{"id":22679,"date":"2025-09-29T14:39:57","date_gmt":"2025-09-29T06:39:57","guid":{"rendered":"https:\/\/sinoextrud.com\/?p=22679"},"modified":"2025-09-29T14:39:57","modified_gmt":"2025-09-29T06:39:57","slug":"jak-presny-je-nas-hlinikovy-vylisek-pro-chladice","status":"publish","type":"post","link":"https:\/\/sinoextrud.com\/cs\/how-precise-is-our-aluminum-extrusion-for-heatsinks\/","title":{"rendered":"Jak p\u0159esn\u00fd je n\u00e1\u0161 hlin\u00edkov\u00fd v\u00fdlisek pro chladi\u010de?"},"content":{"rendered":"

\"obr\u00e1zek<\/p>\n

Chladi\u010de vy\u017eaduj\u00ed mal\u00e9 rozm\u011bry pro tepeln\u00fd kontakt - ale vytla\u010dov\u00e1n\u00ed nen\u00ed CNC obr\u00e1b\u011bn\u00ed. Jak p\u0159esn\u00e9 tedy m\u016f\u017eeme skute\u010dn\u011b b\u00fdt?<\/p>\n

Typick\u00e9 tolerance vytla\u010dov\u00e1n\u00ed se pohybuj\u00ed od \u00b10,2 mm do \u00b10,5 mm, ale v obroben\u00fdch oblastech m\u016f\u017eeme dos\u00e1hnout \u00b10,1 mm nebo lep\u0161\u00edch hodnot.<\/strong><\/p>\n

Pro spln\u011bn\u00ed kritick\u00fdch specifikac\u00ed \u010dasto kombinujeme \u0159\u00edzen\u00e9 vytla\u010dov\u00e1n\u00ed s n\u00e1sledn\u00fdm zpracov\u00e1n\u00edm na CNC.<\/p>\n

Jak\u00e9 jsou tolerance vytla\u010dov\u00e1n\u00ed na\u0161ich chladi\u010d\u016f?<\/h2>\n

Vytla\u010dov\u00e1n\u00ed hlin\u00edku je proces tv\u00e1\u0159en\u00ed za tepla. M\u00e1 tedy p\u0159irozen\u011b v\u011bt\u0161\u00ed tolerance ne\u017e obr\u00e1b\u011bn\u00ed za studena. Tolerance se li\u0161\u00ed podle velikosti, slo\u017eitosti a pr\u016f\u0159ezu d\u00edlu.<\/p>\n

Obecn\u00e9 rozsahy tolerance<\/h3>\n\n\n\n\n\n\n\n\n\n\n
Funkce<\/th>\nTolerance po vytla\u010den\u00ed<\/th>\nTolerance po obr\u00e1b\u011bn\u00ed<\/th>\nPozn\u00e1mky<\/th>\n<\/tr>\n<\/thead>\n
\u0160\u00ed\u0159ka \/ v\u00fd\u0161ka<\/td>\n\u00b10,2-0,5 mm<\/td>\n\u00b10,05-0,15 mm<\/td>\nExtrudovan\u00e9 tolerance rostou s velikost\u00ed<\/td>\n<\/tr>\n
Plochost<\/td>\n\u00b10,2 mm na 100 mm<\/td>\n\u00b10,01-0,05 mm (po fr\u00e9zov\u00e1n\u00ed)<\/td>\nChlazen\u00ed a zbytkov\u00e9 nap\u011bt\u00ed maj\u00ed vliv na<\/td>\n<\/tr>\n
P\u0159\u00edmost<\/td>\n0,3 mm\/m typicky<\/td>\nLep\u0161\u00ed s narovn\u00e1n\u00edm<\/td>\nDlouh\u00e9 d\u00edly jsou n\u00e1chyln\u011bj\u0161\u00ed k oh\u00fdb\u00e1n\u00ed<\/td>\n<\/tr>\n
Zkroucen\u00ed \/ deformace<\/td>\n\u0158\u00edzeno nap\u011bt\u00edm<\/td>\nOpraveno b\u011bhem kontroly kvality<\/td>\nZ\u00e1vis\u00ed na symetrii a pr\u016f\u0159ezu<\/td>\n<\/tr>\n
Otvory \/ funkce<\/td>\n\u00b10,3-0,8 mm<\/td>\n\u00b10,05 mm (obr\u00e1b\u011bn\u00e9)<\/td>\nVytla\u010dov\u00e1n\u00ed nem\u016f\u017ee zaru\u010dit p\u0159esnost otvoru<\/td>\n<\/tr>\n
D\u00e9lka (\u0159ezan\u00e9 ty\u010de)<\/td>\n\u00b10,5 mm nebo v\u00edce<\/td>\n\u00b10,1 mm (pokud je l\u00edcov\u00e1no)<\/td>\nPro p\u0159esnost je zapot\u0159eb\u00ed \u010deln\u00ed obr\u00e1b\u011bn\u00ed nebo CNC<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Tyto hodnoty jsou v odv\u011btv\u00ed vytla\u010dov\u00e1n\u00ed standardn\u00ed. Pokud nen\u00ed na v\u00fdkresu uvedeno jinak, \u0159\u00edd\u00edme se tolerancemi Asociace pro hlin\u00edk.<\/p>\n

