Qhov sib txawv tseem ceeb ntawm cam khwb cia thiab wrought aluminium alloys yog tias cov cam khwb cia aluminium alloys muaj ntau yam tsis xws luag sab hauv thiab sab nraud whereas lub wrought aluminium alloys feem ntau tsis muaj qhov tsis xws luag sab hauv thiab sab nraud.
Aluminium alloys yog cov alloys ntawm txhuas uas muaj txhuas raws li cov hlau tseem ceeb nrog rau ib lossis ntau lub ntsiab lus xws li tooj liab, magnesium, silicon thiab tin. Muaj ob hom loj ntawm aluminium alloys. Namely, lawv yog cam khwb cia thiab wrought aluminium alloys.
Cast Aluminium Alloys yog dab tsi?
Cam khwb cia txhuas alloys yog cov alloys uas muaj txhuas raws li cov hlau tseem ceeb thiab lwm yam alloying ntsiab. Peb tuaj yeem faib cov pab pawg no ntawm cov alloys rau hauv ob pawg loj xws li cov ntaub ntawv kho cua sov thiab cov ntaub ntawv uas tsis yog cua sov. Tsis tas li ntawd, lub zog tensile ntawm cov alloys yog qis dua, tab sis lawv tau txais cov khoom lag luam zoo. Nws yog vim lawv qhov qis melting point. Daim ntawv siv feem ntau yog aluminium-silicon cam khwb cia hlau. Nyob ntawd, qib siab ntawm silicon muab cov alloy nrog zoo casting yam ntxwv.
Daim duab 01: Aluminium Roj Tsheb kauj vab log
Peb tuaj yeem sau cov khoom zoo ntawm aluminium alloys uas ua rau lawv muaj txiaj ntsig zoo li cam khwb cia txhuas alloys.
- qis melting point
- Zoo fluidity
- Muaj peev xwm tswj tau cov qauv nplej
- zoo nto tiav
- Low solubility of gases
- Muaj peev xwm ntxiv dag zog los ntawm kev kho cua sov
Txawm li cas los xij, muaj qee yam khoom tsis zoo ib yam. Piv txwv li, cov alloys no qhia tau hais tias siab shrinkage thiab susceptibility rau shrinkage defects. Ntxiv mus, cov alloys muaj cov solubility siab ntawm hydrogen gas. Thiab tseem, lawv raug kub hnyiab kub thiab muaj ductility tsawg thiab.
Dab tsi yog Wrought Aluminium Alloys?
Wrought aluminium alloys yog ib daim ntawv ntawm txhuas alloys uas muaj txhuas raws li cov hlau tseem ceeb. Cov alloys no yog qhov tseem ceeb hauv kev tsim cov txheej txheem xws li dov, forging thiab extrusion. Tsis tas li ntawd, peb tuaj yeem faib cov ntaub ntawv alloy no rau hauv ob pawg loj xws li cov khoom siv hluav taws xob kho tau thiab tsis kub-kho tau. Kwv yees li 85% ntawm aluminium alloys yog wrought alloy cov ntaub ntawv. Lawv muaj lub zog tensile siab piv.
Daim duab 02: Aerospace Application of Aluminium-Scandium Alloy
cov ntaub ntawv kho cua sov tuaj yeem ua kom muaj zog los ntawm cov txheej txheem kho cua sov. Nws yog vim lub solubility ntawm alloying ntsiab nyob ntawm qhov kub thiab txias. Thawj lub zog ntawm cov hlau no yog los ntawm cov hlau alloying xws li tooj liab, silicon, magnesium thiab zinc. Cov ntaub ntawv uas tsis yog-kub-kho tau, ntawm qhov tod tes, tsis tuaj yeem ntxiv dag zog los ntawm kev kho cua sov. Lawv lub zog pib yog vim alloying ntsiab xws li manganese, silicon thiab magnesium. Txij li thaum kev kho cua sov tsis ua hauj lwm rau lawv, kev ua hauj lwm txias los yog strain hardening yuav siv tau los ntxiv dag zog rau cov hlau. Ntxiv mus, cov alloys no yog ductile thiab muaj zog me ntsis.
Qhov txawv ntawm Casting thiab Wrought Aluminium Alloys yog dab tsi?
Cam khwb cia aluminium alloy yog ib daim ntawv ntawm aluminium-muaj alloy uas muaj cov yam ntxwv casting whereas wrought aluminium alloy yog ib daim ntawv ntawm txhuas-muaj alloy uas muaj txiaj ntsig zoo rau kev tsim cov txheej txheem. Qhov sib txawv tseem ceeb ntawm cam khwb cia thiab wrought aluminium alloys yog tias cam khwb cia txhuas alloys muaj ntau yam tsis xws luag sab hauv thiab sab nraud whereas wrought aluminium alloys feem ntau tsis muaj qhov tsis xws luag sab hauv thiab sab nraud. Tsis tas li ntawd, qhov sib txawv ntawm cam khwb cia thiab wrought aluminium alloys raws li cov khoom yog tias cov cam khwb cia aluminium alloys muaj qhov qis melting point, li no, tus nqi-zoo yog siab thaum lub melting point yog siab rau wrought daim ntawv, yog li, tus nqi-effectiveness yog tsawg..
Tau qhov ntawd, kuj tseem muaj qhov sib txawv ntawm cam khwb cia thiab wrought aluminium alloys raws li lawv lub zog tensile. Lub zog tensile ntawm cam khwb cia alloy daim ntawv yog qis dua li ntawm daim ntawv wrought. Cov ntaub ntawv hauv qab no qhia cov ntsiab lus ntxiv ntawm qhov sib txawv ntawm cam khwb cia thiab wrought aluminium alloys.
Summary – Cast vs Wrought Aluminium Alloys
Muaj ob yam loj ntawm aluminium alloys; cam khwb cia thiab wrought aluminium alloys. Qhov sib txawv tseem ceeb ntawm cam khwb cia thiab wrought aluminium alloys yog tias cov cam khwb cia txhuas alloys muaj ntau yam tsis xws luag sab hauv thiab sab nraud whereas cov wrought aluminium alloys feem ntau tsis muaj qhov tsis xws luag sab hauv thiab sab nraud.
