1. 1 J36 thiab 6J20 yog ob qho tib si Suav {{}} cov qauv tsim kho kom meej. Lawv txoj kev faib ua haujlwm hauv kev ua haujlwm ntawm kev ua haujlwm ntawm kev ua haujlwm thiab cov yam ntxwv tseem ceeb yog dab tsi?
These two alloys belong to distinct categories of precision alloys, each engineered for a specific physical property rather than mechanical strength or corrosion resistance.
1J36: Ib qho kev nthuav dav heev alloy (invar - hom)
Lub Luag Haujlwm Ua Haujlwm: Txhawm rau nthuav tawm qhov qis heev, thiab qee zaum ze -60 xoom, coeeffic of thermal exphale (feem ntau los ntawm txog li -60℃rau 150 degree).
Cov yam ntxwv tseem ceeb: Cov cuab yeej tshwj xeeb no, hu ua "qhov cuam tshuam ntawm nws muaj kev sib xyaw {}}}}}}} Nickel thiab cov sib npaug hlau. Nyob rau ntawm cov ntsiab lus no tshwj xeeb cov ntsiab lus, cov khoom siv lub ntuj nyiam nthuav dav nrog kev sib hloov ntawm cov cua sov los ntawm kev hloov pauv ntawm cov khoom siv.
Lwm cov khoom: Nws muaj lub zog nruab nrab, ductility ductility, thiab kev tsis zoo corrosion tsis kam.
6j20: ib qho kev hloov pauv tsis tu ncua (Elinvar - hom)
Lub Luag Haujlwm Ua Haujlwm: Txhawm rau kom muaj kev sib luag tas li (Elastic) modulus dhau ntawm qhov kub ntau. Qhov no txhais tau tias nws lub cev txhav txhav, lossis tiv taus Elastic deformation, tsis hloov pauv nrog kub.
Cov yam ntxwv tseem ceeb: Qhov "tas li modulus nyhuv" tau ua tiav los ntawm cov kab uas muaj tsib xee, cov chromium, titanium, thiab qee zaum tungsten. Lub alloy yog tsim kom cov kev txo qis hauv cov mapulity elastic nrog nce kub yog them nyiaj rau los ntawm kev ntxiv dag zog nag lossis daus.
Lwm cov khoom: Nws tseem muaj lub zog zoo, nkees tsis kam, thiab feem ntau yog siv hauv kev mob tawv thiab tembrented.
Hauv cov ntsiab lus, koj xaiv 1j36 los tswj kev hloov pauv qhov seem nrog qhov kub thiab txias, thiab koj xaiv 6J20 kom tswj tau txhav nrog kub.
2. Hauv qhov kev thov tshwj xeeb yuav muaj xwmfab hlab lossis lwm cov qauv qauv qauv tsim los ntawm 1j36 thiab 6J20 yuav tsum ua?
Kev siv cov ntaub ntawv no hauv cov kab square lossis lwm cov qauv qauv tshwj xeeb yog tsav los ntawm qhov xav tau tshwj xeeb ruaj khov nyob rau hauv cov twj paj nruag uas rhiab thiab tshuab.
Cov ntawv thov rau 1j36 (qis nthuav dav) square hlab / thav ntawv:
Cov txheej txheem precision thav ntawv: lub moj khaum rau laser cuam tshuam, kho qhov muag ntsuas muag lub cav, thiab lub tsom iav tsom iav ua haujlwm feem ntau yog tsim los ntawm 1j36 square dres. Qhov no ua kom ntseeg tau tias qhov kev sim siab tseem ceeb ntawm cov khoom siv kho kho kho qhov muag (lasers, iav) nyob twj ywm tas li ntawm qhov kub thiab qhov pom tseeb qhov tseeb.
Duab ntxoov ntxoo daim npog ntsej muag nyob rau hauv cov xim Crt cov lus qhia: txawm hais tias ib daim ntawv thov lev, nws yog keeb kwm ib ntawm cov kev siv loj tshaj plaws rau 1j36. Daim npog ntsej muag nyias, perforated daim npog tau yuav tsum tau tswj cov txheej txheem zoo tag nrho nrog lub vijtsam phosphors thaum lub sijhawm hluav taws xob. Ib lub voj voos xwmfab ntawm 1j36 tej zaum yuav siv los tuav lub npog ntsej muag nyob rau hauv qhov chaw.
Lng Thauj & Cia: Thaum tsis yog ib qho kev pab cuam sab nrauv thiab cov raj roj tso rau hauv -162 degree, qhov twg nws cov CTE tsawg tiv thaiv kev ntxhov siab ntawm thermal thiab buckling.
Cov ntawv thov rau 6j20 (constant modulus) cov qauv txheej txheem:
Siv cov diav rawg thiab cov resonators nyob rau hauv precision sij hawm: tus resonant zaus ntawm ib qho kev tivthaiv ib feem yog ua haujlwm ntawm nws cov geometry thiab Elastic Modulus. Los ntawm kev siv 6j20, qhov zaus tseem nyob ruaj khov tsis hais txog qhov ntsuas kub ib puag ncig, uas yog qhov tseem ceeb rau cov moos, saib, thiab cov lim dej hauv hluav taws xob.
