Kev thauj mus los hauv huab cua tau dhau los ua ib feem tseem ceeb ntawm peb lub neej niaj hnub-txawm yog los ntawm kev thauj khoom huab cua lossis kev mus los ntawm lub dav hlau. Thaum peb ntsia saum ntuj thiab saib cov dav hlau ya saum taub hau, ib lo lus nug ntuj tshwm sim:Cov ntaub ntawv dab tsi yog siv los tsim cov dav hlau uas tuaj yeem nqa tau cov khoom hnyav thiab ua haujlwm ntawm qhov siab?
Cia peb tshawb nrhiav cov ntaub ntawv tom qab lub peev xwm zoo kawg li no.
Txheej txheem cej luam ntawm Titanium
Xyoo 1948, DuPont tau ua tiav kev lag luam ntawm daim txhuam cev titanium siv cov txheej txheem txo magnesium, kos lub cim tseem ceeb hauv keeb kwm ntawm cov ntaub ntawv titanium. Txij thaum ntawd los, titanium alloys tau siv dav hauv ntau lub lag luam vim lawv lub cev zoo, suav nrogmuaj zog tshwj xeeb, zoo heev corrosion kuj, thiab superior kub kuj.
Tshwj xeeb tshaj yog, titanium yog ib qho tseem ceeb nyob rau hauv lub ntiaj teb crust, qeb duascuaj nyob rau hauv tag nrho abundance, deb tshaj ntawm cov hlau uas nquag siv xws li tooj liab, zinc, thiab tin. Nws yog dav faib nyob rau hauv ntau hom pob zeb, tshwj xeeb tshaj yog nyob rau hauv cov xuab zeb thiab av nplaum, qhov twg reserves yog heev loj.
Cov yam ntxwv ntawm Titanium
Titanium nthuav tawm ntau yam khoom tshwj xeeb, suav nrogsiab zog, siab thermal zog, zoo heev corrosion kuj, zoo heev tsawg-kub kev ua tau zoo, thiab muaj zog tshuaj lom neeg ua hauj lwm.
Tshwj xeeb, lub zog ntawm titanium nyob deb tshaj li ntawm aluminium alloys, magnesium alloys, thiab stainless hlau, ua rau nws yog ib qho ntawm cov qauv zoo tshaj plaws. Titanium alloys kuj ua tau zoo tshwj xeeb ntawm qhov kub siab, nrog rau kev ua haujlwm kub siab dua li cov aluminium alloys, thiab tuaj yeem tuav tau ntev - lub sijhawm ua haujlwm ntawm450-500 degree.
Tsis tas li ntawd, titanium qhia tau zoo heev tiv thaiv acids, alkalis, thiab atmospheric corrosion, tshwj xeeb tshaj yog muaj zog tiv thaiv.pitting corrosion thiab kev nyuaj siab corrosion cracking. Ntawm qhov kub thiab txias, titanium alloys xws liTSI 7khaws zoo ductility thiab mechanical zog, txawm nyob rau ntawm qhov kub thiab txias li tsawg li-253 degree.
Txawm li cas los xij, titanium nthuav tawm cov tshuaj lom neeg ua haujlwm siab ntawm qhov kub siab thiab tuaj yeem yooj yim hnov mob nrog cov pa roj xws li hydrogen thiab oxygen hauv huab cua, tsim cov txheej txheem tawv tawv. Tsis tas li ntawd, titanium alloys muaj cov thermal conductivity tsawg heev -kwv yees1/4 ntawm nickel, 1/5 ntawm hlau, thiab 1/14 ntawm txhuas-thaum lawv cov elastic modulus yog kwv yeesib nrab ntawm cov hlau. Cov yam ntxwv no ua rau titanium indispensable nyob rau hauv ntau yam advanced engineering daim ntaub ntawv.
Kev faib tawm thiab kev siv ntawm titanium alloys
Titanium alloys tuaj yeem raug cais raws li lawv daim ntawv thov rau hauvThaum tshav kub kub-resistant alloys, siab-lub zog alloys, corrosion-resistant alloys(xws li Ti-Mo thiab Ti-Pd alloys),low-kub alloys, thiabtshwj xeeb ua haujlwm alloys, suav nrog titanium-hlau hydrogen cia cov ntaub ntawv thiab titanium-nickel zoo nco alloys.
