{"id":9388,"date":"2025-06-26T03:05:40","date_gmt":"2025-06-26T03:05:40","guid":{"rendered":"https:\/\/sinoextrud.com\/?p=9388"},"modified":"2025-06-26T03:07:19","modified_gmt":"2025-06-26T03:07:19","slug":"jak-vyrobit-hlinikovy-kryt-desky-plosnych-spoju-2","status":"publish","type":"post","link":"https:\/\/sinoextrud.com\/cs\/how-to-make-an-aluminum-pcb-enclosure-2\/","title":{"rendered":"Jak vyrobit hlin\u00edkov\u00fd kryt PCB?"},"content":{"rendered":"

\"Hlin\u00edkov\u00fd
Extrudovan\u00fd hlin\u00edkov\u00fd kryt ide\u00e1ln\u00ed pro pouzdro na desky plo\u0161n\u00fdch spoj\u016f<\/figcaption><\/figure>\n<\/p>\n

V\u00edm, \u017ee naj\u00edt p\u0159ehledn\u00fd n\u00e1vod na v\u00fdrobu hlin\u00edkov\u00e9ho krytu DPS je t\u011b\u017ek\u00e9. Pot\u0159ebujete n\u00e1vod krok za krokem.<\/p>\n

Nau\u010d\u00edte se, jak vyb\u00edrat rozm\u011bry, pou\u017e\u00edvat n\u00e1stroje, \u0159\u00eddit teplo a p\u0159ehledn\u011b dokon\u010dit sk\u0159\u00ed\u0148.<\/strong><\/p>\n

Dovolte mi, abych v\u00e1s provedl od konceptu k hotov\u00e9mu v\u00fdrobku.<\/p>\n

Jak\u00e9 rozm\u011bry jsou d\u016fle\u017eit\u00e9 p\u0159i n\u00e1vrhu hlin\u00edkov\u00e9ho krytu DPS?<\/h2>\n

Nejprve definuji velikost PCB a vnit\u0159n\u00ed prostor. P\u0159id\u00e1m tak\u00e9 prostor pro mont\u00e1\u017e, konektory a proud\u011bn\u00ed vzduchu.<\/p>\n

Mezi z\u00e1kladn\u00ed rozm\u011bry pat\u0159\u00ed plocha desky plo\u0161n\u00fdch spoj\u016f, tlou\u0161\u0165ka st\u011bny, v\u016fle a rozm\u00edst\u011bn\u00ed mont\u00e1\u017en\u00edch otvor\u016f.<\/strong><\/p>\n

\"Hlin\u00edkov\u00fd<\/figure>\n<\/p>\n

Pono\u0159te se hloub\u011bji<\/h3>\n

Kdy\u017e navrhuji hlin\u00edkov\u00fd kryt desky plo\u0161n\u00fdch spoj\u016f, za\u010d\u00edn\u00e1m potvrzen\u00edm rozm\u011br\u016f desky plo\u0161n\u00fdch spoj\u016f. To zahrnuje d\u00e9lku, \u0161\u00ed\u0159ku a v\u00fd\u0161ku desky s osazen\u00fdmi sou\u010d\u00e1stkami. V\u017edy p\u0159id\u00e1v\u00e1m alespo\u0148 2-3 mm v\u016fle na v\u0161ech stran\u00e1ch. T\u00edm se zabr\u00e1n\u00ed ru\u0161en\u00ed a zajist\u00ed se snadn\u00e9 vkl\u00e1d\u00e1n\u00ed a vyj\u00edm\u00e1n\u00ed.<\/p>\n

Pak se rozhodnu pro tlou\u0161\u0165ku st\u011bny. U mal\u00fdch sk\u0159\u00edn\u00ed poskytuj\u00ed 1,5-2mm st\u011bny dostate\u010dnou pevnost. V\u011bt\u0161\u00ed sk\u0159\u00edn\u011b mohou pot\u0159ebovat 3-4 mm. Siln\u011bj\u0161\u00ed st\u011bny zvy\u0161uj\u00ed tuhost, ale zvy\u0161uj\u00ed hmotnost a n\u00e1klady. Anal\u00fdzou velikosti sk\u0159\u00edn\u011b a jej\u00edho pou\u017eit\u00ed vyva\u017euji pevnost a spot\u0159ebu materi\u00e1lu.<\/p>\n

D\u00e1le navrhnu vnit\u0159n\u00ed mont\u00e1\u017en\u00ed prvky. P\u0159id\u00e1m dr\u017e\u00e1ky nebo z\u00e1vitov\u00e9 stojany zarovnan\u00e9 s mont\u00e1\u017en\u00edmi otvory na desce plo\u0161n\u00fdch spoj\u016f. Db\u00e1m na to, aby mont\u00e1\u017en\u00ed bossy m\u011bly 30-40% tlou\u0161\u0165ky st\u011bny na d\u00e9lku pro pevn\u00e9 uchycen\u00ed. Nap\u0159\u00edklad pokud jsou st\u011bny siln\u00e9 2 mm, vytvo\u0159\u00edm bossy vysok\u00e9 6-8?mm, aby bezpe\u010dn\u011b dr\u017eely \u0161rouby.<\/p>\n

