Muaj ntau yam los xav txog hauv machining qhov chaw rau kev siv aerospace, xws li ib feem zoo, qhov hnyav thiab kav ntev.Cov xwm txheej no yuav cuam tshuam rau kev nyab xeeb thiab kev lag luam ntawm lub dav hlau.Cov khoom ntawm kev xaiv rau aerospace manufacturing yeej ib txwm yog txhuas raws li lub ntsiab kub.Hauv cov dav hlau niaj hnub, txawm li cas los xij, nws tsuas yog 20 feem pua ntawm tag nrho cov qauv.
Vim muaj kev xav tau ntau ntxiv rau lub dav hlau lub teeb, kev siv cov khoom sib xyaw xws li carbon-reinforced polymers thiab honeycomb cov ntaub ntawv yog nce hauv kev lag luam aerospace niaj hnub no.Aerospace manufacturing tuam txhab uas muag tab tom pib tshawb nrhiav lwm txoj rau txhuas alloys-aviation-qib stainless hlau.Qhov feem ntawm no stainless hlau nyob rau hauv tshiab aircraft Cheebtsam yog nce.Cia peb txheeb xyuas qhov kev siv thiab qhov sib txawv ntawm aluminium alloys thiab stainless hlau nyob rau hauv niaj hnub aircraft.
Kev siv ntawm aluminium alloy qhov chaw hauv aerospace teb
Txhuas yog cov khoom siv hlau hnyav heev, hnyav txog 2.7 g / cm3 (grams ib cubic centimeter).Txawm hais tias aluminium yog sib dua thiab tsis tshua kim tshaj stainless hlau, aluminium tsis muaj zog thiab corrosion resistant li stainless hlau, thiab tsis muaj zog thiab corrosion resistant li stainless hlau.Stainless hlau yog superior rau txhuas nyob rau hauv cov nqe lus ntawm lub zog.
Txawm hais tias kev siv aluminium alloys tau poob qis hauv ntau yam ntawm aerospace ntau lawm, aluminium alloys tseem nyob hauv qhov chaw tseem ceeb hauv kev tsim dav hlau niaj hnub, thiab rau ntau yam kev siv tshwj xeeb, txhuas tseem yog cov khoom siv zog, hnav.Vim nws cov ductility siab thiab yooj yim ntawm machining, aluminium yog tsis tshua kim tshaj ntau cov ntaub ntawv sib xyaw lossis titanium.Nws tseem tuaj yeem txhim kho nws cov khoom siv hlau los ntawm kev sib xyaw nrog lwm cov hlau xws li tooj liab, magnesium, manganese thiab zinc lossis los ntawm kev kho mob khaub thuas lossis kub.
Aluminium alloys dav siv hauv kev tsim khoom ntawm aerospace qhov chaw suav nrog:
1. Aluminium alloy 7075 (txhuas / zinc)
2. Aluminium alloy 7475-02 (txhuas / zinc / magnesium / silicon / chromium)
3. Aluminium alloy 6061 (aluminium / magnesium / silicon)
7075, kev sib xyaw ua ke ntawm txhuas thiab zinc, yog ib qho ntawm cov khoom siv feem ntau siv hauv kev siv dav hlau, muab cov khoom siv zoo heev, ductility, lub zog thiab qaug zog.
7475-02 yog kev sib xyaw ntawm txhuas, zinc, silicon thiab chromium, thaum 6061 muaj txhuas, magnesium thiab silicon.Qhov twg yuav tsum tau alloy yog nyob ntawm lub hom phiaj daim ntawv thov ntawm lub davhlau ya nyob twg.Txawm hais tias muaj ntau yam aluminium alloy qhov chaw ntawm lub dav hlau zoo nkauj, nyob rau hauv cov nqe lus ntawm lub teeb yuag thiab rigidity, aluminium alloy yog qhov kev xaiv zoo tshaj plaws.
Ib qho txhuas txhuas siv hauv kev lag luam aerospace yog aluminium scandium.Ntxiv scandium rau txhuas ua rau cov hlau muaj zog thiab kub ua hauj.Siv aluminium scandium kuj txhim kho roj efficiency.Txij li nws yog ib qho kev xaiv rau cov ntaub ntawv denser xws li hlau thiab titanium, hloov cov ntaub ntawv no nrog lub zog aluminium scandium tuaj yeem txuag tau qhov hnyav, yog li txhim kho roj efficiency thiab lub zog ntawm airframe rigidity.
