{"id":28752,"date":"2025-12-22T09:50:14","date_gmt":"2025-12-22T01:50:14","guid":{"rendered":"https:\/\/sinoextrud.com\/?p=28752"},"modified":"2025-12-22T09:50:14","modified_gmt":"2025-12-22T01:50:14","slug":"rychlost-tepelne-roztaznosti-hlinikoveho-vylisku","status":"publish","type":"post","link":"https:\/\/sinoextrud.com\/cs\/aluminum-extrusion-thermal-expansion-rate\/","title":{"rendered":"M\u00edra tepeln\u00e9 rozta\u017enosti hlin\u00edkov\u00e9ho v\u00fdlisku?"},"content":{"rendered":"

\"eloxovan\u00fd
eloxovan\u00fd a pr\u00e1\u0161kov\u011b lakovan\u00fd hlin\u00edkov\u00fd v\u00fdlisek s T-dr\u00e1\u017ekou<\/figcaption><\/figure>\n<\/p>\n

Tepeln\u00e1 rozta\u017enost se \u010dasto skr\u00fdv\u00e1, dokud nezp\u016fsob\u00ed praskliny, hluk nebo nesouosost. Mnoho kupuj\u00edc\u00edch si j\u00ed v\u0161imne a\u017e po instalaci. Toto t\u00e9ma si zaslou\u017e\u00ed jasn\u00e9 odpov\u011bdi d\u0159\u00edve, ne\u017e se objev\u00ed probl\u00e9my.<\/p>\n

Teplotn\u00ed rozta\u017enost hlin\u00edkov\u00fdch v\u00fdlisk\u016f vysv\u011btluje, jak moc se m\u011bn\u00ed d\u00e9lka profilu p\u0159i zm\u011bn\u011b teploty. Pochopen\u00ed t\u00e9to rychlosti pom\u00e1h\u00e1 p\u0159edch\u00e1zet deformac\u00edm, nap\u011bt\u00ed a poruch\u00e1m v re\u00e1ln\u00fdch projektech.<\/strong><\/p>\n

Tento p\u0159edm\u011bt propojuje v\u011bdu o materi\u00e1lech s re\u00e1ln\u00fdm stavebn\u00edm a pr\u016fmyslov\u00fdm vyu\u017eit\u00edm. Znalost z\u00e1klad\u016f nesta\u010d\u00ed. D\u016fle\u017eit\u00e9 je, jak se toto chov\u00e1n\u00ed projev\u00ed v ka\u017edodenn\u00ed v\u00fdrob\u011b a ve velk\u00fdch konstrukc\u00edch.<\/p>\n

Jak\u00e1 je pr\u016fm\u011brn\u00e1 tepeln\u00e1 rozta\u017enost v\u00fdlisk\u016f?<\/h2>\n

\"Obr\u00e1b\u011bn\u00fd
Obr\u00e1b\u011bn\u00fd hlin\u00edkov\u00fd v\u00fdlisek<\/figcaption><\/figure>\n<\/p>\n

Tepeln\u00fd pohyb m\u016f\u017ee po\u0161kodit spoje a sestavy, pokud se ignoruje. Mnoho projekt\u016f selh\u00e1v\u00e1, proto\u017ee projektanti p\u0159edpokl\u00e1daj\u00ed, \u017ee kov z\u016fstane stabiln\u00ed. Hlin\u00edk se takto nechov\u00e1.<\/p>\n

Pr\u016fm\u011brn\u00e1 tepeln\u00e1 rozta\u017enost hlin\u00edkov\u00fdch v\u00fdlisk\u016f je p\u0159ibli\u017en\u011b 23 x 10^-6 na stupe\u0148 Celsia. To znamen\u00e1, \u017ee jeden metr hlin\u00edku se zv\u011bt\u0161\u00ed p\u0159ibli\u017en\u011b o 0,023 mm p\u0159i ka\u017ed\u00e9m zv\u00fd\u0161en\u00ed teploty o 1 C.<\/strong><\/p>\n

