{"id":1795,"date":"2025-08-12T19:23:21","date_gmt":"2025-08-12T19:23:21","guid":{"rendered":"https:\/\/www.diecastingschina.com\/?p=1795"},"modified":"2025-08-12T19:23:23","modified_gmt":"2025-08-12T19:23:23","slug":"zinkovani-vs-niklovani","status":"publish","type":"post","link":"https:\/\/www.diecastingschina.com\/cs\/zinkovani-vs-niklovani\/","title":{"rendered":"Zinkov\u00e1n\u00ed vs. niklov\u00e1n\u00ed - komplexn\u00ed srovn\u00e1n\u00ed"},"content":{"rendered":"
\"\"\/<\/figure>\n\n\n\n

Pokovov\u00e1n\u00ed je nejuniverz\u00e1ln\u011bj\u0161\u00ed a nejcenn\u011bj\u0161\u00ed ze v\u0161ech proces\u016f povrchov\u00e9 \u00fapravy ve v\u00fdrob\u011b a m\u00e1 mnoho v\u00fdhod, kter\u00e9 zdaleka p\u0159esahuj\u00ed pouhou estetiku. Nanesen\u00edm tenk\u00e9 vrstvy kovov\u00e9ho materi\u00e1lu na z\u00e1kladn\u00ed materi\u00e1l, obvykle ocel, m\u011b\u010f nebo hlin\u00edk, mohou v\u00fdrobci: zv\u00fd\u0161it odolnost proti korozi, pos\u00edlit odolnost proti opot\u0159eben\u00ed, zlep\u0161it elektrickou vodivost nebo dos\u00e1hnout ur\u010dit\u00e9ho dekorativn\u00edho efektu. Vedle \u0161irok\u00e9 \u0161k\u00e1ly dostupn\u00fdch pokovovac\u00edch kov\u016f lze vyzdvihnout takov\u00e9 popul\u00e1rn\u00ed typy, jako je zinek a nikl, kter\u00e9 nach\u00e1zej\u00ed nej\u010dast\u011bj\u0161\u00ed uplatn\u011bn\u00ed v pr\u016fmyslu, komer\u010dn\u00ed sf\u00e9\u0159e a dom\u00e1cnostech.<\/p>\n\n\n\n

Zinkov\u00e1n\u00ed je pova\u017eov\u00e1no za jeden z nej\u00fasporn\u011bj\u0161\u00edch a nejdokonalej\u0161\u00edch ob\u011btn\u00edch syst\u00e9m\u016f ochrany proti korozi, a proto je nejvhodn\u011bj\u0161\u00ed pro ochranu oceli pou\u017e\u00edvan\u00e9 v automobilov\u00e9m pr\u016fmyslu, ve stavebnictv\u00ed a tak\u00e9 v \u017eelez\u00e1\u0159stv\u00ed. Obvykle se vol\u00ed v situaci, kdy jsou hlavn\u00edmi prioritami cenov\u00e1 dostupnost a jednoduch\u00e1 bezpe\u010dnost pro \u017eivotn\u00ed prost\u0159ed\u00ed. Niklov\u00e1n\u00ed je v\u0161ak tak\u00e9 cen\u011bno pro svou dobrou tvrdost, odolnost proti opot\u0159eben\u00ed a schopnost dod\u00e1vat leskl\u00fd dekorativn\u00ed povrch a je tak\u00e9 v\u00fdjime\u010dn\u00e9 svou odolnost\u00ed proti korozi - zejm\u00e9na v drsn\u00fdch nebo mo\u0159sk\u00fdch podm\u00ednk\u00e1ch.<\/p>\n\n\n\n

P\u0159\u00edm\u00e1 volba mezi zinkov\u00e1n\u00edm a niklov\u00e1n\u00edm nemus\u00ed b\u00fdt snadn\u00e1. V\u0161echny maj\u00ed r\u016fzn\u00e9 v\u00fdhody a nev\u00fdhody a z\u00e1vis\u00ed na ot\u00e1zk\u00e1ch t\u00fdkaj\u00edc\u00edch se \u017eivotn\u00edho prost\u0159ed\u00ed, mechanick\u00fdch po\u017eadavk\u016f, elektrick\u00fdch po\u017eadavk\u016f a n\u00e1klad\u016f na celou dobu \u017eivotnosti. Nav\u00edc neust\u00e1le se m\u011bn\u00edc\u00ed p\u0159edpisy o \u017eivotn\u00edm prost\u0159ed\u00ed, pr\u016fmyslov\u00e9 normy a inovace technologi\u00ed pokovov\u00e1n\u00ed, kter\u00e9 zahrnuj\u00ed slitiny zinku a niklu a elektrolytick\u00e9 niklov\u00e9 n\u00e1nosy, m\u011bn\u00ed rozhodovac\u00ed proces.<\/p>\n\n\n\n

