Qhov "T" hauv 6061-T6 txhuas qhia tias cov hlau tau raug "kho tau zoo" lossis "tshav kub- kho," txhais tau tias nws tau dhau los ua ib qho kev kho cua sov- cov txheej txheem kho kom ua tiav lub siab ruaj khov thiab txhim kho lub zog. Lub npe "T6" piav qhia ntxiv tias cov hlau tau raug kho cov cua sov thiab tom qab ntawd cov hnub nyoog tsim nyog kom ncav cuag nws cov khoom siv tshuab kawg.
T:Tsab ntawv no qhia tau hais tias cov txhuas tau raug thermally kho. Nws siv tau rau cov alloys uas tuaj yeem ua kom sov- kho kom muaj kev kub ntxhov.
6:Tus lej uas ua raws li "T" qhia txog cov cua sov tshwj xeeb- txoj kev kho. Rau T6 temper, cov txheej txheem no suav nrog:
Kev kho cua sov:Cov hlau yog rhuab mus rau qhov kub siab kom cov ntsiab lus alloying yaj mus rau hauv cov khoom sib tov, ua raws li sai quenching.
Artificial Aging:Tom qab quenching, cov khoom yog artificially hnub nyoog ntawm ib tug qis kub rau lub sij hawm teem. Cov nag lossis daus no- cov kauj ruam hardening ua rau kom cov alloy lub zog, hardness, thiab yield zog.
Qhov sib txawv ntawm qhov "T" Temper Designations rau 6061 Alloy Aluminium
Kev lag luam sib txawv siv ntau txoj hauv kev los qhia cov ntaub ntawv. Hauv ntau cov duab kos duab, cov kev cai txhuas feem ntau tsis meej thiab tsuas yog qhia "Alum 6061-T6" yam tsis muaj kev nthuav dav ntxiv. Cov khoom siv dav dav no feem ntau siv vim tias ib feem yuav raug tsim los ntawm phaj, extruded, lossis dov Tshuag. Nws muab kev yooj yim rau lub khw ua haujlwm, thiab tus kws ua haujlwm tsis txhob ua cov kev txwv tsis tsim nyog thaum txoj kev tsim khoom lossis cov khoom siv tseem tsis tau txhais.
Thaum cov txheej txheem fabrication tau txiav txim siab, cov engineering lossis pab pawg ua haujlwm zoo yuav tsum qhia meej cov hom txhuas zoo tshaj plaws rau daim ntawv thov. Lub tuam tsev zoo ntawm cov tuam txhab xws liGNEEtuaj yeem txheeb xyuas cov khoom siv tiag tiag siv los ntawm cov qauv tshuaj ntsuam xyuas cov qauv thiab cov ntaub ntawv pov thawj. Engineering tuaj yeem hloov kho cov ntawv luam tawm cov khoom siv rau kev tsim khoom.
Txhawm rau kom nkag siab txog txoj hauv kev no, nws yog ib qho tseem ceeb kom paub txog qhov sib txawv ntawm qhov sib txawv "T" temper designations.
T6 Temper - "Kev daws teeb meem tshav kub-Kho thiab Artificially Aged"
Txhawm rau ua tiav T6 temper, 6061-O aluminium billets yog rhuab mus rau kwv yees li 990℃F, quenched hauv dej, thiab ces dag hnub nyoog ntawm ib ncig ntawm 350℃F rau txog yim teev. Cov txheej txheem no nce lub zog tawm los ntawm 8 ksi mus txog 35 ksi (qhov twg ksi sawv cev rau chav ntsuas kev ntxhov siab sib npaug rau 1000 lbf / in²).
Phaj T6 (Tsim T651) - "Kev daws teeb meem kub-Kho, Artificially Aged, thiab Permanent Set"
Dej quenching qhia txog cov kev ntxhov siab uas seem vim qhov kub sib txawv ntawm qhov chaw thiab qhov chaw. Lub npe T651 qhia tau hais tias lub zeb tau siv 1% mus rau 3% mus tas li kom txo tau cov kev ntxhov siab no. Qhov no txo cov distortion thaum lub sij hawm machining. Cov kev qhia tshwj xeeb suav nrog ASTM-B209 thiab AMS-QQ-A-250/11 rau cov khoom lag luam phaj muab los ntawm cov tuam txhab xws liGNEE.
Extruded T6 (Designated T6511) - "Kev daws teeb meem kub-Kho, Artificially Aged, Permanent Set, and Straightened"
Tus lej kawg "1" nyob rau hauv T6511 temper qhia tau hais tias cov khoom yog extrusion, raws li qhov kev xaiv no tsuas yog siv rau extruded Tshuag. Nws kuj qhia tau hais tias lub zeb raug tso cai rau ncaj cov extruded bars -raws li nrog ib tug xovxwm - kom tau raws li qhov yuav tsum tau muaj kev tolerances. Cov lus qhia tshwj xeeb suav nrog ASTM-B221 thiab AMS-QQ-A-200/8 rau extruded rounds, uasGNEEnquag muab.
Cold Finished/Rolled T6 (Kuj Tsim T651)-"Kev daws teeb meem tshav kub-Kho, Artificially Aged, Permanent Set"
Txias-cov khoom tiav lossis dov kuj raug xaiv T651, tab sis tsis muaj qhov ntxiv "1." Qhov no siv tau rau cov phaj thiab txias - ua tiav rounds. Qhov tsis muaj tus lej kawg qhia txog qhov zoo sib xws rau kev ua cov phaj. Cov khoom siv no feem ntau hu ua "screw machine stock." Nws muab nruj dua raug kam rau ua piv rau extruded Tshuag. Piv txwv li, ib qho 1.000 "extruded round bar nrog qhov "zoo kam rau ua" muaj lub cheeb qhov siab ntawm 0.005", whereas txias-cov khoom tiav feem ntau tuav qhov kam rau ntawm 0.002". Cov khoom siv tshuab zoo sib xws -ob qho tib si muaj 35 ksi tensile lub zog muaj zog, tab sis extruded lub zog ntawm 35 ksi tensile zog, tab sis extruded lub zog ntawm 35. txias- cov khoom tiav yog me ntsis siab dua ntawm 42 ksi. Cov kev qhia tshwj xeeb suav nrog ASTM-B211 thiab AMS-QQ-A-225/8 rau kev sib tw, dav siv los ntawmGNEE.
Summary of Metallurgical Differences
Chemically thiab lub cev, tag nrho cov tempers no yeej tseem zoo tib yam. Txawm li cas los xij, kev hloov pauv ntawm cov nplej thiab cov kev ntxhov siab los ntawm kev ncaj tuaj yeem muaj nyob hauv cov khoom T6511 (raws li feem ntau cov tuav tau ncaj qha).
