Ka kakaretso, e le hore u fumane thepa e phahameng ea mechine, mocheso o phahameng oa extrusion o lokela ho khethoa.Leha ho le joalo, bakeng sa motsoako oa 6063, ha mocheso o tloaelehileng oa extrusion o phahame ho feta 540 ° C, thepa ea mochine oa profil ha e sa tla hlola e eketseha, 'me ha e le ka tlase ho 480 ° C, matla a tsitsitseng a ka' na a se ke a tšoaneleha.
Haeba mocheso oa extrusion o phahame haholo, li-bubble, mapetsong, le mekoloko ea holim'a metsi esita le li-burrs li tla hlaha sehlahisoa ka lebaka la aluminium e khomarelang hlobo.Ka hona, e le hore u fumane lihlahisoa tse nang le boleng bo phahameng ba holim'a metsi, mocheso o batlang o le tlase oa extrusion o atisa ho sebelisoa.
Thepa e ntle e boetse ke ntlha ea bohlokoa ea ho ntlafatsa katleho ea tlhahiso ea aluminium extrusion, haholo-holo likarolo tse tharo tse kholo tsa aluminium extruder, aluminium rod futhumatsang sebōpi, le sebōpi se futhumatsang hlobo.Ho feta moo, ntho ea bohlokoa ka ho fetisisa ke ho ba le opereishene e babatsehang ea extrusion.
Tlhahlobo ea Mocheso
Li-bars le lithupa tsa aluminium li hloka ho futhumatsoa pele ho extrusion ho fihlela mocheso o haufi le mocheso oa solvus, e le hore magnesium e ka har'a molamu oa aluminium e ka qhibiliha le ho phalla ka mokhoa o tšoanang ka thepa ea aluminium.Ha molamu oa aluminium o kenngoa ka har'a extruder, mocheso ha o fetohe haholo.
Ha extruder e qala, matla a maholo a sututsang a molamu oa extruding a sutumelletsa thepa ea aluminium e nolofalitsoeng ho tsoa ka lesoba la die, e hlahisang likhohlano tse ngata, tse fetoloang mocheso, e le hore mocheso oa profil e fetelletseng o fete mocheso oa solvus.Ka nako ena, magnesium e qhibiliha 'me e phalla hohle, e leng e sa tsitsang haholo.
Ha mocheso o phahama, ha oa lokela ho ba o phahameng ho feta mocheso oa solidus, ho seng joalo aluminium e tla boela e qhibilihe, 'me profil e ke ke ea thehoa.Ho nka mohlala oa 6000 letoto la motsoako, mocheso oa molamu oa aluminium o lokela ho bolokoa pakeng tsa 400-540 ° C, haholo-holo 470-500 ° C.
Haeba mocheso o phahame haholo, o tla baka ho taboha, haeba o le tlase haholo, lebelo la extrusion le tla fokotseha, 'me boholo ba likhohlano tse hlahisoang ke extrusion li tla fetoloa mocheso, ho etsa hore mocheso o phahame.Ho phahama ha mocheso ho lekana le lebelo la extrusion le khatello ea extrusion.
Mocheso oa mocheso o lokela ho bolokoa pakeng tsa 550-575 ° C, bonyane ka holimo ho 500-530 ° C, ho seng joalo magnesium ka motsoako oa aluminium e ke ke ea qhibiliha 'me ea ama thepa ea tšepe.Empa ha ea lokela ho ba holimo ho feta mocheso oa solidus, mocheso o phahameng haholo o tla baka ho taboha le ho ama boleng ba boemo ba profil.
Mocheso o nepahetseng ka ho fetisisa oa molamu oa aluminium o lokela ho fetoloa hammoho le lebelo la extrusion e le hore phapang ea mocheso oa extrusion e se ke ea fokotseha ho feta mocheso oa solvus mme o se phahametse mocheso oa solidus.Li-alloys tse fapaneng li na le mocheso o fapaneng oa solvus.Mohlala, mocheso oa solvus oa 6063 alloy ke 498°C, athe oa 6005 alloy ke 510°C.
Lebelo la Terekere
Lebelo la terekere ke sesupo sa bohlokoa sa katleho ea tlhahiso.Leha ho le joalo, litlaleho tse fapaneng, libopeho, li-alloys, boholo, joalo-joalo li ka ama lebelo la terekere, le ke keng la akaretsa.Lifeme tsa sejoale-joale tsa profil ea bophirima li ka fihlela lebelo la terekere ea limithara tse 80 ka motsotso.
Sekhahla sa molamu oa Extrusion ke sesupo se seng sa bohlokoa sa tlhahiso.E lekantsoe ka limilimithara ka motsotso mme lebelo la molamu oa extrusion hangata le tšepahala ho feta lebelo la terekere ha ho ithuta katleho ea tlhahiso.
Mocheso oa hlobo o bohlokoa haholo ho boleng ba li-profiles tse extruded.Mocheso oa hlobo o lokela ho bolokoa ho hoo e ka bang 426 ° C pele ho extrusion, ho seng joalo e tla koala habonolo kapa e senye hlobo.Sepheo sa ho tima ke ho "hatsetsa" motsoako oa motsoako oa magnesium, ho tsitsisa liathomo tse sa tsitsang tsa magnesium le ho li thibela ho tsitsa, e le ho boloka matla a profil.
Mekhoa e meraro ea mantlha ea ho tima e kenyelletsa: ho pholisa moea, ho pholisa moholi oa metsi, ho pholisa tanka ea metsi.Mofuta oa ho tima o sebelisitsoeng o itšetlehile ka lebelo la extrusion, botenya le thepa e hlokahalang ea 'mele ea profil, haholo-holo litlhoko tsa matla.Mofuta oa alloy ke sesupo se felletseng sa ho thatafala le thepa ea rekere ea alloy.Mefuta ea alloy ea aluminium e hlalositsoe ka botlalo ke American Aluminium Association, 'me ho na le linaha tse hlano tsa motheo:
F e bolela "joalokaha e entsoe".
O e bolela "lihlahisoa tse entsoeng ka annealed".
T e bolela hore e 'nile ea "phekoloa mocheso".
W e bolela hore thepa e 'nile ea phekoloa mocheso oa tharollo.
H e bua ka li-alloys tse sa phekoleheng ka mocheso tse "sebetsang serame" kapa "strain hard hard".
Mocheso le nako ke li-index tse peli tse hlokang taolo e tiileng ea botsofali ba maiketsetso.Sebōping sa botsofali sa maiketsetso, karolo e 'ngoe le e' ngoe ea mocheso e tlameha ho tšoana.Le hoja botsofali ba mocheso o tlaase bo ka ntlafatsa matla a litlaleho, nako e hlokahalang e tla tlameha ho eketseha ka tsela e nepahetseng.E le hore u finyelle thepa e ntle ka ho fetisisa ea tšepe ea 'mele, ho hlokahala hore u khethe motsoako o nepahetseng oa aluminium le sebopeho sa oona se nepahetseng, sebelisa mokhoa o nepahetseng oa ho tima, ho laola mocheso o loketseng oa botsofali le nako ea botsofali ho ntlafatsa chai, lihlahisoa ke index e' ngoe ea bohlokoa ea tlhahiso. bokgabane.Ho ea ka khopolo, ha ho khonehe ho fumana chai ea 100%, hobane li-butts li tla khaola lisebelisoa ka lebaka la matšoao a pinch ea literekere le li-stretcher.
E hlophisitsoeng ke May Jiang ho tsoa ho MAT Aluminium
Nako ea poso: Jun-05-2023
