{"id":6800,"date":"2024-11-05T10:16:58","date_gmt":"2024-11-05T10:16:58","guid":{"rendered":"https:\/\/premiumalu.com\/ultimate-guide-to-2024-t3-aluminum\/"},"modified":"2026-08-10T13:52:04","modified_gmt":"2026-08-10T13:52:04","slug":"dokonaly-pruvodce-hlinikem-2024-t3","status":"publish","type":"post","link":"https:\/\/premiumalu.com\/cs\/ultimate-guide-to-2024-t3-aluminum\/","title":{"rendered":"Odborn\u00e9 poznatky o hlin\u00edku T3 z roku 2024"},"content":{"rendered":"

Co je hlin\u00edk 2024?<\/h2>\n\n\n\n

2024 je m\u011bd\u011bn\u00fd pracovn\u00ed k\u016f\u0148 \u0159ady 2xxx. M\u011b\u010f v rozmez\u00ed 3,8\u20134,9%, s ho\u0159\u010d\u00edkem 1,2\u20131,8% a manganem 0,3\u20130,9%, \u010din\u00ed tuto slitinu tepeln\u011b zpracovatelnou: uvnit\u0159 kovu se tvo\u0159\u00ed jemn\u00e9 precipit\u00e1ty, kter\u00e9 ukotvuj\u00ed dislokace, a pr\u00e1v\u011b odtud poch\u00e1z\u00ed pevnost. V pevn\u011bj\u0161\u00edch stavech zpracov\u00e1n\u00ed 2024 unese zat\u00ed\u017een\u00ed, kter\u00e1 by jinak vy\u017eadovala ocel, p\u0159i zhruba jedn\u00e9 t\u0159etin\u011b hustoty.<\/p>\n\n\n\n

Obsah m\u011bdi tak\u00e9 p\u0159in\u00e1\u0161\u00ed specifick\u00e9 kompromisy. 2024 pat\u0159\u00ed mezi nejm\u00e9n\u011b korozivzdorn\u00e9 hlin\u00edkov\u00e9 slitiny v b\u011b\u017en\u00e9m pou\u017eit\u00ed, proto\u017ee f\u00e1ze bohat\u00e9 na m\u011b\u010f vytv\u00e1\u0159ej\u00ed galvanick\u00e9 \u010dl\u00e1nky pod\u00e9l hranic zrn, tak\u017ee hol\u00fd materi\u00e1l vy\u017eaduje pl\u00e1tov\u00e1n\u00ed, eloxov\u00e1n\u00ed nebo n\u00e1t\u011br v jak\u00e9mkoli vlhk\u00e9m \u010di mo\u0159sk\u00e9m prost\u0159ed\u00ed. Tak\u00e9 se \u0161patn\u011b spojuje tavn\u00fdm sva\u0159ov\u00e1n\u00edm, proto\u017ee oblast tepeln\u00e9ho ovlivn\u011bn\u00ed je n\u00e1chyln\u00e1 k prask\u00e1n\u00ed, proto se konstrukce z 2024 n\u00fdtuj\u00ed nebo \u0161roubuj\u00ed. Tyto limity pat\u0159\u00ed k samotn\u00e9 slitin\u011b a nem\u011bn\u00ed se tepeln\u00fdm zpracov\u00e1n\u00edm. Co se m\u011bn\u00ed \u2014 pevnost, ta\u017enost a m\u00edra tv\u00e1\u0159en\u00ed, kterou materi\u00e1l snese p\u0159ed prasknut\u00edm \u2014 je ur\u010deno v\u00fdhradn\u011b stavem zpracov\u00e1n\u00ed, a pro plechov\u00e9 pr\u00e1ce je t\u00edmto stavem t\u00e9m\u011b\u0159 v\u017edy T3.<\/p>\n\n\n\n

Porozum\u011bn\u00ed stavu zpracov\u00e1n\u00ed T3<\/h2>\n\n\n\n

Ozna\u010den\u00ed T3 definuje t\u0159\u00edkrokovou sekvenci: roztokov\u00e9 \u017e\u00edh\u00e1n\u00ed, tv\u00e1\u0159en\u00ed za studena a n\u00e1sledn\u00e9 p\u0159irozen\u00e9 st\u00e1rnut\u00ed do podstatn\u011b stabiln\u00edho stavu.<\/p>\n\n\n\n

