Yuav ua li cas Aluminium Sib piv ntawm Core Physical Properties
Aluminium zaum ntawm lub teeb kawg ntawm engineering hlau. Nws qhov ceev ntawm 2.70 g / cm³ yog kwv yees li ib feem peb ntawm tooj liab thiab hlau, nws cov thermal conductivity ntawm kwv yees li 235 W / m·K yog thib ob tsuas yog tooj liab ntawm cov qauv hlau, thiab nws cov oxide zaj duab xis ntuj ua kom nws ruaj khov nyob rau hauv feem ntau cov cua tsis muaj txheej ntxiv. Dab tsi nws tsis muaj yog lub zog tsis muaj zog lossis siab siab - qhov muaj peev xwm kub: ntshiab aluminium melts ntawm txog 660℃thiab nws cov elastic modulus ntawm txog 69 GPa yog kwv yees li ib feem peb ntawm cov hlau, yog li qhov tawv nqaij yuav tsum tau los ntawm geometry.
| Hlau | Qhov ceev (g / cm³) | Thermal conductivity (W / m · K) | Melting ntau (degree) | Elastic Modulus (GPa) |
|---|---|---|---|---|
| Aluminium | 2.70 | 235 | 660 | 69 |
| Tooj | 8.96 | 401 | 1085 | 110-128 |
| Cov pa roj carbon steel | 7.85 | 50 | 1425-1540 | 200 |
| Stainless hlau 304 | 8.00 | 16 | 1400-1450 | 193 |
| Titanium qib 2 | 4.51 | 17-22 | 1668 | 105 |
Aluminium Versus Steel: Stainless, Carbon thiab Cam khwb cia hlau
Tawm tsam stainless hlau 304, txhuas ua cua sov txog kaum tsib zaug sai dua thiab hnyav li ib feem peb ntau, uas yog vim li cas cov lauj kaub, cov dab dej kub thiab HVAC coils tau tsim nyob ib ncig ntawm nws. Stainless hlau teb nrog hardness, hnav tsis kam thiab ib qho chaw uas tsis hnov mob nrog acidic cov khoom xyaw, thiab nws yuav pab tau lub zog ntawm qhov kub thiab txias qhov twg txhuas tau poob feem ntau ntawm nws cov load peev xwm. Cov pa roj carbon steel yog pheej yig dua thiab tawv dua thiab yooj yim dua rau vuam, yog li nws nqa cov thav duab, cov hlab ntsha siab thiab cov qauv hnyav, thaum txhuas sib tw txhua qhov hnyav uas tsim nyog them rau. Cam khwb cia hlau coj txawv dua: nws lub peev xwm kub kub thiab tsis tshua muaj hluav taws xob cia nws khaws thiab tso cua sov tsis tu ncua, uas haum rau searing thiab qeeb ua noj, thaum txhuas teb sai thiab kis tau cua sov sib npaug.
Ncaj nraim aluminium-rau-steel contact nyob rau hauv ib qho chaw ntub dej thiab sov yuav tsum zam, vim tias galvanic corrosion tawm tsam cov txhuas tshwj tsis yog tias ob lub hlau sib cais los ntawm ib qho insulator.
Aluminium Versus Tooj thiab Titanium
Copper tseem yog cov neeg siv khoom siv ntawm 100 feem pua IACS thaum cov qib hluav taws xob ntawm txhuas ncav cuag li 61 feem pua, yog li cov cable ntawm tib qhov kev tiv thaiv xav tau kwv yees li 60 feem pua ntawm cov ntoo khaub lig ntau dua - ntu ntu tseem hnyav txog li ib nrab. Tias yog vim li cas cov kab kis tau tus mob, busbars thiab loj fais fab cables feem ntau yog txhuas, thaum tooj liab dominates me me windings, hu thiab precision connectors. Kev tsim vaj tsev ua haujlwm zaum hauv qhov kev txiav tawm, vim tias txhuas tsim cov oxide insulating nyob rau hauv feeb ntawm kev raug, yog li cov pob qij txha nyob ntawm kev puas tsuaj thaum lub sij hawm nruj, ib qho oxide-inhibiting compound thiab connectors rated rau txhuas conductors.
