Oyi dọtara ígwè ọkpọkọElongation na mbelata nke mpaghara
Oyi a na-adọta bụ usoro ihe eji eme ihe, maka ihe ígwè, na-ezo aka na ịbịaru iji nweta ọdịdị ụfọdụ na ụfọdụ ihe eji arụ ọrụ, ihe ahụ dị n'okpuru ọnọdụ okpomọkụ maka ịbịaru.Oyi dọtara ngwaahịa tụnyere thermoforming: elu akụkụ ziri ezi na ezi elu imecha uru.
Na-eru nnukwu dayameta ígwè anwụrụ Elongation (σ), N'ime ule tensile, Ogologo ihe nlele ahụ mgbe ọnyà ya na-abawanye dị ka pasent nke ogologo nlele mbụ a na-akpọ elongation.Ya naσ ekwuputara na nkeji nke %.Usoro bụ: ebe: L1 - ihe atụ gbajiri ogologo nlele ogologo, mm;L0 - ogologo ihe nlele mbụ, mm.
Na-ese nnukwu dayameta anwụrụ ngalaba shrinkage (ψ) N'ime ule nyocha, ihe nleba anya na-ebelata pasent kachasị na ọnụ ọgụgụ nke ebe mbụ nke mpaghara cross-section nke ebe a na-adọta olu, nke a maara dị ka nkwụsị nke ngalaba.Ijiψ ekwuputara na nkeji nke %.A gbakọrọ dị ka ndị a: ebe: S0 - ihe nlere mbụ nke mpaghara obe, mm2;S1 – ihe atụ gbajiri olu opekata mpe mpaghara gafere, mm2.
Nlele ule tensile n'olu nke usoro nrụrụ rọba.Mgbe ahụ elongation nke ihe nlele ahụ gosipụtara akụkụ na-aga n'ihu na-agafe n'akụkụ akụkụ olu nke ihe atụ ahụ na-aga n'ihu na-agbasawanye, ruo mgbe ihe nlele ahụ dum na-aghọ ọnọdụ olu.Mbelata dị nkọ n'olu mere na ọkwa nrụgide mkpụrụ.Mgbe ịbịaru okpomọkụ nke metal na isi ihe na ịbịaru n'okpuru recrystallization okpomọkụ nke ịbịaru, na ịbịaru n'elu recrystallization okpomọkụ na-ekpo ọkụ ịbịaru na okpomọkụ dị elu karịa ụlọ okpomọkụ n'okpuru recrystallization okpomọkụ nke ịbịaru sere.Ịmepụta waya igwe, mmepụta waya na-ese ụzọ a na-ahụkarị.Thermal na-adọta waya ka ekpo ọkụ tupu abanye na die orifice, na refractory metal bụ tumadi eji maka osise, dị ka tungsten, molybdenum na ndị ọzọ metal waya.Mgbe okpomọkụ dọtara waya mkpa naanị a ga-adọta n'ime anwụ oghere site a kpo oku ka kpọmkwem okpomọkụ nso, tumadi maka zinc waya, waya siri ike deformation dị ka elu na-agba ígwè, na-ebu ígwè osise.
Oge nzipu: Mar-04-2020