Krok<\/strong><\/td>Proces<\/strong><\/td>\u00da\u010del a v\u00fdsledek<\/strong><\/td><\/tr>
Roztokov\u00e9 \u017e\u00edh\u00e1n\u00ed<\/td>Zah\u0159\u00e1t\u00ed na p\u0159ibli\u017en\u011b 493 \u00b0C (920 \u00b0F), n\u00e1sledn\u00e9 zakalen\u00ed<\/td>M\u011b\u010f a ho\u0159\u010d\u00edk se rozpust\u00ed v hlin\u00edkov\u00e9 matrici a z\u016fstanou zachyceny v p\u0159esycen\u00e9m tuh\u00e9m roztoku<\/td><\/tr>
Tv\u00e1\u0159en\u00ed za studena<\/td>\u0158\u00edzen\u00e1 deformace \u2014 u plechu v\u00e1lcovac\u00ed nebo rovnac\u00ed pr\u016fchod<\/td>Zvy\u0161uje hustotu dislokac\u00ed na zakalen\u00e9 struktu\u0159e; tento krok odli\u0161uje T3 od T4<\/td><\/tr>
P\u0159irozen\u00e9 st\u00e1rnut\u00ed<\/td>Precipitace jemn\u00fdch shluk\u016f z zachycen\u00e9ho tuh\u00e9ho roztoku p\u0159i pokojov\u00e9 teplot\u011b<\/td>V\u011bt\u0161ina pevnosti se vyvine b\u011bhem prvn\u00edch 24 hodin; podstatn\u011b stabiln\u00ed po zhruba \u010dty\u0159ech dnech<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Praktick\u00fdm v\u00fdsledkem je plech, kter\u00fd doraz\u00ed s t\u00e9m\u011b\u0159 pln\u011b vyvinutou pevnost\u00ed, p\u0159i\u010dem\u017e si st\u00e1le zachov\u00e1v\u00e1 p\u0159ibli\u017en\u011b 18% ta\u017enosti. To je dostate\u010dn\u00e1 tv\u00e1rnost pro oh\u00fdb\u00e1n\u00ed na ohra\u0148ovac\u00edm lisu, odsazen\u00ed a tv\u00e1\u0159en\u00ed ta\u017een\u00edm, kter\u00e9 vy\u017eaduj\u00ed pr\u00e1ce s plechy v draku letadla. Nen\u00ed nutn\u00e9 \u017e\u00e1dn\u00e9 tepeln\u00e9 zpracov\u00e1n\u00ed v d\u00edln\u011b ani chlazen\u00e9 skladov\u00e1n\u00ed: materi\u00e1l lze tv\u00e1\u0159et a n\u00fdtovat v dodan\u00e9m stavu.<\/p>\n\n\n\n

T3, T4 a T351: Kl\u00ed\u010dov\u00e9 rozd\u00edly<\/h2>\n\n\n\n

Tyto t\u0159i stavy zpracov\u00e1n\u00ed spolu \u00fazce souvisej\u00ed a jsou \u010dasto zam\u011b\u0148ov\u00e1ny ve specifikac\u00edch a zad\u00e1vac\u00ed dokumentaci v r\u00e1mci rodiny 2024.<\/p>\n\n\n\n

T4 vynech\u00e1v\u00e1 krok tv\u00e1\u0159en\u00ed za studena \u2014 pouze roztokov\u00e9 \u017e\u00edh\u00e1n\u00ed a p\u0159irozen\u00e9 st\u00e1rnut\u00ed. M\u00edrn\u011b ni\u017e\u0161\u00ed pevnost, m\u00edrn\u011b vy\u0161\u0161\u00ed ta\u017enost a obvykl\u00fd stav pro ty\u010de, pruty a dr\u00e1t z 2024. Kompletn\u00ed soubor dat viz pr\u016fvodce 2024-T4.<\/p>\n\n\n\n

T3 p\u0159id\u00e1v\u00e1 tv\u00e1\u0159en\u00ed za studena, proto je v\u00fdchoz\u00edm stavem plechu pro tv\u00e1\u0159en\u00e9 a n\u00fdtovan\u00e9 konstrukce.<\/p>\n\n\n\n

T351 aplikuje stejnou logiku na desky, s t\u00edm rozd\u00edlem, \u017ee tv\u00e1\u0159en\u00ed za studena je \u0159\u00edzen\u00fd tah o 1,5\u20133%, jeho\u017e \u00fa\u010delem je odstran\u011bn\u00ed pnut\u00ed, nikoli zpevn\u011bn\u00ed. Pro tlust\u00e9 desky ur\u010den\u00e9 k obr\u00e1b\u011bn\u00ed sp\u00ed\u0161e ne\u017e pro plech k tv\u00e1\u0159en\u00ed je relevantn\u00edm pr\u016fvodcem 2024-T351.<\/p>\n\n\n\n

Mechanick\u00e9 vlastnosti 2024-T3<\/h2>\n\n\n\n

N\u00ed\u017ee uveden\u00e9 hodnoty jsou typick\u00e9 hodnoty pro hol\u00fd plech 2024-T3. Tlou\u0161\u0165ka a forma produktu je ovliv\u0148uj\u00ed, proto by konstruk\u010dn\u00ed rozhodnut\u00ed m\u011bla vych\u00e1zet z certifikovan\u00fdch hodnot na atestu z v\u00e1lcovny sp\u00ed\u0161e ne\u017e z publikovan\u00fdch pr\u016fm\u011br\u016f.<\/p>\n\n\n\n

