{"id":26138,"date":"2025-11-18T11:56:39","date_gmt":"2025-11-18T03:56:39","guid":{"rendered":"https:\/\/sinoextrud.com\/?p=26138"},"modified":"2025-11-18T11:56:39","modified_gmt":"2025-11-18T03:56:39","slug":"moznosti-povrchove-upravy-a-eloxovani-chladice","status":"publish","type":"post","link":"https:\/\/sinoextrud.com\/cs\/heat-sink-surface-finishing-and-anodizing-choices\/","title":{"rendered":"Mo\u017enosti povrchov\u00e9 \u00fapravy a eloxov\u00e1n\u00ed chladi\u010de?"},"content":{"rendered":"

\"zelen\u00fd
Velk\u00fd zelen\u00fd keramick\u00fd kv\u011btin\u00e1\u010d s \u017eivou rostlinou na d\u0159ev\u011bn\u00e9m stole<\/figcaption><\/figure>\n<\/p>\n

P\u0159em\u00fd\u0161leli jste n\u011bkdy nad t\u00edm, pro\u010d n\u011bkter\u00e9 chladi\u010de vydr\u017e\u00ed d\u00e9le nebo vypadaj\u00ed l\u00e9pe ne\u017e jin\u00e9? Ned\u00e1vno jsem se s t\u00edm setkal p\u0159i hled\u00e1n\u00ed dodavatele povrchov\u00e9 \u00fapravy extrudovan\u00fdch hlin\u00edkov\u00fdch d\u00edl\u016f.<\/p>\n

Spr\u00e1vn\u00e1 povrchov\u00e1 \u00faprava \u2013 zejm\u00e9na eloxov\u00e1n\u00ed \u2013 m\u016f\u017ee zlep\u0161it odolnost proti korozi, emisivitu povrchu a trvanlivost hlin\u00edkov\u00fdch chladi\u010d\u016f, z\u00e1rove\u0148 jim dod\u00e1 atraktivn\u00ed vzhled a bude ladit s va\u0161\u00ed zna\u010dkou.<\/strong><\/p>\n

V dal\u0161\u00ed \u010d\u00e1sti tohoto p\u0159\u00edsp\u011bvku v\u00e1s provedu krok za krokem kl\u00ed\u010dov\u00fdmi ot\u00e1zkami: jak\u00e9 typy eloxov\u00e1n\u00ed jsou vhodn\u00e9 pro chladi\u010de, jak povrchov\u00e1 \u00faprava ovliv\u0148uje tepeln\u00fd v\u00fdkon, jak\u00e9 barevn\u00e9 mo\u017enosti m\u00e1te k dispozici a zda jsou tvrd\u00e9 povrchov\u00e9 \u00fapravy skute\u010dn\u011b nezbytn\u00e9. Poj\u010fme se do toho pustit.<\/p>\n

Kter\u00e9 typy eloxov\u00e1n\u00ed jsou nejvhodn\u011bj\u0161\u00ed pro chladi\u010de?<\/h2>\n

P\u0159edstavte si n\u00e1sleduj\u00edc\u00ed situaci: vyberete standardn\u00ed povrchovou \u00fapravu, abyste u\u0161et\u0159ili n\u00e1klady, a pozd\u011bji v\u00e1m v n\u00e1ro\u010dn\u00e9m prost\u0159ed\u00ed sel\u017ee chladi\u010d. Tomu se dalo p\u0159edej\u00edt.<\/p>\n

U hlin\u00edkov\u00fdch chladi\u010d\u016f jsou hlavn\u00edmi typy eloxov\u00e1n\u00ed typ II (standardn\u00ed kyselina s\u00edrov\u00e1) a typ III (tvrd\u00fd povlak) \u2013 a volba z\u00e1vis\u00ed na prost\u0159ed\u00ed, po\u017eadavc\u00edch na trvanlivost a n\u00e1kladech.<\/strong><\/p>\n

\"modern\u00ed
Elegantn\u00ed \u010dern\u00e1 ko\u017een\u00e1 kancel\u00e1\u0159sk\u00e1 \u017eidle s ergonomick\u00fdm designem a nastaviteln\u00fdmi funkcemi pro v\u011bt\u0161\u00ed pohodl\u00ed<\/figcaption><\/figure>\n<\/p>\n

Kdy\u017e jsem za\u010dal pracovat s hlin\u00edkov\u00fdmi profily, zjistil jsem, \u017ee eloxov\u00e1n\u00ed nen\u00ed univerz\u00e1ln\u00ed. Podle zdroj\u016f pat\u0159\u00ed mezi b\u011b\u017en\u00e9 typy eloxov\u00e1n\u00ed podle americk\u00e9 vojensk\u00e9 specifikace MIL-A-8625:<\/p>\n

