Titanium alloy hlau, raws li cov khoom siv tseem ceeb hauv kev lag luam niaj hnub no, muaj ntau yam kev siv, npog thaj chaw tseem ceeb xws li aviation fasteners, cov neeg siv khoom siv hluav taws xob (3C cov khoom), cov iav tsom iav, cov khoom siv tsheb, cov khoom siv kho mob thiab cov khoom siv vuam. Txhawm rau kom ua tiav cov khoom siv hlau zoo thiab ua tau zoo, cov cuab yeej kos duab txias tau dhau los ua ib txoj hauv kev tseem ceeb, tshwj xeeb tshaj yog thaum txoj kab uas hla yuav tsum yog 30% -40% loj dua li cov khoom kawg. Kab lus no yuav tshawb nrhiav ntau yam tseem ceeb thiab cov tswv yim ua kom zoo uas cuam tshuam rau kev kos duab ntawm titanium alloy hlau.
1.Strict tswj ntawm raw khoom zoo
Tshuaj muaj pes tsawg leeg: Cov tshuaj muaj pes tsawg leeg ntawm titanium alloy ncaj qha cuam tshuam rau nws lub cev thiab txhua yam khoom. Nws yog ib qho tseem ceeb kom tswj hwm cov ntsiab lus ntawm cov ntsiab lus xws li H, O, N, Fe, thiab Si. Piv txwv li, H lub ntsiab lus yog nquag rau hydrogen embrittlement thiab yuav tsum tau nruj me ntsis saib xyuas thiab tswj nyob rau hauv ib tug ntau yam ntawm kev nyab xeeb.
Qhov zoo ntawm qhov chaw: yuav tsum tsis muaj qhov tsis xws li cov kab nrib pleb, folds, thiab nti ntawm qhov chaw ntawm cov khoom siv raw. Cov teeb meem no tuaj yeem nthuav dav thaum lub sij hawm kos duab, ua rau txo lub zog los yog tawg. Yog li ntawd, cov khoom siv raw yuav tsum tau soj ntsuam nruj nreem thiab pretreatment los xyuas kom meej ib tug du thiab defect-dawb nto.
2.Optimization ntawm kev kho cua sov txheej txheem
Kev kho cua sov ua lub luag haujlwm tseem ceeb hauv kev kos duab ntawm titanium alloy hlau. Annealing kev kho mob (nrog rau kev kho mob ua ntej annealing, intermediate annealing thiab tiav annealing) aims kom txo tau kev ua hauj lwm hardening, txhim kho lub elongation thiab plasticity ntawm cov khoom, thiab tsim kom muaj tej yam kev mob rau lub tom ntej no daim duab txheej txheem. Qhov tsim nyog annealing system tuaj yeem txhim kho lub koom haum cov qauv ntawm cov khoom siv thiab txhim kho cov duab kos.
3.Kev xaiv thiab tsim cov duab kos tuag
Cov khoom siv pwm: Kev kos duab tuag feem ntau yog ua los ntawm carbide (xws li YK6, YK8) thiab pob zeb diamond. Carbide yog dav siv rau nws qhov siab hardness thiab zoo hnav tsis kam, thaum lub pob zeb diamond kos duab tuag yog thawj qhov kev xaiv rau kev kos duab zoo thiab ultra-nplua xov hlau vim lawv cov hardness tsis tshua muaj siab thiab hnav tsis kam, txawm tias lawv kim thiab nyuaj rau kev ua haujlwm.
Pwm tsim: Cov qauv tsim pwm yuav tsum tau hloov kho raws li cov lus qhia ntawm cov hlau thiab cov duab kos. Cov duab zoo sib xws muaj xws li arc-shaped tuag thiab conical tuag, uas yog tsim rau cov xov hlau ntawm cov kab sib txawv. Kev tsim ntawm lub qhov tuag kuj yuav tsum tau ua tib zoo xav, suav nrog lub khob hliav qab, lub khob hliav qab ua haujlwm, qhov loj me thiab qhov hluav taws xob lub khob hliav qab kom ntseeg tau tias cov hlau tsis zoo thiab qhov zoo yog ruaj khov thaum lub sijhawm teeb duab.
4.Fine hloov ntawm cov txheej txheem tsis
Hla kev deformation: Titanium alloy muaj chav tsev kub tsis tshua muaj tensile plasticity, yog li qhov kev deformation yuav tsum tau tswj xyuas kom tsis txhob muaj cov hlau tawg ntau dhau. Los ntawm maj mam nce qhov deformation, lub koom haum cov qauv ntawm cov khoom yog maj mam txhim kho thiab lub zog tensile yog txhim kho. Tag nrho cov deformation: Qhov nce ntawm tag nrho cov deformation yuav ua rau kom lub zog ntawm titanium alloy hlau, tab sis nws kuj yuav ua rau hnyav ua hauj lwm hardening thiab txo toughness. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum sib npaug kev sib raug zoo ntawm lub zog thiab toughness raws li cov kev xav tau tshwj xeeb los txiav txim siab qhov zoo tag nrho deformation.
Daim duab nrawm: Kev kos duab nrawm yog ib qho tseem ceeb cuam tshuam rau kev ua haujlwm ntawm titanium alloy hlau. Kev ua kom nrawm nrawm tuaj yeem txhim kho kev tsim khoom thiab txuag lub zog, tab sis cov hlau zoo thiab kev ruaj ntseg ntawm cov txheej txheem kos duab yuav tsum tau ua kom ntseeg tau. Los ntawm kev kho cov duab nrawm, tus cwj pwm deformation thiab microstructure ntawm cov khoom tuaj yeem ua kom zoo.
Cov txheej txheem titanium alloy hlau kos duab muaj kev tswj xyuas zoo thiab kev ua kom zoo ntawm ntau yam tseem ceeb. Los ntawm kev tswj hwm cov khoom zoo ntawm cov khoom siv raw, optimizing cov txheej txheem kev kho cua sov, xaiv cov duab kos kom haum, thiab tswj xyuas cov txheej txheem kos duab zoo, kev ua tau zoo thiab kev ua haujlwm zoo ntawm titanium alloy hlau tuaj yeem txhim kho kom tau raws li daim ntawv thov kev xav tau ntawm ntau lub teb.