Daim Ntawv Thov Tsim Ntawm Titanium Alloy Caij Nplooj Hlav Rau Locomotive
High-strength titanium alloy yog ib qho ntawm cov khoom siv zoo tshaj plaws rau kev npaj cov aviation springs. Thawj daim ntawv thov ntawm titanium alloy springs pib xyoo 1970, thaum McDonnell Douglas siv Ti-13V-11Cr-3Al alloy springs hauv DC-10 dav-lub cev dav hlau, feem ntau nyob rau hauv lub qhov ntswg thiab lub ntsiab landing lock springs, nrog rau elevator thiab aileron tswj springs.
Xyoo 1971, RMI tau tsim Beta-C (TB9) metastable titanium alloy. Ntxiv nrog rau lub zog siab thiab tsis tshua muaj modulus, cov hlau tseem muaj cov khoom ua haujlwm txias txias thiab tuaj yeem npaj tau yooj yim rau hauv lub caij nplooj ntoos hlav hlau. TB9 titanium alloy maj mam hloov cov txheej txheem nyuaj Ti-13V-11Cr-3Al alloy thiab tau siv los ua lub caij nplooj ntoo hlav tshuav rau lub qhov rooj ntawm lub dav hlau nqaim Boeing 757. , txo qhov hnyav txog li 66.6%. Tom qab ntawd, TB9 titanium alloy springs kuj tau siv rau ntawm Boeing 777, Airbus A330, A340 thiab lwm yam qauv.
Ntxiv nrog rau kev lag luam aviation, titanium alloys kuj muaj ntau yam zoo thiab daim ntawv thov piv txwv hauv locomotive springs. Ua ntej, titanium alloy muaj kev tiv thaiv corrosion zoo heev, uas tuaj yeem txo cov txheej txheem tiv thaiv corrosion, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig hnyav, thiab tuaj yeem ua kom muaj kev ruaj ntseg ntev ntawm cov springs thiab txo cov nqi kho tsheb. Qhov thib ob, qhov ceev ntawm titanium alloy tsuas yog kwv yees li 60% ntawm cov hlau, thiab cov elastic modulus thiab shear modulus ntawm titanium alloy yog li ntawm ib nrab ntawm cov hlau. Tus naj npawb ntawm cov coils xav tau rau kev tsim cov titanium springs tsuas yog ib nrab ntawm cov steel springs, yog li qhov theoretical qhov hnyav tuaj yeem ncav cuag li 70%. Raws li qhov tseeb load thiab sib dhos yuav tsum tau ntawm locomotive springs, kev siv titanium alloy springs tuaj yeem txo qhov hnyav los ntawm 40% ~ 60%. Lub caij nplooj ntoos hlav qhov hnyav txo tsis tau tsuas yog txuag lub zog thiab ua kom lub tsheb lub mileage, tab sis kuj pab txhim kho qhov yooj thiab tuav lub tsheb.
Tsis tas li ntawd, titanium alloy springs kuj muaj cov yam ntxwv zoo damping. Tsawg zog yuav tsum tau rau acceleration thiab deceleration thaum lub zog. Qhov hnyav dua lossis tsawg zog tuaj yeem ua rau elastic deformation, ua rau lub zog hauv qab load smoother thiab tswj tau ntau dua. Tam sim no, ntau lub tsheb kauj vab thiab tsheb kauj vab siv nruab nrab lub zog titanium alloy (TC4) springs los hloov steel springs, feem ntau vim yog cov yam ntxwv zoo damping ntawm titanium alloy springs, uas txhim kho kev nplij siab nyob rau hauv txoj kev bumpy.
Nyob rau tib lub sijhawm, muaj ntau cov ntsiab lus uas yuav tsum tau them sai sai rau hauv kev tsim cov titanium alloy springs. Piv txwv li, tam sim no lub caij nplooj ntoos hlav tsim qauv GB / T 23935-2009 "Tsim thiab xam ntawm Cylindrical Helical Springs" yog tsom rau cov hlau springs, thiab lub caij nplooj ntoos hlav helix lub kaum sab xis ntawm 5 degree mus rau 9 degree . Txawm li cas los xij, titanium alloy springs muaj qis elastic modulus thiab shear modulus, me me ntawm cov coils zoo, thiab lub kaum sab xis uas feem ntau ntau dua 9 degree. Cov qauv uas twb muaj lawm thiab cov qauv kev suav tsis tuaj yeem ua tau raws li cov qauv tsim ntawm titanium alloy springs, thiab cov qauv kev ntsuas nruj yuav tsum tau hloov kho.