Amapayipi ensimbi adonsa abandayoUkwelulwa nokwehliswa kwendawo

I-Cold drawn iyinhlangano yenqubo, yezinto zensimbi, ebhekisela emdwebeni ukuze kuzuzwe umumo othile kanye nezakhiwo ezithile zemishini, impahla ingaphansi kwezimo zokushisa zegumbi zokudweba.Imikhiqizo edonswa ngokubanda uma iqhathaniswa ne-thermoforming: ukunemba okuphezulu kwe-dimensional kanye nezinzuzo ezinhle zokuqeda ngaphezulu.

Ukudweba ipayipi elikhulu lensimbi Elongation (σ), ekuhlolweni okuqinile, Ubude besampula ngemva kokuthwebula ububanzi bayo bukhuphuke njengephesenti lobude begeji yoqobo ebizwa ngokuthi i-elongation.Ngeσ kuvezwe ngamayunithi angu-%.Ifomula ithi: lapho : L1 - isifanekiso sobude begeji ephukile, mm;I-L0 - ubude be-specimen gauge yasekuqaleni, mm.

Ukudweba ingxenye enkulu yepayipi yokuncipha (ψ) ekuhlolweni okuqinile, isampula enkulu yokuncipha kwephesenti enani lendawo ephambanayo yoqobo yendawo yayo ephambanayo ekudonsekeni kwentamo, okwaziwa ngokuthi ukushwabana kwesigaba.Kuyaψ kuvezwe ngamayunithi angu-%.Kubalwe kanje: lapho: S0 – isifanekiso sokuqala sendawo enqamulayo, mm2;I-S1 – isifanekiso sentamo ephukile okungenani indawo ephambanayo, mm2.

Isampula yokuhlola eqinile entanyeni yenqubo yokuguqulwa kwepulasitiki.Bese ukunwetshwa kwesampula kubonise ubukhulu obuzinzile besigaba esiphambanayo eduze kwengxenye yentamo yesifanekiso siqhubeka nokunwetshwa, kuze kube yilapho yonke isampula iba yisimo sentamo.Ukwehla okubukhali kwentamo kwenzeka esigabeni sokucindezeleka kwesivuno.Lapho izinga lokushisa lokudweba lensimbi ngamaphoyinti emdwebeni ongaphansi kokushisa kwe-recrystallization yomdwebo, emdwebeni ongaphezulu kokushisa kwe-recrystallization kuyashisa ukudweba ekushiseni okuphakeme kunezinga lokushisa elingaphansi kokushisa kwe-recrystallization yokudonsa umdwebo.Ukudweba ucingo lwensimbi, umdwebo wokukhiqiza izintambo ngendlela evamile.I-thermal edonsa ucingo ukuze ishiselwe ngaphambi kokungena e-die orifice, insimbi ephikisayo isetshenziselwa ukudweba, njenge-tungsten, i-molybdenum nezinye izintambo zensimbi.Lapho izinga lokushisa lidonsa ucingo ludinga kuphela ukudonselwa emgodini wokufa nge-heater ukuya ebangeni lokushisa elithile elicacisiwe, ikakhulukazi ngocingo lwe-zinc, ucingo kunzima ukuguqulwa njengensimbi enesivinini esikhulu, umdwebo wensimbi.