Titanium yog kwv yees li ob feem peb hnyav dua li txhuas thiab ob peb zaug kim dua, tab sis nws muaj zog dua thiab tiv taus kub dua thiab hnyav chlorides. Aluminium yeej meej meej ntawm conductivity, nrog ntau tshaj kaum npaug ntawm thermal conductivity ntawm titanium, thiab ntawm fabricability. Aerospace tsim yog li ntawd siv titanium nyob rau hauv kub los yog heev loaded fittings thiab qhov twg ib feem yog bonded rau carbon-fibre composite, thiab txhuas rau tawv, thav duab, stringers thiab roj tso tsheb hlau luam.
Cookware, Tsheb Lub Cev thiab Cov Khoom Xaiv
Hauv cookware ob lub hlau daws teeb meem tsis sib haum: cam khwb cia hlau khaws cov cua sov thiab tso tawm maj mam, thaum txhuas reacts yuav luag tam sim ntawd rau kev hloov pauv ntawm lub burner thiab kis tau kub sib npaug. Seasoned cam khwb cia hlau muaj ib tug natural non- nplaum nto, thaum txhuas cookware feem ntau yog anodised los yog coated los txwv cov tshuaj tiv thaiv ntawm liab qab hlau thiab acidic zaub mov. Ntau tus kws tshaj lij ua ke ua ke lub cev txhuas nrog lub ntsej muag stainless hlau kom tau txais ob qho kev coj ua ib zaug.
Lub cev lub cev qhia qhov sib npaug ntawm kev lag luam. Cov hlau tseem yog lub neej ntawd vim nws pheej yig, tsim tau, yooj yim rau vuam thiab kho yooj yim, thiab vim tias cov qauv kev sib tsoo nyob ntawm nws qhov nruj thiab kev coj cwj pwm. Aluminium yog siv nyob rau hauv qhov kev txo qhov loj them rau nws tus kheej, tshwj xeeb tshaj yog kaw thiab lub cev - nyob rau hauv -dawb ntawm hluav taws xob tsheb, qhov twg txhua kilogram txuag ncua ntau yam; cov qauv no xav tau tus kheej- tho rivets, cov khoom siv nplaum, ntws- tho screws thiab insulated fasteners es tsis txhob siv qhov chaw vuam.
Cov lus nug nquag
Q: Aluminium los yog stainless hlau rau cov cuab yeej hauv chav ua noj?
Aluminium heats sai dua thiab sib dua tab sis dents yooj yim thiab reacts nrog acidic zaub mov, thaum stainless hlau yog hnyav dua thiab xav tau kev saib xyuas tsawg dua, yog vim li cas muaj ntau yam cuab yeej ua ke ib tug txhuas core nrog ib tug stainless kov nto.
Q: Vim li cas thiaj xaiv aluminium dua tooj liab rau kev xaim?
Cov qib txhuas tus neeg xyuas pib ncav cuag li 61 feem pua IACS, yog li ib lub cable xav tau kwv yees li 60 feem pua ntawm ntau tus ntoo khaub lig- ntu ntu rau tib qhov kev tiv thaiv tab sis hnyav li ib nrab ntawm ntau.
Q: Ua li cas aluminium piv nrog titanium?
Titanium yog kwv yees li ob feem peb hnyav dua thiab ntau zaus kim dua tab sis muaj zog dua thiab tiv taus cua sov ntau dua, thaum txhuas ua cua sov ntau dua kaum zaus sai dua thiab yooj yim dua rau fabricate.
Q: Thaum twg yuav tsum tau cam khwb cia hlau los ntawm txhuas?
Xaiv cov cam khwb cia hlau thaum khov kho cua sov thiab thermal loj teeb meem, thiab txhuas thaum teb ceev ceev, qhov hnyav qis thiab txawm tias cua sov faib yog qhov tseem ceeb; cov chav ua noj tshaj lij feem ntau khaws ob qho tib si.
Q: Vim li cas lub tsheb lub cev tsis ua los ntawm cov ntshiab txhuas?
Hlau yog pheej yig dua, tawv thiab yooj yim los kho, thiab cov qauv txhuas xav tau rivets, adhesives thiab galvanic cais, yog li txhuas yog siv qhov hnyav uas txuag tau tus nqi ntxiv.