    \n
  • Typ I (kyselina chromov\u00e1) \u2014 tenk\u00e1 vrstva, v\u011bt\u0161inou dekorativn\u00ed nebo pro pou\u017eit\u00ed v leteck\u00e9m pr\u016fmyslu podle vojensk\u00fdch specifikac\u00ed.<\/li>\n
  • Typ II (standardn\u00ed kyselina s\u00edrov\u00e1) \u2014 st\u0159edn\u00ed tlou\u0161\u0165ka, vhodn\u00fd pro obecn\u00e9 ochrann\u00e9 pou\u017eit\u00ed.<\/li>\n
  • Typ III (zn\u00e1m\u00fd tak\u00e9 jako tvrd\u00fd povlak) \u2014 siln\u00e1, hust\u00e1 vrstva s vysokou odolnost\u00ed pro n\u00e1ro\u010dn\u00e9 podm\u00ednky.<\/li>\n<\/ul>\n

    U chladi\u010d\u016f vyroben\u00fdch z hlin\u00edkov\u00fdch v\u00fdlisk\u016f (co\u017e je n\u00e1\u0161 p\u0159\u00edpad v Sinoextrud) se volba \u010dasto omezuje na typ II versus typ III. Takto je hodnot\u00edm:<\/p>\n

    Srovn\u00e1n\u00ed: Typ II vs. Typ III<\/h3>\n\n\n\n\n\n\n
    Typ<\/th>\nTlou\u0161\u0165ka oxidov\u00e9 vrstvy<\/th>\nHlavn\u00ed v\u00fdhody<\/th>\nTypick\u00fd p\u0159\u00edpad pou\u017eit\u00ed chladi\u010d\u016f<\/th>\n<\/tr>\n<\/thead>\n
    Typ II<\/td>\n~5\u201325 \u00b5m<\/td>\nDobr\u00e1 odolnost proti korozi\/opot\u0159eben\u00ed, barviteln\u00e9, n\u00e1kladov\u011b efektivn\u00ed<\/td>\nElektronika pro vnit\u0159n\u00ed pou\u017eit\u00ed, m\u00edrn\u00e9 prost\u0159ed\u00ed<\/td>\n<\/tr>\n
    Typ III (tvrd\u00fd povlak)<\/td>\n~13\u2013150 \u00b5m<\/td>\nVynikaj\u00edc\u00ed odolnost proti opot\u0159eben\u00ed\/korozi, siln\u011bj\u0161\u00ed dielektrikum, odoln\u011bj\u0161\u00ed povrch<\/td>\nVenkovn\u00ed, odoln\u00e9, vysoce vibra\u010dn\u00ed, pr\u016fmyslov\u00e9 osv\u011btlen\u00ed, sol\u00e1rn\u00ed r\u00e1my<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    M\u016fj n\u00e1zor v praxi<\/h3>\n
      \n
    • Pokud se chladi\u010d pou\u017e\u00edv\u00e1 v b\u011b\u017en\u00e9m vnit\u0159n\u00edm elektronick\u00e9m krytu, vol\u00edm typ II. Rozd\u00edl v cen\u011b a dob\u011b zpracov\u00e1n\u00ed je p\u0159im\u011b\u0159en\u00fd. <\/li>\n
    • Pokud bude chladi\u010d um\u00edst\u011bn venku (nap\u0159. jako sou\u010d\u00e1st sol\u00e1rn\u00edho hlin\u00edkov\u00e9ho r\u00e1mu nebo venkovn\u00edho osv\u011btlen\u00ed) nebo bude vystaven ot\u011bru, doporu\u010duji typ III. <\/li>\n
    • Pozn\u00e1mka: N\u011bkte\u0159\u00ed konstrukt\u00e9\u0159i se ob\u00e1vaj\u00ed, \u017ee p\u0159id\u00e1n\u00ed eloxov\u00e1n\u00ed zvy\u0161uje tepeln\u00fd odpor. Ale i kdy\u017e je oxidov\u00e1 vrstva m\u00e9n\u011b vodiv\u00e1 ne\u017e hlin\u00edk, zlep\u0161en\u00ed emisivity a ochrany \u017eivotn\u00edho prost\u0159ed\u00ed to v mnoha p\u0159\u00edpadech m\u016f\u017ee vyv\u00e1\u017eit. <\/li>\n
    • Je\u0161t\u011b jedna pozn\u00e1mka: Z\u00e1le\u017e\u00ed na z\u00e1kladn\u00edm slo\u017een\u00ed slitiny. Nap\u0159\u00edklad hlin\u00edk 6063 nebo 6061 je b\u011b\u017en\u00fd a ka\u017ed\u00fd z nich se m\u016f\u017ee p\u0159i eloxov\u00e1n\u00ed chovat trochu jinak. V Sinoextrud pou\u017e\u00edv\u00e1me 6063-T5 nebo 6061-T6, tak\u017ee zaji\u0161\u0165ujeme, aby n\u00e1\u0161 eloxova\u010d odpov\u00eddal t\u011bmto slitin\u00e1m.<\/li>\n<\/ul>\n