P\u0159id\u00e1v\u00e1m tak\u00e9 v\u00fd\u0159ezy pro konektory, kabely, p\u0159ep\u00edna\u010de a otvory pro displej. Zm\u011b\u0159\u00edm specifikace konektor\u016f a kolem ka\u017ed\u00e9ho otvoru ponech\u00e1m 1 mm v\u016fle. To usnad\u0148uje zasunut\u00ed a zabra\u0148uje kontaktu s kovem.<\/p>\n

Pak nech\u00e1m prostor pro tepeln\u00e9 podlo\u017eky nebo kan\u00e1ly pro proud\u011bn\u00ed vzduchu. Pokud jsou na desce plo\u0161n\u00fdch spoj\u016f \u010dipy, kter\u00e9 generuj\u00ed teplo, ponech\u00e1m nad deskou prostor pro proud\u011bn\u00ed vzduchu nebo rozptylova\u010d tepla.<\/p>\n

Nakonec navrhnu vn\u011bj\u0161\u00ed rozm\u011bry a zv\u00e1\u017e\u00edm mont\u00e1\u017en\u00ed patky nebo p\u0159\u00edrubu pro mont\u00e1\u017e na panel. Pokud bude sk\u0159\u00ed\u0148 namontov\u00e1na na st\u011bnu, p\u0159id\u00e1m p\u0159\u00edruby p\u0159esahuj\u00edc\u00ed sk\u0159\u00ed\u0148 o 5-10 mm a vzory otvor\u016f pro \u0161rouby.<\/p>\n

Zde je shrnut\u00ed z\u00e1kladn\u00edch rozm\u011br\u016f:<\/p>\n\n\n\n\n\n\n\n\n\n
Funkce<\/th>\nDoporu\u010den\u00fd rozm\u011br<\/th>\n<\/tr>\n<\/thead>\n
Vymezen\u00ed plo\u0161n\u00fdch spoj\u016f<\/td>\nVelikost PCB + 2-3?mm na ka\u017ed\u00e9 stran\u011b<\/td>\n<\/tr>\n
Tlou\u0161\u0165ka st\u011bny<\/td>\n1,5-4?mm v z\u00e1vislosti na velikosti a pou\u017eit\u00ed<\/td>\n<\/tr>\n
V\u00fd\u0161ka uchycen\u00ed \u0161\u00e9fa<\/td>\n3\u00d7 tlou\u0161\u0165ka st\u011bny<\/td>\n<\/tr>\n
V\u00fd\u0159ezy pro konektory<\/td>\nSpecifikace d\u00edlu + 1?mm v\u016fle<\/td>\n<\/tr>\n
P\u0159\u00edruby\/nohy<\/td>\nP\u0159esahuj\u00ed 5-10?mm za kryt<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n\n
Typ odbaven\u00ed<\/th>\n\u00da\u010del<\/th>\n<\/tr>\n<\/thead>\n
Bo\u010dn\u00ed voln\u00fd prostor<\/td>\nZabra\u0148te t\u0159en\u00ed desek nebo kabel\u016f o st\u011bny<\/td>\n<\/tr>\n
V\u00fd\u0161kov\u00fd odstup<\/td>\nProstor pro vysok\u00e9 komponenty a proud\u011bn\u00ed vzduchu<\/td>\n<\/tr>\n
Mont\u00e1\u017en\u00ed v\u016fle<\/td>\nZajist\u011bte, aby \u0161rouby a stojany bezpe\u010dn\u011b upevnily desky plo\u0161n\u00fdch spoj\u016f.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

T\u00edmto pe\u010dliv\u00fdm pl\u00e1nov\u00e1n\u00edm rozm\u011br\u016f se p\u0159edejde b\u011b\u017en\u00fdm chyb\u00e1m, jako jsou desky, kter\u00e9 po pota\u017een\u00ed nesed\u00ed, nebo nesouosost v\u00fd\u0159ez\u016f. P\u0159ed dokon\u010den\u00edm n\u00e1vrhu v\u017edy dvakr\u00e1t zkontroluji datov\u00e9 listy sou\u010d\u00e1stek a v\u00fdrobn\u00ed tolerance.<\/p>\n

<\/svg> V\u00fd\u0161ka \u0161rouben\u00ed se rovn\u00e1 tlou\u0161\u0165ce st\u011bny je dostate\u010dn\u00e1.<\/b>False<\/span><\/p>

Dr\u017e\u00e1ky \u0161\u00e9f\u016f by m\u011bly b\u00fdt vy\u0161\u0161\u00ed (asi 3\u00d7 tlou\u0161\u0165ka st\u011bny), aby se spr\u00e1vn\u011b zachytily z\u00e1vity.<\/p><\/div>
\n

<\/svg> P\u0159id\u00e1n\u00edm 2-3 mm v\u016fle kolem desky plo\u0161n\u00fdch spoj\u016f se zabr\u00e1n\u00ed ru\u0161en\u00ed.<\/b>Pravda<\/span><\/p>

Zaji\u0161\u0165uje, aby deska pohodln\u011b sed\u011bla a umo\u017e\u0148ovala tolerance.<\/p><\/div><\/p>\n

Jak\u00e9 n\u00e1stroje a stroje se pou\u017e\u00edvaj\u00ed k v\u00fdrob\u011b kryt\u016f desek plo\u0161n\u00fdch spoj\u016f?<\/h2>\n

