{"id":26758,"date":"2025-12-04T12:00:08","date_gmt":"2025-12-04T04:00:08","guid":{"rendered":"https:\/\/sinoextrud.com\/?p=26758"},"modified":"2025-12-04T12:00:08","modified_gmt":"2025-12-04T04:00:08","slug":"porovnani-tepelne-vodivosti-hlinikovych-profilu","status":"publish","type":"post","link":"https:\/\/sinoextrud.com\/cs\/aluminum-extrusion-thermal-conductivity-comparison\/","title":{"rendered":"Porovn\u00e1n\u00ed tepeln\u00e9 vodivosti hlin\u00edkov\u00fdch v\u00fdlisk\u016f?"},"content":{"rendered":"

\"Kr\u00e1tk\u00e9
Kr\u00e1tk\u00e9 s\u00e9rie hlin\u00edkov\u00fdch v\u00fdlisk\u016f na zak\u00e1zku<\/figcaption><\/figure>\n<\/p>\n

N\u011bkter\u00e9 hlin\u00edkov\u00e9 profily se p\u0159\u00edli\u0161 zah\u0159\u00edvaj\u00ed, co\u017e zp\u016fsobuje poruchy osv\u011btlen\u00ed, elektroniky nebo chladic\u00edch syst\u00e9m\u016f. To \u010dasto souvis\u00ed s nevhodn\u00fdm v\u00fdb\u011brem slitiny nebo tvaru.<\/p>\n

Tepeln\u00e1 vodivost hlin\u00edkov\u00fdch profil\u016f z\u00e1vis\u00ed na typu slitiny, tvaru profilu, povrchov\u00e9 \u00faprav\u011b a kvalit\u011b v\u00fdroby. V\u00fdb\u011br spr\u00e1vn\u00e9 kombinace zlep\u0161uje odvod tepla.<\/strong><\/p>\n

Porovnejme vliv vodivosti slitiny, vliv profilu, testovac\u00ed postupy a vliv povrchov\u00e9 \u00fapravy na tepeln\u00e9 vlastnosti.<\/p>\n

Kter\u00e9 slitiny maj\u00ed nejvy\u0161\u0161\u00ed tepelnou vodivost?<\/h2>\n

\"Hlin\u00edkov\u00fd
Hlin\u00edkov\u00fd v\u00fdlisek Le\u0161t\u011bn\u00fd \u010dtvercov\u00fd tupo<\/figcaption><\/figure>\n<\/p>\n

Hlin\u00edk je p\u0159irozen\u011b dobr\u00fd vodi\u010d tepla, ale ne v\u0161echny slitiny se chovaj\u00ed stejn\u011b. Leguj\u00edc\u00ed prvky v\u00fdrazn\u011b m\u011bn\u00ed vodivost.<\/p>\n

Slitiny \u0159ady 1000 a 6000, zejm\u00e9na 1050, 6063 a 3003, nab\u00edzej\u00ed vy\u0161\u0161\u00ed tepelnou vodivost ne\u017e vysoce pevn\u00e9 slitiny \u0159ady 7000 nebo 2000.<\/strong><\/p>\n

Tepeln\u00e1 vodivost b\u011b\u017en\u00fdch extruzn\u00edch slitin<\/h3>\n\n\n\n\n\n\n\n\n\n
Slitina<\/th>\nTypick\u00e1 vodivost (W\/m\u00b7K)<\/th>\nPopis<\/th>\n<\/tr>\n<\/thead>\n
1050<\/td>\n~237<\/td>\nT\u00e9m\u011b\u0159 \u010dist\u00fd hlin\u00edk<\/td>\n<\/tr>\n
6063-T5\/T6<\/td>\n~200\u2013218<\/td>\nSkv\u011bl\u00e1 rovnov\u00e1ha pro chladi\u010de<\/td>\n<\/tr>\n
3003<\/td>\n~190\u2013210<\/td>\n\u010casto se pou\u017e\u00edv\u00e1 v aplikac\u00edch HVAC<\/td>\n<\/tr>\n
6061-T6<\/td>\n~150\u2013170<\/td>\nSiln\u00e1, st\u0159edn\u00ed vodivost<\/td>\n<\/tr>\n
7075-T6<\/td>\n~130\u2013150<\/td>\nVysok\u00e1 pevnost, n\u00edzk\u00e1 vodivost<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Slitiny s men\u0161\u00edm obsahem leguj\u00edc\u00edch prvk\u016f (jako k\u0159em\u00edk, ho\u0159\u010d\u00edk nebo m\u011b\u010f) rozptyluj\u00ed m\u00e9n\u011b elektron\u016f, co\u017e vede k lep\u0161\u00ed tepeln\u00e9 vodivosti. Proto se pro pouzdra LED diod nebo elektroniku up\u0159ednost\u0148uje slitina 6063.<\/p>\n