      <\/svg> Eloxov\u00e1n\u00ed typu III poskytuje v\u00fdrazn\u011b vy\u0161\u0161\u00ed odolnost proti opot\u0159eben\u00ed ne\u017e typ II pro chladi\u010de.<\/b>Pravda<\/span><\/p>

      Typ III (tvrd\u00fd povlak) m\u00e1 siln\u011bj\u0161\u00ed a hust\u0161\u00ed vrstvu oxidu, vy\u0161\u0161\u00ed tvrdost a lep\u0161\u00ed odolnost proti opot\u0159eben\u00ed a korozi.<\/p><\/div>
      \n

      <\/svg> Anodizace typu II nelze barvit ani obarvit, pouze typ III.<\/b>False<\/span><\/p>

      P\u0159i eloxov\u00e1n\u00ed typu II se st\u00e1le vytv\u00e1\u0159\u00ed por\u00e9zn\u00ed vrstva oxidu, na kterou lze nan\u00e1\u0161et barviva; barven\u00ed nen\u00ed v\u00fdhradn\u011b dom\u00e9nou typu III.<\/p><\/div><\/p>\n

      Jak\u00fd vliv m\u00e1 povrchov\u00e1 \u00faprava na tepeln\u00e9 vlastnosti?<\/h2>\n

      Mo\u017en\u00e1 si mysl\u00edte, \u017ee povrchov\u00e1 \u00faprava je \u010dist\u011b kosmetick\u00e1 z\u00e1le\u017eitost, ale volba povrchov\u00e9 \u00fapravy m\u016f\u017ee ovlivnit, jak dob\u0159e chladi\u010d skute\u010dn\u011b chlad\u00ed.<\/p>\n

      Povrchov\u00e1 \u00faprava, jako je eloxov\u00e1n\u00ed, ovliv\u0148uje emisivitu povrchu (p\u0159enos tepla s\u00e1l\u00e1n\u00edm), tak\u017ee spr\u00e1vn\u00e1 povrchov\u00e1 \u00faprava pom\u00e1h\u00e1 chladi\u010d\u016fm fungovat l\u00e9pe \u2013 nejen vypadat l\u00e9pe.<\/strong><\/p>\n

      \"hn\u011bd\u00e1
      Stylov\u00e1 hn\u011bd\u00e1 ko\u017een\u00e1 ta\u0161ka p\u0159es rameno s klopou, ide\u00e1ln\u00ed pro neform\u00e1ln\u00ed a elegantn\u00ed v\u00fdlety<\/figcaption><\/figure>\n<\/p>\n

      P\u0159i pr\u00e1ci s extrudovan\u00fdmi profily a chladi\u010di v\u017edy kladu d\u016fraz na tepeln\u00fd v\u00fdkon. Kl\u00ed\u010dov\u00fdm aspektem je rovnov\u00e1ha mezi veden\u00edm tepla (z komponenty do chladi\u010de) a konvekc\u00ed\/z\u00e1\u0159en\u00edm (z chladi\u010de do okol\u00ed). Velk\u00e1 pozornost se v\u011bnuje \u201cdesignu \u017eeber\u201d, ale d\u016fle\u017eit\u00e1 je tak\u00e9 povrchov\u00e1 \u00faprava.<\/p>\n

      Vliv povrchov\u00e9 \u00fapravy na p\u0159enos tepla<\/h3>\n
        \n
      • U hol\u00e9ho hlin\u00edkov\u00e9ho povrchu je emisivita n\u00edzk\u00e1: kolem 0,04\u20130,06.<\/li>\n
      • Po eloxov\u00e1n\u00ed se emisivita v\u00fdrazn\u011b zv\u00fd\u0161\u00ed \u2013 na p\u0159ibli\u017en\u011b 0,83\u20130,86.<\/li>\n
      • V praxi to znamen\u00e1: U chladi\u010d\u016f pracuj\u00edc\u00edch s p\u0159irozenou konvekc\u00ed nebo u kter\u00fdch je z\u00e1\u0159en\u00ed v\u00fdznamnou slo\u017ekou p\u0159enosu tepla m\u016f\u017ee povrchov\u00e1 \u00faprava sn\u00ed\u017eit tepeln\u00fd odpor. Nap\u0159\u00edklad v n\u011bkter\u00fdch situac\u00edch se u \u010dern\u011b eloxovan\u00fdch povrch\u016f uv\u00e1d\u00ed zlep\u0161en\u00ed o 20\u201335%.<\/li>\n<\/ul>\n