Tato hodnota se zd\u00e1 b\u00fdt mal\u00e1, ale p\u0159i velk\u00fdch d\u00e9lk\u00e1ch a v \u0161irok\u00e9m rozsahu teplot se tento efekt st\u00e1v\u00e1 velk\u00fdm. U projekt\u016f vytla\u010dov\u00e1n\u00ed dosahuj\u00ed profily \u010dasto n\u011bkolika metr\u016f. P\u0159i venkovn\u00edm pou\u017eit\u00ed m\u016f\u017ee doch\u00e1zet k v\u00fdkyv\u016fm teplot o v\u00edce ne\u017e 50 C. To vytv\u00e1\u0159\u00ed viditeln\u00e9 a m\u011b\u0159iteln\u00e9 pohyby.<\/p>\n

Pro\u010d hlin\u00edk expanduje v\u00edce ne\u017e ocel<\/h3>\n

Atomy hlin\u00edku se p\u0159i zah\u0159\u00edv\u00e1n\u00ed v\u00edce pohybuj\u00ed. Krystalov\u00e1 struktura umo\u017e\u0148uje v\u011bt\u0161\u00ed zm\u011bny rozestup\u016f ve srovn\u00e1n\u00ed s ocel\u00ed. Proto je hlin\u00edk na teplo reaktivn\u011bj\u0161\u00ed, i kdy\u017e se rychle ochlazuje.<\/p>\n

V praxi tato vlastnost p\u0159in\u00e1\u0161\u00ed jak v\u00fdhody, tak rizika. Hlin\u00edk je odoln\u00fd proti prask\u00e1n\u00ed p\u0159i tepeln\u00e9m \u0161oku. Pot\u0159ebuje v\u0161ak prostor pro pohyb.<\/p>\n

Typick\u00e9 hodnoty roz\u0161\u00ed\u0159en\u00ed v re\u00e1ln\u00fdch projektech<\/h3>\n

N\u00ed\u017ee je uvedena jednoduch\u00e1 tabulka pou\u017e\u00edvan\u00e1 v ran\u00fdch f\u00e1z\u00edch n\u00e1vrhu. Pom\u00e1h\u00e1 kupuj\u00edc\u00edm odhadnout pohyb p\u0159ed fin\u00e1ln\u00edmi v\u00fdkresy.<\/p>\n\n\n\n\n\n\n\n
D\u00e9lka v\u00fdlisku<\/th>\nZm\u011bna teploty<\/th>\nCelkov\u00e9 roz\u0161\u00ed\u0159en\u00ed<\/th>\n<\/tr>\n<\/thead>\n
1 metr<\/td>\n30 C<\/td>\n0,69 mm<\/td>\n<\/tr>\n
3 metry<\/td>\n40 C<\/td>\n2,76 mm<\/td>\n<\/tr>\n
6 metr\u016f<\/td>\n50 C<\/td>\n6,90 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Tato \u010d\u00edsla jsou pr\u016fm\u011brn\u00e1. Povrchov\u00e1 \u00faprava, slitina a stav nap\u011bt\u00ed mohou v\u00fdsledek m\u00edrn\u011b zm\u011bnit. P\u0159esto tato tabulka zabra\u0148uje b\u011b\u017en\u00fdm chyb\u00e1m.<\/p>\n

Pro\u010d jsou pr\u016fm\u011brn\u00e9 hodnoty pouze v\u00fdchoz\u00edm bodem<\/h3>\n

Pr\u016fm\u011brn\u00e9 sazby nenahrazuj\u00ed technick\u00e9 kontroly. Pom\u00e1haj\u00ed p\u0159i v\u010dasn\u00e9m rozhodov\u00e1n\u00ed. Kone\u010dn\u00e9 n\u00e1vrhy pot\u0159ebuj\u00ed p\u0159\u00eddavn\u00e9 dr\u00e1\u017eky, posuvn\u00e9 spoje nebo pru\u017en\u00e9 spojky.<\/p>\n

Ve vytla\u010dovac\u00edch z\u00e1vodech m\u00e1 tato rychlost vliv tak\u00e9 na toleranci \u0159ez\u00e1n\u00ed. Profily \u0159ezan\u00e9 p\u0159i vysok\u00e9 teplot\u011b se mohou po ochlazen\u00ed smr\u0161\u0165ovat. Dobr\u00e9 d\u00edlny s t\u00edm p\u0159i v\u00fdrob\u011b po\u010d\u00edtaj\u00ed.<\/p>\n