<\/svg> Hlin\u00edk 6063 m\u00e1 vy\u0161\u0161\u00ed tepelnou vodivost ne\u017e hlin\u00edk 6061.<\/b>Pravda<\/span><\/p>

6063 obsahuje m\u00e9n\u011b leguj\u00edc\u00edch prvk\u016f, co\u017e umo\u017e\u0148uje voln\u011bj\u0161\u00ed pohyb elektron\u016f a vy\u0161\u0161\u00ed vodivost.<\/p><\/div>
\n

<\/svg> Slitiny \u0159ady 7000 jsou v\u017edy nejlep\u0161\u00ed volbou pro tepelnou vodivost v extruz\u00edch.<\/b>False<\/span><\/p>

Slitiny \u0159ady 7000 up\u0159ednost\u0148uj\u00ed pevnost a obvykle nab\u00edzej\u00ed ni\u017e\u0161\u00ed vodivost ne\u017e slitiny \u0159ady 6000 nebo 1000.<\/p><\/div><\/p>\n

Jak tvar profil\u016f ovliv\u0148uje proud\u011bn\u00ed tepla?<\/h2>\n

\"Hlin\u00edkov\u00e9
Hlin\u00edkov\u00e9 v\u00fdlisky Minimalistick\u00e9 kancel\u00e1\u0159sk\u00e9 p\u0159\u00ed\u010dky Hlin\u00edkov\u00e9 profily<\/figcaption><\/figure>\n<\/p>\n

Tepeln\u00e1 vodivost nen\u00ed jen ot\u00e1zkou materi\u00e1lu \u2014 tvar extrudovan\u00e9ho profilu ovliv\u0148uje rychlost a rovnom\u011brnost \u0161\u00ed\u0159en\u00ed tepla.<\/p>\n

Profily s velkou plochou, tenk\u00fdmi \u017eebry nebo vnit\u0159n\u00edmi kan\u00e1ly umo\u017e\u0148uj\u00ed lep\u0161\u00ed odvod tepla d\u00edky zv\u00fd\u0161en\u00ed proud\u011bn\u00ed vzduchu a kontaktn\u00ed plochy.<\/strong><\/p>\n

Jak tvar ovliv\u0148uje tepeln\u00fd v\u00fdkon<\/h3>\n
    \n
  • Tenk\u00e9 ploutve<\/strong> zv\u00fd\u0161it povrchovou plochu a umo\u017enit pohyb vzduchu.<\/li>\n
  • Dut\u00e9 komory<\/strong> pom\u00e1h\u00e1 s proud\u011bn\u00edm tekutin a rovnom\u011brn\u00fdm rozlo\u017een\u00edm tepla.<\/li>\n
  • \u0160irok\u00e9 ploch\u00e9 z\u00e1kladny<\/strong> rozv\u00e1d\u011bt teplo mezi za\u0159\u00edzen\u00edmi.<\/li>\n
  • Rovnom\u011brn\u00e1 tlou\u0161\u0165ka st\u011bny<\/strong> zabra\u0148uje vzniku hork\u00fdch m\u00edst nebo nerovnom\u011brn\u00e9mu toku.<\/li>\n<\/ul>\n

    \"Hlin\u00edkov\u00e9
    Hlin\u00edkov\u00e9 v\u00fdlisky Ultra-mal\u00fd materi\u00e1l Hlin\u00edkov\u00fd r\u00e1mov\u00fd profil<\/figcaption><\/figure>\n<\/p>\n