Siab - precision sensor springs thiab diaphragms: hauv kev ntsuas siab, ntsuas hluav taws xob, qhov kev sib raug zoo ntawm kev quab yuam thiab kev hloov pauv nrog kub. Springs thiab hnov cov ntsiab ua los ntawm 6j20 square hlau lossis machjali hlau lossis machjali hlau lossis tshuab los ntawm bar Tshuag muab qhov tseem ceeb no.
Cov khoom siv tseem ceeb hauv kev taw qhia ntawm Aerospace: Siv cov txheej txheem gyroscounes uas muaj kev hloov pauv ntawm lub zog txhav nrog qhov kub thiab txias yuav ua rau muaj kev kub ntxhov thiab kev ua txhaum.
3. Dab tsi yog qhov tseem ceeb tsim thiab tshuab kev txiav txim siab rau cov txheej txheem ua kom haum los ntawm 1j36 thiab 6j20?
Machining thiab ua kom cov alloys tau muaj cov tswv yim tshwj xeeb los khaws lawv cov khoom noj cov khoom siv ua haujlwm ua kom zoo nkauj, uas rhiab rau sab hauv kev ntxhov siab thiab microstructure.
1J36 (qhov nthuav tawm tsawg) {- qhov tseem ceeb ntawm kev ntxhov siab:
Machining Sib tw: Txhua yam txias txias - xws li txiav, lossis dabtsi yog qhia txog kev ntxhov siab sab hauv. Cov kev ntxhov siab no tuaj yeem ua rau ib feem rau warpThaum Lub TshuabThiab, ntau dua kev ua yeeb yam, ua rau tsis muaj kev hloov pauv thiab muaj kev hloov pauv tas mus li tom qab thaum cov khoom siv tau yooj yim dua thiab kub hloov.
Mitigation Lub Tswv Yim:
Kev ntxhov siab - pa annealing yog qhov yuav tsum tau ua: tom qab siv cov kauj ruam tseem ceeb lossis cov kauj ruam stabilization, Qhov no cuam tshuam nrog cov cua kub rau ib qho kub tshaj nws qhov kev pabcuam kub thiab txias (feem ntau 155-325 Qib, ua raws li cov cua txias qeeb (piv txwv li, cua sov txias).
Process Sequence: A typical workflow is: Rough Machine -> Stabilization Anneal -> Final Precision Machine (with very light cuts) ->Thaum kawg stabilization aneal.
Siv cov cuab yeej ntse, maj nrawm nrawm, thiab kuv txias kom txo cov kev taw qhia kev ntxhov siab.
6j20 (constant modulus alloy) - qhov kev xav tau ntawm kev kho cua sov:
Machinet sib tw: cov khoom siv tas li yogtsisxam cov; Nws yog muab los ntawm ib qho kev kho kom sov thiab kho kom zoo. Lub alloy yog feem ntau muab rau hauv kev daws - Annaled State, uas yog mos thiab tsis muaj qhov txuas tas mus li {{modulus.
Mitigation Lub Tswv Yim:
Thaum kawg kev kho cua sov yog tsis - sib ceg: tom qab siv tag nrho, cov khoom siv yuav tsum tau dhau los, kev kho mob} kev kawm. Qhov no cuam tshuam nrog cov cua sov kom muaj qhov kub tshwj xeeb (piv txwv li, 550-650 degree) rau lub sijhawm zoo rau precipual zoo hais uas ruaj khov kho modulus.
Machining hauv lub xeev mos: Txhua qhov hnyav thiab kawg machining {{}}}}}}}} Cov khoom siv dhau los ua kev laus.
Kev hloov pauv hauv qhov siab: Cov laus ua rau nws tus kheej ua rau muaj kev hloov me ntsis tab sis nrhiav tau qhov hloov pauv ntawm qhov kev hloov pauv ntawm qhov kawg.
4. Lub tshav kub kho cua sov txhais tau li cas cov khoom ua haujlwm kawg ntawm 1j36 thiab 6J20?
Kev kho cua sov yog cov kauj ruam uas "xauv rau hauv" lossis "activates" cov cuab yeej tseem ceeb ntawm txhua tus alloy.
1J36 Kev Kho Mob Cua Sov: stabilization rau kev ncaj ncees sab nraud
Cov txheej txheem: Kev kho mob tseem ceeb yog kev ntxhov siab - kev pab lossis stabilization endeal, raws li tau piav qhia saum toj no, ntawm ib nrab kub (275-325 Qib). Ib qho kub dua anal (~ 830 degree) yuav siv tom qab txias txias ua haujlwm rau recrystallize cov qauv nplej, tab sis qhov no yuav tsum tau ua raws cov stabilization aneal.