<\/svg> Hlin\u00edkov\u00e9 v\u00fdlisky se p\u0159i zm\u011bn\u00e1ch teploty znateln\u011b rozp\u00ednaj\u00ed, zejm\u00e9na u dlouh\u00fdch profil\u016f.<\/b>Pravda<\/span><\/p>

Rychlost rozta\u017enosti hlin\u00edku zp\u016fsobuje m\u011b\u0159iteln\u00e9 zm\u011bny d\u00e9lky p\u0159i zm\u011bn\u011b teploty a tento efekt roste s d\u00e9lkou profilu.<\/p><\/div>
\n

<\/svg> Tepelnou rozta\u017enost hlin\u00edkov\u00fdch v\u00fdlisk\u016f lze u venkovn\u00edch konstrukc\u00ed obvykle ignorovat.<\/b>False<\/span><\/p>

Venkovn\u00ed konstrukce \u010dasto \u010del\u00ed velk\u00e9mu teplotn\u00edmu rozmez\u00ed, tak\u017ee dilatace je kritick\u00fdm faktorem n\u00e1vrhu.<\/p><\/div><\/p>\n

Jak ovliv\u0148uje slo\u017een\u00ed slitiny rychlost expanze?<\/h2>\n

\"Hlin\u00edkov\u00fd
Hlin\u00edkov\u00fd profil pro osobn\u00ed a n\u00e1kladn\u00ed automobily<\/figcaption><\/figure>\n<\/p>\n

Mnoho kupuj\u00edc\u00edch p\u0159edpokl\u00e1d\u00e1, \u017ee se v\u0161echen hlin\u00edk chov\u00e1 stejn\u011b. Nen\u00ed to pravda. V\u00fdb\u011br slitiny m\u011bn\u00ed tepeln\u00e9 chov\u00e1n\u00ed mal\u00fdmi, ale d\u016fle\u017eit\u00fdmi zp\u016fsoby.<\/p>\n

Slo\u017een\u00ed slitiny m\u00edrn\u011b m\u011bn\u00ed rychlost tepeln\u00e9 rozta\u017enosti, ale u b\u011b\u017en\u00fdch extruzn\u00edch slitin, jako jsou 6063 a 6061, je rozd\u00edl obvykle v \u00fazk\u00e9m rozmez\u00ed.<\/strong><\/p>\n

Z\u00e1kladn\u00edm kovem je hlin\u00edk. Leguj\u00edc\u00ed prvky upravuj\u00ed pevnost, tvrdost a odolnost proti korozi. Ovliv\u0148uj\u00ed tak\u00e9 vzd\u00e1lenost atom\u016f.<\/p>\n

Srovn\u00e1n\u00ed b\u011b\u017en\u00fdch vytla\u010dovac\u00edch slitin<\/h3>\n

6063 a 6061 jsou \u0161iroce pou\u017e\u00edv\u00e1ny. Ob\u011b pat\u0159\u00ed do skupiny hlin\u00edkoho\u0159\u010d\u00edk-k\u0159em\u00edk. Jejich rozta\u017enost je bl\u00edzk\u00e1, ale ne stejn\u00e1.<\/p>\n\n\n\n\n\n\n
Slitina<\/th>\nTypick\u00e1 rychlost expanze (na C)<\/th>\nB\u011b\u017en\u00e9 pou\u017eit\u00ed<\/th>\n<\/tr>\n<\/thead>\n
6063<\/td>\n~23.5 x 10^-6<\/td>\nArchitektonick\u00e9 profily<\/td>\n<\/tr>\n
6061<\/td>\n~23.1 x 10^-6<\/td>\nKonstruk\u010dn\u00ed a pr\u016fmyslov\u00e9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Na pap\u00ed\u0159e vypad\u00e1 rozd\u00edl mal\u00fd. V desetimetrov\u00e9 konstrukci s velk\u00fdmi tepeln\u00fdmi v\u00fdkyvy m\u00e1 i tento rozd\u00edl v\u00fdznam, pokud jsou tolerance p\u0159\u00edsn\u00e9.<\/p>\n

\u00daloha popou\u0161t\u011bn\u00ed a tepeln\u00e9ho zpracov\u00e1n\u00ed<\/h3>\n

