Tebchaws Asmeskas thiab Fabkis tau txais cov khoom siv superplastic los ua cov txheej txheemtitanium ntawv cithermal rwb thaiv tsev daim hlau,
Txawm li cas los xij, cov txheej txheem tuaj yeem tsim cov khoom siv hluav taws xob zoo, nws muaj lub voj voog ntau lawm, cov khoom ua haujlwm nyob rau hauv qhov kub thiab txias rau lub sijhawm ntev, uas yuav nqus cov pa ntau dua los yog tsawg dua, Titanium tsis muaj peev xwm antioxidant siab dua 649. ℃, nws yuav nqus cov pa ntau dua thiab ua nkig, ua rau tag nrho nws cov khoom siv kho tshuab poob qis. Tsis tas li ntawd, superplastic forming yog tsim rau kev npaj workpieces nrog cov duab yooj yim. Rau cov complex workpieces qhia nyob rau hauv daim duab, superplastic forming yog heev nyuaj, vim hais tias nws yog tsis yooj yim sua rau txheej txheem pwm.
Txij li thaum lub tshav kub tiv thaiv yog tsim los ntawm diffusion vuam, cov ntsiab lus ntawm cov pa oxygen yuav tsum raug tswj kom raug thiab nruj me ntsis, yog li nws yog qhov zoo tshaj plaws rau vuam hauv lub tshuab nqus tsev vacuum, tab sis nws yuav tsum tau siv cov khoom kim heev, uas ua rau kev nqis peev thiab kev ua haujlwm nyuaj.
Cov kws tshawb fawb tau pom zoo tias qhov tsim nyog tus nqi qis, ua haujlwm zoo, thiab ua haujlwm siabtitanium ntawv ciaircraft tshav kub rwb thaiv tsev vaj huam sib luag tau ua tiav tiav los ntawm kev siv semi coupling tuag thiab cladding txheej txheem tiv thaiv. Cov nyhuv tau zoo thiab qhuas los ntawm cov neeg siv.
Thaum lub sij hawm tsim khoom, TB2 alloy foil yog thawj zaug muab tso rau hauv lub plhaub, cov pa oxygen hauv lub plhaub tau muab tshem tawm ua ntej kub sib sau, uas tuaj yeem raug tshem tawm los ntawm cov qauv siv lub tshuab nqus tsev, thiab lub hnab ntim tau kaw tom qab nqus. Cov teeb meem hauv qab no yuav tsum tau them sai sai rau thaum siv jacketing Technology:
Ua tib zoo ntxuav cov greasy av thiab sundries nyob rau saum npoo ntawm daim ntawv titanium thiab pob, thiab xyuas kom huv si;
nruj me ntsis xaiv cov ntaub ntawv cladding, uas yuav tsis xau nyob rau hauv qhov kub thiab txias thiab yuav tsis emission tej pa roj. Cov ntaub ntawv uas muaj qhov kub thiab txias zog yuav tsum tau xaiv kom deb li deb tau, thiaj li yuav txo tau qhov deformation kuj, txhim kho lub neej kev pab cuam ntawm cov tuag thiab xyuas kom meej qhov seem ntawm qhov workpiece;
Ib txheej nyias thiab nyias txheej ntawm flux nres yuav tsum tau coated rau ntawm lub sheath kom tsis txhob welding ntawm lub sheath thiabtitanium ntawv ci, tab sis lub flux nres yuav tsum tsis txhob tso cov pa phem ntawm qhov kub thiab txias thiab yuav tsum tsis txhob muaj cov khoom xws li dej thiab kua nplaum.
Cov ntaub ntawv npaj yuav tsum tau tsim ntawm 750 ℃, lub siab yuav tsum tsis txhob siab dhau, thiab nws yuav tsum tau preheated rau 1min-2min, tswj lub siab rau 20s-30s, tshem tawm lub pob, thiab workpiece tom qab txias. Lub ci ci ntawm qhov chaw ua haujlwm yuav luag zoo ib yam li cov ntawv ci qub. Cov txiaj ntsig ntsuas tau pom tias cov pa oxygen hauv txheej txheej yog tsawg dua 200 ppm, thiab lub thickness ntawm cov oxide txheej tsis hloov. Nws tuaj yeem pom tias cladding tsis tsuas yog tiv thaiv lub workpiece los ntawm kev ua qias tuaj, tab sis kuj tseem ua rau feem ntau ntawm qhov tsis sib xws, uas txhim kho qhov sib txawv ntawm cov khoom ua haujlwm, qhov ntsuas thickness ntawm lub deformed workpiece yog 0.067mm-0.072mm, uas yog tag nrho. nyob rau hauv lub thickness sib txawv ntau ntawm cov ntawv ci qub.
