Cov txheej txheem titanium hlau yog ib qho txheej txheem uas maj mam ncab titanium thiab titanium alloy billets rau hauv cov xov hlau zoo los ntawm ntau qhov kev tuag. Qhov no suab yooj yim, tab sis nyob rau hauv kev xyaum nws yog fraught nrog cov kev cov nyom, tiag tiag ib tug "mob quab yuam" nyob rau hauv lub tshav pob ntawm hlau ua. Titanium yog cov hlau uas muaj cov khoom zoo heev -lub zog siab, lub teeb yuag, thiab kev tiv thaiv corrosion-tab sis cov txiaj ntsig zoo no kuj ua rau muaj kev nyuaj rau kev ua haujlwm. Titanium muaj qhov tawv tawv zoo nyob rau hauv chav tsev kub, tab sis muaj kev tiv thaiv siab rau deformation, lub ntsiab lus nws yog "qhuav" heev thiab yuav tsum muaj zog ntau los hloov nws cov duab; Nyob rau tib lub sijhawm, nws yog cov tshuaj reactive, nkag siab nrog cov ntsiab lus xws li oxygen thiab nitrogen nyob rau hauv cov huab cua ntawm qhov kub thiab txias, ua rau nws nto ua nkig; Tsis tas li ntawd, nws nthuav tawm qhov tshwm sim tseem ceeb "ua haujlwm nyuaj", txhais tau tias nws nyuaj dua qhov nws tau kos, thiab tuaj yeem tawg ntawm qee qhov taw tes. Yog li ntawd, kos duab titanium hlau yog deb tsawg ncaj tshaj li kos tooj liab lossis hlau hlau; nws yog txheej txheem engineering txheej txheem kev sib xyaw tshuab, kev kho cua sov, thiab kev kho saum npoo.
Cov txheej txheem tseem ceeb ntawm tag nrho cov txheej txheem kev kos duab pib nrog kev npaj ntawm billet. Feem ntau, forged, dov, thiab nto- kho titanium alloy hlau rods yog siv los ua raw khoom, nrog ib txoj kab uas hla yuav yog ob peb millimeters. Thawj thiab cov kauj ruam tseem ceeb yog deg pretreatment. Qhov no yuav tsum tau ua kom huv si tshem tawm oxide nplai, roj, thiab qhov tsis xws luag siv cov txheej txheem los yog tshuaj lom neeg los tsim kom huv si, du nto. Txhua qhov kev tsis zoo yuav raug nthuav tawm thaum lub sijhawm kos duab tom ntej, ua rau cov hlau tawg. Tom ntej no yog daim ntawv thov ntawm ib tug lubricating txheej. Vim muaj kev sib txhuam siab ntawm titanium thiab tuag thiab nws txoj kev nyiam "lo", yuav tsum tau tsim kom muaj kev sib cais lubrication zoo. Ib txoj hauv kev yog phosphating los yog oxidation kev kho mob, uas ua rau ib tug ntxeem tau, heev nplaum conversion zaj duab xis ntawm titanium hlau nto. Cov yeeb yaj kiab no nws tus kheej txo qis kev sib txhuam thiab ua haujlwm zoo li "sponge," absorbing cov roj nplaum tom ntej thiab tsim cov yeeb yaj kiab ruaj khov thaum lub sij hawm kos duab.
Tom qab pretreatment, ntau- kis tau tus kab pib pib. Qhov huv, lubricated dawb paug yog kos thiab yuam los ntawm ib tug series ntawm carbide los yog pob zeb diamond tuag nrog me me apertures. Txhua qhov hla compresses txoj kab uas hla me ntsis. Qhov tseem ceeb ntawm no yog tswj qhov "pass txo tus nqi." Vim tias titanium ua haujlwm- hardens sai sai, ntau cov hlau tsis tuaj yeem kos rau hauv ib qho dhau los, txwv tsis pub nws yuav tawg vim qhov hnyav dhau. Yog li ntawd, ib qho kev tshawb fawb dhau los yog tsim nyog, feem ntau nrog txo tus nqi ntawm 10% thiab 20%. Qhov tseem ceeb tshaj, tom qab ob peb daim duab hla dhau, titanium hlau hardens thiab poob nws lub peev xwm los deform ntxiv, yuav tsum tau nruab nrab annealing. Annealing tshwm sim nyob rau hauv lub tshuab nqus tsev los yog inert gas{11}} tiv thaiv lub cub tawg kom tshem tawm kev ntxhov siab nyob rau hauv thiab rov qab kho cov khoom yas thiab toughness, ua rau nws haum rau daim duab tom ntej. Lub voj voog ntawm "kos duab-hardening-annealing-redrawing" yog rov ua ntau zaus kom txog thaum lub hom phiaj loj tiav. Tag nrho cov txheej txheem yuav tsum muaj kev tswj xyuas meej ntawm cov duab nrawm, lub kaum sab xis tuag, thiab cov cua txias kom txo tau cov cua sov thiab kev sib txhuam.
Thaum cov titanium xaim mus txog qhov xav tau kawg txoj kab uas hla los ntawm kev rov qab kos duab thiab annealing, cov txheej txheem tseem tsis tau tiav; tseem yuav tsum tau ua tiav. Qhov no suav nrog kev ncaj ncaj kom tshem tawm curl thiab kev ntxhov siab sab hauv, thiab qee zaum electropolishing los yog nqus cov annealing kom ua tiav qhov zoo nkauj heev, huv si nrog cov khoom zoo li qub. Tus nqi ntawm titanium hlau tsim los ntawm cov txheej txheem nruj no yog li pom tau. Nws yog dav siv nyob rau hauv siab -tech teb: nyob rau hauv kev kho mob kev lag luam, ultra- zoo titanium xov hlau yog zoo tagnrho cov ntaub ntawv rau sutures, kho hniav orthodontic nyob ntawm tej, thiab hlab plawv stents vim lawv zoo heev biocompatibility; nyob rau hauv aerospace, titanium xov hlau yog woven rau hauv meshes rau composite khoom reinforcement los yog thermal rwb thaiv tsev txheej; nyob rau hauv chemical thiab marine engineering, nws yog siv los weave corrosion-cov ntxaij lim dej resistant; thiab hauv siab-cov khoom siv kawg, nws yog siv rau hauv cov iav tsom iav, cov hniav nyiaj hniav kub, thiab cov khoom ua si. Nws tuaj yeem hais tau tias txhua qhov yob ntawm cov hlau tsis muaj zog titanium embodies lub tswv yim ntawm cov ntaub ntawv niaj hnub no, yog ib qho piv txwv zoo tshaj plaws ntawm taming ib tug rebellious hlau rau hauv precision khoom pab tib neeg txoj kev txiav -ntev xav tau.