Teplota jako T5 nebo T6 m\u011bn\u00ed vnit\u0159n\u00ed pnut\u00ed. Nem\u011bn\u00ed v\u00fdrazn\u011b rychlost expanze, ale ovliv\u0148uje zp\u016fsob, jak\u00fdm vznik\u00e1 nap\u011bt\u00ed p\u0159i pohybu.<\/p>\n

Profil ve stavu T6 l\u00e9pe odol\u00e1v\u00e1 deformac\u00edm. Pokud je v\u0161ak expanze blokov\u00e1na, vnit\u0159n\u00ed nap\u011bt\u00ed se zvy\u0161uje. To m\u016f\u017ee zp\u016fsobit ohyb nebo selh\u00e1n\u00ed spoje.<\/p>\n

Pro\u010d je volba slitiny st\u00e1le d\u016fle\u017eit\u00e1 pro \u0159\u00edzen\u00ed expanze<\/h3>\n

I kdy\u017e jsou rozd\u00edly v m\u00ed\u0159e expanze mal\u00e9, volba slitiny souvis\u00ed s dal\u0161\u00edmi faktory. Pevnost umo\u017e\u0148uje del\u0161\u00ed rozp\u011bt\u00ed. Povrchov\u00e1 \u00faprava ovliv\u0148uje absorpci tepla. Tmav\u011b eloxovan\u00e9 profily se na slunci zah\u0159\u00edvaj\u00ed rychleji.<\/p>\n

N\u00e1vrh\u00e1\u0159i by nem\u011bli odd\u011blovat expanzi od v\u00fdb\u011bru jin\u00fdch materi\u00e1l\u016f. V\u0161echna rozhodnut\u00ed se vz\u00e1jemn\u011b ovliv\u0148uj\u00ed.<\/p>\n

<\/svg> R\u016fzn\u00e9 hlin\u00edkov\u00e9 slitiny pro vytla\u010dov\u00e1n\u00ed maj\u00ed shodn\u00e9 chov\u00e1n\u00ed p\u0159i tepeln\u00e9 rozta\u017enosti.<\/b>False<\/span><\/p>

B\u011b\u017en\u00e9 slitiny jako 6063 a 6061 jsou si sice podobn\u00e9, ale maj\u00ed m\u00edrn\u011b odli\u0161n\u00e9 m\u00edry rozta\u017enosti, co\u017e m\u016f\u017ee m\u00edt v\u00fdznam p\u0159i p\u0159esn\u00e9m n\u00e1vrhu.<\/p><\/div>
\n

<\/svg> V\u00fdb\u011br slitiny m\u00e1 vliv nejen na pevnost, ale tak\u00e9 na to, jak je zvl\u00e1dnuto nap\u011bt\u00ed zp\u016fsoben\u00e9 tepelnou rozta\u017enost\u00ed.<\/b>Pravda<\/span><\/p>

Vlastnosti slitiny maj\u00ed vliv na to, jak vznik\u00e1 dilata\u010dn\u00ed nap\u011bt\u00ed a jak profil reaguje p\u0159i nam\u00e1h\u00e1n\u00ed.<\/p><\/div><\/p>\n

Lze u velk\u00fdch konstrukc\u00ed kontrolovat expanzi?<\/h2>\n

\"Kulat\u00e9
Kulat\u00e9 hlin\u00edkov\u00e9 v\u00fdlisky Trubkov\u00e9 CNC oh\u00fdb\u00e1n\u00ed<\/figcaption><\/figure>\n<\/p>\n

Velk\u00e9 hlin\u00edkov\u00e9 konstrukce \u010dasto selh\u00e1vaj\u00ed nikoliv v d\u016fsledku zat\u00ed\u017een\u00ed, ale v d\u016fsledku omezen\u00e9ho pohybu. Kontrola rozta\u017enosti nespo\u010d\u00edv\u00e1 v zastaven\u00ed pohybu. Jde o jeho usm\u011br\u0148ov\u00e1n\u00ed.<\/p>\n

Tepelnou rozta\u017enost nelze odstranit, ale lze ji regulovat pomoc\u00ed konstruk\u010dn\u00edch prvk\u016f, jako jsou dilata\u010dn\u00ed sp\u00e1ry, posuvn\u00e9 spoje a spr\u00e1vn\u00e9 rozte\u010de.<\/strong><\/p>\n