Lub Hom Phiaj: Lub hom phiaj yog los daws kev ntxhov siab sab hauv yam tsis tau hloov kho cov qauv grain lossis cov tseem ceeb heev {{CTE cov cuab yeej. Los ntawm kev hloov pauv cov kev ntxhov siab no, cov khoom siv qhov ntev ua ruaj khov, thiab nws ultra- Txoj Cai CTE tuaj yeem ua rau muaj kev pheej hmoo siab.
6J20 Kev Kho Cua Sov: Precipitation harchening rau ruaj khov
Txheej Txheem: Qhov no yog ob -}} kauj ruam txheej txheem:
Kev Kho Mob: Ua kom sov rau qhov kub thiab txias (piv txwv li, 1000 degree) thiab quench sai. Qhov no yaj tag nrho cov alloying ntsiab (CR, thiab lwm yam) rau hauv cov kev daws teeb meem zoo, ua rau muaj lub xeev muag muag, machinable.
Kev laus (nag lossis kub ua kom kub kub): cua sov rau ib nrab ntawm kub (piv txwv li, 600-650 degree) rau lub sijhawm ua kom meej (piv txwv li 4 teev) thiab tom qab ntawd cua txias. Qhov kev kho mob no ua ntej muaj zog ua ntej zoo, sib txuam, xws li, raws li ni₃ti).
Lub Hom Phiaj: Cov precipitates no yog tus yuam sij rau cov khoom siv tsis tu ncua. Lawv ntxiv dag zog rau cov matrix thiab, lawv yog muaj peev xwm ua tau zoo rau cov kev txo qis ntawm cov modulix loj ntawm lub matrix ua kom sov. Lub sij hawm meej thiab ntsuas kub ntawm kev laus yog ntsuas kom ua tiav ib qho zoo kawg nkaus e {{modulus vs. qhov kub nkhaus dhau ntawm cov ntau yam.
5. Tus kws ua choj yog tsim lub siab - precision chaw {2} raws kho qhov muag platform. Thaum twg lawv yuav qhia tau 1j36 square raj ncej, thiab thaum twg yuav ib feem yuav ua los ntawm 6j20?
Qhov kev xaiv no raug sau tseg los ntawm seb tus yam tsis ua hauj lwm hom yog qhov seem drift lossis hloov pauv hauv resonant zaus (txhav.
Qhia kom meej 1j36 square raj ncej thaum:
Lub kaw lus kev ua tau zoo los ntawm thermal drift nyob rau hauv ib txoj kev sib ncag lossis txoj haujlwm.
Piv txwv li scenario: lub rooj tog zaum ntawm lub rooj ntev. Tag nrho lub moj khaum tuav lub iav tsom iav, lo ntsiab muag, thiab sensors yuav tsim los ntawm 1j36 square tubes thiab welded / brazed daim hlau. Raws li lub satellite orbits, nws tau ua dhau los ua neeg caij tsheb kauj vab heev, tsiv los ntawm kev tshav ntuj ncaj qha mus rau lub ntiaj teb. Ib qho kev sib dhos ua ke tus ncej yuav nthuav dav thiab cog lus ua kom pom tseeb, ua rau txoj kev kho qhov muag rau misalign thiab plooj cov duab lossis ua tsis ncaj cov ntaub ntawv. Lub 1j36 ncej saib xyuas nws qhov ntev kawg, ua kom lub qhov muag kho qhov muag nyob hauv cov txheej txheem zoo nkauj, lav lub hom phiaj kev tshawb fawb lossis kev xav.
Qhia kom meej rau 6j20 tivthaiv thaum:
Lub kaw lus txoj kev kawm tau txwv los ntawm thermal drift hauv zaus lossis ntsuas ntshav ntawm lub zog hloov.
Piv Txwv 1: Kev sib cais kev rho tawm. Lub platform kho qhov muag siv tau siv cov kab ke ntawm springs thiab cov dampers kom cais nws ntawm satellite vibrations. Yog tias cov kab tsuag no tau ua los ntawm cov qauv hlau, lawv cov tawv ncauj (lub caij nplooj ntoos hlav tas li) yuav hloov nrog qhov ntsuas kub, hloov pauv cov zaus ua haujlwm ib zaus thiab ua rau nws tsis zoo. Ib qho 6J20 lub caij nplooj ntoo hlav yuav tswj tau ib qho txhav tas mus li, kom muaj kev sib cav sib ceg sib cais kev ua tau zoo thoob plaws hauv lub orbit.
Piv txwv li scenario 2: ib tug resonant sensor. Yog hais tias lub platform siv ib qho kev sib tw - Diav Rawg {} Txoj kev ua si lossis ib tus neeg muaj lub zog tseem ceeb tshaj plaws yog qhov tseem ceeb. Lub 6J20 Resonator yuav tswj tau lub sijhawm ruaj khov, tiv thaiv qhov kub thiab txias- Ua rau calibration khiav tawm hauv lub sensor nyeem.