Pou\u017e\u00edv\u00e1m CNC fr\u00e9zky, vrta\u010dky, pily a dokon\u010dovac\u00ed n\u00e1stroje. U s\u00e9riov\u00e9 v\u00fdroby m\u016f\u017eeme p\u0159idat elektroerozivn\u00ed obr\u00e1b\u011bn\u00ed, lisov\u00e1n\u00ed nebo vytla\u010dov\u00e1n\u00ed.<\/p>\n

Mezi b\u011b\u017en\u00e9 stroje pat\u0159\u00ed CNC fr\u00e9zky, laserov\u00e9 \u0159ez\u00e1n\u00ed, pily, z\u00e1vito\u0159ezy a za\u0159\u00edzen\u00ed pro povrchovou \u00fapravu.<\/strong><\/p>\n

\"Hlin\u00edkov\u00fd<\/figure>\n<\/p>\n

Pono\u0159te se hloub\u011bji<\/h3>\n

P\u0159i v\u00fdrob\u011b hlin\u00edkov\u00fdch kryt\u016f desek plo\u0161n\u00fdch spoj\u016f \u010dasto za\u010d\u00edn\u00e1m se surov\u00fdmi plechy nebo lisovan\u00fdmi profily.<\/p>\n

Pokud pou\u017eiji hlin\u00edkov\u00fd plech, na\u0159e\u017eu ho na tvar pomoc\u00ed p\u00e1sov\u00e9 pily, pily na desky nebo laserov\u00e9 \u0159eza\u010dky. Laserov\u00e9 \u0159ez\u00e1n\u00ed je vhodn\u00e9 pro p\u0159esn\u00e9 a hladk\u00e9 hrany. V p\u0159\u00edpad\u011b extruze \u0159e\u017eu extrudovan\u00e9 ty\u010de na pile na d\u00e9lku.<\/p>\n

Dal\u0161\u00edm krokem je fr\u00e9zov\u00e1n\u00ed. Pro tvarov\u00e1n\u00ed krytu pou\u017e\u00edv\u00e1m CNC fr\u00e9zku. D\u00edl zajist\u00edm ve sv\u011br\u00e1ku nebo v p\u0159\u00edpravku. Pot\u00e9 prov\u00e1d\u00edm operace:<\/p>\n

    \n
  • \u010celn\u00ed fr\u00e9zov\u00e1n\u00ed pro rovn\u00e9 vn\u011bj\u0161\u00ed povrchy<\/li>\n
  • Fr\u00e9zov\u00e1n\u00ed kapes pro vnit\u0159n\u00ed v\u016fle<\/li>\n
  • Od\u0159ez\u00e1v\u00e1n\u00ed v\u00ed\u010dek nebo p\u0159\u00edrub<\/li>\n
  • P\u0159id\u00e1n\u00ed \u00fachyt\u016f pro \u0161\u00e9fy a samostatn\u00fdch prvk\u016f<\/li>\n
  • Vrt\u00e1n\u00ed otvor\u016f pro \u0161rouby, konektory a v\u011btrac\u00ed otvory<\/li>\n<\/ul>\n

    Typick\u00e9 CNC stroje jsou t\u0159\u00edos\u00e9 fr\u00e9zky, i kdy\u017e \u010dty\u0159os\u00e9 nab\u00edzej\u00ed v\u011bt\u0161\u00ed flexibilitu pro zak\u0159iven\u00e9 tvary.<\/p>\n

    Po CNC jsem z\u00e1vitov\u00e9 otvory zalepil. Pou\u017e\u00edv\u00e1m z\u00e1vito\u0159ez nebo ru\u010dn\u00ed z\u00e1vitn\u00edky. Db\u00e1m na to, aby \u0161rouby byly rovn\u00e9 a \u010dist\u00e9.<\/p>\n

    Pokud pot\u0159ebuji v\u011btrac\u00ed otvory nebo v\u00fd\u0159ezy, pou\u017e\u00edv\u00e1m bu\u010f CNC, nebo laserov\u00e9 \u010di d\u011brovac\u00ed n\u00e1stroje. \u0158ez\u00e1n\u00ed laserem d\u00e1v\u00e1 \u010dist\u00e9 hrany, ale m\u016f\u017ee b\u00fdt t\u0159eba o\u010distit hrany \u00fakosu.<\/p>\n

    U n\u00e1ro\u010dn\u011bj\u0161\u00edch tvar\u016f mohu pou\u017e\u00edt elektroerozivn\u00ed obr\u00e1b\u011bn\u00ed pro vy\u0159ez\u00e1n\u00ed p\u0159esn\u00fdch profil\u016f nebo vnit\u0159n\u00edch dr\u00e1\u017eek. Elektroerozivn\u00ed obr\u00e1b\u011bn\u00ed je pomalej\u0161\u00ed, ale p\u0159esn\u00e9 s p\u0159esnost\u00ed \u00b10,01 mm.<\/p>\n

    Pot\u00e9 zkontroluji ulo\u017een\u00ed s deskou plo\u0161n\u00fdch spoj\u016f. Vlo\u017e\u00edm desku, vyzkou\u0161\u00edm \u0161rouby a konektory. V p\u0159\u00edpad\u011b pot\u0159eby se vr\u00e1t\u00edm a uprav\u00edm CNC k\u00f3d.<\/p>\n