Majetek<\/strong><\/td>Typick\u00e1 hodnota<\/strong><\/td>Pozn\u00e1mky<\/strong><\/td><\/tr>
Hustota<\/td>2,78 g\/cm\u00b3<\/td>Zhruba jedna t\u0159etina oceli<\/td><\/tr>
Pevnost v tahu<\/td>483 MPa (70 ksi)<\/td>Hol\u00fd plech; Alclad m\u00e1 ni\u017e\u0161\u00ed hodnoty<\/td><\/tr>
Mez kluzu (0,2%)<\/td>345 MPa (50 ksi)<\/td>\u010c\u00edslo, od kter\u00e9ho se odv\u00edj\u00ed v\u011bt\u0161ina konstruk\u010dn\u00edch povolen\u00fdch hodnot<\/td><\/tr>
Ta\u017enost p\u0159i p\u0159etr\u017een\u00ed<\/td>~18%<\/td>Plech 1,6 mm; kles\u00e1 s rostouc\u00ed tlou\u0161\u0165kou<\/td><\/tr>
\u00danavov\u00e1 pevnost<\/td>138 MPa<\/td>P\u0159i 5\u00d710\u2078 cyklech, rota\u010dn\u00ed ohyb<\/td><\/tr>
Pevnost ve smyku<\/td>283 MPa<\/td>D\u016fle\u017eit\u00e9 pro dimenzov\u00e1n\u00ed n\u00fdtov\u00fdch spoj\u016f<\/td><\/tr>
Modul pru\u017enosti<\/td>73,1 GPa<\/td>Prakticky konstantn\u00ed nap\u0159\u00ed\u010d stavy zpracov\u00e1n\u00ed 2024<\/td><\/tr>
Tvrdost<\/td>120 HB<\/td>Zat\u00ed\u017een\u00ed 500 kg, kuli\u010dka 10 mm<\/td><\/tr>
Tepeln\u00e1 vodivost<\/td>121 W\/m\u00b7K<\/td>Ni\u017e\u0161\u00ed ne\u017e u 6061, d\u016fsledek obsahu m\u011bdi<\/td><\/tr>
Elektrick\u00e1 vodivost<\/td>~30% IACS<\/td>St\u0159edn\u00ed a\u017e n\u00edzk\u00e1; nejedn\u00e1 se o vodi\u010dovou slitinu<\/td><\/tr>
Rozsah taven\u00ed<\/td>502\u2013638 \u00b0C<\/td>Solidus a\u017e likvidus<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Nejv\u011bt\u0161\u00ed roli zde hraj\u00ed dv\u011b \u010d\u00edsla. Kombinace 483\/345 MPa umo\u017e\u0148uje, aby plechov\u00fd panel z 2024-T3 nahradil mnohem t\u011b\u017e\u0161\u00ed ocelov\u00fd, a \u00fanavov\u00e1 pevnost 138 MPa je d\u016fvodem, pro\u010d si tato slitina udr\u017euje pozici v konstrukci tlakovan\u00e9ho trupu, kterou j\u00ed nov\u011bj\u0161\u00ed a pevn\u011bj\u0161\u00ed slitiny neodebraly. Plech trupu proch\u00e1z\u00ed tlakov\u00fdm cyklem ka\u017ed\u00fd let; odolnost proti iniciaci trhlin po statis\u00edc\u00edch t\u011bchto cykl\u016f je d\u016fle\u017eit\u011bj\u0161\u00ed ne\u017e \u0161pi\u010dkov\u00e1 pevnost v tahu.<\/p>\n\n\n\n

Jeden detail t\u00fdkaj\u00edc\u00ed se n\u00e1kupu, kter\u00fd stoj\u00ed za ov\u011b\u0159en\u00ed p\u0159ed objedn\u00e1vkou: Alclad 2024-T3 nen\u00ed tak pevn\u00fd jako hol\u00fd materi\u00e1l. Vrstvy \u010dist\u00e9ho hlin\u00edku nesou jen mal\u00e9 zat\u00ed\u017een\u00ed, tak\u017ee typick\u00e9 hodnoty Alcladu klesaj\u00ed na p\u0159ibli\u017en\u011b 448 MPa v tahu a 310 MPa v kluzu \u2014 rozd\u00edl zhruba 8\u201310%. Tenk\u00e9 tlou\u0161\u0165ky ztr\u00e1cej\u00ed proporcion\u00e1ln\u011b v\u00edce. Pokud byly povolen\u00e9 hodnoty vypo\u010dteny na z\u00e1klad\u011b vlastnost\u00ed hol\u00e9ho materi\u00e1lu, nem\u011bl by b\u00fdt pl\u00e1tovan\u00fd materi\u00e1l nahrazov\u00e1n bez p\u0159epo\u010dtu rezerv.<\/p>\n\n\n\n

Kde se 2024-T3 pou\u017e\u00edv\u00e1<\/h2>\n\n\n\n

Letectv\u00ed a kosmonautika dominuj\u00ed, a to ne s mal\u00fdm n\u00e1skokem. \u00danavov\u00e9 chov\u00e1n\u00ed a pom\u011br pevnosti k hmotnosti stoj\u00ed za n\u00e1klady na protikorozn\u00ed ochranu a n\u00fdtov\u00e9 spojov\u00e1n\u00ed, kter\u00e9 tato slitina vy\u017eaduje.<\/p>\n\n\n\n

Plechy draku letadla.<\/strong> Pl\u00e1tovan\u00fd plech Alclad 2024-T3 je klasick\u00fdm materi\u00e1lem pro trup a spodn\u00ed k\u0159\u00eddeln\u00ed potah, tv\u00e1\u0159en\u00fd do tvaru a n\u00fdtovan\u00fd k nosn\u00e9 konstrukci.<\/p>\n\n\n\n

R\u00e1my trupu, pod\u00e9ln\u00edky a \u017eebra.<\/strong> Tv\u00e1\u0159en\u00e9 plechov\u00e9 komponenty, kde je d\u00edl ohnut do tvaru p\u0159ed mont\u00e1\u017e\u00ed sp\u00ed\u0161e ne\u017e obr\u00e1b\u011bn z pln\u00e9ho materi\u00e1lu.<\/p>\n\n\n\n