Kev siv stainless hlau qhov chaw hauv aerospace
Hauv kev lag luam aerospace, kev siv cov hlau tsis muaj steel yog qhov xav tsis thoob thaum piv rau txhuas.Vim tias qhov hnyav dua ntawm cov hlau tsis muaj steel, nws siv hauv kev siv aerospace tau nce ntau dua li qhov qub.
Stainless hlau yog hais txog ib tsev neeg ntawm cov hlau-raws li alloys uas muaj tsawg kawg yog 11% chromium, ib tug compound uas tiv thaiv hlau los ntawm corroding thiab muab tshav kub.Ntau hom stainless hlau muaj xws li cov ntsiab lus nitrogen, aluminium, silicon, sulfur, titanium, npib tsib xee, tooj liab, selenium, niobium thiab molybdenum.Muaj ntau ntau hom stainless hlau, muaj ntau tshaj 150 stainless hlau qib, thiab feem ntau siv stainless hlau tsuas yog kwv yees li ib feem kaum ntawm tag nrho cov hlau stainless.Stainless hlau tuaj yeem ua rau hauv daim ntawv, phaj, bar, hlau thiab raj, ua rau nws haum rau ntau yam kev siv.
Muaj tsib pawg tseem ceeb ntawm cov hlau tsis muaj steels faib feem ntau los ntawm lawv cov qauv siv lead ua.Cov hlau stainless no yog:
1. Austenitic stainless hlau
2. Ferritic stainless hlau
3. Martensitic stainless hlau
4. Duplex stainless hlau
5. Cov nag lossis daus hardened stainless hlau
Raws li tau hais los saum no, stainless hlau yog cov hlau alloy uas muaj kev sib xyaw ntawm cov hlau thiab chromium.Lub zog ntawm stainless hlau yog ncaj qha ntsig txog cov ntsiab lus chromium hauv cov hlau.Qhov siab dua cov ntsiab lus chromium, qhov siab dua lub zog ntawm cov hlau.Stainless hlau lub siab tiv thaiv corrosion thiab kub kub ua rau nws haum rau ntau yam ntawm aerospace Cheebtsam, xws li actuators, fasteners thiab tsaws iav Cheebtsam.
Cov txiaj ntsig ntawm kev siv stainless hlau rau aerospace qhov chaw:
Thaum muaj zog dua aluminium, stainless hlau feem ntau hnyav dua.Tab sis piv rau aluminium, stainless hlau qhov chaw muaj ob qhov zoo:
1. Stainless hlau muaj siab corrosion kuj.
2. Stainless hlau muaj zog thiab hnav-resistant ntau dua.
Lub shear modulus thiab melting point ntawm stainless hlau kuj tseem nyuaj rau txheej txheem dua li txhuas alloys.
Cov khoom no yog qhov tseem ceeb rau ntau qhov chaw hauv aerospace, thiab cov hlau tsis muaj steel nyob hauv txoj haujlwm tseem ceeb hauv kev siv aerospace.Qhov zoo ntawm cov hlau tsis muaj steel kuj suav nrog cov cua kub zoo heev thiab hluav taws kub, ci, zoo nkauj tsos.Cov tsos mob thiab kev tu cev zoo heev.Stainless hlau kuj yog ib qho yooj yim los tsim.Thaum lub dav hlau Cheebtsam yuav tsum tau welded, machined los yog txiav kom meej specifications, kev ua tau zoo ntawm stainless hlau cov ntaub ntawv yog tshwj xeeb tshaj yog tseem ceeb.Tej yam stainless hlau alloys muaj kev cuam tshuam tsis zoo, uas tseem cuam tshuam rau kev nyab xeeb ntawm cov dav hlau loj.thiab durability yog qhov tseem ceeb.
Nyob rau tib lub sijhawm, kev lag luam aerospace tau dhau los ua ntau haiv neeg, thiab cov tsheb dav hlau niaj hnub no muaj peev xwm tsim tau nrog cov hlau stainless lub cev lossis cov khoom siv dav hlau.Txawm hais tias nws kim dua, lawv tseem muaj zog dua li txhuas, thiab nrog cov qib sib txawv ntawm cov hlau tsis muaj steel nyob ntawm qhov chaw, kev siv cov hlau tsis muaj steel tseem tuaj yeem muab qhov zoo tshaj plaws lub zog-rau-qhov hnyav piv.
Post lub sij hawm: Mar-02-2023