<\/svg> Typick\u00e9 tolerance hlin\u00edkov\u00fdch v\u00fdlisk\u016f se u v\u011bt\u0161iny prvk\u016f pohybuj\u00ed od \u00b10,2 mm do \u00b10,5 mm.<\/b>Pravda<\/span><\/p>

Vzhledem k teplot\u011b, proud\u011bn\u00ed a rozta\u017enosti matrice je vytla\u010dov\u00e1n\u00ed ze sv\u00e9 podstaty m\u00e9n\u011b p\u0159esn\u00e9 ne\u017e obr\u00e1b\u011bn\u00ed.<\/p><\/div>\n

<\/svg> Extrudovan\u00e9 chladi\u010de mohou zaru\u010dit \u00b10,05 mm na v\u0161ech prvc\u00edch bez nutnosti obr\u00e1b\u011bn\u00ed.<\/b>False<\/span><\/p>

T\u011bsn\u00e9 tolerance, jako je \u00b10,05 mm, vy\u017eaduj\u00ed CNC dokon\u010dovac\u00ed pr\u00e1ce - to nen\u00ed mo\u017en\u00e9 pouze p\u0159i vytla\u010dov\u00e1n\u00ed.<\/p><\/div>\n

M\u016f\u017eeme dos\u00e1hnout rozm\u011brov\u00e9 tolerance \u00b10,1 mm?<\/h2>\n

\"obr\u00e1zek<\/p>\n

Ano, ale pouze na kl\u00ed\u010dov\u00fdch ploch\u00e1ch a pouze s \u0159\u00e1dn\u00fdm n\u00e1sledn\u00fdm zpracov\u00e1n\u00edm.<\/p>\n

U vybran\u00fdch kritick\u00fdch prvk\u016f m\u016f\u017eeme pomoc\u00ed CNC fr\u00e9zov\u00e1n\u00ed nebo obr\u00e1b\u011bn\u00ed dos\u00e1hnout \u00b10,1 mm - nebo t\u011bsn\u011bj\u0161\u00ed.<\/strong><\/p>\n

Co je mo\u017en\u00e9<\/h3>\n
    \n
  • Pouze vytla\u010dovan\u00e9 d\u00edly<\/strong>: \u00b10,2 mm-0,5 mm je re\u00e1ln\u00e9 pro v\u011bt\u0161inu profil\u016f.<\/li>\n
  • CNC dokon\u010dovan\u00e9 d\u00edly<\/strong>: \u00b10,1 mm nebo dokonce \u00b10,05 mm na z\u00e1kladn\u00edch ploch\u00e1ch, dr\u00e1\u017ek\u00e1ch, otvorech a mont\u00e1\u017en\u00edch \u0161roubech.<\/li>\n<\/ul>\n

    \u010casto to d\u011bl\u00e1me na:<\/p>\n

      \n
    • Tepeln\u011b kontaktn\u00ed plochy (z\u00e1kladn\u00ed desky)<\/li>\n
    • Vzory otvor\u016f pro \u0161rouby<\/li>\n
    • \u0160\u00ed\u0159ky dr\u00e1\u017eek pro n\u00e1suvn\u00e9 sestavy<\/li>\n
    • Koncov\u00e9 plochy, na kter\u00fdch se konektory zarovn\u00e1vaj\u00ed<\/li>\n<\/ul>\n

      Jak toho dos\u00e1hneme<\/h3>\n
        \n
      • P\u0159esn\u00e9 nastaven\u00ed vytla\u010dov\u00e1n\u00ed<\/li>\n
      • Nap\u00edn\u00e1n\u00ed a nap\u00edn\u00e1n\u00ed<\/li>\n
      • St\u00e1rnut\u00ed a \u00faleva od stresu<\/li>\n
      • CNC fr\u00e9zov\u00e1n\u00ed, vrt\u00e1n\u00ed a hoblov\u00e1n\u00ed v kritick\u00fdch z\u00f3n\u00e1ch<\/li>\n
      • Kontrola kvality b\u011bhem procesu pomoc\u00ed t\u0159men\u016f, mikrometr\u016f a sou\u0159adnicov\u00fdch m\u011b\u0159idel<\/li>\n<\/ul>\n