Spodn\u00ed plochy k\u0159\u00eddel.<\/strong> Spodn\u00ed k\u0159\u00eddlo je tahov\u00e1 konstrukce a 2024 p\u0159ekon\u00e1v\u00e1 7075 v r\u016fstu \u00fanavov\u00fdch trhlin p\u0159i tahu. Horn\u00ed plochy, zat\u00ed\u017een\u00e9 tlakem, \u010dast\u011bji pou\u017e\u00edvaj\u00ed 7075. Srovn\u00e1n\u00ed 2024 vs 7075 podrobn\u011b pokr\u00fdv\u00e1 toto rozd\u011blen\u00ed.<\/p>\n\n\n\n

Spojovac\u00ed prvky, konzoly a kov\u00e1n\u00ed.<\/strong> Obr\u00e1b\u011bn\u00e9 nebo tv\u00e1\u0159en\u00e9 d\u00edly, kde pevnost na jednotku hmotnosti \u0159\u00edd\u00ed n\u00e1vrh.<\/p>\n\n\n\n

N\u00e1kladn\u00ed kola a hydraulick\u00e9 rozvad\u011b\u010de.<\/strong> Hlavn\u00ed neleteck\u00e1 pou\u017eit\u00ed, ob\u011b vysoce nam\u00e1han\u00e9 sou\u010d\u00e1sti, kter\u00e9 ospravedl\u0148uj\u00ed dodate\u010dn\u00e9 n\u00e1klady na povrchovou \u00fapravu.<\/p>\n\n\n\n

Motorsport a obrann\u00e9 konstrukce.<\/strong> Sestavy citliv\u00e9 na hmotnost pracuj\u00edc\u00ed v \u0159\u00edzen\u00e9m nebo chr\u00e1n\u011bn\u00e9m prost\u0159ed\u00ed.<\/p>\n\n\n\n

Kde 2024-T3 nepat\u0159\u00ed: b\u011b\u017en\u00e9 podvozkov\u00e9 pr\u00e1ce, n\u00e1mo\u0159n\u00ed armatury, sva\u0159ovan\u00e9 r\u00e1my, architektonick\u00e9 panely nebo cokoli vedouc\u00ed elektrick\u00fd proud. 5052 a 6061 tyto p\u0159\u00edpady zvl\u00e1daj\u00ed l\u00e9pe a jejich povrchov\u00e1 \u00faprava je levn\u011bj\u0161\u00ed.<\/p>\n\n\n\n

2024-T3 vs ostatn\u00ed stavy zpracov\u00e1n\u00ed 2024<\/h2>\n\n\n\n

V\u0161echny stavy zpracov\u00e1n\u00ed 2024 sd\u00edlej\u00ed stejn\u00e9 chemick\u00e9 slo\u017een\u00ed. Li\u0161\u00ed se pouze tepeln\u00e1 a mechanick\u00e1 historie, a pr\u00e1v\u011b tato historie ur\u010duje vlastnosti materi\u00e1lu a jeho vhodnost pro danou aplikaci.<\/p>\n\n\n\n

Temperament<\/strong><\/td>Mez pevnosti (MPa)<\/strong><\/td>Mez kluzu (MPa)<\/strong><\/td>Prodlou\u017een\u00ed<\/strong><\/td>Typick\u00e1 forma<\/strong><\/td><\/tr>
O (\u017e\u00edhan\u00fd)<\/td>186<\/td>76<\/td>~20%<\/td>Plech pro n\u00e1ro\u010dn\u00e9 tv\u00e1\u0159en\u00ed<\/td><\/tr>
T3<\/td>483<\/td>345<\/td>~18%<\/td>Plech, tv\u00e1\u0159en\u00fd a n\u00fdtovan\u00fd<\/td><\/tr>
T4<\/td>469<\/td>324<\/td>~19%<\/td>Ty\u010de, pruty, dr\u00e1t<\/td><\/tr>
T351<\/td>~470<\/td>~325<\/td>~19%<\/td>Desky pro obr\u00e1b\u011bn\u00ed<\/td><\/tr>
T6<\/td>~475<\/td>~393<\/td>~10%<\/td>M\u00e1lokdy skladov\u00e1no jako plech<\/td><\/tr>
T851<\/td>\u2265455<\/td>\u2265400<\/td>~5%<\/td>Fr\u00e9zovan\u00e1 deska, maxim\u00e1ln\u00ed stabilita<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

V\u0161imn\u011bte si, co tabulka neukazuje: velk\u00fd rozptyl pevnosti v tahu. Mezi stavy T3, T4, T351 a T6 se mez pevnosti pohybuje pouze o n\u011bkolik procent. V\u00fdznamn\u00e9 rozd\u00edly jsou v mezi kluzu, ta\u017enosti a rozm\u011brov\u00e9m chov\u00e1n\u00ed, a pr\u00e1v\u011b ty by m\u011bly rozhodovat o volb\u011b.<\/p>\n\n\n\n

Volba stavu zpracov\u00e1n\u00ed (temperu)<\/h2>\n\n\n\n

T3<\/strong> je standardn\u00ed volbou, kdy\u017e d\u00edl za\u010d\u00edn\u00e1 jako plech, je tvarov\u00e1n a n\u00fdtov\u00e1n \u2014 pevnost je po\u017eadov\u00e1na p\u0159i dod\u00e1n\u00ed s dostate\u010dnou ta\u017enost\u00ed pro ohyb.<\/p>\n\n\n\n

T4<\/strong> se vztahuje na ty\u010de, pruty nebo dr\u00e1t, nebo kdy\u017e je tvarov\u00e1n\u00ed natolik n\u00e1ro\u010dn\u00e9, \u017ee z\u00e1le\u017e\u00ed na vy\u0161\u0161\u00edm bodu ta\u017enosti.<\/p>\n\n\n\n