Txawm hais tias daim ntawv thov keeb kwm ntawm titanium alloys luv luv, lawv qhov kev ua tau zoo tau ua rau lawv muaj ntau qhov sib txawv, ib qho ntawm cov npe."space hlau."Qhov kev xaiv no yog los ntawm lawv lub teeb yuag, siab zog, thiab zoo heev -kub tsis kam, ua rau lawv zoo tagnrho cov ntaub ntawv rau aircraft thiab aerospace tsheb.
Tam sim no, kwv yees lipeb-quarters ntawm lub ntiaj teb no titanium thiab titanium alloy ntau lawm yog siv nyob rau hauv lub aerospace sector, nrog ntau yam khoom uas tau ua los ntawm txhuas alloys tam sim no tau hloov los ntawm titanium alloys.
Aviation Applications
Titanium alloys yog cov ntaub ntawv tseem ceeb hauv kev tsim dav hlau thiab cav. Lawv tau siv dav hauvforged kiv cua Cheebtsam, compressor disks thiab hniav, cav casings, tso systems, as well as structural Cheebtsam xws liframes thiab bulkheads.
Hauv kev siv aerospace, lub zog tshwj xeeb, kev tiv thaiv corrosion, thiab qis- qhov kub thiab txias ntawm titanium alloys ua rau lawv zoo tagnrho rauCov hlab ntsha siab, cov roj tso tsheb hlau luam, cov hlua khi, cov hlua khi, cov qauv tsim, thiab cov foob pob hluav taws. Titanium alloy daim ntawv weldments yog dav siv nyob rau hauvArtificial satellites, lunar modules, manned spacecraft, thiab chaw shuttles.
Xyoo 1950, Tebchaws Asmeskas thawj zaug siv titanium alloys rau lubF-84 foob pob tawg rog, siv lawv rau cov khoom tsis yog-load- cov kabmob xws li cov khoom siv hluav taws xob hauv qab, cov kav dej, thiab cov hlua khi. Pib xyoo 1960, titanium alloys tau nthuav dav los ntawm kev siv lub fuselage rov qab mus rau nruab nrab - lub fuselage, ib nrab hloov cov qauv hlau hauvbulkheads, beams, thiab flap lem.
Los ntawm xyoo 1970, nrog rau kev tsim khoom loj ntawm pej xeem aircraft xws liBoeing 747 ua, kev siv titanium nce ntau heev. Lub Boeing 747 ib leeg siv ntau dua3,640 kg ntawm titanium, accounting rau kwv yees li28% ntawm lub dav hlau tus qauv hnyav. Titanium alloys kuj tau siv dav hauv foob pob hluav taws, satellites, thiab dav hlau.
Machining yam ntxwv ntawm Titanium Alloys
Ua ntej, titanium alloys muaj cov thermal conductivity tsawg heev - tsuas yog hais txogib -quarter ntawm hlau, ib - kaum peb ntawm txhuas, thiab ib - nees nkaum- tsib ntawm tooj liab. Thaum lub sij hawm machining, kub dissipation thiab txias yog li inefficient, ua raukub kub concentrated nyob rau hauv tej cheeb tsam. Qhov no tuaj yeem ua rau workpiece deformation thiab elastic rov qab, ua rau kev txiav torque, ua kom cov cuab yeej ntug hnav, thiab txo cov cuab yeej lub neej.
Qhov thib ob, vim hais tias kev txiav cov cua sov yog concentrated nyob ze ntawm ntug txiav thiab tsis tuaj yeem tawg sai sai, kev sib txhuam ntawm lub ntsej muag rake nce, ua rau nti khiav tawm nyuaj thiab ntxiv cov cuab yeej ua kom nrawm dua.