Tento princip plat\u00ed pro obvodov\u00e9 st\u011bny, sol\u00e1rn\u00ed r\u00e1my, dopravn\u00ed syst\u00e9my a pr\u016fmyslov\u00e9 linky.<\/p>\n

Konstruk\u010dn\u00ed metody pou\u017e\u00edvan\u00e9 ve velk\u00fdch vytla\u010dovac\u00edch syst\u00e9mech<\/h3>\n

Nej\u010dast\u011bj\u0161\u00edm \u0159e\u0161en\u00edm je p\u0159\u00edsp\u011bvek. Profily jsou v jednom bod\u011b pevn\u00e9 a v jin\u00fdch se mohou posouvat. T\u00edm se zabr\u00e1n\u00ed vzniku nap\u011bt\u00ed.<\/p>\n

Mezi b\u011b\u017en\u00e9 metody pat\u0159\u00ed:<\/p>\n

    \n
  • Dr\u00e1\u017ekovan\u00e9 otvory m\u00edsto kulat\u00fdch<\/li>\n
  • Plovouc\u00ed dr\u017e\u00e1ky<\/li>\n
  • Gumov\u00e9 nebo polymerov\u00e9 distan\u010dn\u00ed vlo\u017eky<\/li>\n
  • Teleskopick\u00e1 konstrukce profilu<\/li>\n<\/ul>\n

    P\u0159\u00edklad z pr\u016fmyslov\u00fdch r\u00e1m\u016f<\/h3>\n

    U dlouh\u00fdch dopravn\u00edkov\u00fdch r\u00e1m\u016f mohou hlin\u00edkov\u00e9 v\u00fdlisky p\u0159esahovat 20 metr\u016f. R\u00e1m je ukotven ve st\u0159edu. Oba konce se mohou voln\u011b pohybovat. T\u00edm se vyrovn\u00e1v\u00e1 rozta\u017enost v obou sm\u011brech.<\/p>\n

    Ignorov\u00e1n\u00ed t\u00e9to metody vede k proh\u00fdb\u00e1n\u00ed nebo hluku b\u011bhem denn\u00edch teplotn\u00edch cykl\u016f.<\/p>\n

    Povrchov\u00e1 \u00faprava a tepeln\u00e9 chov\u00e1n\u00ed<\/h3>\n

    Povrchov\u00e1 \u00faprava m\u011bn\u00ed rychlost pronik\u00e1n\u00ed tepla do profilu. Tmav\u00e9 povrchy absorbuj\u00ed v\u00edce tepla. Sv\u011btl\u00e9 povrchov\u00e9 \u00fapravy odr\u00e1\u017eej\u00ed v\u00edce slune\u010dn\u00edho sv\u011btla.<\/p>\n

    T\u00edm se rychlost expanze nem\u011bn\u00ed. M\u011bn\u00ed se jen teplotn\u00ed rozsah. V\u011bt\u0161\u00ed teplotn\u00ed v\u00fdkyv znamen\u00e1 v\u011bt\u0161\u00ed pohyb.<\/p>\n

    Na kvalit\u011b instalace z\u00e1le\u017e\u00ed stejn\u011b jako na designu<\/h3>\n

    I dobr\u00e1 konstrukce sel\u017ee, pokud mont\u00e9\u0159i \u0161rouby p\u0159\u00edli\u0161 ut\u00e1hnou. \u0160rouby by m\u011bly umo\u017e\u0148ovat pohyb v pl\u00e1novan\u00fdch m\u00edstech. Kontrola kroutic\u00edho momentu a jasn\u00e9 pokyny jsou rozhoduj\u00edc\u00ed.<\/p>\n

    U exportn\u00edch projekt\u016f se podm\u00ednky instalace li\u0161\u00ed podle zem\u011b. Jasn\u00e9 v\u00fdkresy sni\u017euj\u00ed riziko.<\/p>\n

    <\/svg> Tepeln\u00e1 rozta\u017enost hlin\u00edkov\u00fdch konstrukc\u00ed mus\u00ed b\u00fdt povolena, nikoli zcela omezena.<\/b>Pravda<\/span><\/p>

