Vim li cas T6 Temper Limit Bendability
Lub npe T6 txhais tau hais tias cov khoom tau raug kho thaum tshav kub kub kho, quenched thiab ces dag hnub nyoog mus rau siab kawg lub zog. Nyob rau hauv alloy 6061 kev laus xyaum uas tsim T6 feem ntau yog ib qho kev kho los nag ntawm kwv yees li 175 C rau 8 teev, ua raws li cov kev taw qhia rau kev kho cua sov ntawm wrought aluminium alloys hauv ASTM B918 / B918M. Thaum muaj hnub nyoog, nplua Mg2Si precipitates thoob plaws hauv cov nplej thiab nce lub zog tawm mus txog 276 MPa nrog lub zog tensile nyob ib ncig ntawm 310 MPa. Kev lag luam tawm -tawm yog qhov txo qis hauv qhov elongation muaj ua ntej tawg, mus rau kwv yees li 10 mus rau 12 feem pua ntawm cov ntaub ntawv luam tawm.
Bending concentrates yas strain nyob rau sab nraud ntawm qhov khoov. Thaum lub cheeb tsam xav tau ntawm qhov chaw tshaj qhov seem elongation ntawm cov khoom, ib qho tawg pib. Nyob rau hauv ncov -hnub nyoog 6061 cov npoo ntawm cov kab nrib pleb los ntawm ib tug nruj khoov thiab lub strain ntawm cov khoom yuav nqus tau me me, yog li tsis ua hauj lwm yuav tsis maj mam li - ib feem ntawm cov ntaub ntawv huv si los yog puas. Ob peb lub tswv yim ua rau qhov no tsis zoo: T6 microstructure ua haujlwm- hardens sai, yog li strain localises es tsis txhob faib; coarse constituent hais ua raws li qhov chaw pib tawg; thiab nyob rau hauv cov phaj thicker seem tsuas yog tsis tuaj yeem khoov mus rau ib lub vojvoog me me tsis hais cov hlau.
Tsim tus cwj pwm los ntawm Alloy thiab Temper
Cov lus hauv qab no qhia txog kev tsim cov yam ntxwv ntawm cov kev xaiv uas ib txwm xav tau thaum tus qauv tsim hu rau khoov.
| Khoom siv | Tensile zog (tseem ceeb) | Yield zog (tus qauv) | Elongation (ntev) | Tsim kev ntsuam xyuas |
|---|---|---|---|---|
| 6061-T6 | 310 MPa | 276 MPa ua | 10 mus rau 12% | pluag; tawg ntawm nruj radii |
| 6061-T4 | 241 MPa ua | 145 MPa | txog 16% | Zoo; tiam t6 |
| 6061-O | txog 115 MPa | txog 48 MPa | txog 25% | Zoo heev rau kev sib sau hnyav |
| 5052-H32 | 228 MPa yam tsawg kawg nkaus | 193 MPa yam tsawg kawg nkaus | txog 12% | Zoo; standard xaiv rau daim ntawv dabtsi yog khoov |
| 5052-O | txog 195 MPa | txog 90 MPa | txog 25% | Zoo heev |
| 3003-H14 | txog 152 MPa | txog 145 MPa | txog 8% | Nruab nrab; dav dav xav tau |
| 6063-T5 / T6 | 186 rau 241 MPa | 145 txog 214 MPa | li ntawm 8 mus rau 12% | Dav siv rau lub raj khoov |
Yam tsawg kawg nkaus rau cov tempers teev nyob rau hauv ASTM B209 / B209M los yog ASTM B221 yuav tsum tau muab coj los ntawm tus qauv khoom thiab daim ntawv pov thawj zeb rau qhov tseeb ntau; cov nuj nqis ntawm no yog qhov tseem ceeb tshaj tawm rau kev xaiv ua haujlwm nkaus xwb. Nco ntsoov tias 5052-H32 muaj lub zog tawm los ntau dua li 6061-T4 thaum tseem nyob deb dua formable, uas yog vim li cas nws dominates tsim cov ntawv hlau ua haujlwm.
Tswv yim Yam tsawg kawg nkaus Khoov Radii
Khoov vojvoog kev taw qhia yog lub khw xyaum es tsis yog ib tug xov tooj luam tawm, vim hais tias lub vojvoog ua tiav nyob ntawm thickness, grain kev taw qhia, tooling mob thiab cov kev tso cai theem ntawm nto marking. Cov kab hauv qab no qhia txog kev coj ua rau 90℃khoov hauv qhov kev hloov pauv, qhov twg T yog cov khoom tuab.
Rau 6061-T6, ib lub vojvoog sab hauv hauv qab ntawm 2.5T txog 4T yog qhov kev pheej hmoo siab, thiab ntau tus neeg tsim khoom tsis kam khoov nws qis dua 3T. Rau 6061-T4 qhov kev ua tau zoo yog li 1.5T txog 2T. Rau 5052-H32, txog 1.0T txog 1.5T. Rau 5052-O, txog 0.5T. Rau 3003-H14, txog 0.5T rau 1T.
Plaub txoj cai txo qhov kev pheej hmoo tawg tsis hais txog cov hlau. Khoov hla lub dov kev taw qhia, tsis nrog nws. Deburr thiab, yog tias ua tau, txhuam cov kab khoov, vim tias lub npoo sheared yog qhov pib tawg. Siv lub qhov ntswg qhov ntswg qhov sib npaug uas phim lub vojvoog ntawm daim duab es tsis txhob cia siab rau qhov qhib qhov tuag. Thiab ua kom qhov khoov thaj tsam tsis muaj qhov sib sib zog nqus khawb thiab cov cim stamping, uas ua raws li kev ntxhov siab.