        Ale: existuje kompromis<\/h3>\n
          \n
        • Oxidov\u00e1 vrstva vytvo\u0159en\u00e1 anodizac\u00ed je nekovov\u00e1 a m\u00e1 ni\u017e\u0161\u00ed tepelnou vodivost ne\u017e hlin\u00edk. M\u016f\u017ee doj\u00edt k m\u00edrn\u00e9 ztr\u00e1t\u011b vodivosti. Ve v\u011bt\u0161in\u011b konstrukc\u00ed v\u0161ak st\u00e1le p\u0159evl\u00e1d\u00e1 vodivost \u017eeber, tak\u017ee zisk z radiace p\u0159ev\u00e1\u017e\u00ed ztr\u00e1tu z vodivosti.<\/li>\n
        • Pokud pou\u017eijete siln\u00e9 nekovov\u00e9 povlaky (nap\u0159\u00edklad pr\u00e1\u0161kov\u00e9 lakov\u00e1n\u00ed nebo n\u00e1t\u011br), mohou p\u016fsobit jako tepeln\u00e9 izol\u00e1tory a sn\u00ed\u017eit v\u00fdkon. Jeden zdroj varuje p\u0159ed lakov\u00e1n\u00edm nebo pr\u00e1\u0161kov\u00fdm lakov\u00e1n\u00edm chladi\u010d\u016f, pokud je d\u016fle\u017eit\u00fd tepeln\u00fd v\u00fdkon.<\/li>\n<\/ul>\n

          Moje pokyny<\/h3>\n
            \n
          • U vysoce v\u00fdkonn\u00fdch LED modul\u016f, nap\u00e1jec\u00edch zdroj\u016f nebo sou\u010d\u00e1st\u00ed, u nich\u017e jsou \u017eebra odkryta a z\u00e1\u0159en\u00ed hraje d\u016fle\u017eitou roli, zvolte eloxovan\u00fd povrch (zejm\u00e9na \u010dern\u00fd nebo tmav\u00fd), aby se maximalizovala emisivita. <\/li>\n
          • Pokud pl\u00e1nujete nat\u0159\u00edt nebo pr\u00e1\u0161kov\u011b lakovat pro zna\u010den\u00ed nebo venkovn\u00ed barvu, zkontrolujte tepeln\u00fd rozpo\u010det. Pro estetick\u00e9 \u00fa\u010dely m\u016f\u017eete akceptovat m\u00edrn\u011b vy\u0161\u0161\u00ed teplotu spoje. <\/li>\n
          • Pokud prost\u0159ed\u00ed nen\u00ed drsn\u00e9 a kl\u00ed\u010dov\u00fdm faktorem jsou n\u00e1klady, zvolte i tak eloxov\u00e1n\u00ed (i standardn\u00ed), proto\u017ee poskytuje ochranu a nav\u00edc m\u00e1 v\u00fdhodu v oblasti emisivity. <\/li>\n
          • U v\u00fdlisk\u016f s velmi kr\u00e1tkou tepelnou cestou (tj. siln\u00e1 z\u00e1kladna, vysok\u00e1 \u017eebra, nucen\u00e9 chlazen\u00ed vzduchem) je povrchov\u00e1 \u00faprava st\u00e1le d\u016fle\u017eit\u00e1, ale jej\u00ed relativn\u00ed p\u0159\u00ednos je men\u0161\u00ed. <\/li>\n<\/ul>\n

            <\/svg> Eloxov\u00e1n\u00ed v\u017edy sni\u017euje tepeln\u00fd v\u00fdkon chladi\u010de, proto\u017ee vytv\u00e1\u0159\u00ed izola\u010dn\u00ed vrstvu oxidu.<\/b>False<\/span><\/p>

            A\u010dkoli m\u00e1 anodick\u00e1 oxidov\u00e1 vrstva ni\u017e\u0161\u00ed vodivost ne\u017e hlin\u00edk, zv\u00fd\u0161en\u00ed povrchov\u00e9 emisivity a ochrany \u010dasto vede k celkov\u00e9mu zlep\u0161en\u00ed nebo srovnateln\u00e9mu tepeln\u00e9mu v\u00fdkonu, zejm\u00e9na v re\u017eimech konvekce\/radiace.<\/p><\/div>
            \n

            <\/svg> Povrchov\u00e1 \u00faprava, jako je eloxov\u00e1n\u00ed, m\u016f\u017ee zv\u00fd\u0161it emisivitu povrchu hlin\u00edkov\u00fdch chladi\u010d\u016f z ~0,05 na ~0,85.<\/b>Pravda<\/span><\/p>