        Doporu\u010dujeme vyvolat pouze nezbytn\u00e9 plochy pro t\u011bsnou toleranci. Sni\u017euje to n\u00e1klady.<\/p>\n

        <\/svg> Na kl\u00ed\u010dov\u00fdch ploch\u00e1ch chladi\u010d\u016f dok\u00e1\u017eeme pomoc\u00ed CNC zpracov\u00e1n\u00ed dodr\u017eet tolerance \u00b10,1 mm.<\/b>Pravda<\/span><\/p>

        Obr\u00e1b\u011bn\u00ed kritick\u00fdch oblast\u00ed po vytla\u010dov\u00e1n\u00ed n\u00e1m umo\u017e\u0148uje splnit p\u0159\u00edsn\u00e9 po\u017eadavky.<\/p><\/div>\n

        <\/svg> Vytla\u010dov\u00e1n\u00ed bez obr\u00e1b\u011bn\u00ed m\u016f\u017ee zaru\u010dit \u00b10,1 mm v cel\u00e9m profilu.<\/b>False<\/span><\/p>

        Tepeln\u00e9 a matri\u010dn\u00ed rozd\u00edly to bez n\u00e1sledn\u00e9ho zpracov\u00e1n\u00ed znemo\u017e\u0148uj\u00ed.<\/p><\/div>\n

        Jak\u00e9 faktory ovliv\u0148uj\u00ed p\u0159esnost vytla\u010dov\u00e1n\u00ed chladi\u010de?<\/h2>\n

        \"v\u00e1lcov\u00fd<\/p>\n

        P\u0159esnost vytla\u010dov\u00e1n\u00ed z\u00e1vis\u00ed nejen na stroj\u00edch. V\u00fdsledky m\u016f\u017ee ovlivnit v\u0161e od konstrukce matrice a\u017e po chlazen\u00ed.<\/p>\n

        Mezi kl\u00ed\u010dov\u00e9 faktory ovliv\u0148uj\u00edc\u00ed rozm\u011brovou p\u0159esnost pat\u0159\u00ed konstrukce formy, teplota vytla\u010dov\u00e1n\u00ed, rychlost chlazen\u00ed a n\u00e1sledn\u00e9 procesy.<\/strong><\/p>\n

