Hauv kev lag luam aerospace, kev kho mob, tshuaj ua haujlwm, hluav taws xob, thiab cov khoom siv hluav taws xob siab- kawg kev lag luam, Titanium Sawb thiab Cold Rolled Titanium Chev yog cov khoom siv tsis tau zoo vim lawv qhov sib xyaw ua ke ntawm lub teeb yuag, kev tiv thaiv corrosion, biocompatibility, thiab thermal stability.
Txawm li cas los xij, thaum tsim cov nyias nyias - ntsuas kev lag luam ntshiab titanium sawb-tshwj xeeb ntawm cov tuab hauv qab 0.8 hli- cov neeg tsim khoom nquag ntsib qhov tsis tu ncua ntawm qhov chaw thiab cov duab tsis xws luag hu ua ribbing lossis coil ribbing. Qhov tsis xws luag no tuaj yeem txo cov khoom lag luam zoo, nce cov nqi seem, thiab ua rau muaj kev ua haujlwm ntau lawm, ua rau nws yog ib qho kev sib tw tseem ceeb tshaj plaws hauv precision titanium dov.
Dab tsi yog Ribbing hauv Titanium Sawb?
Ribbing yog hais txog thaj tsam ib puag ncig los yog tsa pawg uas tshwm rau saum npoo ntawm cov titanium coil tom qab winding.
Cov cheeb tsam tsa no feem ntau yog:
Pom pom ntawm qhov muag liab qab
Concentrated nyob rau hauv ib los yog ob peb nqaim bands
Feem ntau nyob rau hauv nyias titanium sawb (<0.8 mm)
Yooj yim los yog tsis yooj yim sua kom tshem tawm thaum lub sijhawm ua haujlwm qis
Nyob rau hauv lub ntiaj teb no manufacturing terminology, qhov teeb meem no kuj yuav raug xa mus rau raws li:
Rib Marking
Buckling Ridges
Localized Coil Bulging
Puab Instability
Axial Buckling Defect
Vim li cas Ribbing Matters: Tus nqi zais ntawm Titanium Sawb Defects
Ribbing tsis yog ib qho teeb meem tshuaj pleev ib ce xwb- nws cuam tshuam ncaj qha rau kev ua haujlwm thiab kev lag luam ntawm cov khoom siv titanium precision.
1. Degradation zoo
Ribbing feem ntau coexist nrog:
Ntug nthwv dej
Center buckles
Cov duab distortion
Nto waviness
Cov teeb meem no tuaj yeem ua rau tsis lees paub hauv siab - cov ntawv thov tshwj xeeb xws li:
Kev kho mob implants
Roj teeb tam sim no collectors
Aerospace Cheebtsam
Precision electronics
2. Khoom siv pov tseg
Ribbing hnyav yuav xav tau:
Slitting
Rov qab
Txiav
Ua kom tiav scrapping
Qhov no ua rau poob tseem ceeb ntawm cov khoom kim heev titanium raw khoom.
3. Kev ua haujlwm qis dua
Kev tshuaj xyuas ntxiv, kev txheeb xyuas, thiab rov ua haujlwm dua siv lub sijhawm siv lub tshuab muaj txiaj ntsig thiab txo cov rolling mill throughput.
4. Txo qhov tawm los thiab tau txais txiaj ntsig
Ntau qhov tsis xws luag ua rau:
Txo cov qoob loo tiav
Ntau tus nqi tsim khoom
Kev xa khoom qeeb
Txo kev sib tw hauv kev lag luam thoob ntiaj teb
Ob Qhov Tseem Ceeb Ua Rau Ribbing hauv Titanium Sawb Rolling
1. Kub- Rolled Feedstock Quality: Lub hauv paus ntawm kev ruaj ntseg
Kev sim ntau yam kev lag luam qhia tau hais tias txawm tias thaum txias dov tej yam kev mob tseem tsis hloov, ribbing zaus tuaj yeem sib txawv heev nyob ntawm qhov zoo ntawm cov khoom kub Rolled Titanium Coil.
Common Feedstock Defects
Nto khawb
Camber (riam-ntev sib txawv)
Ntug tawg
Local thickness siab me ntsis
Residual stress concentration
Local High Spots: Qhov Tseem Ceeb Tshaj Plaws
Cov me me hauv zos thickness sib txawv yuav tshwm sim tsis tseem ceeb, tab sis nyob rau hauv ultra- nyias titanium strip lawv tsim cov kev ntxhov siab uas pib hauv zos buckling thiab rib tsim.
Rau siab - cov khoom muaj tseeb xws li:
Titanium ntawv nyiaj
Kev kho mob Titanium Sawb
Roj teeb Qib Titanium Coil
Electronic titanium ntawv
nruj kub- yob zoo tswj yog qhov tseem ceeb.
2. Cov Txheej Txheem Txias Rolling Parameters: Qhov Tseem Ceeb Ua Haujlwm
Niaj hnub nimno titanium sawb ntau lawm siv advanced dov mills xws li:
6-High Mills
12-High Mills
20-High Sendzimir Mills
Txawm tias lub xeev - ntawm-- kos duab Japanese thiab European 20- cov mills siab muaj peev xwm ua tau 0.03-3.0 hli sawb tseem tuaj yeem muaj kev ribbing thaum ua cov coil hnyav thiab cov khoom siv dav dav.
Cov kev tshawb pom tseem ceeb los ntawm Cov Txheej Txheem Ua Haujlwm Zoo Tshaj Plaws
Cov duab tsis zoo Curves nce Ribbing
Thaum lub sij hawm dov tau theej ncaj qha los ntawm stainless hlau ntau lawm, qhov tshwm sim ntawm ribbing nce sharply.
High Tension tsis haum rau titanium
Tsis zoo li cov hlau tsis muaj steel, cov khoom lag luam ntshiab titanium muaj qhov qis dua elastic modulus thiab muaj zog txaus nyiam rau buckling nyob rau hauv axial load.
Customized Shape Control yog qhov tseem ceeb
Muab lub kaus mom, flatness, thiab yob-bending tsis yuav tsum tau tsim tshwj xeeb rau titanium sawb.
Mechanical Mechanism: Axial Buckling Instability
Lub hauv paus ua rau ribbing yog compressive stress-induced buckling.
Vim tias titanium muaj:
Lower Young's modulus dua hlau
Siab zog - rau - hnyav piv
Muaj zog anisotropy tom qab dov
nws dhau los ua rhiab heev rau cov uas tsis yog -txoj kev ntxhov siab ib yam.
Thaum axial compressive kev nyuaj siab tshaj qhov tseem ceeb buckling pib, localized bulges tsim thiab nyob twj ywm tom qab coiling.
Tus qauv lej ntawm Ribbing Instability
Qhov tseem ceeb buckling kev nyuaj siab ua raws li kev sib raug zoo:
Proportional rau plaub lub zog ntawm sawb thickness
Inversely proportional rau lub square ntawm sawb dav
Qhov no txhais tau hais tias txawm tias me ntsis txo qis hauv thickness ua rau txo qis tsis kam rau ribbing.
σcr∝b2t4
Qhov twg:
σcr\\sigma_{cr}σcr=Critical buckling stress
ttt=Sawb thickness
bb=Kab dav
Kev Siv Tau