            Zdroje uv\u00e1d\u011bj\u00ed emisivitu hol\u00e9ho hlin\u00edku na \u00farovni ~0,04\u20130,06 a po eloxov\u00e1n\u00ed se tato hodnota zlep\u0161uje na ~0,83\u20130,86.<\/p><\/div><\/p>\n

            Jak\u00e9 barvy jsou k dispozici pro eloxov\u00e1n\u00ed?<\/h2>\n

            Mo\u017en\u00e1 si mysl\u00edte, \u017ee eloxov\u00e1n\u00ed je pouze st\u0159\u00edbrn\u00e9 nebo \u010dern\u00e9, ale ve skute\u010dnosti existuje cel\u00e1 \u0159ada barev, co\u017e otev\u00edr\u00e1 mo\u017enosti pro branding a p\u0159izp\u016fsoben\u00ed.<\/p>\n

            Eloxov\u00e1n\u00ed umo\u017e\u0148uje barven\u00ed pomoc\u00ed barviv (jakmile se vytvo\u0159\u00ed vrstva oxidu) nebo p\u0159ed\u00faprav, kter\u00e9 nab\u00edzej\u00ed barvy jako \u010dern\u00e1, modr\u00e1, zelen\u00e1, zlat\u00e1 a dal\u0161\u00ed \u2013 a\u010dkoli barva sama o sob\u011b nem\u00e1 v\u00fdznamn\u00fd vliv na tepeln\u00fd p\u0159enos.<\/strong><\/p>\n

            \"modern\u00ed
            Modern\u00ed b\u00e9\u017eov\u00e9 semi\u0161ov\u00e9 k\u0159eslo s d\u0159ev\u011bn\u00fdmi nohami ve stylov\u00e9m proveden\u00ed<\/figcaption><\/figure>\n<\/p>\n

            P\u0159i rozhovorech s v\u00fdrobci hlin\u00edkov\u00fdch povrchov\u00fdch \u00faprav jsem zjistil, \u017ee barva je \u010dasto sp\u00ed\u0161e \u201cp\u0159\u00edjemn\u00fdm dopl\u0148kem\u201d ne\u017e faktorem ovliv\u0148uj\u00edc\u00edm v\u00fdkonnost. Pod\u00edvejme se na to bl\u00ed\u017ee.<\/p>\n

            Jak funguje barven\u00ed<\/h3>\n
              \n
            • Po eloxov\u00e1n\u00ed hlin\u00edku z\u016fst\u00e1v\u00e1 por\u00e9zn\u00ed oxidov\u00e1 vrstva. Tyto p\u00f3ry mohou p\u0159ij\u00edmat organick\u00e1 nebo anorganick\u00e1 barviva.<\/li>\n
            • Po barven\u00ed se d\u00edl ut\u011bsn\u00ed (nap\u0159\u00edklad pono\u0159en\u00edm do vrouc\u00ed deionizovan\u00e9 vody), aby se barvivo zafixovalo a uzav\u0159ely se p\u00f3ry.<\/li>\n
            • \u0160k\u00e1la barev je \u0161irok\u00e1: b\u011b\u017en\u00e1 je \u010dern\u00e1, ale tak\u00e9 modr\u00e1, zelen\u00e1, \u010derven\u00e1, zlat\u00e1, bronzov\u00e1 atd.<\/li>\n
            • N\u011bkter\u00e9 slitiny nebo procesy s tlustou tvrdou vrstvou mohou omezovat v\u00fdb\u011br barev (tvrd\u00e9 vrstvy \u010dasto z\u016fst\u00e1vaj\u00ed \u0161ed\u00e9 a\u017e \u010dern\u00e9).<\/li>\n<\/ul>\n

              Barevn\u00e9 a tepeln\u00e9 vlastnosti<\/h3>\n
                \n
              • Barva nebo barvivo, kter\u00e9 se pou\u017eije, nem\u011bn\u00ed v\u00fdrazn\u011b emisivitu povrchu chladi\u010de. Nap\u0159\u00edklad \u010dir\u00fd (p\u0159\u00edrodn\u00ed) eloxovan\u00fd povrch a \u010dern\u00fd povrch maj\u00ed podobn\u00e9 emisn\u00ed vlastnosti.<\/li>\n
              • V\u00fdb\u011br barvy je proto ur\u010den p\u0159edev\u0161\u00edm pro estetick\u00e9 \u00fa\u010dely, branding, identifikaci koroze nebo odli\u0161en\u00ed OEM.<\/li>\n
              • Nicm\u00e9n\u011b tmav\u0161\u00ed povrchov\u00e9 \u00fapravy se n\u011bkdy vol\u00ed proto, \u017ee \u010dern\u00e1 barva m\u00e1 obecn\u011b m\u00edrn\u011b vy\u0161\u0161\u00ed emisivitu, ale u eloxovan\u00fdch povrch\u016f je tento rozd\u00edl mal\u00fd.<\/li>\n<\/ul>\n