Tento \u010dl\u00e1nek se zab\u00fdv\u00e1 srovn\u00e1n\u00edm zinkov\u00e9ho a niklov\u00e9ho pokovov\u00e1n\u00ed, p\u0159i\u010dem\u017e podrobn\u011b popisuje vlastnosti a v\u00fdsledky zinkov\u00e9ho i niklov\u00e9ho pokovov\u00e1n\u00ed, n\u00e1klady a vyu\u017eit\u00ed. D\u00edky takov\u00e9mu srovn\u00e1n\u00ed maj\u00ed konstrukt\u00e9\u0159i, n\u00e1vrh\u00e1\u0159i v\u00fdrobk\u016f a mana\u017ee\u0159i n\u00e1kupu informovan\u00e9 mo\u017enosti volby, pokud se jedn\u00e1 o v\u0161echny tyto aspekty plast\u016f, v\u00fdkonu, estetiky, souladu s \u017eivotn\u00edm prost\u0159ed\u00edm a rozpo\u010dtu.<\/p>\n\n\n\n

2. Z\u00e1klady pokovov\u00e1n\u00ed<\/strong><\/h2>\n\n\n\n
\"\"\/<\/figure>\n\n\n\n

V dne\u0161n\u00ed v\u00fdrob\u011b a produktov\u00e9m in\u017een\u00fdrstv\u00ed je pokovov\u00e1n\u00ed velmi d\u016fle\u017eit\u00e9. Pokovov\u00e1n\u00ed umo\u017e\u0148uje upravit vlastnosti povrchu sou\u010d\u00e1sti (m\u016f\u017ee j\u00edt o odolnost proti korozi, tvrdost, vodivost nebo vzhled); je tedy mo\u017en\u00e9 upravit vlastnosti povrchu, ani\u017e by se m\u011bnil z\u00e1kladn\u00ed materi\u00e1l, kter\u00fd je jeho sou\u010d\u00e1st\u00ed. To vede ke kombinac\u00edm sest\u00e1vaj\u00edc\u00edm z mechanick\u00e9 pevnosti a hospod\u00e1rnosti z\u00e1kladn\u00edho kovu spolu s funk\u010dnost\u00ed povlaku.<\/p>\n\n\n\n

Co je galvanick\u00e9 pokovov\u00e1n\u00ed?<\/strong><\/h3>\n\n\n\n

Galvanick\u00e9 pokovov\u00e1n\u00ed je \u0159\u00edzen\u00fd elektrochemick\u00fd proces, p\u0159i kter\u00e9m se na povrch jin\u00e9ho vodiv\u00e9ho materi\u00e1lu nan\u00e1\u0161\u00ed tenk\u00e1 vrstva jednoho kovu pomoc\u00ed stejnosm\u011brn\u00e9ho proudu. V pokovovac\u00edm syst\u00e9mu slou\u017e\u00ed pokovovan\u00e1 sou\u010d\u00e1st (obrobek) jako katoda, zat\u00edmco pokovovac\u00ed kov bu\u010f tvo\u0159\u00ed anodu - postupn\u011b se rozpou\u0161t\u00ed v elektrolytu - nebo je dod\u00e1v\u00e1n v iontov\u00e9 form\u011b z roztoku pokovovac\u00ed l\u00e1zn\u011b.<\/p>\n\n\n\n

Elektrolytov\u00e1 l\u00e1ze\u0148 obsahuje soli kov\u016f, pufry a dal\u0161\u00ed p\u0159\u00edsady, kter\u00e9 ovliv\u0148uj\u00ed rychlost nan\u00e1\u0161en\u00ed, strukturu zrn, jas a p\u0159ilnavost povlaku. Volba chemick\u00e9ho slo\u017een\u00ed l\u00e1zn\u011b z\u00e1vis\u00ed na pokovovan\u00e9m kovu a po\u017eadovan\u00fdch vlastnostech povlaku.<\/p>\n\n\n\n