T351<\/strong> je p\u0159edeps\u00e1n pro obr\u00e1b\u011bn\u00ed siln\u00fdch desek, kde by zbytkov\u00e9 pnut\u00ed vyt\u00e1hlo d\u00edl z tolerance p\u0159i odeb\u00edr\u00e1n\u00ed materi\u00e1lu.<\/p>\n\n\n\n

T851<\/strong> se vol\u00ed, kdy\u017e obr\u00e1b\u011bn\u00fd d\u00edl z desky pot\u0159ebuje nejvy\u0161\u0161\u00ed mez kluzu a stabilitu dostupnou u slitiny 2024 a ta\u017enost 5% je p\u0159ijateln\u00e1.<\/p>\n\n\n\n

O<\/strong> se pou\u017e\u00edv\u00e1, kdy\u017e je tvarov\u00e1n\u00ed natolik n\u00e1ro\u010dn\u00e9, \u017ee by prasklo p\u0159i jak\u00e9mkoli stavu T \u2014 tvaruje se v \u017e\u00edhan\u00e9m stavu, pot\u00e9 n\u00e1sleduje rozpou\u0161t\u011bc\u00ed \u017e\u00edh\u00e1n\u00ed a st\u00e1rnut\u00ed. Pr\u016fvodce plechem 2024-O pokr\u00fdv\u00e1 tento postup.<\/p>\n\n\n\n

Je vy\u017eadov\u00e1na jin\u00e1 slitina, pokud mus\u00ed b\u00fdt sestava sva\u0159ov\u00e1na tavn\u00fdm sva\u0159ov\u00e1n\u00edm, bude ponech\u00e1na nechr\u00e1n\u011bn\u00e1 venku nebo na mo\u0159i, nebo mus\u00ed v\u00e9st v\u00fdznamn\u00fd elektrick\u00fd proud. \u017d\u00e1dn\u00fd ze stav\u016f slitiny 2024 tyto limity ne\u0159e\u0161\u00ed.<\/p>\n\n\n\n

Pr\u00e1ce s 2024-T3<\/h2>\n\n\n\n

Tvarov\u00e1n\u00ed<\/h3>\n\n\n\n

Stav T3 se tvaruje, ale nen\u00ed to 5052. Po\u010d\u00edtejte s minim\u00e1ln\u00edm polom\u011brem ohybu v rozsahu 3t a\u017e 5t v z\u00e1vislosti na tlou\u0161\u0165ce a orientaci, co\u017e je n\u011bkolikan\u00e1sobek toho, co snese plech \u0159ady 5xxx p\u0159i stejn\u00e9 tlou\u0161\u0165ce. Ohyb p\u0159\u00ed\u010dn\u011b ke sm\u011bru v\u00e1lcov\u00e1n\u00ed je tolerantn\u011bj\u0161\u00ed ne\u017e ohyb pod\u00e9l n\u011bj a v\u011bt\u0161\u00ed tlou\u0161\u0165ky vy\u017eaduj\u00ed proporcion\u00e1ln\u011b v\u011bt\u0161\u00ed polom\u011bry. Tam, kde konstrukce skute\u010dn\u011b vy\u017eaduje mal\u00fd polom\u011br, jsou obvykl\u00fdmi \u0159e\u0161en\u00edmi tvarov\u00e1n\u00ed ve stavu O a n\u00e1sledn\u00e9 tepeln\u00e9 zpracov\u00e1n\u00ed, nebo p\u0159echod na sestavu tvarovanou a n\u00e1sledn\u011b n\u00fdtovanou nam\u00edsto jedin\u00e9ho oh\u00fdban\u00e9ho d\u00edlu.<\/p>\n\n\n\n

Spojov\u00e1n\u00ed<\/h3>\n\n\n\n

Tavn\u00e9 sva\u0159ov\u00e1n\u00ed slitiny 2024 nen\u00ed praktick\u00fdm v\u00fdrobn\u00edm postupem: oblast tepeln\u00e9ho ovlivn\u011bn\u00ed je n\u00e1chyln\u00e1 k hork\u00fdm trhlin\u00e1m a stav zpracov\u00e1n\u00ed je v ka\u017ed\u00e9m p\u0159\u00edpad\u011b lok\u00e1ln\u011b zni\u010den. N\u00fdtov\u00e1n\u00ed je v\u00fdchoz\u00ed metodou, p\u0159i\u010dem\u017e \u0161roubov\u00e1n\u00ed a konstruk\u010dn\u00ed lepen\u00ed jsou dal\u0161\u00edmi dv\u011bma uzn\u00e1van\u00fdmi cestami. T\u0159ec\u00ed sva\u0159ov\u00e1n\u00ed s prom\u00edch\u00e1v\u00e1n\u00edm (FSW) na slitin\u011b 2024 funguje a odstra\u0148uje probl\u00e9m taven\u00ed, i kdy\u017e vy\u017eaduje p\u0159\u00edpravky a p\u0159\u00edstup ke spoji, kter\u00fd mnoho sestav neumo\u017e\u0148uje. V\u0161imn\u011bte si, \u017ee samotn\u00e9 n\u00fdty ze slitiny 2024 (ozna\u010den\u00ed DD) se dod\u00e1vaj\u00ed v \u010derstv\u011b rozpou\u0161t\u011bc\u00edm \u017e\u00edhan\u00e9m stavu a mus\u00ed b\u00fdt skladov\u00e1ny v chladu a n\u00fdtov\u00e1ny v omezen\u00e9m \u010dasov\u00e9m okn\u011b \u2014 toto omezen\u00ed se vztahuje na n\u00fdt, ne na plech T3, do kter\u00e9ho se n\u00fdtuje.<\/p>\n\n\n\n