    Po v\u00fdrob\u011b odjehl\u00edm hrany pomoc\u00ed kart\u00e1\u010d\u016f, bub\u00ednk\u016f nebo ru\u010dn\u00edch n\u00e1stroj\u016f. Odstra\u0148ov\u00e1n\u00ed ot\u0159ep\u016f zabra\u0148uje po\u0161kozen\u00ed ostr\u00fdch hran desek plo\u0161n\u00fdch spoj\u016f nebo u\u017eivatel\u016f.<\/p>\n

    Pro v\u011bt\u0161\u00ed objemy je rychlej\u0161\u00ed lisov\u00e1n\u00ed nebo vytla\u010dov\u00e1n\u00ed a CNC dokon\u010dov\u00e1n\u00ed. Vytla\u010duji profily ve tvaru U nebo L a p\u0159id\u00e1v\u00e1m CNC prvky. Kombinuje se tak efektivn\u00ed tv\u00e1\u0159en\u00ed s p\u0159esn\u00fdm obr\u00e1b\u011bn\u00edm.<\/p>\n

    V sekund\u00e1rn\u00edch stroj\u00edch pak mohu p\u0159idat z\u00e1vitn\u00edky, z\u00e1hlubn\u00edky nebo stojany. Nakonec zaznamen\u00e1v\u00e1m nastaven\u00ed stroje a \u010das nastaven\u00ed, aby dal\u0161\u00ed s\u00e9rie byly konzistentn\u00ed.<\/p>\n

    Zde je seznam n\u00e1stroj\u016f:<\/p>\n\n\n\n\n\n\n\n\n\n\n
    N\u00e1stroj\/stroj<\/th>\n\u00da\u010del<\/th>\n<\/tr>\n<\/thead>\n
    CNC fr\u00e9zka<\/td>\nTvar \u010deln\u00edch ploch, kapes a otvor\u016f sk\u0159\u00edn\u011b<\/td>\n<\/tr>\n
    Laserov\u00e1 \u0159eza\u010dka<\/td>\nP\u0159esn\u00e9 \u0159ez\u00e1n\u00ed plechov\u00fdch panel\u016f nebo v\u00fd\u0159ez\u016f<\/td>\n<\/tr>\n
    Pila (p\u00e1sov\u00e1 nebo deskov\u00e1)<\/td>\n\u0158ez\u00e1n\u00ed surov\u00e9ho hlin\u00edku na hrubou velikost<\/td>\n<\/tr>\n
    Dr\u00e1tov\u00e9 elektroerozivn\u00ed obr\u00e1b\u011bn\u00ed<\/td>\n\u0158ez\u00e1n\u00ed p\u0159esn\u00fdch vnit\u0159n\u00edch dr\u00e1\u017eek a slo\u017eit\u00fdch profil\u016f<\/td>\n<\/tr>\n
    N\u00e1stroje pro \u0159ez\u00e1n\u00ed z\u00e1vit\u016f<\/td>\nP\u0159id\u00e1n\u00ed z\u00e1vit\u016f do \u0161rouben\u00ed nebo otvor\u016f<\/td>\n<\/tr>\n
    N\u00e1stroje na odstra\u0148ov\u00e1n\u00ed ot\u0159ep\u016f<\/td>\nHladk\u00e9 hrany a ochrana proti ot\u0159ep\u016fm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n\n
    Zp\u016fsob v\u00fdroby<\/th>\nNejlep\u0161\u00ed p\u0159\u00edpad pou\u017eit\u00ed<\/th>\n<\/tr>\n<\/thead>\n
    CNC ze sochoru<\/td>\nN\u00edzk\u00fd a\u017e st\u0159edn\u00ed objem, vysok\u00e1 p\u0159esnost<\/td>\n<\/tr>\n
    Vytla\u010dov\u00e1n\u00ed + CNC<\/td>\nSt\u0159edn\u00ed objem, standardn\u00ed profilov\u00e9 proveden\u00ed<\/td>\n<\/tr>\n
    Lisov\u00e1n\u00ed + oh\u00fdb\u00e1n\u00ed<\/td>\nVelk\u00fd objem, jednoduch\u00e9 tvary krabic<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Db\u00e1m na to, aby obsluha dodr\u017eovala parametry n\u00e1stroje. Nap\u0159\u00edklad hlin\u00edk se \u010dist\u00ed p\u0159i 3000 ot\u00e1\u010dk\u00e1ch za minutu a karbidov\u00fdmi fr\u00e9zami. P\u0159i nespr\u00e1vn\u00fdch ot\u00e1\u010dk\u00e1ch se fr\u00e9za m\u016f\u017ee zadrh\u00e1vat nebo se m\u016f\u017ee zad\u0159\u00edt. Nastaven\u00ed zaznamen\u00e1v\u00e1m pro zp\u011btnou sledovatelnost d\u00edl\u016f.<\/p>\n

    Tento \u0159et\u011bzec n\u00e1stroj\u016f zaji\u0161\u0165uje, \u017ee ka\u017ed\u00fd d\u00edl je p\u0159esn\u00fd, opakovateln\u00fd a bezpe\u010dn\u00fd pro pou\u017eit\u00ed na desk\u00e1ch plo\u0161n\u00fdch spoj\u016f.<\/p>\n