                Praktick\u00e9 n\u00e1vrhy<\/h3>\n
                  \n
                • Pokud je v\u00e1\u0161 produkt viditeln\u00fd a chcete sladit barvy zna\u010dky, zvolte barven\u00e9 eloxov\u00e1n\u00ed. <\/li>\n
                • Pokud chcete nejni\u017e\u0161\u00ed cenu a nez\u00e1le\u017e\u00ed v\u00e1m na barv\u011b: \u010dir\u00fd eloxovan\u00fd nebo p\u0159\u00edrodn\u00ed povrch je v po\u0159\u00e1dku. <\/li>\n
                • Pro venkovn\u00ed osv\u011btlen\u00ed nebo architektonick\u00e9 hlin\u00edkov\u00e9 prvky, u nich\u017e z\u00e1le\u017e\u00ed na vzhledu: zvolte eloxov\u00e1n\u00ed + barven\u00ed + ut\u011bsn\u011bn\u00ed + zva\u017ete kompatibilitu slitiny s barvivem. <\/li>\n
                • Pro dod\u00e1vky extrudovan\u00fdch profil\u016f (jak je tomu v na\u0161em p\u0159\u00edpad\u011b): standardn\u011b nab\u00edz\u00edme p\u0159\u00edrodn\u00ed eloxov\u00e1n\u00ed a \u010dernou barvu, barven\u00e9 barvy jsou k dispozici jako voliteln\u00e1 mo\u017enost (s mo\u017en\u00fdm minim\u00e1ln\u00edm objednan\u00fdm mno\u017estv\u00edm a p\u0159\u00edplatkem). <\/li>\n<\/ul>\n

                  <\/svg> Barva eloxovan\u00e9 vrstvy v\u00fdznamn\u011b ovliv\u0148uje radia\u010dn\u00ed p\u0159enos tepla chladi\u010de.<\/b>False<\/span><\/p>

                  Studie ukazuj\u00ed, \u017ee \u010dir\u00e9 a \u010dern\u011b eloxovan\u00e9 povrchy maj\u00ed t\u00e9m\u011b\u0159 stejnou emisivitu; barva nem\u00e1 v\u00fdznamn\u00fd vliv na p\u0159enos tepla s\u00e1l\u00e1n\u00edm.<\/p><\/div>
                  \n

                  <\/svg> Eloxov\u00e1n\u00ed umo\u017e\u0148uje barven\u00ed hlin\u00edkov\u00fdch chladi\u010d\u016f do barev jako modr\u00e1, zelen\u00e1 a \u010derven\u00e1, stejn\u011b jako \u010dern\u00e1.<\/b>Pravda<\/span><\/p>

                  Por\u00e9zn\u00ed oxidov\u00e1 vrstva vytvo\u0159en\u00e1 b\u011bhem eloxov\u00e1n\u00ed m\u016f\u017ee p\u0159ed ut\u011bsn\u011bn\u00edm p\u0159ij\u00edmat barviva v \u0161irok\u00e9 \u0161k\u00e1le barev.<\/p><\/div><\/p>\n

                  Jsou tvrd\u00e9 povrchov\u00e9 \u00fapravy nezbytn\u00e9 pro zaji\u0161t\u011bn\u00ed trvanlivosti?<\/h2>\n

                  Pokud jsou va\u0161e chladi\u010de vystaveny drsn\u00fdm podm\u00ednk\u00e1m, m\u016f\u017eete se pt\u00e1t: m\u00e1m pot\u0159eba<\/em> Posta\u010d\u00ed povrchov\u00e1 \u00faprava tvrd\u00fdm povlakem (typ III) nebo standardn\u00ed eloxov\u00e1n\u00ed?<\/p>\n

                  Tvrd\u00e9 eloxov\u00e1n\u00ed (typ III) nab\u00edz\u00ed v\u00fdrazn\u011b vy\u0161\u0161\u00ed odolnost proti opot\u0159eben\u00ed a korozi ne\u017e standardn\u00ed eloxov\u00e1n\u00ed, ale zda je \u2018nezbytn\u00e9\u2019, z\u00e1vis\u00ed na va\u0161em aplika\u010dn\u00edm prost\u0159ed\u00ed, n\u00e1kladech a konstruk\u010dn\u00edch omezen\u00edch.<\/strong><\/p>\n

                  \"hn\u011bd\u00fd
                  Stylov\u00fd hn\u011bd\u00fd ko\u017een\u00fd batoh s p\u0159edn\u00edm zipem a nastaviteln\u00fdmi ramenn\u00edmi popruhy<\/figcaption><\/figure>\n<\/p>\n