Obr\u00e1b\u011bn\u00ed<\/h3>\n\n\n\n

2024-T3 se obr\u00e1b\u00ed \u010dist\u011b. Ostr\u00e9 slinut\u00e9 karbidov\u00e9 n\u00e1stroje, vysok\u00e1 \u0159ezn\u00e1 rychlost a m\u00edrn\u00fd posuv zaji\u0161\u0165uj\u00ed dobrou kontrolu t\u0159\u00edsky a jasn\u00fd povrch a slitina dob\u0159e dr\u017e\u00ed \u00fazk\u00e9 tolerance. Pro siln\u00e9 pr\u016f\u0159ezy, kde se odeb\u00edr\u00e1 velk\u00e9 mno\u017estv\u00ed materi\u00e1lu, je deska T351 lep\u0161\u00edm v\u00fdchoz\u00edm bodem, proto\u017ee odstran\u011bn\u00ed pnut\u00ed tahem udr\u017euje d\u00edl rovn\u00fd.<\/p>\n\n\n\n

Protikorozn\u00ed ochrana a povrchov\u00e9 \u00fapravy<\/h3>\n\n\n\n

Ochrana u t\u00e9to slitiny nen\u00ed voliteln\u00e1. Alclad plech s vysokou \u010distotou hlin\u00edku nav\u00e1lcovan\u00e9ho na obou stran\u00e1ch je standardn\u00edm leteck\u00fdm \u0159e\u0161en\u00edm, proto\u017ee pl\u00e1tov\u00e1n\u00ed koroduje ob\u011btn\u011b a chr\u00e1n\u00ed m\u011bd\u011bn\u00e9 j\u00e1dro. Eloxov\u00e1n\u00ed a z\u00e1kladn\u00ed nebo kryc\u00ed n\u00e1t\u011brov\u00e9 syst\u00e9my jsou alternativami pro nepl\u00e1tovan\u00fd materi\u00e1l. Jeden bod specifick\u00fd pro d\u00edly kritick\u00e9 z hlediska \u00fanavy: konven\u010dn\u00ed eloxov\u00e1n\u00ed v kyselin\u011b s\u00edrov\u00e9 p\u0159in\u00e1\u0161\u00ed m\u011b\u0159iteln\u00fd \u00fanavov\u00fd deficit, proto bylo pro leteck\u00e9 d\u00edly z 2024 tradi\u010dn\u011b p\u0159edepisov\u00e1no tenk\u00e9 eloxov\u00e1n\u00ed v kyselin\u011b chromov\u00e9 a proto b\u00f3r-s\u00edrov\u00e9 a tenkovrstv\u00e9 s\u00edrov\u00e9 procesy p\u0159evzaly roli s omezen\u00edm pou\u017eit\u00ed chrom\u00e1t\u016f. Tak\u00e9 sledujte galvanick\u00e9 p\u00e1ry \u2014 2024 v kontaktu s ocelov\u00fdmi spojovac\u00edmi prvky nebo uhl\u00edkov\u00fdmi vl\u00e1kny vy\u017eaduje izola\u010dn\u00ed vrstvu.<\/p>\n\n\n\n

V\u00fdhody a omezen\u00ed<\/h2>\n\n\n\n
V\u00fdhoda<\/strong><\/td>Omezen\u00ed<\/strong><\/td><\/tr>
483 MPa pevnost v tahu p\u0159i 2,78 g\/cm\u00b3, jeden z nejlep\u0161\u00edch pom\u011br\u016f pevnosti k hmotnosti u komer\u010dn\u00edch hlin\u00edkov\u00fdch slitin<\/td>\u0160patn\u00e1 odolnost proti korozi; pl\u00e1tov\u00e1n\u00ed, eloxov\u00e1n\u00ed nebo n\u00e1t\u011br jsou v provozu povinn\u00e9<\/td><\/tr>
138 MPa \u00fanavov\u00e1 pevnost, dob\u0159e vhodn\u00e1 pro cyklicky zat\u011b\u017eovan\u00e9 konstrukce<\/td>Nesva\u0159iteln\u00e1 tavn\u00fdmi metodami; sestavy mus\u00ed b\u00fdt n\u00fdtov\u00e1ny, \u0161roubov\u00e1ny nebo lepeny<\/td><\/tr>
~18% ta\u017enost, dostate\u010dn\u00e1 pro tvarov\u00e1n\u00ed n\u00fdtovan\u00e9 plechov\u00e9 konstrukce<\/td>Polom\u011bry ohybu 3t a\u017e 5t; u\u017e\u0161\u00ed geometrie vy\u017eaduje tvarov\u00e1n\u00ed ve stavu O a n\u00e1sledn\u00e9 tepeln\u00e9 zpracov\u00e1n\u00ed<\/td><\/tr>
Obr\u00e1b\u00ed se \u010dist\u011b a dr\u017e\u00ed tolerance<\/td>~30% vodivost IACS ji vylu\u010duje pro d\u00edly vedouc\u00ed elektrick\u00fd proud<\/td><\/tr>
\u0160iroce p\u0159edepisovan\u00e1 a dob\u0159e charakterizovan\u00e1, tak\u017ee konstruk\u010dn\u00ed data jsou snadno dostupn\u00e1<\/td>Stoj\u00ed v\u00edce ne\u017e 5052 nebo 6061 a povrchov\u00e9 \u00fapravy to d\u00e1le zvy\u0161uj\u00ed<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Z\u00e1v\u011br<\/h2>\n\n\n\n