    Nap\u0159\u00edklad pevn\u00e1 \u010dtvercov\u00e1 ty\u010d z materi\u00e1lu 6061 vede teplo h\u016f\u0159e ne\u017e \u017eebrovan\u00fd chladi\u010d z materi\u00e1lu 6063 p\u0159i nucen\u00e9m proud\u011bn\u00ed vzduchu, a to i p\u0159es podobnou hmotnost. Pro\u010d? Proto\u017ee \u017eebra urychluj\u00ed konvekci.<\/p>\n

    Tip pro design:<\/h3>\n

    Pou\u017e\u00edvejte symetrick\u00e9 konstrukce s proud\u011bn\u00edm vzduchu a dostate\u010dn\u00fdm rozestupem mezi \u017eebry. P\u0159i pou\u017eit\u00ed kapalinov\u00e9ho chlazen\u00ed mohou vnit\u0159n\u00ed kan\u00e1ly zdvojn\u00e1sobit v\u00fdkon.<\/p>\n

    <\/svg> Tvar profilu ovliv\u0148uje odvod tepla, i kdy\u017e je materi\u00e1l stejn\u00fd.<\/b>Pravda<\/span><\/p>

    \u017debrovan\u00e9 nebo dut\u00e9 konstrukce zvy\u0161uj\u00ed schopnost p\u0159enosu tepla do vzduchu nebo kapalin, \u010d\u00edm\u017e zlep\u0161uj\u00ed v\u00fdkon i bez zm\u011bny slitiny.<\/p><\/div>\n

    Jsou testy standardizov\u00e1ny u v\u0161ech dodavatel\u016f extruzn\u00edch profil\u016f?<\/h2>\n

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

    Ne v\u0161ichni dodavatel\u00e9 extrudovan\u00fdch profil\u016f testuj\u00ed tepelnou vodivost, zejm\u00e9na pokud jsou d\u00edly pou\u017e\u00edv\u00e1ny pro obecn\u00e9 konstruk\u010dn\u00ed \u00fa\u010dely.<\/p>\n

    Testov\u00e1n\u00ed tepeln\u00e9 vodivosti nen\u00ed u v\u0161ech dodavatel\u016f pln\u011b standardizov\u00e1no. Mnoz\u00ed se spol\u00e9haj\u00ed na zve\u0159ejn\u011bn\u00e9 \u00fadaje o slitin\u00e1ch nebo na specifick\u00e9 po\u017eadavky z\u00e1kazn\u00edk\u016f na testov\u00e1n\u00ed.<\/strong><\/p>\n

    V\u011bt\u0161ina v\u00fdrobc\u016f pou\u017e\u00edv\u00e1 datov\u00e9 listy slitin a zaji\u0161\u0165uje spr\u00e1vn\u00e9 chemick\u00e9 slo\u017een\u00ed prost\u0159ednictv\u00edm certifikace, ale:<\/p>\n

      \n
    • N\u011bkolik test\u016f tepeln\u00e9 vodivosti na ka\u017edou \u0161ar\u017ei<\/strong><\/li>\n
    • N\u011bkte\u0159\u00ed testuj\u00ed tepelnou odolnost hotov\u00fdch v\u00fdrobk\u016f.<\/strong><\/li>\n
    • Z\u00e1kazn\u00edci, kte\u0159\u00ed po\u017eaduj\u00ed tepeln\u00e9 sou\u010d\u00e1sti, mus\u00ed specifikovat zku\u0161ebn\u00ed podm\u00ednky.<\/strong><\/li>\n<\/ul>\n

      Neexistuj\u00ed \u017e\u00e1dn\u00e9 glob\u00e1ln\u011b platn\u00e9 normy ASTM nebo ISO pro tepeln\u00e9 zkou\u0161ky extrudovan\u00fdch profil\u016f, a\u010dkoli metody jako ASTM E1952<\/strong> nebo ISO 22007<\/strong> se pou\u017e\u00edvaj\u00ed ve v\u00fdzkumu a v\u00fdvoji nebo ve vysoce v\u00fdkonn\u00fdch aplikac\u00edch.<\/p>\n