                  P\u0159i pr\u00e1ci s r\u00e1my venkovn\u00edch sv\u00edtidel, pr\u016fmyslov\u00fdmi profily a l\u00e9ka\u0159sk\u00fdm\/pr\u016fmyslov\u00fdm za\u0159\u00edzen\u00edm jsem se nau\u010dil, \u017ee rozhodnut\u00ed zvolit povrchovou \u00fapravu s tvrd\u00fdm povlakem nen\u00ed automatick\u00e9, ale m\u011blo by vych\u00e1zet z pot\u0159eb dan\u00e9 aplikace.<\/p>\n

                  Co v\u00e1m poskytuje tvrd\u00fd povlak (typ III)<\/h3>\n
                    \n
                  • Mnohem siln\u011bj\u0161\u00ed vrstva oxidu, \u010dasto 13\u2013150 \u00b5m nebo v\u00edce.<\/li>\n
                  • Zv\u00fd\u0161en\u00e1 tvrdost (n\u011bkter\u00e9 zdroje uv\u00e1d\u011bj\u00ed tvrdost podle Vickers HV 400\u2013600 nebo ekvivalent).<\/li>\n
                  • Lep\u0161\u00ed odolnost proti opot\u0159eben\u00ed (ot\u011br, kluzn\u00fd kontakt) a lep\u0161\u00ed odolnost proti korozi (soln\u00e1 mlha, chemick\u00e9 p\u016fsoben\u00ed) ne\u017e standardn\u00ed eloxov\u00e1n\u00ed.<\/li>\n
                  • Vhodn\u00e9 pro podm\u00ednky s vysok\u00fdm nam\u00e1h\u00e1n\u00edm nebo venkovn\u00ed podm\u00ednky: nap\u0159. t\u011b\u017ek\u00e1 osv\u011btlovac\u00ed technika, automobilov\u00fd pr\u016fmysl, pr\u016fmysl.<\/li>\n<\/ul>\n

                    Kdy je standardn\u00ed eloxov\u00e1n\u00ed dosta\u010duj\u00edc\u00ed<\/h3>\n
                      \n
                    • Elektronika pro vnit\u0159n\u00ed pou\u017eit\u00ed, kde jsou podm\u00ednky kontrolov\u00e1ny <\/li>\n
                    • N\u00edzkon\u00e1kladov\u00e9 projekty, kde je prost\u0159ed\u00ed p\u0159\u00edzniv\u00e9 <\/li>\n
                    • Konstrukce, u nich\u017e je m\u00e9n\u011b pravd\u011bpodobn\u00e9, \u017ee povrchov\u00e1 \u00faprava bude vystavena od\u011bru, n\u00e1raz\u016fm nebo chemick\u00fdm l\u00e1tk\u00e1m. <\/li>\n
                    • Kdy\u017e je dominantn\u00ed tepeln\u00e1 vodivost a povrchov\u00e1 \u00faprava je sekund\u00e1rn\u00ed <\/li>\n<\/ul>\n

                      Kompromisy a praktick\u00e9 aspekty<\/h3>\n
                        \n
                      • Tvrd\u00e9 eloxov\u00e1n\u00ed je dra\u017e\u0161\u00ed, trv\u00e1 d\u00e9le a m\u016f\u017ee vy\u017eadovat p\u0159\u00edsn\u011bj\u0161\u00ed kontrolu kvality. <\/li>\n
                      • Povrch m\u016f\u017ee b\u00fdt drsn\u011bj\u0161\u00ed nebo m\u016f\u017ee vy\u017eadovat n\u00e1sledn\u00e9 obr\u00e1b\u011bn\u00ed\/dokon\u010dov\u00e1n\u00ed, pokud jsou vy\u017eadov\u00e1ny p\u0159\u00edsn\u00e9 tolerance. <\/li>\n<\/ul>\n

                        Moje doporu\u010den\u00ed<\/h3>\n

                        Ve spole\u010dnosti Sinoextrud se p\u0159i hodnocen\u00ed zak\u00e1zkov\u00e9 extruze pro klienta pt\u00e1m:<\/p>\n

                          \n
                        • Jak\u00e9 je prost\u0159ed\u00ed? Pokud se jedn\u00e1 o venkovn\u00ed prost\u0159ed\u00ed nebo prost\u0159ed\u00ed s korozivn\u00edmi vlivy \u2192 zva\u017ete pou\u017eit\u00ed tvrd\u00e9ho povlaku. <\/li>\n
                        • Dojde k mechanick\u00e9mu kontaktu? Pokud ano \u2192 pou\u017eijte tvrd\u00fd povlak. <\/li>\n
                        • M\u00e1te omezen\u00fd rozpo\u010det? \u2192 Standardn\u00ed eloxov\u00e1n\u00ed m\u016f\u017ee sta\u010dit. <\/li>\n
                        • Chcete \u017eiv\u00e9 barvy? \u2192 tvrd\u00fd povlak to omezuje. <\/li>\n
                        • Jsou vy\u017eadov\u00e1ny p\u0159\u00edsn\u00e9 tolerance? \u2192 Tvrd\u00fd povlak m\u016f\u017ee vy\u017eadovat dodate\u010dn\u00e9 obr\u00e1b\u011bn\u00ed. <\/li>\n<\/ul>\n