    <\/svg> \u0158ez\u00e1n\u00ed laserem je u hlin\u00edku pomalej\u0161\u00ed ne\u017e fr\u00e9zov\u00e1n\u00ed CNC.<\/b>False<\/span><\/p>

    \u0158ez\u00e1n\u00ed laserem je \u010dasto rychlej\u0161\u00ed a poskytuje \u010dist\u0161\u00ed hrany, i kdy\u017e n\u00e1klady se li\u0161\u00ed.<\/p><\/div>
    \n

    <\/svg> Dr\u00e1tov\u00e9 elektroerozivn\u00ed obr\u00e1b\u011bn\u00ed m\u016f\u017ee dos\u00e1hnout p\u0159esnosti \u00b10,01 mm.<\/b>Pravda<\/span><\/p>

    Dr\u00e1tov\u00e9 elektroerozivn\u00ed obr\u00e1b\u011bn\u00ed je zn\u00e1m\u00e9 vysokou p\u0159esnost\u00ed slo\u017eit\u00fdch \u0159ez\u016f.<\/p><\/div><\/p>\n

    Jak zajist\u00edte odvod tepla v hlin\u00edkov\u00fdch pouzdrech s deskami plo\u0161n\u00fdch spoj\u016f?<\/h2>\n

    Vyu\u017e\u00edv\u00e1m tepelnou vodivost, zv\u011bt\u0161uji povrch a p\u0159id\u00e1v\u00e1m proud\u011bn\u00ed vzduchu. Spol\u00e9h\u00e1m tak\u00e9 na materi\u00e1ly tepeln\u00e9ho rozhran\u00ed (TIM).<\/p>\n

    Dobr\u00fd management tepla vyu\u017e\u00edv\u00e1 st\u011bny sk\u0159\u00edn\u011b, \u017eebra, podlo\u017eky, v\u011btrac\u00ed otvory nebo ventil\u00e1tory k odv\u00e1d\u011bn\u00ed tepla z desky plo\u0161n\u00fdch spoj\u016f.<\/strong><\/p>\n

    \"CNC<\/figure>\n<\/p>\n

    Pono\u0159te se hloub\u011bji<\/h3>\n

    Hlin\u00edk je dobr\u00fdm vodi\u010dem tepla. Pro efektivn\u00ed \u0159\u00edzen\u00ed tepla navrhuji p\u0159\u00edm\u00e9 tepeln\u00e9 cesty od hork\u00fdch komponent ke st\u011bn\u00e1m sk\u0159\u00edn\u011b. To znamen\u00e1 um\u00edstit \u010dip p\u0159\u00edmo vedle kovov\u00e9 st\u011bny nebo pou\u017e\u00edt tepeln\u00e9 podlo\u017eky k p\u0159eklenut\u00ed mezery.<\/p>\n

    \u010casto pou\u017e\u00edv\u00e1m vnit\u0159n\u00ed rozvad\u011b\u010de tepla: ploch\u00e9 desky nebo st\u011bny uvnit\u0159 sk\u0159\u00edn\u011b v p\u0159\u00edm\u00e9m kontaktu s deskou plo\u0161n\u00fdch spoj\u016f, pak spojen\u00e9 s vn\u011bj\u0161\u00edm povrchem. Vyr\u00e1b\u00edm je do zadn\u00edho panelu nebo v\u00edka. Na kontakt nanesu tepeln\u00e9 mazivo nebo lepidlo.<\/p>\n

    Kdy\u017e p\u0159irozen\u00e1 konvekce nesta\u010d\u00ed, p\u0159id\u00e1m \u017eebra nebo v\u011btrac\u00ed otvory. Ploutve zv\u011bt\u0161uj\u00ed plochu povrchu a napom\u00e1haj\u00ed tak chlazen\u00ed. V horn\u00edm a doln\u00edm panelu jsem navrhl v\u011btrac\u00ed otvory, kter\u00e9 umo\u017e\u0148uj\u00ed proud\u011bn\u00ed vzduchu. Vzduch proud\u00ed dovnit\u0159 spodn\u00edm panelem, p\u0159i zah\u0159\u00edv\u00e1n\u00ed stoup\u00e1 a vystupuje horn\u00edmi otvory.<\/p>\n

    Pokud za\u0159\u00edzen\u00ed pracuje za horka nebo v uzav\u0159en\u00fdch prostor\u00e1ch, integruji mal\u00fd ventil\u00e1tor. Vy\u0159\u00edznu mont\u00e1\u017en\u00ed otvory pro ventil\u00e1tory nebo dmychadla. P\u0159id\u00e1m s\u00ed\u0165ku nebo m\u0159\u00ed\u017eku pro ochranu a kan\u00e1ly pro proud\u011bn\u00ed vzduchu, kter\u00e9 vedou vzduch p\u0159es hork\u00e9 z\u00f3ny.<\/p>\n

    Tepeln\u00e9 simulace mi pom\u00e1haj\u00ed zkontrolovat tepeln\u00e9 dr\u00e1hy a z\u00edskat ust\u00e1lenou teplotu. Upravuji tlou\u0161\u0165ku st\u011bn, konstrukci \u017eeber a velikost ventila\u010dn\u00edch otvor\u016f, abych udr\u017eel c\u00edlovou teplotu na desce plo\u0161n\u00fdch spoj\u016f.<\/p>\n