Daim ntawv-Tom qab ntawd- Hnub nyoog Txoj Kev
Thaum tus qauv tsim yuav tsum muaj lub zog ntawm 6061-T6 thiab tseem yuav tsum tau khoov, qhov kev daws teeb meem uas tau txais yog tsim nyob rau hauv cov mob softer thiab hnub nyoog tom qab. Ob tug variants yog siv. Nyob rau hauv thawj zaug, tus fabricator yuav cov tshuaj kho cua sov kho thiab ib txwm muaj hnub nyoog 6061-T4 cov ntaub ntawv, uas yog ruaj khov thiab formable rau lub sij hawm siv tau, tsim nws, thiab ces dag hnub nyoog nws mus rau T6 ntawm txog 175 C rau 8 teev. Hauv qhov thib ob, cov khoom siv tshuaj kho cov khoom siv hauv tsev, ua rau nws nyob rau hauv qhov zoo li-quenched W thaum nws tseem mos, thiab tom qab ntawd muaj hnub nyoog rau T6. Txoj kev thib ob muab qhov zoo tshaj plaws formability tab sis xav kom tsim tau qhov chaw nyob rau hauv ib tug luv luv lub qhov rais tom qab quenching, feem ntau txwv rau cov sij hawm, thiab hais tias cov khoom yuav tsum refrigerated yog hais tias lub lag luam yog ncua.
Ob qhov cuam tshuam yuav tsum tau tso cai rau. Qhov kev hloov pauv ntawm kev laus me me tab sis ntsuas tau, yog li nruj - qhov ntev yuav tsum tau txheeb xyuas tom qab lub voj voog kev laus. Thiab springback yog loj dua nyob rau hauv siab - lub zog tempers vim hais tias cov elastic modulus rau yield zog piv yog siab, yog li cov cuab yeej yuav tsum tau tsim nrog them nyiaj thiab validated los ntawm kev sim.
Khoov Verification thiab Kev Tswj Xyuas Zoo
Kev lees txais khoov yuav tsum yog nyob ntawm qhov kev xeem es tsis yog kev kuaj pom ib leeg. ASTM E290 piav qhia txog tus qauv khoov txoj hauv kev rau ductility thiab ISO 7438 yog cov khoom siv hlau sib npaug, nrog GB / T 232 raws li kev sib piv hauv Suav teb. Kev qhwv khoov rau 180 degrees nyob ib ncig ntawm lub mandrel uas tau teev tseg, nrog rau kev tshuaj xyuas ntawm qhov chaw sab nraud ntawm ob mus rau peb zaug kev nthuav dav, yog qhov kev txheeb xyuas ntau lawm, thiab thawj zaug -kab lus kuaj ntawm ib lub vojvoog kauj ruam nruj dua li daim duab tsim cov txheej txheem margin. Rau cov anodised los yog pleev xim rau qhov chaw, txheej yooj yog soj ntsuam cais los ntawm T- khoov txoj kev ntawm ASTM D4145, vim hais tias ib txheej yuav ua tsis tau thaum lub substrate tseem suab.
Cov lus nug nquag
Q:6061-T6 puas tuaj yeem khoov yam tsis muaj kev tawg?
A: Tsuas yog nrog lub dav dav hauv lub vojvoog, feem ntau 2.5T txog 4T lossis ntau dua, thiab nrog txoj kab khoov hla mus rau qhov kev taw qhia dov. Ntau tus neeg tsim khoom tsis kam khoov 6061-T6 ntawm txhua qhov thiab qhia meej tias muaj ntau hom alloy.
Q:Qhov twg aluminium alloy yuav tsum siv 6061-T6 rau dabtsi yog khoov?
A: 5052-H32 rau kev ua haujlwm dav hlau-hlau, vim tias nws muab cov khoom siv muaj zog nrog kev ua haujlwm zoo thiab kev tiv thaiv corrosion, los yog 3003-H14 rau cov khoom siv me me. Rau raj khoov, 6063-T5 yog ib qho kev xaiv.
Q:6061 puas tuaj yeem khoov thiab tom qab hnub nyoog rau T6?
A: Yog. Qhov no yog tus qauv kev coj ua: tsim ib feem hauv T4 mob, lossis tam sim ntawd tom qab quenching hauv W mob, ces hnub nyoog ntawm 175 C rau 8 teev kom ncav cuag T6 lub zog. Tso cai rau me me hloov pauv thaum muaj hnub nyoog.
Q:Vim li cas 6061-T6 tawg tsis txhob deforming?
A: Peak aging nce yield zog mus txog 276 MPa thaum txo qhov muaj elongation rau kwv yees li 10 mus rau 12 feem pua. Kev khoov xav tau ntau dua li cov khoom siv tuaj yeem nqus tau ntawm cov radii nruj, yog li nws puas ntsoog ntau dua li qhov ua tau zoo zuj zus.
Q:Txoj kev khoov zoo li cas tau txheeb xyuas hauv kev tsim khoom?
A: Los ntawm kev ntsuas kev khoov rau ASTM E290 lossis ISO 7438, feem ntau ntawm 180 degrees nyob ib ncig ntawm lub mandrel uas tau teev tseg, ntxiv rau qhov nruj dua - vojvoog sim ntawm thawj tsab xov xwm los tsim cov txheej txheem margin.
Q:Cov ntaub ntawv thickness puas cuam tshuam rau bendability?
A: Yog. Rau tib lub voj voog nyob rau hauv thickness piv, cov khoom thicker coj zoo ib yam, tab sis ua kom tiav ib lub vojvoog me me hauv cov phaj tuab yuav tsum muaj cov cuab yeej loj dua thiab raug txwv los ntawm lub vojvoog rau thickness piv, tsis yog los ntawm alloy ib leeg.
