqwa kwayo kuhambelana nemigangatho engqongqo ye-ASTM B211 kunye ne-EN 573-3, iqinisekisa ukuhambelana kuyo yonke ibhetshi, into engenakuxoxisana kumashishini anokunyamezela kwe-zero kwizinto eziphathekayo.

Izinto eziphambili ze-alloying ngumqolo wokusebenza kwayo:

- Zinc (Zn): 5.1% ~ 6.1%. Into ephambili yokuqinisa amandla. I-Zinc yenza iikhompawundi ze-intermetallic (umzekelo, i-MgZn₂) ngexesha lonyango lobushushu, eyenza ukuba utyikityo lwe-alloy lube namandla aphezulu okuqina ngokuqina kwemvula.

- Magnesium (Mg): 2.1% ~ 2.9%. Isebenza ngokubambisana ne-zinc ukukhulisa ukuqina kwemvula. Ngokukhuthaza ukubunjwa kwe-fine, i-precipitates efanayo kwi-matrix ye-aluminium, i-magnesium yongeza amandla kunye nokumelana nokudinwa, okubalulekileyo kumacandelo aphantsi kwemithwalo ephindaphindiweyo.

- Ubhedu (Cu): 1.2% ~ 2.0%. Ukwandiswa nje kuphela amandla kodwa kunye nokusebenza kunye noxinzelelo lwe-corrosion cracking (SCC) ukumelana. Ubhedu luguqula ukwakheka kwezigaba ze-intermetallic, ukunciphisa ubuqhophololo kunye nokuphucula impendulo ye-alloy kwimisebenzi yomatshini echanekileyo efana nokusila kunye nokugrumba.

Izinto zokulandela kunye nokungcola zilawulwa ngokuqinileyo ukunqanda ukuthotywa kokusebenza:

- I-Chromium (Cr): 0.18% ~ 0.28%. Isebenza njengesisulungesi sokutya okuziinkozo, inciphisa ukukhula kweenkozo ngexesha lokubunjwa kunye nonyango lobushushu. Oku kubangela i-microstructure efanayo ngakumbi, eguqulela kwiipropati ezihambelanayo zoomatshini kuyo yonke ibha.

- Intsimbi (Fe) & Silicon (Si): ≤0.50% nganye. Ukuncitshiswa njengokungcola, njengoko amanqanaba agqithisileyo anokwenza amaqhekeza angama-coarse intermetallic (umzekelo, i-Al₃Fe) eyenza buthathaka i-alloy kunye nokunciphisa i-ductility.

- IManganese (Mn), iTitanium (Ti), kunye nezinye izinto: ≤0.30% iyonke. Ukongezwa kwiincinci ezincinci ukuqhubela phambili ukuzinzisa i-matrix kunye nokuphucula ukuzinza kwe-thermal, ukuqinisekisa ukuba i-alloy igcina iipropati zayo nakwiindawo eziphantsi kweqondo lokushisa.

2. Ukusebenza okuBanzi: Apho Amandla Adibana khona noKuguquguquka

Iprofayili yokusebenza ye-7075 T652 ye-aluminium eyakhiweyo ye-aluminiyam yi-masterclass yokulinganisa iimfuno zezinto eziphathekayo eziphikisanayo, ezinikezela amandla aphezulu entsimbi, inzuzo ekhaphukhaphu ye-aluminiyam, kunye nokusetyenzwa kwee-alloys ezithambileyo. Ukusebenza kwayo akukhona nje "ukuchukumisa" kwiimvavanyo zaselebhu; yenzelwe ukuba imelane noxinzelelo lwehlabathi lokwenyani, ukusuka kuxinzelelo olugqithisileyo kumacandelo e-aerospace ukuya kwi-vibration rhoqo kwiindawo zemoto.

Ukusebenza koomatshini: Amandla aKhokela kwiShishini

Emva kokunyanga kwe-T652 yokushisa (isonjululwe kwi-460 ° C ~ 480 ° C, yacinywa emanzini, kwaye ikhulile ngokusemgangathweni kwi-120 ° C ~ 130 ° C kwiiyure ezingama-24), i-alloy ifezekisa iipropati zomatshini ezigqithise kakhulu isinyithi esingenaso intsimbi:

- Amandla Okuqina (σb): ≥510 MPa. Igqithisa kwiintsimbi ezininzi eziphantsi kwekhabhoni ngelixa inobunzima be-1/3 kuphela, iyenza ilungele izakhiwo ezinobuthathaka.

- Amandla eSivuno (σ0.2): ≥470 MPa. Uqinisekisa ukuba izinto ziyamelana noguquko olusisigxina naphantsi komthwalo omileyo okanye oguqukayo, onje ngezixhobo zokumisa inqwelomoya okanye iishafti zoomatshini.