    Zva\u017euji tak\u00e9 lakov\u00e1n\u00ed nebo povrchovou \u00fapravu. Eloxov\u00e1n\u00ed m\u016f\u017ee m\u00edrn\u011b sn\u00ed\u017eit p\u0159enos tepla, ale jen o n\u011bkolik procent. Barva m\u016f\u017ee sn\u00ed\u017eit p\u0159enos tepla v\u00edce. Nejd\u0159\u00edve tedy um\u00edst\u00edm tepeln\u011b kritick\u00e9 cesty a pak p\u0159id\u00e1m povrchovou \u00fapravu pouze tam, kde je to nutn\u00e9, nebo ponech\u00e1m d\u00edly bez povrchov\u00e9 \u00fapravy.<\/p>\n

    P\u0159i testov\u00e1n\u00ed jsem provedl test tepeln\u00e9 z\u00e1t\u011b\u017ee. Nap\u00e1j\u00edm desku plo\u0161n\u00fdch spoj\u016f p\u0159i maxim\u00e1ln\u00edm zat\u00ed\u017een\u00ed a pomoc\u00ed \u010didel zaznamen\u00e1v\u00e1m teploty v kl\u00ed\u010dov\u00fdch bodech. Kontroluji, zda jsou dodr\u017eeny n\u00e1vrhov\u00e9 limity (obvykle <85?\u00b0C pro mnoho sou\u010d\u00e1stek). Pokud jsou teploty p\u0159\u00edli\u0161 vysok\u00e9, p\u0159epracuji n\u00e1vrh s lep\u0161\u00edm veden\u00edm nebo v\u011bt\u0161\u00edm proud\u011bn\u00edm vzduchu.<\/p>\n

    Zaznamen\u00e1v\u00e1m tepeln\u00e1 data a hl\u00e1s\u00edm je spolu s d\u00edlem. To pom\u00e1h\u00e1 klient\u016fm ov\u011b\u0159it v\u00fdkon p\u0159ed odesl\u00e1n\u00edm.<\/p>\n

    Zde je shrnut\u00ed:<\/p>\n\n\n\n\n\n\n\n\n
    Tepeln\u00e1 dr\u00e1ha<\/th>\nP\u0159\u00edstup k n\u00e1vrhu<\/th>\n<\/tr>\n<\/thead>\n
    Veden\u00ed<\/td>\nDPS ke kovov\u00e9 st\u011bn\u011b p\u0159es tepelnou podlo\u017eku\/mazivo<\/td>\n<\/tr>\n
    Konvekce<\/td>\nV\u011btrac\u00ed otvory nebo ventil\u00e1tory pro proud\u011bn\u00ed vzduchu<\/td>\n<\/tr>\n
    Rozmetadla\/ploutve<\/td>\nIntern\u00ed nebo extern\u00ed pro zv\u00fd\u0161en\u00ed rozptylu<\/td>\n<\/tr>\n
    Povrchov\u00e1 \u00faprava<\/td>\nVyhn\u011bte se n\u00e1t\u011br\u016fm, kter\u00e9 sni\u017euj\u00ed p\u0159enos tepla<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n
    Zku\u0161ebn\u00ed metoda<\/th>\n\u00da\u010del<\/th>\n<\/tr>\n<\/thead>\n
    Tepeln\u00e1 simulace<\/td>\nModelov\u00e1 teplota v ust\u00e1len\u00e9m stavu p\u0159i zat\u00ed\u017een\u00ed<\/td>\n<\/tr>\n
    Tepeln\u00fd test<\/td>\nM\u011b\u0159en\u00ed skute\u010dn\u00e9 teploty v re\u00e1ln\u00fdch podm\u00ednk\u00e1ch<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Zam\u011b\u0159en\u00edm se na tyto metody zaji\u0161\u0165uji, \u017ee sk\u0159\u00ed\u0148 udr\u017euje elektroniku v chladu, spolehliv\u011b a bezpe\u010dn\u011b.<\/p>\n

    <\/svg> Eloxov\u00e1n\u00ed v\u00fdrazn\u011b zvy\u0161uje odvod tepla.<\/b>False<\/span><\/p>

    Eloxov\u00e1n\u00ed zvy\u0161uje tepeln\u00fd odpor jen minim\u00e1ln\u011b a v\u00fdrazn\u011b nezlep\u0161uje p\u0159enos tepla.<\/p><\/div>
    \n

    <\/svg> Tepeln\u00e9 podlo\u017eky pom\u00e1haj\u00ed p\u0159en\u00e1\u0161et teplo z desky plo\u0161n\u00fdch spoj\u016f do krytu.<\/b>Pravda<\/span><\/p>

    Vypl\u0148uj\u00ed vzduchov\u00e9 mezery a vytv\u00e1\u0159ej\u00ed cesty pro veden\u00ed tepla.<\/p><\/div><\/p>\n

    Jak\u00e9 mo\u017enosti povrchov\u00e9 \u00fapravy jsou nejlep\u0161\u00ed pro hlin\u00edkov\u00e9 kryty desek plo\u0161n\u00fdch spoj\u016f?<\/h2>\n

    Povlaky vyb\u00edr\u00e1m na z\u00e1klad\u011b vzhledu, odolnosti a pot\u0159eb EMI. Nab\u00edz\u00edm eloxov\u00e1n\u00ed, pr\u00e1\u0161kov\u00e9 lakov\u00e1n\u00ed, kart\u00e1\u010dovan\u00e9 nebo EMI t\u011bsn\u011bn\u00ed.<\/p>\n