Thaum kawg, ntawm qhov kub siab, cov tshuaj ua haujlwm ntawm titanium alloys nce ntau. Lawv nyiam hnov mob nrog cov khoom siv, ua rauadhesion, diffusion, thiab ua - nce ntug tsim. Cov phenomena no tuaj yeem ua rau cov cuab yeej tuav, hlawv, lossis tawg, cuam tshuam rau kev ua haujlwm zoo thiab ua haujlwm zoo.
Qhov zoo ntawm Machining Centers
Machining chaw tuaj yeem ua ntau yam khoom ib txhij, txhim kho kev ua haujlwm ntau lawm. Lawv qhov siab precision ua kom cov khoom zoo sib xws, thiab nrog cov cuab yeej them nyiaj ua haujlwm, qhov tseeb ntawm cov cuab yeej siv tshuab tuaj yeem siv tag nrho.
Machining chaw kuj muajmuaj zog adaptability thiab yooj, yooj yim tuav arc machining, chamfering, thiab fillet hloov. Ntau impressively, lawv txhawbntau-kev ua haujlwm, suav nrog milling, drilling, tho txawv, thiab tapping -tag nrho ntawm ib lub tshuab.
Los ntawm tus nqi- tswj qhov kev xav, cov chaw ua haujlwm tso cai rau kev suav nyiaj raug nqi thiab kev teem sijhawm tsim khoom, tshem tawm qhov xav tau rau cov khoom siv tshwj xeeb, txo cov nqi tag nrho, thiab txo cov voj voog ntau lawm. Lawv kujtxo kev siv zog ntau heevthiab tuaj yeem ua haujlwm seamlessly nrog CAM software xws liUG (NX)los ua ntau-axis machining.
Xaiv cov cuab yeej txiav thiab cov twj tso kua mis
Kev xaiv cov cuab yeej txiav tsim nyog thiab cov khoom ua kom txias yog qhov tseem ceeb thaum machining titanium alloys. Cov khoom siv cuab yeej yuav tsum nthuav tawmsiab hardness thiab hnav tsis kamlos xyuas kom meej cov khoom tshem tawm tau zoo. Kev xaiv cov coolant ncaj qha cuam tshuam rau kev ua haujlwm zoo thiab kev ua haujlwm zoo- cov khoom ua kom zoo txo qis kev sib txhuam thiab txiav cov cua sov, ua kom lub neej ntev thiab txhim kho kev ua haujlwm raug.
1. Cov Khoom Siv Khoom Siv Khoom Siv
Cov cuab yeej hardness yuav tsum tau siab dua li ntawm titanium alloys kom ua tau zoo txiav.
Cov cuab yeej yuav tsum muaj lub zog txaus thiab toughness kom tiv taus siab torque thiab txiav quab yuam.
Muab lub siab toughness ntawm titanium alloys, txiav npoo yuav tsum nyob twj ywm ntse; Yog li ntawd, kev hnav zoo heev yuav tsum tau ua kom txo qis kev ua haujlwm hardening.
2. Xaiv qhov kawg Mill Geometry
Vim yog qhov tshwj xeeb machining yam ntxwv ntawm titanium alloys, kawg zeb geometry txawv txav ntawm cov cuab yeej siv.
A lub kaum sab xis me me ( )tau pom zoo kom ua kom lub suab nrov nrov, txhim kho nti khiav tawm, thiab txhim kho cov cua sov dissipation.
3. Txiav Parameter xaiv
Thaum machining titanium alloys,qis txiav ceevyuav tsum tau siv, ua ke nrog cov nqi pub kom tsim nyog, tsim nyog txiav qhov tob, thiab tswj kev ua tiav cov nyiaj pub dawb.
4. Kev xaiv thiab daim ntawv thov Coolant
Cov coolants uas muaj chlorine yuav tsum raug zam kom tsis txhob tsim cov tshuaj lom thiab hydrogen embrittlement, nrog rau txo qhov kev pheej hmoo ntawm kev ntxhov siab corrosion ntawm qhov kub siab.
Nws raug nquahu kom sivdej hluavtaws-soluble emulsionslos yog tshwj xeeb formulated coolants haum rau titanium alloy machining.