                          <\/svg> Pro v\u0161echny hlin\u00edkov\u00e9 chladi\u010de pou\u017e\u00edvan\u00e9 venku je v\u017edy nutn\u00e9 tvrd\u00e9 eloxov\u00e1n\u00ed.<\/b>False<\/span><\/p>

                          A\u010dkoli tvrd\u00fd povlak nab\u00edz\u00ed vy\u0161\u0161\u00ed odolnost, v mnoha venkovn\u00edch aplikac\u00edch lze pou\u017e\u00edt standardn\u00ed eloxov\u00e1n\u00ed, pokud prost\u0159ed\u00ed nen\u00ed extr\u00e9mn\u00ed; v\u00fdb\u011br by m\u011bl b\u00fdt zalo\u017een na skute\u010dn\u00fdch podm\u00ednk\u00e1ch a pom\u011bru n\u00e1klad\u016f a p\u0159\u00ednos\u016f.<\/p><\/div>
                          \n

                          <\/svg> Tvrd\u00e9 eloxov\u00e1n\u00ed v\u00fdrazn\u011b zvy\u0161uje odolnost proti opot\u0159eben\u00ed a korozi, d\u00edky \u010demu\u017e je vhodn\u00e9 pro n\u00e1ro\u010dn\u00e9 aplikace v oblasti chlazen\u00ed.<\/b>Pravda<\/span><\/p>

                          Zdroje ukazuj\u00ed, \u017ee tvrd\u00fd povlak (typ III) m\u00e1 siln\u011bj\u0161\u00ed a tvrd\u0161\u00ed vrstvu oxidu a lep\u0161\u00ed odolnost proti opot\u0159eben\u00ed a korozi ve srovn\u00e1n\u00ed se standardn\u00edm povlakem.<\/p><\/div><\/p>\n

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

                          Podle m\u00e9ho n\u00e1zoru je v\u00fdb\u011br spr\u00e1vn\u00e9 povrchov\u00e9 \u00fapravy a eloxov\u00e1n\u00ed hlin\u00edkov\u00fdch chladi\u010d\u016f ot\u00e1zkou rovnov\u00e1hy mezi v\u00fdkonem, trvanlivost\u00ed, cenou a estetikou. Standardn\u00ed eloxov\u00e1n\u00ed (typ II) je vhodn\u00e9 pro mnoho elektronick\u00fdch za\u0159\u00edzen\u00ed ur\u010den\u00fdch pro vnit\u0159n\u00ed pou\u017eit\u00ed a nab\u00edz\u00ed dobrou ochranu a emisivitu. Barven\u00ed poskytuje flexibilitu p\u0159i zna\u010den\u00ed bez sn\u00ed\u017een\u00ed v\u00fdkonu. Tvrd\u00fd povlak (typ III) je nejvhodn\u011bj\u0161\u00ed pro prost\u0159ed\u00ed s mechanick\u00fdm nam\u00e1h\u00e1n\u00edm, venkovn\u00edm vystaven\u00edm nebo intenzivn\u00edm pou\u017e\u00edv\u00e1n\u00edm. P\u0159izp\u016fsoben\u00edm specifikac\u00ed dan\u00e9 aplikaci zajist\u00edte, \u017ee va\u0161e chladi\u010de budou spolehliv\u00e9, budou dob\u0159e vypadat a z\u016fstanou cenov\u011b v\u00fdhodn\u00e9.<\/p>","protected":false},"excerpt":{"rendered":"

                          Large green ceramic planter holding vibrant plant on wooden table Have you ever wondered why some heat sinks last longer or look better than others? I recently faced that when sourcing extrusion finishing for aluminium parts. The right surface finishing\u2014especially anodizing\u2014can improve corrosion\u2011resistance, surface emissivity and durability of aluminium heat sinks, while making them look […]<\/p>\n","protected":false},"author":6,"featured_media":26135,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"none","_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":"both","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"footnotes":""},"categories":[1],"tags":[],"class_list":["post-26138","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\/26138","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=26138"}],"version-history":[{"count":0,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/posts\/26138\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/media\/26135"}],"wp:attachment":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/media?parent=26138"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/categories?post=26138"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/tags?post=26138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}