        Hlavn\u00ed vlivy<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
        Faktor<\/th>\nDopad na p\u0159esnost<\/th>\nMetoda kontroly<\/th>\n<\/tr>\n<\/thead>\n
        Design raznice<\/strong><\/td>\n\u0158\u00edd\u00ed tok, kontroluje tvar<\/td>\nVysoce p\u0159esn\u00e9 lisovac\u00ed n\u00e1stroje, kontrola opot\u0159eben\u00ed<\/td>\n<\/tr>\n
        Opot\u0159eben\u00ed<\/strong><\/td>\nZm\u011bny rozm\u011br\u016f v pr\u016fb\u011bhu \u010dasu<\/td>\nPl\u00e1novan\u00e1 \u00fadr\u017eba<\/td>\n<\/tr>\n
        Teplota vytla\u010dov\u00e1n\u00ed<\/strong><\/td>\nOvliv\u0148uje pr\u016ftok a expanzi<\/td>\nT\u011bsn\u00e1 tepeln\u00e1 regulace<\/td>\n<\/tr>\n
        Rychlost vytla\u010dov\u00e1n\u00ed<\/strong><\/td>\nOvliv\u0148uje symetrii, z\u00e1blesk, vyboulen\u00ed<\/td>\nOptimalizace pro stabilitu<\/td>\n<\/tr>\n
        Rychlost chlazen\u00ed<\/strong><\/td>\nVliv na smr\u0161\u0165ov\u00e1n\u00ed, deformace<\/td>\n\u0158\u00edzen\u00e9 chlazen\u00ed vzduchem nebo vodou<\/td>\n<\/tr>\n
        Nap\u011bt\u00ed stahov\u00e1ku<\/strong><\/td>\nZabra\u0148uje zkroucen\u00ed nebo prohnut\u00ed<\/td>\nP\u0159esn\u00e1 synchronizace<\/td>\n<\/tr>\n
        Symetrie sekc\u00ed<\/strong><\/td>\nSymetrick\u00e9 tvary se m\u00e9n\u011b deformuj\u00ed<\/td>\nDoporu\u010den\u00ed symetrick\u00e9ho uspo\u0159\u00e1d\u00e1n\u00ed<\/td>\n<\/tr>\n
        Typ slitiny<\/strong><\/td>\nR\u016fzn\u00e9 slitiny se smr\u0161\u0165uj\u00ed r\u016fzn\u011b<\/td>\nPou\u017eit\u00ed zn\u00e1m\u00fdch materi\u00e1l\u016f, jako je 6063<\/td>\n<\/tr>\n
        Slo\u017eitost profilu<\/strong><\/td>\nOstr\u00e9 rohy \/ tenk\u00e9 st\u011bny v\u00edce zkresluj\u00ed<\/td>\n\u00daprava konstrukce matrice<\/td>\n<\/tr>\n
        D\u00e9lka profilu<\/strong><\/td>\nDel\u0161\u00ed d\u00edly = v\u011bt\u0161\u00ed riziko ohnut\u00ed<\/td>\nV p\u0159\u00edpad\u011b pot\u0159eby pou\u017eijte krat\u0161\u00ed \u00faseky<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        Kroky po vytla\u010dov\u00e1n\u00ed<\/h3>\n
          \n
        • Nap\u00ednac\u00ed rovn\u00e1n\u00ed<\/strong>: zarovn\u00e1v\u00e1 ty\u010de p\u0159ed \u0159ez\u00e1n\u00edm<\/li>\n
        • St\u00e1rnut\u00ed pec\u00ed<\/strong>: ovl\u00e1d\u00e1n\u00ed vlastnost\u00ed materi\u00e1lu<\/li>\n
        • Sekund\u00e1rn\u00ed operace CNC<\/strong>: vylad\u011bn\u00ed kl\u00ed\u010dov\u00fdch funkc\u00ed<\/li>\n
        • Povrchov\u00e1 \u00faprava<\/strong>: m\u016f\u017ee p\u0159idat nebo m\u00edrn\u011b zm\u011bnit rozm\u011bry<\/li>\n<\/ul>\n

          <\/svg> Konstrukce formy a \u0159\u00edzen\u00ed chlazen\u00ed jsou hlavn\u00edmi faktory p\u0159esnosti vytla\u010dov\u00e1n\u00ed.<\/b>Pravda<\/span><\/p>

          Pr\u016ftok, smr\u0161\u0165ov\u00e1n\u00ed a v\u011brnost tvaru z\u00e1vis\u00ed na tom, jak kov prot\u00e9k\u00e1 z\u00e1pustkou a jak se po n\u00ed ochlazuje.<\/p><\/div>\n

          <\/svg> D\u00e9lka profilu nem\u00e1 vliv na toleranci p\u0159i vytla\u010dov\u00e1n\u00ed.<\/b>False<\/span><\/p>

          Del\u0161\u00ed profily se mohou b\u011bhem chlazen\u00ed oh\u00fdbat, proh\u00fdbat nebo kroutit, co\u017e ovliv\u0148uje kone\u010dn\u00e9 rozm\u011bry.<\/p><\/div>\n

          Dodr\u017eujeme normy ISO nebo jin\u00e9 normy pro tolerance?<\/h2>\n

          \"Popis<\/p>\n

          Ano - na\u0161e tolerance se \u0159\u00edd\u00ed mezin\u00e1rodn\u00edmi normami, pokud va\u0161e v\u00fdkresy nestanov\u00ed jinak.<\/p>\n

          Dodr\u017eujeme normy ISO 2768, EN 755-9 a toleran\u010dn\u00ed normy Aluminium Association pro extrudovan\u00fd hlin\u00edk.<\/strong><\/p>\n

          P\u0159\u00edslu\u0161n\u00e9 normy<\/h3>\n
            \n
          • EN 755-9<\/strong>: Pro rozm\u011brov\u00e9 tolerance hlin\u00edkov\u00fdch profil\u016f (b\u011b\u017en\u00e9 v Evrop\u011b a Asii).<\/li>\n
          • ISO 2768-m nebo f<\/strong>: Pro obecn\u00e9 tolerance obr\u00e1b\u011bn\u00ed<\/li>\n
          • ASTM B221 \/ normy Asociace pro hlin\u00edk<\/strong>: Pro americk\u00e9 standardn\u00ed profily<\/li>\n
          • Tolerance specifick\u00e9 pro z\u00e1kazn\u00edka<\/strong>: P\u0159esn\u011b se \u0159\u00edd\u00edme va\u0161\u00edm v\u00fdkresem, pokud je dod\u00e1n<\/li>\n<\/ul>\n