- Ukwandiswa ngexesha leBreakti (δ): ≥8% I-metric ebalulekileyo yokuqina; ngokungafaniyo ne-brittle high-alloys yamandla, i-7075 T652 igcina i-ductility eyaneleyo yokufunxa amandla empembelelo, ukunciphisa umngcipheko wokungaphumeleli ngokukhawuleza.

- Amandla okukhathala (i-10⁷ imijikelezo): ≥150 MPa Okubalulekileyo kumacandelo aphantsi koxinzelelo oluphindaphindiweyo, njengamacandelo okumisa iimoto okanye iishafu ezijikelezayo, apho ukukhathala ukuqhekeka kuyindlela yokungaphumeleli eqhelekileyo.

Ukwenziwa koMzimba kunye nokusiNgqongileyo

Ngaphandle kwamandla omatshini, iipropathi zendalo zealloy ziphucula ukusebenza kwayo kwizicelo ezahlukeneyo:

- Ubuninzi: 2.81 g/cm³ 35% khaphukhaphu kunentsimbi (7.85 g/cm³) kunye ne-10% ikhaphukhaphu kune-titanium (4.51 g/cm³), icutha ngokuthe ngqo ukusetyenziswa kwamafutha kwiimoto/usetyenziso lwe-aerospace kunye nofakelo lula koomatshini abakhulu.

- I-Thermal Conductivity: I-130 W/(m·K) Ngaphantsi kune-aluminiyam ecocekileyo (237 W/(m·K)) kodwa yanele ukutshatyalaliswa kobushushu kumacandelo afana nee-enclosure zombane okanye iinxalenye ze-injini, ukuthintela ukufudumeza.

- Ukumelana nokuMhlwa: Phakathi ukuya Phezulu. Xa idityaniswe nonyango olungaphezulu (umzekelo, i-anodizing, ukuguqulwa kwechromate), iyayixhathisa i-oxidation kunye nohlaselo lweekhemikhali kwiindawo ezirhabaxa, ezinje ngolwandle okanye kwimizi-mveliso. Ngokungafaniyo ne-7075 engaphathwanga, i-T652 i-tender inciphisa i-SCC, inzuzo ephambili ngaphezu kwamanye amabakala aphezulu e-aluminium.

Ukuqhubekiswa koMsebenzi: Ukulungelelaniswa kuMveliso ochanekileyo

Ukuqamba ayisiyonto njeinkqubo yokubunjwa kwe-7075 T652. Yindlela yokwenza ngcono ukusebenza. Inkqubo yokufudumala eshushu (ngokuqhelekileyo kwi-350-450 ° C) ilungelelanisa isakhiwo sengqolowa ye-alloy kunye nesalathiso soxinzelelo, ukuqinisa amandla kwii-axes ezibalulekileyo ezithwala imithwalo. Ukongeza:

- Ubuchule: Kugqwesileyo. Umxholo wobhedu unciphisa ukunxiba kwesixhobo, ukuvumela ukunyamezela okuqinileyo (ukuya kuthi ga kwi-± 0.005 mm) kwimisebenzi echanekileyo yomatshini. Oku kubalulekile kumalungu afana neevalvu zehydraulic okanye iziqhoboshi ze-aerospace, apho ukuchaneka kobukhulu bungaxoxiswana.

- Weldability: Kuyalawulwa. Ngelixa ingadityaniswanga njenge-6061 ialuminiyam, inokudityaniswa kusetyenziswa ubuchule obukhethekileyo (umzekelo, i-friction stir welding) ngonyango lwangaphambili nolwe-weld lobushushu, ukwandisa ukusetyenziswa kwayo kwizakhiwo ezinkulu ezidityanisiweyo.

- Ukubunjwa: Phakathi. Imivalo eyakhiweyo igcina i-ductility eyaneleyo kwiinkqubo zokuyila zesibini ezifana nokugoba okanye i-extrusion, izenza ziqhelane noyilo lwecandelo lesiko.

3. Umda weSicelo: Ukunika amandla aMashishini aBanga kakhulu

I-7075 T652 imivalo ye-aluminium eyakhiweyo indibaniselwano yamandla, ubunzima, kunye nokuqhubekeka kubenza babaluleke kakhulu kumashishini apho ukusilela kuyindleko enkulu, kwaye ukusebenza kakuhle kubaluleke kakhulu. Ngezantsi ziindawo zayo eziphambili zesicelo, nganye ibotshelelwe ngokuthe ngqo kwiinzuzo zayo zokusebenza:

I-Aerospace kunye noKhuseleko

Ishishini le-aerospace lelona likhulu lamkela i-7075 T652, ngenxa yokuthobela imigangatho ye-aerospace (umzekelo, i-AMS 4343). Izicelo eziphambili ziquka:

-Amacandelo oLwakhiwo lweNqwelo-moya: Ii-spars zamaphiko, iifreyimu zefuselage, kunye nezixhobo zokumisa apho amandla ayo aphezulu ukuya kubunzima bobunzima bunciphisa ubunzima benqwelomoya (kwaye ke iindleko zepetroli) ngelixa idibana neemfuno zokhuseleko ze-FAA.