    Mo\u017enosti povrchov\u00e9 \u00fapravy zahrnuj\u00ed eloxov\u00e1n\u00ed, pr\u00e1\u0161kov\u00e9 lakov\u00e1n\u00ed, kart\u00e1\u010dovan\u00fd povrch, lakov\u00e1n\u00ed a \u00fapravu st\u00edn\u011bn\u00ed proti EMI.<\/strong><\/p>\n

    \"Tvrd\u00fd<\/figure>\n<\/p>\n

    Pono\u0159te se hloub\u011bji<\/h3>\n

    Povrchov\u00e1 \u00faprava chr\u00e1n\u00ed hlin\u00edk a zlep\u0161uje vzhled. Za\u010d\u00edn\u00e1m eloxov\u00e1n\u00edm. Tento elektrochemick\u00fd proces vytv\u00e1\u0159\u00ed na povrchu kovu oxid. Nab\u00edz\u00ed ochranu proti korozi a p\u0159irozen\u00fd kovov\u00fd vzhled. Vyb\u00edr\u00e1m typ II pro standardn\u00ed pou\u017eit\u00ed nebo typ III (tvrd\u00fd elox) pro odolnost proti opot\u0159eben\u00ed. Mohu p\u0159idat barviva (\u010dern\u00e9, st\u0159\u00edbrn\u00e9, modr\u00e9) pro estetick\u00e9 nebo k\u00f3dovac\u00ed \u00fa\u010dely.<\/p>\n

    Pak nab\u00edz\u00edm pr\u00e1\u0161kov\u00e9 lakov\u00e1n\u00ed. Jedn\u00e1 se o siln\u011bj\u0161\u00ed barevnou povrchovou \u00fapravu, kter\u00e1 se nan\u00e1\u0161\u00ed jako such\u00fd pr\u00e1\u0161ek a pot\u00e9 se vypaluje. Nab\u00edz\u00ed trvanlivou barvu a dobrou odolnost proti korozi. Pr\u00e1\u0161kov\u00e9 lakov\u00e1n\u00ed je ide\u00e1ln\u00ed pro venkovn\u00ed nebo pr\u016fmyslov\u00e9 pou\u017eit\u00ed. P\u0159id\u00e1v\u00e1 v\u0161ak na tlou\u0161\u0165ce (30-60?\u03bcm) a m\u00edrn\u011b sni\u017euje tepelnou vodivost.<\/p>\n

    Pro surov\u00fd kovov\u00fd vzhled pou\u017e\u00edv\u00e1m kart\u00e1\u010dovan\u00fd povrch. Le\u0161t\u00edm brusn\u00fdmi p\u00e1sy, pot\u00e9 eloxuji nebo nanesu bezbarv\u00fd lak. T\u00edm z\u00edsk\u00e1te \u010dist\u00fd, strukturovan\u00fd vzhled. Kart\u00e1\u010dovan\u00fd povrch dob\u0159e neskr\u00fdv\u00e1 stopy po obr\u00e1b\u011bn\u00ed, tak\u017ee d\u00edly mus\u00ed b\u00fdt \u0161etrn\u00e9 ke stroji.<\/p>\n

    Pokud je vy\u017eadov\u00e1no st\u00edn\u011bn\u00ed EMI, p\u0159id\u00e1m vnit\u0159n\u00ed vodiv\u00fd n\u00e1t\u011br nebo pou\u017eiji t\u011bsn\u011bn\u00ed z hlin\u00edkov\u00e9 f\u00f3lie kolem \u0161v\u016f. Mohu tak\u00e9 vynechat n\u00e1t\u011br na sty\u010dn\u00fdch ploch\u00e1ch, abych umo\u017enil kontakt kovu s kovem.<\/p>\n

    Pro n\u00edzkoobjemov\u00e9 barvy nebo specifick\u00e9 barvy RAL pou\u017e\u00edv\u00e1m lakov\u00e1n\u00ed (tekut\u00fd sprej). Poskytuje flexibilitu, ale m\u016f\u017ee b\u00fdt m\u00e9n\u011b trvanliv\u00fd ne\u017e pr\u00e1\u0161kov\u00fd.<\/p>\n

    \u010casto kombinuji povrchov\u00e9 \u00fapravy: nap\u0159\u00edklad kart\u00e1\u010dovan\u00fd povrch viditeln\u00e9ho v\u00edka a eloxovan\u00fd vnit\u0159ek. Nebo pr\u00e1\u0161kov\u00fd lak zvenku a surov\u00fd hlin\u00edk zevnit\u0159 pro vodivost.<\/p>\n

