Daim ntawv thov ntawm Titanium Alloys nyob rau hauv lub teeb yuag Tsheb Manufacturing
Titanium thiab titanium alloys muaj cov yam ntxwv ntawm qhov tsis tshua muaj zog, zoo biocompatibility, kev kub siab kuj, thiab qhov muaj kub tsawg-kub. Lawv tau siv dav hauv kev tsim tsheb. Qhov ceev ntawm titanium alloy tsuas yog 60% ntawm cov hlau, thaum lub zog tuaj yeem ncav cuag ntau dua 800MPa. Nws tseem tuav tau zoo txhua yam khoom nyob ib ncig ntawm 500 degree, thiab muaj vuam zoo thiab tsim cov khoom. Nws tau siv nyob rau hauv kev tsim cov tsheb sib tw ntau tshaj 20 xyoo dhau los, txo qhov hnyav ntawm kev sib tw cav thiab txhim kho kev ua haujlwm ntawm lub cav.
Tam sim no, titanium alloy qhov chaw siv nyob rau hauv kev tsim tsheb yog tsuas yog muab faib rau hauv tsheb tso tsheb, cav tshuab, kis tau tus mob thiab kev co txo lub cev, thiab lub cev ntas.
1. Cov pa system
Cov ntaub ntawv ntawm lub tsheb tso tsheb yuav tsum muaj cov khoom siv hluav taws xob kub zoo thiab tsis kam tiv thaiv corrosion los ntawm S thiab Cl ntsiab. Ib txwm siv cov khoom siv hluav taws xob yog ua los ntawm cov hlau tsis muaj steel, tab sis tib neeg tau pom tias titanium alloys yog qhov tsim nyog rau kev siv los ua cov khoom siv valve hauv cov ntsiab lus ntawm kev ua haujlwm.
Lub titanium rov qab yeeb nkab siv nyob rau hauv lub tshiab Chevrolet Corvette Z206 zoo zam lub pitting thiab weld xeb teeb meem uas tshwm sim ntawm stainless hlau kav, thaum tseem txhim kho roj combustion efficiency thiab acceleration muaj peev xwm, thiab shortening braking nrug.
Timet, lub chaw tsim khoom loj tshaj plaws titanium hauv Tebchaws Meskas, tau cog lus rau kev tshawb fawb thiab kev tsim kho thiab tsim khoom ntawm titanium alloy tso tshuab. Ntau lub tuam txhab Nyij Pooj kuj tau ua cov haujlwm tshawb fawb thiab kev txhim kho. Tam sim no, Fuji Heavy Industries, Ltd. tau txwv ntau lawm ntawm 440 teeb ntawm titanium alloy automotive tso kav.
2. Cav qhov system
Lub tsheb cav system yog ib feem uas siv feem ntau titanium alloy nyob rau hauv lub tsheb teb. Daim ntawv thov ntawm titanium alloy nyob rau hauv lub cav system feem ntau muaj xws li li qub, txuas rods, crankshafts, valve rooj thiab lwm yam.
Honda Motor Corporation ntawm Nyiv siv forged titanium txuas rods hauv NSX sib tw V-6 cav; Mitsubishi Motors siv titanium valve caij nplooj ntoos hlav lub rooj zaum nyob rau hauv high-muaj peev xwm, plaub-lub tog raj kheej cav, thiab titanium txuas rods kuj siv nyob rau hauv Porsche tsheb.
(1) Valve
Hais txog titanium alloy li qub, Tebchaws Asmeskas thiab Nyij Pooj tau ua ntau txoj haujlwm tshawb fawb. Lub tebchaws United States tam sim no feem ntau siv Ti-6Al-4V alloy los ua kom cov valve thiab Ti-6Al-2Sn-4Zr-2Mo alloy los ua cov pa tawm; Thaum Toyota ntawm Nyij Pooj siv Ti-6Al-4V/Ti B alloy los ua kom cov valve thiab Ti-Al-Zr-Sn-Mo-Nb-Si/Ti B alloy los ua cov pa tawm. Cov hom titanium alloys no muaj cov khoom siv kub kub zoo, oxidation tsis kam thiab creep tsis kam, uas ua rau lub cav ua haujlwm tau zoo thiab ua kom lub tsheb ceev.
(2) Lub rooj zaum valve
Titanium alloy valve rooj zaum tau siv dav hauv cov tsheb sib tw thiab cov tsheb sib tw, nrog kev tsim khoom txhua xyoo ntau dua 250,000 teeb. Lawv feem ntau yog ua los ntawm Ti-6Al-4V lossis Ti-5Al-2Cr-1Fe alloy. Txij li cov duab ntawm lub rooj zaum valve yog qhov yooj yim, nws tsis tas yuav tsum muaj kev xav tau siab ntawm kev ua haujlwm thiab tsis xav tau kev kho tshwj xeeb. Nws yog qhov pheej yig thiab muaj txiaj ntsig zoo rau kev txo qhov hnyav ntawm lub tsheb.