    Umo\u017en\u011bn\u00ed \u0159\u00edzen\u00e9ho pohybu zabra\u0148uje nam\u00e1h\u00e1n\u00ed, deformaci a poruch\u00e1m velk\u00fdch hlin\u00edkov\u00fdch vytla\u010dovac\u00edch syst\u00e9m\u016f.<\/p><\/div>
    \n

    <\/svg> Pou\u017eit\u00ed siln\u011bj\u0161\u00edch hlin\u00edkov\u00fdch profil\u016f eliminuje pot\u0159ebu dilata\u010dn\u00edch p\u0159\u00eddavk\u016f.<\/b>False<\/span><\/p>

    Tlou\u0161\u0165ka profilu nezastav\u00ed tepelnou rozta\u017enost; m\u011bn\u00ed pouze tuhost, nikoliv pohyb.<\/p><\/div><\/p>\n

    Kter\u00e9 testy ov\u011b\u0159uj\u00ed expanzn\u00ed chov\u00e1n\u00ed za tepla?<\/h2>\n

    \"Hlin\u00edkov\u00fd
    Hlin\u00edkov\u00fd v\u00fdlisek 6061 6082 Automobilov\u00fd n\u00e1razn\u00edk Beam<\/figcaption><\/figure>\n<\/p>\n

    Tepeln\u00e9 chov\u00e1n\u00ed by se nem\u011blo op\u00edrat pouze o teorii. Testov\u00e1n\u00ed potvrzuje p\u0159edpoklady p\u0159ed s\u00e9riovou v\u00fdrobou nebo instalac\u00ed.<\/p>\n

    Teplotn\u00ed rozta\u017enost se ov\u011b\u0159uje pomoc\u00ed laboratorn\u00edch zkou\u0161ek, jako jsou dilatometrick\u00e9 zkou\u0161ky, zkou\u0161ky tepeln\u00fdm cyklem a m\u011b\u0159en\u00ed \u0159\u00edzen\u00fdm oh\u0159evem.<\/strong><\/p>\n

    Tyto testy poskytuj\u00ed \u00fadaje pro konstrukt\u00e9ry a n\u00e1kup\u010d\u00ed.<\/p>\n

    Jednoduch\u00e9 vysv\u011btlen\u00ed testov\u00e1n\u00ed dilatometrem<\/h3>\n

    Dilatometr m\u011b\u0159\u00ed zm\u011bnu d\u00e9lky p\u0159i \u0159\u00edzen\u00e9m zah\u0159\u00edv\u00e1n\u00ed. Mal\u00fd vzorek se zah\u0159\u00edv\u00e1 st\u00e1lou rychlost\u00ed. Senzory sleduj\u00ed rozp\u00edn\u00e1n\u00ed.<\/p>\n

    Tato zkou\u0161ka poskytuje p\u0159esn\u00e9 koeficienty rozta\u017enosti. Pou\u017e\u00edv\u00e1 se p\u0159i v\u00fdvoji materi\u00e1l\u016f a kontrole kvality.<\/p>\n

    Testy tepeln\u00e9ho cyklov\u00e1n\u00ed v re\u00e1ln\u00fdch podm\u00ednk\u00e1ch<\/h3>\n

    P\u0159i tepeln\u00e9m cyklov\u00e1n\u00ed jsou cel\u00e9 profily vystaveny opakovan\u00e9mu zah\u0159\u00edv\u00e1n\u00ed a ochlazov\u00e1n\u00ed. T\u00edm se simuluj\u00ed denn\u00ed a no\u010dn\u00ed cykly.<\/p>\n

    In\u017een\u00fd\u0159i pozoruj\u00ed:<\/p>\n

      \n
    • Trval\u00e1 deformace<\/li>\n
    • Uvoln\u011bn\u00ed kloub\u016f<\/li>\n
    • Povrchov\u00e9 praskliny<\/li>\n
    • Hluk z pohybu<\/li>\n<\/ul>\n

      Tato zkou\u0161ka je u\u017eite\u010dn\u00e1 pro z\u00e1v\u011bsy a venkovn\u00ed r\u00e1my.<\/p>\n

      Kontroly \u00farovn\u011b v\u00fdroby<\/h3>\n

      V extruzn\u00edch z\u00e1vodech jsou \u010dast\u011bj\u0161\u00ed nep\u0159\u00edm\u00e9 kontroly. Pat\u0159\u00ed mezi n\u011b:<\/p>\n