2024-T3 kombinuje vysokou dod\u00e1vanou pevnost, odolnost proti \u00fanav\u011b a dostate\u010dnou ta\u017enost pro tvarovanou a n\u00fdtovanou plechovou konstrukci, ale kompromisy jsou stejn\u011b jasn\u011b definovan\u00e9: protikorozn\u00ed ochrana je povinn\u00e1, tavn\u00e9 sva\u0159ov\u00e1n\u00ed nen\u00ed praktick\u00fdm v\u00fdrobn\u00edm postupem a polom\u011bry ohybu 3t a\u017e 5t omezuj\u00ed geometrii \u2014 tam, kde tato omezen\u00ed vyhovuj\u00ed d\u00edlu, se jen m\u00e1lo slitin vyrovn\u00e1, a tam, kde nevyhovuj\u00ed, je 6061 nebo 5052 prakti\u010dt\u011bj\u0161\u00ed volbou p\u0159i ni\u017e\u0161\u00edch celkov\u00fdch n\u00e1kladech. Zaji\u0161t\u011bn\u00ed spr\u00e1vn\u00e9ho stavu zpracov\u00e1n\u00ed a tlou\u0161\u0165ky s \u00faplnou dokumentac\u00ed z\u016fst\u00e1v\u00e1 b\u011b\u017enou v\u00fdzvou p\u0159i n\u00e1kupu. <\/p>\n\n\n\n

Spole\u010dnost Linsy dod\u00e1v\u00e1 slitinu 2024 ve stavu T3 a dal\u0161\u00edch standardn\u00edch stavech ve form\u011b plechu, desky, ty\u010de, trubky a dr\u00e1tu, s atesty z v\u00e1lcovny ke ka\u017ed\u00e9 objedn\u00e1vce, vlastn\u00ed v\u00fdrobou s n\u00edzk\u00fdm minim\u00e1ln\u00edm mno\u017estv\u00edm objedn\u00e1vky a certifikac\u00ed ISO 9001, ISO 14001 a ISO 45001, s protokoly SGS na vy\u017e\u00e1d\u00e1n\u00ed a typick\u00fdmi dodac\u00edmi lh\u016ftami 10 a\u017e 60 dn\u00ed v z\u00e1vislosti na form\u011b a mno\u017estv\u00ed. Prohl\u00e9dn\u011bte si specifikaci 2024-T3 pro certifikovan\u00e1 data vlastnost\u00ed podle tlou\u0161\u0165ky a stavu zpracov\u00e1n\u00ed, nebo kontaktujte spole\u010dnost Linsy pro potvrzen\u00ed dostupnosti skladov\u00fdch z\u00e1sob a mo\u017enost\u00ed vlastn\u00ed v\u00fdroby pro c\u00edlovou aplikaci.<\/p>\n\n\n\n

\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n\n\n\n
\n
\n
\n
Je 2024-T3 stejn\u00e9 jako 2024-T351?<\/strong><\/h6>\n
<\/div>
<\/div><\/div><\/div><\/div>\n\n\n\n
\n

Jsou si bl\u00edzk\u00e9, ale nejsou zam\u011bniteln\u00e9. Oba jsou rozpou\u0161t\u011bc\u00edm \u017e\u00edh\u00e1ny, tv\u00e1\u0159eny za studena a p\u0159irozen\u011b st\u00e1rnuty. U stavu T351 je tv\u00e1\u0159en\u00ed za studena \u0159\u00edzen\u00fdm tahem o 1,5\u20133% aplikovan\u00fdm specificky pro odstran\u011bn\u00ed zbytkov\u00e9ho pnut\u00ed a toto ozna\u010den\u00ed se b\u011b\u017en\u011b vztahuje na desky. T3 je stav pro plech, kde tv\u00e1\u0159en\u00ed za studena p\u0159edstavuje v\u00e1lcov\u00e1n\u00ed nebo rovn\u00e1n\u00ed zam\u011b\u0159en\u00e9 na pevnost. Typick\u00e9 pevnosti se pohybuj\u00ed v rozmez\u00ed n\u011bkolika procent od sebe; d\u016fvodem pro p\u0159edeps\u00e1n\u00ed T351 je rozm\u011brov\u00e1 stabilita b\u011bhem obr\u00e1b\u011bn\u00ed, nikoli vy\u0161\u0161\u00ed pevnost.<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n

\n
\n
Lze 2024-T3 sva\u0159ovat?<\/strong><\/h6>\n
<\/div>
<\/div><\/div><\/div><\/div>\n\n\n\n
\n