      Kdy je nutn\u00e9 prov\u00e9st testov\u00e1n\u00ed?<\/h3>\n
        \n
      • Chladi\u010de LED<\/li>\n
      • Kapalinou chlazen\u00e9 konstruk\u010dn\u00ed profily<\/li>\n
      • Kryty automobilov\u00fdch bateri\u00ed<\/li>\n
      • \u017debra c\u00edvky HVAC<\/li>\n<\/ul>\n

        Pokud mus\u00ed v\u00e1\u0161 v\u00fdlisek spolehliv\u011b p\u0159en\u00e1\u0161et teplo, po\u017e\u00e1dejte o vzorovou zkou\u0161ku nebo simulaci pod zat\u00ed\u017een\u00edm.<\/p>\n

        <\/svg> Tepeln\u00e1 vodivost se rutinn\u011b testuje u v\u0161ech hlin\u00edkov\u00fdch v\u00fdlisk\u016f.<\/b>False<\/span><\/p>

        Pokud klient neur\u010d\u00ed jinak, v\u011bt\u0161ina dodavatel\u016f se spol\u00e9h\u00e1 na zn\u00e1m\u00e9 hodnoty slitin, ani\u017e by testovala ka\u017edou \u0161ar\u017ei.<\/p><\/div>
        \n

        <\/svg> Z\u00e1kazn\u00edci s tepeln\u011b technick\u00fdmi po\u017eadavky by m\u011bli od dodavatele po\u017eadovat konkr\u00e9tn\u00ed zku\u0161ebn\u00ed protokoly nebo simulace.<\/b>Pravda<\/span><\/p>

        Ne v\u0161echny v\u00fdlisky jsou testov\u00e1ny na vodivost, proto aplikace s kritick\u00fdmi teplotn\u00edmi po\u017eadavky vy\u017eaduj\u00ed dodate\u010dn\u00e9 ov\u011b\u0159en\u00ed.<\/p><\/div><\/p>\n

        Mohou povrchov\u00e9 \u00fapravy sn\u00ed\u017eit \u00farove\u0148 vodivosti?<\/h2>\n

        Dobr\u00e1 slitina a skv\u011bl\u00fd tvar mohou st\u00e1le pod\u00e1vat nedostate\u010dn\u00fd v\u00fdkon, pokud povrch zadr\u017euje teplo.<\/p>\n

        Ano, povrchov\u00e9 \u00fapravy jako eloxov\u00e1n\u00ed, lakov\u00e1n\u00ed nebo pr\u00e1\u0161kov\u00e9 lakov\u00e1n\u00ed sni\u017euj\u00ed tepelnou vodivost povrchu. \u010c\u00edm siln\u011bj\u0161\u00ed je povrchov\u00e1 \u00faprava, t\u00edm vy\u0161\u0161\u00ed je tepeln\u00e1 odolnost.<\/strong><\/p>\n

        Eloxovan\u00fd hlin\u00edk m\u00e1 tvrdou vrstvu oxidu hlinit\u00e9ho (Al\u2082O\u2083) s n\u00edzkou vodivost\u00ed 25\u201330 W\/m\u00b7K<\/strong>. Porovnejte to s hlin\u00edkem. ~200+ W\/m\u00b7K<\/strong>. Anodizace chr\u00e1n\u00ed p\u0159ed koroz\u00ed a opot\u0159eben\u00edm a z\u00e1rove\u0148 izoluje tepeln\u011b.<\/p>\n

        Vliv povrchov\u00e9 \u00fapravy na tepeln\u00fd tok<\/h3>\n\n\n\n\n\n\n\n\n\n
        Povrchov\u00e1 \u00faprava<\/th>\nTepeln\u00fd efekt<\/th>\n<\/tr>\n<\/thead>\n
        \u017d\u00e1dn\u00e1 (hol\u00fd hlin\u00edk)<\/td>\nNejlep\u0161\u00ed veden\u00ed<\/td>\n<\/tr>\n
        Tenk\u00e9 eloxov\u00e1n\u00ed<\/td>\nM\u00edrn\u00e9 sn\u00ed\u017een\u00ed<\/td>\n<\/tr>\n
        Siln\u00e9 eloxov\u00e1n\u00ed<\/td>\nM\u00edrn\u00e9 sn\u00ed\u017een\u00ed<\/td>\n<\/tr>\n
        Pr\u00e1\u0161kov\u00e9 lakov\u00e1n\u00ed<\/td>\nV\u00fdrazn\u00e9 sn\u00ed\u017een\u00ed<\/td>\n<\/tr>\n
        Nat\u0159en\u00e9 povrchy<\/td>\nSt\u0159edn\u00ed a\u017e vysok\u00fd dopad<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        Pro nekritick\u00e9 \u010d\u00e1sti je eloxov\u00e1n\u00ed v po\u0159\u00e1dku. Ale pro za\u0159\u00edzen\u00ed s vysokou tepelnou z\u00e1t\u011b\u017e\u00ed (jako jsou chladic\u00ed desky LED) jsou lep\u0161\u00ed surov\u00e9 nebo lehce upraven\u00e9 povrchy.<\/p>\n