            P\u0159ed v\u00fdrobou v\u017edy zkontrolujeme va\u0161e 2D\/3D v\u00fdkresy a potvrd\u00edme je:<\/p>\n

              \n
            • Kter\u00e9 rozm\u011bry vy\u017eaduj\u00ed p\u0159\u00edsn\u00e1 kontrola<\/strong><\/li>\n
            • Kter\u00e9 funkce mohou m\u00edt obecn\u00e1 tolerance<\/strong><\/li>\n
            • Zda obr\u00e1b\u011bn\u00ed<\/strong> je nutn\u00e1 pro ulo\u017een\u00ed nebo funkci<\/li>\n<\/ul>\n

              Ozna\u010dujeme kritick\u00e1 funk\u010dnost (CTQ)<\/strong> rozm\u011bry v na\u0161em procesn\u00edm toku, aby byla zaji\u0161t\u011bna p\u0159esnost.<\/p>\n\n\n\n\n\n\n\n\n\n
              Standardn\u00ed<\/th>\nRozsah pou\u017eit\u00ed<\/th>\n<\/tr>\n<\/thead>\n
              EN 755-9<\/td>\nTolerance vytla\u010dov\u00e1n\u00ed podle velikosti<\/td>\n<\/tr>\n
              ISO 2768-m\/f<\/td>\nObecn\u00e9 tolerance p\u0159i obr\u00e1b\u011bn\u00ed<\/td>\n<\/tr>\n
              ASTM B221<\/td>\nSpecifikace vytla\u010dov\u00e1n\u00ed v USA<\/td>\n<\/tr>\n
              Standardy AA<\/td>\nT\u0159\u00eddy tolerance podle velikosti\/typu<\/td>\n<\/tr>\n
              Vlastn\u00ed<\/td>\nPodle v\u00fdkresu z\u00e1kazn\u00edka<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

              <\/svg> P\u0159i vytla\u010dov\u00e1n\u00ed a obr\u00e1b\u011bn\u00ed chladi\u010d\u016f se \u0159\u00edd\u00edme normami EN 755-9 a ISO 2768.<\/b>Pravda<\/span><\/p>

              Podle t\u011bchto mezin\u00e1rodn\u00edch norem se \u0159\u00edd\u00edme p\u0159i uplat\u0148ov\u00e1n\u00ed toleranc\u00ed na hlin\u00edkov\u00e9 profily a dodate\u010dn\u011b obroben\u00e9 d\u00edly.<\/p><\/div>\n

              <\/svg> Na\u0161e tolerance p\u0159i vytla\u010dov\u00e1n\u00ed jsou zalo\u017eeny pouze na vizu\u00e1ln\u00ed kontrole.<\/b>False<\/span><\/p>

              Dodr\u017eujeme rozm\u011brov\u00e9 normy a pou\u017e\u00edv\u00e1me kalibrovan\u00e9 n\u00e1stroje k ov\u011b\u0159en\u00ed shody s v\u00fdkresy.<\/p><\/div>\n

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

              Vytla\u010dov\u00e1n\u00ed hlin\u00edku poskytuje solidn\u00ed tvarovou p\u0159esnost, ale u chladi\u010d\u016f vy\u017eaduj\u00ed p\u0159\u00edsn\u00e9 tolerance dal\u0161\u00ed kroky. Kombinujeme p\u0159esn\u00e9 vytla\u010dov\u00e1n\u00ed, CNC a normy ISO, abychom dos\u00e1hli rozm\u011br\u016f a\u017e \u00b10,1 mm - p\u0159esn\u011b tam, kde je to d\u016fle\u017eit\u00e9.<\/p>","protected":false},"excerpt":{"rendered":"

              Heatsinks require tight dimensions for thermal contact\u2014but extrusion is not CNC machining. So how precise can we really go? Typical extrusion tolerances range from \u00b10.2mm to \u00b10.5mm, but we can achieve \u00b10.1mm or better in machined areas. To meet critical specs, we often combine controlled extrusion with CNC post-processing. What are the extrusion tolerances for […]<\/p>\n","protected":false},"author":6,"featured_media":22677,"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-22679","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\/22679","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=22679"}],"version-history":[{"count":0,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/posts\/22679\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/media\/22677"}],"wp:attachment":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/media?parent=22679"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/categories?post=22679"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/tags?post=22679"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}