Thaum xaiv cov khoom siv rau kev tsim kho, kev tsim khoom, lossis DIY tej yaam num, txhuas thiab stainless hlau yog ob ntawm cov hlau nrov tshaj plaws. Tab sis dab tsi raws nraim muab lawv sib nrug? Txawm hais tias koj yog ib tus kws tshaj lij, tus nyiam nyiam, lossis tsuas yog xav paub, nkag siab txog lawv qhov sib txawv tuaj yeem pab koj txiav txim siab paub. Hauv qhov blog no, peb yuav rhuav tshem lawv cov khoom, cov ntawv thov, cov nqi, thiab lwm yam - txhawb nqa los ntawm cov kws tshaj lij - los pab koj xaiv cov khoom siv rau koj cov kev xav tau.
1. Kev Sau: Lawv Ua Li Cas?
Qhov tseem ceeb sib txawv ntawm aluminium thiab stainless hlau nyob rau hauv lawv muaj pes tsawg leeg.
Aluminiumyog ib lub teeb, silvery-dawb hlau pom nyob rau hauv lub ntiaj teb lub crust. Ntshiab aluminium yog mos, yog li nws feem ntau alloyed nrog cov ntsiab lus xws li tooj liab, magnesium, los yog silicon los txhim kho lub zog. Piv txwv li, qhov dav siv 6061 aluminium alloy muaj magnesium thiab silicon.
Stainless hlauyog cov hlau-raws li alloy uas muaj tsawg kawg yog 10.5% chromium, uas tsim cov txheej txheem oxide passive los tiv thaiv corrosion.. Cov qib zoo li 304 stainless hlau kuj suav nrog npib tsib xee thiab carbon.
2. Lub zog thiab kav ntev
Lub zog yuav tsum tau sib txawv ntawm daim ntawv thov, yog li cia peb piv lawv cov khoom siv kho tshuab.
Stainless hlau:
Stainless hlau muaj zog dua li txhuas, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig kev ntxhov siab. Piv txwv li, qib 304 stainless hlau muaj lub zog tensile ntawm ~ 505 MPa, piv rau 6061 txhuas lub ~ 310 MPa.
Aluminium:
Thaum tsis tshua muaj zog los ntawm ntim, aluminium muaj qhov zoo zog-rau-qhov hnyav piv. Qhov no ua rau nws zoo meej rau cov khoom siv dav hlau (xws li lub dav hlau thav duab) thiab kev lag luam tsheb thauj mus los uas txo qhov hnyav yog qhov tseem ceeb.
Yog li, stainless hlau muaj zog tag nrho, tab sis aluminium excels thaum lub teeb lub zog teeb meem.
3. Corrosion Resistance
Ob leeg hlau tiv thaiv corrosion, tab sis lawv cov mechanisms txawv.
Stainless hlau:
Chromium nyob rau hauv stainless hlau reacts nrog oxygen los tsim ib tug tiv thaiv chromium oxide txheej. Cov txheej txheem kho tus kheej no tiv thaiv xeb, txawm tias khawb. Qib zoo li 316 stainless hlau ntxiv molybdenum ntxiv rau cov dej ntsev thiab tshuaj.
Aluminium:
Aluminium ib txwm tsim ib txheej oxide nyias, tiv thaiv nws los ntawm oxidation. Txawm li cas los xij, nws yooj yim rau galvanic corrosion thaum ua ke nrog cov hlau sib txawv hauv qhov chaw ntub dej. Anodizing lossis coatings tuaj yeem txhim kho nws qhov kev tiv thaiv.
Yog li, stainless hlau muaj kev tiv thaiv corrosion ntau dua, thaum txhuas xav tau kev tiv thaiv kev kho mob hnyav.
4. Nyhav: Aluminium Wins rau kev siv lub teeb yuag
Aluminium qhov ntom yog li 2.7 g / cm³, tsawg dua li ib feem peb ntawm stainless hlau 8 g / cm³,uas yog lub teeb heev.