(3) Cov hlua txuas
Kev siv cov titanium alloy txuas rods tuaj yeem txo qhov hnyav ntawm lub cav thiab txhim kho kev ua haujlwm ntawm lub tsheb. Cov khoom siv tseem ceeb yog Ti-6Al-4V alloy. Nyiv Daido Co., Ltd. tam sim no tab tom tsim ob-theem titanium alloy Ti-3Al-2V-0.2Si-0.47Ce-0.27La . Cov hlau no muaj kev ua haujlwm zoo thiab tseem zoo heev hauv cov khoom siv kho tshuab, qaug zog thiab corrosion kuj. Nws yuav tsum tau siv nyob rau hauv kev sib txuas pas nrig qhov chaw ntawm lub cav uas yuav tsum tau ceev acceleration thiab deceleration.
(4) Crankshafts
Txawm hais tias titanium alloy crankshafts tsis tau siv dav rau tam sim no, Ti-3Al-2.5V alloy tshwj xeeb tsim los ntawm Nyiv tau raug txheeb xyuas ntawm Honda cov tsheb sib tw. Thaum zoo txo qhov hnyav, nws tau nce lub cav ceev los ntawm 700r / min, ua pov thawj qhov zoo tshaj ntawm titanium alloy crankshafts. Nyob rau tib lub sijhawm, Nyiv tau sim tsim Ti-5Al-2Cr-Fe alloy crankshafts, vam tias titanium alloys yuav siv dav dua hauv crankshaft qhov chaw.
3. Kev co txo qhov system
Lub hauv paus tseem ceeb ntawm lub tsheb vibration txo qhov ncua kev kawm ntawv yog lub caij nplooj ntoos hlav ncua. Piv nrog rau cov tsheb caij nplooj ntoos hlav dav hlau, titanium alloy muaj lub zog tshwj xeeb dua thiab qis dua shear modulus, thiab lub zog qaug zog ntau dua, ua rau nws tsim nyog rau kev tsim tsheb poob siab-absorbing springs. Txij li thaum lub deflection ntawm lub caij nplooj ntoos hlav yog proportional rau tus naj npawb ntawm lem thiab inversely proportional rau lub shear modulus ntawm cov khoom, titanium alloy springs yuav tsum tau tsawg lem tshaj steel springs kom ua tau raws li lub caij nplooj ntoos hlav teb, zoo txo lub caij nplooj ntoos hlav loj thiab txuag chaw.
Nyob rau tib lub sijhawm, titanium alloy springs kuj tseem tuaj yeem ua kom lub zog resonant ntawm lub caij nplooj ntoos hlav thiab ua kom nws lub neej ua haujlwm. Tam sim no, feem ntau titanium alloy springs yog ua los ntawm ib-theem titanium alloy. Volkswagen tau siv Lupo FSI titanium alloy iav springs rau qee lub tsheb, nrog rau kev siv li ntawm 3,500 lub tsheb.
4. Lub cev ncej
Nyob rau hauv cov nqe lus ntawm lub cev thav duab Cheebtsam, titanium alloy lub siab dua lub zog, qis ntom thiab zoo corrosion kuj tag nrho qhia tau hais tias nws yog ib tug zoo khoom rau kev npaj lub cev ntas. Tam sim no, qee lub tuam txhab tsheb tau siv cov titanium alloys ntawm qhov chaw xws li iav brackets thiab nres caliper pistons. Ntawm cov kis tau tus mob, Nyiv tab tom tsim cov txheej txheem rau kev npaj titanium alloy plhaub los ntawm kev kub ceev spinning. Piv nrog cov plhaub hlau, titanium alloy plhaub tuaj yeem txo qhov cuam tshuam ntawm flywheels thiab muaj cov teebmeem zoo dua.
Tsis tas li ntawd, titanium alloys kuj tau siv rau hauv tsheb fasteners thiab lwm yam. Nrog kev txhim kho txuas ntxiv ntawm titanium alloy npaj thev naus laus zis thiab kev lag luam tsheb, titanium alloys yeej yuav siv ntau dua hauv cov tsheb.