Ne tavn\u00fdmi metodami v \u017e\u00e1dn\u00e9m praktick\u00e9m v\u00fdrobn\u00edm smyslu. Oblast tepeln\u00e9ho ovlivn\u011bn\u00ed je n\u00e1chyln\u00e1 k hork\u00fdm trhlin\u00e1m a stav T3 je teplem sva\u0159ov\u00e1n\u00ed v ka\u017ed\u00e9m p\u0159\u00edpad\u011b lok\u00e1ln\u011b zni\u010den. N\u00fdtov\u00e1n\u00ed, \u0161roubov\u00e1n\u00ed a konstruk\u010dn\u00ed lepen\u00ed jsou uzn\u00e1van\u00e9 cesty. T\u0159ec\u00ed sva\u0159ov\u00e1n\u00ed s prom\u00edch\u00e1v\u00e1n\u00edm je technicky provediteln\u00e9, proto\u017ee z\u016fst\u00e1v\u00e1 pod bodem taven\u00ed, ale vy\u017eaduje p\u0159\u00edpravky a p\u0159\u00edstup ke spoji, kter\u00e9 v\u011bt\u0161ina plechov\u00fdch sestav nem\u016f\u017ee poskytnout.<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n

\n
\n
Kolik stoj\u00ed 2024-T351 ve srovn\u00e1n\u00ed s T3?<\/h6>\n
<\/div>
<\/div><\/div><\/div><\/div>\n\n\n\n
\n

Cenov\u00e1 p\u0159ir\u00e1\u017eka T351 oproti T3 je obecn\u011b 5\u201315 %, co\u017e je d\u00e1no dodate\u010dnou operac\u00ed protahov\u00e1n\u00ed. U tlust\u00fdch desek (nad 25 mm) se p\u0159ir\u00e1\u017eka zu\u017euje, proto\u017ee T3 je u t\u011bchto tlou\u0161t\u011bk z\u0159\u00eddka specifikov\u00e1n \u2014 T351 je v\u00fdchoz\u00edm leteck\u00fdm temperem. Skute\u010dn\u00e9 srovn\u00e1n\u00ed n\u00e1klad\u016f nen\u00ed T351 vs T3, ale T351 vs n\u00e1klady na se\u0161rotov\u00e1n\u00ed deformovan\u00e9ho d\u00edlu z T3 po obr\u00e1b\u011bn\u00ed.<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n

\n
\n
Jak\u00fd minim\u00e1ln\u00ed polom\u011br ohybu m\u00e1m navrhnout pro plech 2024-T3?<\/strong><\/h6>\n
<\/div>
<\/div><\/div><\/div><\/div>\n\n\n\n
\n

P\u0159ibli\u017en\u011b 3t a\u017e 5t, v z\u00e1vislosti na tlou\u0161\u0165ce a orientaci ohybu, p\u0159i\u010dem\u017e p\u0159\u00ed\u010dn\u00e9 ohyby jsou tolerantn\u011bj\u0161\u00ed ne\u017e pod\u00e9ln\u00e9. P\u0159ed uvoln\u011bn\u00edm n\u00e1stroj\u016f ov\u011b\u0159te \u00fadaje dodavatele pro konkr\u00e9tn\u00ed tlou\u0161\u0165ku. Pokud konstrukce vy\u017eaduje n\u011bco t\u011bsn\u011bj\u0161\u00edho, tvarujte d\u00edl ve stavu O a po tvarov\u00e1n\u00ed jej tepeln\u011b zpracujte na stav T.<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n

\n
\n
Vy\u017eaduje 2024-T3 chlazen\u00e9 skladov\u00e1n\u00ed nebo op\u011btovn\u00e9 st\u00e1rnut\u00ed po dod\u00e1n\u00ed?<\/strong><\/strong><\/h6>\n
<\/div>
<\/div><\/div><\/div><\/div>\n\n\n\n
\n

Ne. Materi\u00e1l ve stavu T3 je p\u0159ed expedic\u00ed p\u0159irozen\u011b vytvrzen do podstatn\u011b stabiln\u00edho stavu, tak\u017ee m\u016f\u017ee b\u00fdt skladov\u00e1n a zpracov\u00e1v\u00e1n p\u0159i pokojov\u00e9 teplot\u011b bez ztr\u00e1ty pevnosti. Po\u017eadavek na chlazen\u00ed, kter\u00fd si lid\u00e9 spojuj\u00ed se slitinou 2024, se vztahuje na \u010derstv\u011b rozpou\u0161t\u011bc\u00edm \u017e\u00edhan\u00e9 n\u00fdty, co\u017e je zcela jin\u00fd stav produktu.<\/p>\n<\/div><\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

What Is 2024 Aluminum? 2024 is the copper-based workhorse of the 2xxx series. Copper at 3.8\u20134.9%, with magnesium at 1.2\u20131.8% and manganese at 0.3\u20130.9%, makes the alloy heat-treatable: fine precipitates form inside the metal and pin dislocations, and that is where the strength comes from. In its stronger tempers 2024 carries loads that would otherwise […]<\/p>\n","protected":false},"author":1,"featured_media":6792,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"2024-T3 Aluminum: Properties, Strength and T3 vs T4 vs T6","_seopress_titles_desc":"2024-T3 aluminum delivers high strength and fatigue resistance for aerospace structures. See its properties, composition, and how T3 compares with T4 and T6 tempers.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","footnotes":""},"categories":[174],"tags":[],"class_list":["post-6800","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-2000-series-aluminum"],"_links":{"self":[{"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/posts\/6800","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/comments?post=6800"}],"version-history":[{"count":2,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/posts\/6800\/revisions"}],"predecessor-version":[{"id":10270,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/posts\/6800\/revisions\/10270"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/media\/6792"}],"wp:attachment":[{"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/media?parent=6800"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/categories?post=6800"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/tags?post=6800"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}