-Izixhobo zoKhuselo: Iipleyiti zesikrweqe zeenqwelo zomkhosi kunye nezakheko zedrones apho ukuchasana kwempembelelo kunye noyilo olukhaphukhaphu kuphucula ukuhamba ngaphandle kokubeka esichengeni ukhuseleko.

Iimoto (Ukusebenza okuphezulu kunye neZithuthi zoMbane)

Kutshintsho oluya kwizithuthi zombane (EVs) kunye neemoto zomdyarho ezikumgangatho ophezulu, ukunciphisa ubunzima kubalulekile ekwandiseni uluhlu lwebhetri kunye nokuphucula ukuphatha. 7075 T652 isetyenziselwa:

-Amacandelo e-EV Powertrain: Ishafu zemoto kunye neendawo ezivaliweyo zebhetri apho amandla ayo akhusela izinto zombane ezibuthathaka, kwaye uyilo lwayo olukhaphukhaphu lunciphisa ubunzima besithuthi siphela.

-Izahlulo zoMdyarho weMoto: Iingalo ezimisiweyo, iingalo zokuqhuba, kunye neecaliper zokuqhobosha apho ukumelana nokudinwa kumelana noxinzelelo olugqithisileyo lokuqhuba ngesantya esiphezulu, kwaye ubuchwephesha bayo buvumela ukuphaphatheka, uyilo lwesiko.

Oomatshini boShishino kunye nobunjineli obuchanekileyo

Kwizixhobo zemizi-mveliso ezisebenza phantsi koxinzelelo rhoqo okanye zifuna ukunyamezelana okuqinileyo, i-7075 T652 ihambisa ukuthembeka:

- Oomatshini abanzima: I-hydraulic cylinder rods kunye ne-crane components apho amandla ayo emveliso ephezulu exhathisa ukugoba phantsi kwemithwalo enzima, kwaye ukuxhathisa ukubola kwayo kumelana neendawo zangaphandle okanye zemizi-mveliso.

- Izixhobo ezichanekileyo: Izixhobo zomatshini zokuphotha kunye neengalo zerobhothi apho ukuzinza kwayo kwe-dimensional (i-coefficient yokwandisa i-thermal ephantsi: 23.6 μm / (m · K)) iqinisekisa ukusebenza okuhambelanayo nangexesha elide lokuvelisa.

Ezaselwandle kunye ne-Offshore

Ngelixa i-aluminiyam ingeyiyo iqhele ukukhetha kwizicelo zaselwandle, i-7075 T652 (enonyango olufanelekileyo lomphezulu) iyagqwesa:

-I-Hardware ye-Marine: I-shafts ye-propeller yesikhitshane kunye nezixhobo zokurhweba apho uyilo lwayo olukhaphukhaphu lulula ukufakwa, kunye nokumelana nokuhlwa kwayo (xa i-anodized) imelana nokuvezwa kwamanzi etyuwa.

Ubudlelwane nathi ngePremium 7075 T652 iiBha zeAluminiyam ezakhiweyo

Sisebenza ngokukhethekileyo ekuveliseni7075 T652 imivalo aluminiyam umkhandiehlangabezana neyona migangatho ingqongqo yoshishino ukusuka kwi-ASTM ukuya kwi-AMS. Inkqubo yethu yokubumba isebenzisa izixhobo zanamhlanje zokuqinisekisa ubume obufanayo obuziinkozo, kwaye ibhetshi nganye ivavanywa ngokuqatha (uvavanyo lokuqina, uvavanyo lokuqina, kunye nohlalutyo lwemichiza) ukuqinisekisa ukuhambelana kokusebenza. Nokuba ufuna ubude besiko, iidayamitha, okanye unyango olungaphezulu (i-anodizing, i-powder coating), iqela lethu lobunjineli lisebenza nawe ukuhambisa izisombululo ezihambelana nesicelo sakho.

Kwi-aerospace, i-automotive, okanye abavelisi bemizi-mveliso abafuna isisombululo esiphezulu se-aluminiyam, i-7075 T652 ye-aluminium eyakhiweyo iyimpendulo. Qhagamshelana nathi namhlanje ukuze ucele idatha yobugcisa