5. Qhov tseem ceeb ntawm titanium alloys rau lub teeb yuag
Cov koom haum tshawb fawb txawv teb chaws tau suav tias thaum qhov hnyav ntawm lub tsheb txo qis los ntawm 10%, kev siv roj tuaj yeem txo los ntawm 6% mus rau 8%. Lwm cov kev tshawb fawb tau pom tias rau txhua txhua 91kg qhov hnyav txo, qhov nruab nrab lub tsheb tuaj yeem mus txog 0.43km ntxiv rau ib liter roj. Yog li ntawd, nrog kev txhim kho tas mus li ntawm kuv lub teb chaws txoj kev lag luam thiab kev nce ntawm cov tsheb tsis tu ncua, lub teeb yuag ntawm lub tsheb tau dhau los ua ib txoj hauv kev tseem ceeb los txo kev siv hluav taws xob thiab txo cov pa phem.
Titanium thiab titanium alloy cov ntaub ntawv tam sim no tau siv dav hauv cov khoom siv tsheb vim lawv lub cev zoo thiab tshuaj lom neeg. Kev siv cov ntaub ntawv titanium tsis yog tsuas yog txhim kho kev ua haujlwm thiab kev nyab xeeb ntawm lub tsheb, tab sis kuj tseem ua lub luag haujlwm tseem ceeb hauv kev ua kom lub cev hnyav, txo qhov hnyav ntawm lub tsheb thiab txo cov roj noj.
Piv nrog rau cov tsoos stainless hlau system, titanium tail nozzle-rov qab yeeb nkab sib dhos siv nyob rau hauv lub tsheb tso tsheb tuaj yeem txo qhov hnyav li ntawm 8.2kg. Kev siv cov khoom siv titanium alloy es tsis txhob siv cov hlau thiab cam khwb cia hlau cov khoom siv hauv lub cav xws li li qub thiab cov pas nrig txuas tuaj yeem txo qhov hnyav ntawm lub cav.
Raws li kev tshawb fawb hauv Japanese tsheb kev lag luam, kev siv li ntawm 0.8kg ntawm titanium qhov chaw nyob rau hauv lub hwj chim valve ntawm lub tsheb yog sib npaug rau cov nyhuv ua tiav los ntawm 20kg ntawm steel qhov chaw; txhua lub rooj zaum titanium tuaj yeem txo qhov hnyav li ntawm 10g piv nrog lub rooj zaum steel; Kev siv cov titanium alloy rau kev sib txuas rods thiab crankshafts yog qhov zoo tshaj plaws los txo qhov hnyav ntawm lub cav.
Hauv kev txo qis kev co, txhua lub caij nplooj ntoos hlav titanium alloy tuaj yeem txo qhov hnyav ntawm ntau tshaj 60% piv nrog lub caij nplooj ntoos hlav steel. Muab xam raws li 4 ncua kev ncua sij hawm rau ib lub tsheb, tom qab hloov lub caij nplooj ntoos hlav titanium alloy, txhua lub tsheb tuaj yeem txo qhov hnyav ntawm 9 ~ 13.6kg. Tsis tas li ntawd, qhov hnyav ntawm titanium alloy muffler tsuas yog 5 ~ 6kg, uas yog 40% sib dua li stainless hlau muffler.
Siv lub tsheb nruab nrab zoo ib yam li piv txwv, yog tias cov khoom siv titanium alloy uas twb muaj lawm tau siv los hloov cov khoom qub, lub tsheb qhov hnyav yuav raug txo los ntawm 1500kg txog li 1000kg, nrog rau qhov hnyav ntawm 30%, thiab Kev siv roj dav dav tuaj yeem raug txo los ntawm ntau dua 20%, uas yuav txo tau lub ntiaj teb cov roj siv tau zoo thiab txo cov teeb meem ntawm lub zog tsis txaus thiab ib puag ncig muaj kuab paug.
Cov ntaub ntawv saum toj no qhia tau hais tias kev siv cov titanium alloys muaj qhov cuam tshuam loj rau lub teeb yuag ntawm lub tsheb. Hauv kev lag luam tsheb niaj hnub no, daim ntawv thov thev naus laus zis ntawm titanium thiab titanium alloys hauv tsheb yuav tsum tau tsim kho txuas ntxiv kom nce daim ntawv thov piv ntawm titanium alloys hauv tsheb. Yog li ntawd, lub luag haujlwm tseem ceeb hauv lub neej yav tom ntej yuav tsum yog txo tus nqi ntawm titanium alloy qhov chaw los ntawm kev tsim cov khoom pheej yig titanium alloy cov ntaub ntawv thiab txo cov nqi ntawm titanium alloy raw cov ntaub ntawv, thiab txhim kho kev ua tau zoo ntawm titanium alloy qhov chaw los ntawm kev txhim kho cov txheej txheem technology. .
