Qhov zoo ntawm titanium alloy cov ntaub ntawv rau kev siv fastener

Fasteners raws li ib qho tseem ceeb ntawm cov hauv paus ntsiab lus, muaj lub luag haujlwm tseem ceeb hauv kev lag luam, hu ua "mov ntawm kev lag luam". Tuam Tshoj tus naas ej ARJ21-700 aircraft tus thawj coj tsim qauv Mr. Wu Guanghui kuj qhuas cov fasteners "ntau txhiab tus, chav kawm rau pab pawg, kev sib txuas qauv, kev sib txuas, cov khoom me me rau qhov loj.

Nrog rau txoj kev loj hlob ntawm Tuam Tshoj txoj kev lag luam aerospace, lub dav hlau tshiab thiab qhov chaw tsheb siv cov theem ntawm kev sib txuas thev naus laus zis txuas ntxiv txhim kho, cov fasteners tshiab kuj tau muab cov kev xav tau tshiab, ultra-high-strength titanium alloy fasteners yog ib qho ntawm cov qauv ntawm kev txhim kho yav tom ntej.
Titanium alloy cov ntaub ntawv siv rau hauv fasteners muaj qhov zoo hauv qab no: (1) me me ntom. Qhov ntom ntawm titanium alloy yog qhov tsawg dua qhov ntom ntawm cov ntaub ntawv hlau, yog li titanium alloy fasteners yog sib dua li cov hlau fasteners. (2) Lub zog tshwj xeeb. Titanium alloy yog cov khoom siv hlau uas muaj zog tshwj xeeb. Siv qhov zoo ntawm lub zog tshwj xeeb, titanium alloy kuj tuaj yeem siv los hloov cov khoom sib zog ntawm cov khoom siv aluminium alloy, thaum lub load sab nraud yog tib yam, titanium alloy qhov chaw ntawm cov geometry ntawm cov me, tuaj yeem txuag tau qhov chaw, siv cov lub tswv yim ntawm cov ntaub ntawv no rau aerospace teb muaj ib qho tseem ceeb heev. (3) Siab melting point. Lub melting point ntawm titanium alloy yog ho siab dua cov hlau, yog li lub tshav kub tsis kam ntawm titanium alloy fasteners yog zoo dua li cov hlau fasteners. (4) Lub coefficient ntawm thermal expansion thiab modulus ntawm elasticity yog me me. Lub coefficient ntawm thermal expansion thiab modulus ntawm elasticity ntawm titanium alloy cov ntaub ntawv yog me dua npib tsib xee alloy thiab steel cov ntaub ntawv, nyob rau hauv tib lub kub hloov lub sij hawm, titanium alloy ua me me thermal stress, yog li titanium alloy muaj siab thermal qaug zog kev kawm. (5) Tsis-magnetic. Qhov sib nqus permeability ntawm titanium alloy yog me me, yuav luag tsis pom zoo, yog li titanium alloy fasteners tsis yog hlau nplaum, tuaj yeem tiv thaiv kev cuam tshuam ntawm magnetic teb. Austenitic stainless hlau kuj tsis yog sib nqus, tab sis tom qab ua haujlwm txias yuav ua rau nws cov khoom sib nqus, thiab titanium alloy kub lossis txias ua haujlwm tsis hloov nws cov khoom sib nqus, uas ua rau titanium alloy tuaj yeem siv rau hauv cov khoom siv avionics. (6) siab yield ratio. Fasteners raug rau tensile load tsim lub zog tseem ceeb tus qauv yog lub zog tawm los, ua raws li lub zog tensile, vim hais tias ib zaug lub fastener tawm los deformation, yuav plam cov nyhuv fastening. Piv nrog cov ntaub ntawv hlau, titanium alloy yield zog thiab tensile zog ze rau lub zog tawm los yog siab dua, yog li cov titanium alloy fasteners muaj kev nyab xeeb dua. (7) Electrode muaj peev xwm sib tw nrog carbon fiber ntau. Nyob rau hauv fasteners, titanium alloy yog siv nyob rau hauv ib tug loj tus naj npawb ntawm cov laj thawj tseem ceeb yog titanium alloy electrode muaj peev xwm thiab carbon fiber composite cov khoom electrode muaj peev xwm txuam, zoo tiv thaiv qhov tshwm sim ntawm galvanic corrosion. (8) Tsis tas li ntawd, titanium alloy kuj muaj kev tiv thaiv corrosion zoo heev, siab creep kuj thiab lwm yam zoo.