    Zde je srovn\u00e1n\u00ed dokon\u010den\u00ed:<\/p>\n\n\n\n\n\n\n\n\n\n
    Typ povrchov\u00e9 \u00fapravy<\/th>\nKlady<\/th>\nNev\u00fdhody<\/th>\n<\/tr>\n<\/thead>\n
    Eloxov\u00e1n\u00ed (typ II)<\/td>\nOdoln\u00fd, p\u0159irozen\u00fd vzhled, dobr\u00e1 koroze<\/td>\nOmezen\u00e1 barva, m\u00edrn\u00e1 tepeln\u00e1 bari\u00e9ra<\/td>\n<\/tr>\n
    Tvrd\u00fd elox (III)<\/td>\nVelmi hou\u017eevnat\u00e9, odoln\u00e9 proti opot\u0159eben\u00ed<\/td>\nDra\u017e\u0161\u00ed, omezen\u00e9 barvy<\/td>\n<\/tr>\n
    Pr\u00e1\u0161kov\u00fd lak<\/td>\nV\u00edce barev, siln\u00e9, odoln\u00e9<\/td>\nSiln\u00e1 povrchov\u00e1 \u00faprava, m\u00edrn\u00e1 tepeln\u00e1 izolace<\/td>\n<\/tr>\n
    Kart\u00e1\u010dovan\u00fd + \u010dir\u00fd<\/td>\nP\u0159\u00edrodn\u00ed textura, modern\u00ed vzhled<\/td>\nVykazuje stopy po obr\u00e1b\u011bn\u00ed, pot\u0159ebuje bezbarv\u00fd n\u00e1t\u011br<\/td>\n<\/tr>\n
    Tekut\u00e1 barva<\/td>\nVlastn\u00ed barva, flexibiln\u00ed pou\u017eit\u00ed<\/td>\nM\u00e9n\u011b odoln\u00e9 ne\u017e pr\u00e1\u0161ek<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n\n
    Mo\u017enost EMI<\/th>\nP\u0159\u00edpad pou\u017eit\u00ed<\/th>\n<\/tr>\n<\/thead>\n
    Vodiv\u00fd n\u00e1t\u011br<\/td>\nVnit\u0159n\u00ed st\u00edn\u011bn\u00ed pro za\u0159\u00edzen\u00ed citliv\u00e1 na r\u00e1diov\u00e9 vlny<\/td>\n<\/tr>\n
    Hlin\u00edkov\u00e1 t\u011bsn\u011bn\u00ed<\/td>\nT\u011bsn\u011bn\u00ed \u0161v\u016f a prevence \u00fanik\u016f r\u00e1diov\u00fdch vln<\/td>\n<\/tr>\n
    Hol\u00e9 sty\u010dn\u00e9 plochy<\/td>\nKontakt kov na kov pro uzemn\u011bn\u00ed<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Zve\u0159ej\u0148uji specifikace dokon\u010dov\u00e1n\u00ed pro klienty. To zahrnuje tlou\u0161\u0165ku, barevn\u00fd k\u00f3d, tvrdost a vodivost. Tak\u00e9 zas\u00edl\u00e1m vzorov\u00e9 d\u00edly ke schv\u00e1len\u00ed p\u0159ed plnou s\u00e9ri\u00ed.<\/p>\n

    To zajist\u00ed, \u017ee sk\u0159\u00ed\u0148 bude vypadat dob\u0159e, bude dlouho slou\u017eit a v p\u0159\u00edpad\u011b pot\u0159eby bude spl\u0148ovat normy EMI.<\/p>\n

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

    Pr\u00e1\u0161kov\u00e9 lakov\u00e1n\u00ed p\u0159id\u00e1v\u00e1 izola\u010dn\u00ed vrstvu a m\u00edrn\u011b sni\u017euje vodivost.<\/p><\/div>
    \n

    <\/svg> Tvrd\u00fd elox poskytuje lep\u0161\u00ed odolnost proti opot\u0159eben\u00ed ne\u017e standardn\u00ed elox.<\/b>Pravda<\/span><\/p>

    eloxov\u00e1n\u00ed typu III vytv\u00e1\u0159\u00ed siln\u011bj\u0161\u00ed a tvrd\u0161\u00ed vrstvu oxidu vhodnou pro abrazivn\u00ed opot\u0159eben\u00ed.<\/p><\/div><\/p>\n

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

    V\u011bnovali jsme se kl\u00ed\u010dov\u00fdm rozm\u011br\u016fm sk\u0159\u00edn\u00ed, n\u00e1stroj\u016fm, tepeln\u00e9mu designu a mo\u017enostem povrchov\u00e9 \u00fapravy. Nyn\u00ed m\u016f\u017eete navrhovat a vyr\u00e1b\u011bt kryty, kter\u00e9 dob\u0159e chr\u00e1n\u00ed desky plo\u0161n\u00fdch spoj\u016f.<\/p>\n

    Pokud chcete pomoci s CNC obr\u00e1b\u011bn\u00edm, tepeln\u00fdm rozlo\u017een\u00edm nebo povrchovou \u00fapravou, mohu v\u00e1s prov\u00e9st ka\u017ed\u00fdm krokem.<\/p>","protected":false},"excerpt":{"rendered":"

    Extruded aluminum enclosure ideal for PCB housing I know finding a clear guide to make an aluminum PCB enclosure is hard. You need a step-by-step walkthrough. You can learn how to pick dimensions, use tools, manage heat, and finish the enclosure clearly. Let me lead you from concept to finished product. What dimensions are essential […]<\/p>\n","protected":false},"author":6,"featured_media":8113,"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-9388","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\/9388","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=9388"}],"version-history":[{"count":0,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/posts\/9388\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/media\/8113"}],"wp:attachment":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/media?parent=9388"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/categories?post=9388"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/tags?post=9388"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}