        \n
      • Rozm\u011brov\u00e9 kontroly p\u0159i r\u016fzn\u00fdch teplot\u00e1ch<\/li>\n
      • Kontroly rovnosti po ochlazen\u00ed<\/li>\n
      • Mont\u00e1\u017en\u00ed zkou\u0161ky v hork\u00fdch podm\u00ednk\u00e1ch<\/li>\n<\/ul>\n

        Tyto kroky zajist\u00ed, \u017ee se profily budou p\u0159i odesl\u00e1n\u00ed chovat podle o\u010dek\u00e1v\u00e1n\u00ed.<\/p>\n

        Kdy by si kupuj\u00edc\u00ed m\u011bli vy\u017e\u00e1dat \u00fadaje z test\u016f<\/h3>\n

        Ne ka\u017ed\u00fd projekt vy\u017eaduje laboratorn\u00ed zpr\u00e1vy. Vysoce rizikov\u00e9 p\u0159\u00edpady ano. Mezi n\u011b pat\u0159\u00ed:<\/p>\n

          \n
        • Velmi dlouh\u00e9 profily<\/li>\n
        • Sestavy s t\u011bsnou toleranc\u00ed<\/li>\n
        • Extr\u00e9mn\u00ed klimatick\u00e9 oblasti<\/li>\n<\/ul>\n

          Jasnou komunikac\u00ed p\u0159edejdete pozd\u011bj\u0161\u00edm spor\u016fm.<\/p>\n

          <\/svg> Laboratorn\u00edmi zkou\u0161kami lze p\u0159esn\u011b zm\u011b\u0159it koeficient tepeln\u00e9 rozta\u017enosti hlin\u00edkov\u00fdch v\u00fdlisk\u016f.<\/b>Pravda<\/span><\/p>

          Dilatometrick\u00e9 zkou\u0161ky a zkou\u0161ky \u0159\u00edzen\u00fdm zah\u0159\u00edv\u00e1n\u00edm poskytuj\u00ed p\u0159esn\u00e9 \u00fadaje o rozta\u017enosti.<\/p><\/div>
          \n

          <\/svg> Po v\u00fdb\u011bru t\u0159\u00eddy slitiny nen\u00ed nutn\u00e9 prov\u00e1d\u011bt zkou\u0161ky tepeln\u00e9 rozta\u017enosti.<\/b>False<\/span><\/p>

          Dokonce i u zn\u00e1m\u00fdch slitin pom\u00e1h\u00e1 testov\u00e1n\u00ed potvrdit chov\u00e1n\u00ed v konkr\u00e9tn\u00edch konstrukc\u00edch profil\u016f a aplikac\u00edch.<\/p><\/div><\/p>\n

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

          Tepeln\u00e1 rozta\u017enost je p\u0159edv\u00eddateln\u00e9 chov\u00e1n\u00ed, nikoliv vada. Hlin\u00edkov\u00e9 v\u00fdlisky funguj\u00ed dob\u0159e, pokud je pohyb pl\u00e1novan\u00fd a \u0159\u00edzen\u00fd. Jasn\u00fd n\u00e1vrh, spr\u00e1vn\u00e1 volba slitiny a \u0159\u00e1dn\u00e9 testov\u00e1n\u00ed zabr\u00e1n\u00ed v\u011bt\u0161in\u011b poruch souvisej\u00edc\u00edch s rozta\u017enost\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"

          Anodized and Powder Coated T-Slotted Aluminum Extrusion Thermal expansion often hides until it causes cracks, noise, or misalignment. Many buyers only notice it after installation. This topic deserves clear answers before problems appear. The thermal expansion rate of aluminum extrusions explains how much the profile length changes when temperature changes. Understanding this rate helps prevent […]<\/p>\n","protected":false},"author":6,"featured_media":7327,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_analysis_target_kw":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-28752","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-custom-mold"],"meta_box":{"post-to-quiz_to":[]},"_links":{"self":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/posts\/28752","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/comments?post=28752"}],"version-history":[{"count":0,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/posts\/28752\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/media\/7327"}],"wp:attachment":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/media?parent=28752"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/categories?post=28752"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/tags?post=28752"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}