·Aircraft thiab automotive qhov chaw
·Portable electronics (piv txwv li, laptops)
·Cov khoom siv xws li tsheb kauj vab thiab cov khoom siv mus pw hav zoov
Stainless hlau heft yog qhov zoo dua hauv cov ntawv thov kev ruaj ntseg, xws li kev lag luam tshuab lossis kev txhawb nqa vaj tsev.
5. Thermal thiab hluav taws xob conductivity
Thermal conductivity:
Txhuas ua kom sov 3x zoo dua cov hlau tsis muaj steel, ua rau nws zoo tagnrho rau cov dab dej kub, cookware, thiab HVAC systems.
Hluav taws xob conductivity:
Aluminium yog dav siv nyob rau hauv lub hwj chim kab thiab hluav taws xob thaiv vim nws high conductivity (61% ntawm tooj liab). Stainless hlau yog ib tug tsis zoo conductor thiab tsis tshua muaj siv nyob rau hauv daim ntawv thov hluav taws xob.
6. Cov nqi sib piv
Aluminium:
Feem ntau pheej yig dua li cov hlau tsis muaj steel, nrog cov nqi hloov pauv raws li cov nqi hluav taws xob (cov khoom siv txhuas yog lub zog siv zog). Raws li xyoo 2023, txhuas tus nqi ~ $ 2,500 ib metric ton.
Stainless hlau:
kim dua vim alloying ntsiab xws li chromium thiab nickel. Qib 304 stainless hlau nruab nrab ~ $ 3,000 ib metric tuj.
Tswv yim:Rau cov phiaj xwm nyiaj txiag uas hnyav hnyav, xaiv aluminium. Rau lub neej ntev nyob rau hauv ib puag ncig hnyav, stainless hlau tuaj yeem ua pov thawj tus nqi siab dua.
7. Machinability thiab Fabrication
Aluminium:
softer thiab yooj yim rau txiav, khoov, los yog extrude. Zoo tagnrho rau cov duab complex thiab sai prototyping. Txawm li cas los xij, nws tuaj yeem ua cov pos hniav vim nws qhov qis melting point.
Stainless hlau:
Harder rau tshuab, xav tau cov cuab yeej tshwj xeeb thiab qeeb qeeb. Txawm li cas los xij, nws tuav cov duab meej thiab ua tiav zoo, haum rau cov khoom siv kho mob lossis cov ntsiab lus architectural.
Rau vuam, stainless hlau yuav tsum tau inert gas shielding (TIG / MIG), thaum txhuas xav tau kev tuav kom tsis txhob warping.
8. Kev siv ntau
Kev siv aluminium:
·Aerospace (lub dav hlau dav hlau)
·Ntim (cov kaus poom, ntawv ci)
·Kev tsim kho (qhov rais thav duab, vov tsev)
·Kev thauj mus los (tsheb, nkoj)
Stainless hlau siv:
·Cov cuab yeej kho mob
·Cov khoom siv hauv chav ua noj (sinks, cutlery)
·Chemical processing tanks
·Marine hardware (nkoj fittings)
9. Sustainability thiab Recycling
Ob leeg hlau yog 100% recyclable:
·Aluminium recycling txuag 95% ntawm lub zog xav tau rau thawj cov khoom.
· Stainless hlau tuaj yeem rov qab siv tau yam tsis muaj qhov tsis zoo, txo qis kev thov tsuas.
Lus Nug: Koj Yuav Xaiv Qhov Twg?
Xaiv Aluminium Yog:
·Koj xav tau ib lub teeb yuag, cov khoom siv zoo.
·Thermal / hluav taws xob conductivity yog qhov tseem ceeb.
·Qhov project tsis cuam tshuam nrog kev ntxhov siab lossis qhov chaw corrosive.
Xaiv Stainless Hlau Yog tias:
·Lub zog thiab corrosion kuj yog qhov tseem ceeb tshaj plaws.
·Daim ntawv thov muaj qhov kub thiab txias los yog tshuaj hnyav.
·Kev zoo nkauj zoo nkauj (xws li, polished tiav) tseem ceeb.
Post lub sij hawm: Feb-25-2025
