High-temperature titanium alloy, tsim nyob rau hauv lub xyoo 1950s nyob ze ntawm ib hom titanium bar alloy, nws thermal stability kub txog li 450 degrees, lub alloy tsis tsuas yog nyob rau hauv high kub nrog zoo thermal stability, siab creep zog thiab zoo heev damping zog, tab sis kuj muaj qhov kub thiab txias tensile zog. Extrusion nyob rau hauv lub a los yog ib tug + P theem cheeb tsam kub thiab nyob rau hauv lub p theem cheeb tsam kub extrusion piv rau cov hlau ntws ntau uniform. Qhov nyuaj ntawm kev tau txais qhov zoo ntawm qhov chaw rau cov khoom extruded yog qhov zoo. Cov txiaj ntsig ntawm kev kho cua sov ntawm lub koom haum thiab kev kub ntxhov siab ntawm titanium rods thiab titanium alloy tuav, kev sib piv ntawm cov khoom siv hluav taws xob hauv chav tsev kub thiab kub siab (425T) creep zog thiab cov yam ntxwv ntawm kev kho cua sov sib txawv, muab ib qho theoretical hauv paus rau kev tsim khoom loj ntawm no alloy thiab kev kho cua sov system siv.
Cov txheej txheem kev kho cua sov ntawm titanium rods thiab titanium alloy rods muaj peb yam hauv qab no: 1. cov khoom siv kho mob thiab kev laus: lub hom phiaj yog los txhim kho nws lub zog, titanium alloy thiab ruaj khov titanium alloy tsis tuaj yeem ntxiv dag zog los ntawm kev kho cua sov, hauv kev tsim khoom. ntawm tsuas yog annealing. + titanium alloy thiab muaj me me ntawm theem ntawm substable titanium alloy tuaj yeem ntxiv dag zog ntxiv los ntawm cov khoom siv kho mob thiab kev laus ntawm cov hlau. 2. kev ntxhov siab relieving annealing: lub hom phiaj yog tshem tawm los yog txo cov Residual stresses generated thaum lub sij hawm ua. Tiv thaiv cov tshuaj tua kab mob thiab txo cov deformation hauv qee qhov chaw corrosive.3. Ua kom tiav annealing: lub hom phiaj yog kom tau zoo toughness, txhim kho machinability, pab txhawb reworking thiab txhim kho stability ntawm loj thiab lub koom haum.
Kev sim xaiv los ntawm peb lub tshuab nqus tsev noj mov rauv melting TA11 titanium alloy ingots, lub ntsiab tshuaj muaj pes tsawg leeg nyob rau hauv txoj kab nrog rau cov kev cai ntawm tus qauv tshwj xeeb, theem hloov kub ntawm lub ingot los ntawm forging billet mus rau 35 hli, thiab thaum kawg nyob rau hauv lub 250 zeb dov mus rau hauv. 21.5mm titanium pas nrig, rods microstructure ntawm inhomogeneous P matrix faib ntawm incipient a-theem. φ250 zeb yog Baoji City, Lihang titanium kev lag luam Limited lav lub tuam txhab 26 hli titanium thiab titanium alloy bar ntau lawm yog ib qho tseem ceeb. thiab titanium alloy bar tsim cov khoom tseem ceeb. Lub zeb yog tsib-sawv transverse dov zeb, thawj, thib ob thiab thib peb stands rau peb-yob profile zeb, siv cov tsoos oblique wedge sab kho txoj kev kho lub mis yob, cov pos hniav ntoo pobzeb rau zawv zawg bearings. Hom zeb yob qhov sib txawv ntawm qhov kev hloov kho no yog pom tau los ntawm kev kho qhov nruab nrab yob thiab kho qhov chaw ntawm cov yob sab saud thiab qis. Qhov nruab nrab yob yog kho los ntawm kev tswj ntawm qhov chaw yob phau ntawv xov xwm thiab qhov sib txawv ntawm cov nplais ntoo sloping wedge tswj. Qhov me me ntawm qhov sib txawv, qhov zoo dua qhov nruab nrab yob yog tsau, qis dov kab los ntawm kev cuam tshuam ntawm dov quab yuam generated los ntawm lub runout kuj yog me me. Txawm li cas los xij, cov kabmob no nyob rau hauv titanium thiab titanium alloy bar dov txheej txheem muaj cov txheej txheem hauv qab no:
(1) nyob rau hauv cov txheej txheem dov, txhawm rau tiv thaiv kom tsis txhob muaj cua sov hnav ntawm cov nplais pobzeb, yuav tsum tau nchuav dej txias rau ntawm cov nplais glulam txias thiab lubrication, dej txias feem ntau yog txaws rau ntawm qhov chaw yob, ua rau cov pob zeb saum npoo kub. poob yog ceev heev, tshwj xeeb tshaj yog thaum emulsifying titanium thiab titanium alloys, vim titanium thiab titanium alloys nrog tsis zoo thermal conductivity, lub billet sab hauv thiab sab nraum qhov kub sib txawv yuav ntau dua, tsis conducive rau uniform deformation ntawm lub billet, dov. qhov tseeb tsis tuaj yeem lav;
(2) Cov kev sib txhuam tsis sib haum ntawm cov kab npoo sab kho yog qhov loj, thiab lub zog noj thaum lub sij hawm dov kuj loj, txawm tias siv 630kW lub cev muaj zog, qhov tshwm sim ntawm bogging cia feem ntau tshwm sim, uas cuam tshuam rau kev tsim khoom.
(3) Thaum cov yob nruab nrab thiab qis qis yog overfeeding, lub zog emulsion tseem cuam tshuam rau ntawm nruab nrab yob, uas ua rau cov khoom siv los tiv thaiv cov hlua khi ntawm cov hlua khi tsis tau sai, thiab lub xeev ruaj khov ntawm qhov nruab nrab yob kho yog puas;
(4) Qhov hloov kho qhov hloov pauv nrog kev puas tsuaj ntawm lub xeev ruaj khov ntawm qhov chaw yob, uas cuam tshuam rau kev ruaj ntseg ntawm qhov loj ntawm titanium rods, thiab thaum kawg cuam tshuam rau qhov zoo ntawm cov khoom tiav. Txhawm rau ua kom tau raws li cov xwm txheej ntawm kev ruaj khov ntawm cov titanium rods, cov kabmob ntawm qhov tsawg φ250 zeb tau hloov kho, titanium thiab titanium alloy rods nrog qhov ntev ruaj khov, txhim kho sab nrauv zoo thiab nce yield. Titanium alloy bar tom qab muab ob npaug rau kev kho cua sov, nws cov microstructure yog ib tug raug bimodal lub koom haum, nrog rau qhov nce ntawm tib cov tshuaj kub, qhov txias npaum li cas ntawm kev loj hlob sai ntawm nws cov qoob loo, lub koom haum ntawm cov nplej loj tau txhim kho. Nrog rau qhov nce ntawm cov kua dej kub, qhov ceev ntawm qhov txias txias, qhov zoo dua nws qhov kub thiab txias creep kev ua tau zoo, qhov siab dua lub zog ntawm chav tsev kub, tab sis cov yas yog txo.