        Konstrukt\u00e9\u0159i \u010dasto hledaj\u00ed rovnov\u00e1hu: eloxuj\u00ed pouze oblasti, kter\u00e9 nejsou v tepeln\u00e9 kontaktu, nebo pou\u017e\u00edvaj\u00ed vodiv\u00e9 povrchov\u00e9 povlaky, jako je \u010dern\u00fd oxid s lep\u0161\u00ed emisivitou.<\/p>\n

        <\/svg> Eloxov\u00e1n\u00ed hlin\u00edku zvy\u0161uje odolnost proti korozi, ale sni\u017euje tepelnou vodivost povrchu.<\/b>Pravda<\/span><\/p>

        Eloxovan\u00e1 vrstva je keramika s ni\u017e\u0161\u00ed vodivost\u00ed ne\u017e hol\u00fd hlin\u00edk, kter\u00e1 funguje jako izol\u00e1tor.<\/p><\/div>
        \n

        <\/svg> Pr\u00e1\u0161kov\u00e9 lakov\u00e1n\u00ed zlep\u0161uje tepelnou vodivost hlin\u00edkov\u00fdch profil\u016f.<\/b>False<\/span><\/p>

        Pr\u00e1\u0161kov\u00e9 lakov\u00e1n\u00ed p\u0159id\u00e1v\u00e1 silnou polymerovou vrstvu, kter\u00e1 odol\u00e1v\u00e1 toku tepla a sni\u017euje efektivn\u00ed povrchovou vodivost.<\/p><\/div><\/p>\n

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

        P\u0159i navrhov\u00e1n\u00ed tepeln\u011b funk\u010dn\u00edch hlin\u00edkov\u00fdch v\u00fdlisk\u016f zvolte slitinu s vysokou tepelnou vodivost\u00ed, jako je 6063 nebo 3003, vytvarujte ji tak, aby umo\u017e\u0148ovala proud\u011bn\u00ed vzduchu, vyhn\u011bte se siln\u00fdm povlak\u016fm a v p\u0159\u00edpad\u011b, \u017ee je d\u016fle\u017eit\u00fd p\u0159enos tepla, po\u017e\u00e1dejte o testov\u00e1n\u00ed. I ten nejlep\u0161\u00ed kov sel\u017ee, pokud povrchov\u00e1 \u00faprava nebo geometrie br\u00e1n\u00ed pohybu tepla. Se spr\u00e1vn\u00fdm designem a slitinou mohou v\u00fdlisky \u00fa\u010dinn\u011b a spolehliv\u011b odv\u00e1d\u011bt teplo v elektronice, osv\u011btlen\u00ed, elektromobilech a dal\u0161\u00edch za\u0159\u00edzen\u00edch.<\/p>","protected":false},"excerpt":{"rendered":"

        Short Run Custom Aluminum Extrusions Some aluminum extrusions run too hot \u2014 causing failures in lighting, electronics, or cooling systems. This often traces back to poor alloy or shape selection. Thermal conductivity in aluminum extrusions depends on alloy type, profile shape, surface treatments, and production quality. Choosing the right combination improves heat dissipation. Let\u2019s compare […]<\/p>\n","protected":false},"author":6,"featured_media":6445,"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":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-26758","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\/26758","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=26758"}],"version-history":[{"count":0,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/posts\/26758\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/media\/6445"}],"wp:attachment":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/media?parent=26758"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/categories?post=26758"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/tags?post=26758"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}