Z\u00e1kladn\u00ed kroky procesu:<\/strong><\/p>\n\n\n\n

    \n
  1. P\u0159\u00edprava povrchu<\/strong> - Obrobek se d\u016fkladn\u011b o\u010dist\u00ed, aby se zajistila spr\u00e1vn\u00e1 p\u0159ilnavost. To zahrnuje odma\u0161t\u011bn\u00ed (odstran\u011bn\u00ed olej\u016f), mechanick\u00e9 \u010di\u0161t\u011bn\u00ed (otrysk\u00e1n\u00ed nebo kart\u00e1\u010dov\u00e1n\u00ed) a chemick\u00e9 \u010di\u0161t\u011bn\u00ed (mo\u0159en\u00ed kyselinou) k odstran\u011bn\u00ed oxid\u016f nebo rzi. Dokonce i mikroskopick\u00e9 ne\u010distoty mohou zabr\u00e1nit rovnom\u011brn\u00e9mu povlaku.<\/li>\n\n\n\n
  2. Elektrolytick\u00e9 nan\u00e1\u0161en\u00ed<\/strong> - Po p\u0159\u00edprav\u011b se d\u00edl pono\u0159\u00ed do pokovovac\u00ed l\u00e1zn\u011b. \u0158\u00edzen\u00fd stejnosm\u011brn\u00fd proud zp\u016fsobuje, \u017ee kladn\u011b nabit\u00e9 ionty kovu v roztoku migruj\u00ed sm\u011brem ke katod\u011b (obrobku) a usazuj\u00ed se jako kovov\u00e1 vrstva. Parametry, jako je hustota proudu, teplota, pH a m\u00edch\u00e1n\u00ed, jsou pe\u010dliv\u011b sledov\u00e1ny, aby bylo dosa\u017eeno konzistentn\u00ed tlou\u0161\u0165ky a kvality povrchu.<\/li>\n\n\n\n
  3. Po l\u00e9\u010db\u011b<\/strong> - Po nanesen\u00ed se d\u00edl opl\u00e1chne, aby se odstranily zbytky chemik\u00e1li\u00ed, a pot\u00e9 se podrob\u00ed voliteln\u00fdm \u00faprav\u00e1m, jako je chrom\u00e1tov\u00e1 pasivace (pro zv\u00fd\u0161en\u00ed odolnosti proti korozi), tepeln\u00e9 zpracov\u00e1n\u00ed (pro zv\u00fd\u0161en\u00ed tvrdosti nebo p\u0159ilnavosti) nebo le\u0161t\u011bn\u00ed (pro dekorativn\u00ed aplikace).<\/li>\n<\/ol>\n\n\n\n

    Pro\u010d plechy?<\/strong><\/h3>\n\n\n\n

    Kovov\u00e9 povlaky se pou\u017e\u00edvaj\u00ed pro r\u016fzn\u00e9 funk\u010dn\u00ed a estetick\u00e9 \u00fa\u010dely a \u010dasto kombinuj\u00ed n\u011bkolik v\u00fdhod v jednom povlaku:<\/p>\n\n\n\n

      \n
    • Ochrana proti korozi<\/strong> - Zabra\u0148uje oxidaci a korozi nebo je oddaluje, \u010d\u00edm\u017e prodlu\u017euje \u017eivotnost sou\u010d\u00e1st\u00ed, zejm\u00e9na v agresivn\u00edm prost\u0159ed\u00ed. P\u0159\u00edkladem je ob\u011btn\u00ed ochrana zinku a bari\u00e9rov\u00e1 ochrana niklu.<\/li>\n\n\n\n
    • Odolnost proti opot\u0159eben\u00ed<\/strong> - Tvrd\u0161\u00ed pokovovac\u00ed materi\u00e1ly, jako je nikl nebo chrom, chr\u00e1n\u00ed p\u0159ed ot\u011brem, zad\u0159en\u00edm a \u00fanavou povrchu.<\/li>\n\n\n\n
    • \u0158\u00edzen\u00ed elektrick\u00e9 vodivosti<\/strong> - N\u011bkter\u00e9 pokoven\u00ed zvy\u0161uj\u00ed vodivost (nap\u0159. st\u0159\u00edbro, zlato), zat\u00edmco jin\u00e9 zaji\u0161\u0165uj\u00ed \u0159\u00edzen\u00fd odpor nebo elektromagnetick\u00e9 st\u00edn\u011bn\u00ed.<\/li>\n\n\n\n
    • Dekorativn\u00ed p\u0159ita\u017elivost<\/strong> - Dosahuje sv\u011btl\u00e9ho, reflexn\u00edho nebo barevn\u00e9ho povrchu, \u010d\u00edm\u017e zlep\u0161uje estetiku spot\u0159ebitelsk\u00fdch v\u00fdrobk\u016f.<\/li>\n\n\n\n
    • Mazivost a kontrola t\u0159en\u00ed<\/strong> - N\u011bkter\u00e9 povlaky, jako nap\u0159\u00edklad nikl s PTFE, sni\u017euj\u00ed t\u0159en\u00ed a zlep\u0161uj\u00ed v\u00fdkonnost d\u00edl\u016f v pohybliv\u00fdch sestav\u00e1ch.<\/li>\n<\/ul>\n\n\n\n

      Strategick\u00fdm v\u00fdb\u011brem pokovovac\u00edho kovu, typu procesu a tlou\u0161\u0165ky mohou v\u00fdrobci navrhnout povrchy, kter\u00e9 vyv\u00e1\u017e\u00ed n\u00e1klady, trvanlivost a v\u00fdkon pro zam\u00fd\u0161lenou aplikaci.<\/p>\n\n\n\n

      3. Zinkov\u00e1n\u00ed<\/strong><\/h2>\n\n\n\n
      \"\"\/<\/figure>\n\n\n\n

      Zinkov\u00e1n\u00ed je \u0161iroce pou\u017e\u00edvan\u00fd proces povrchov\u00e9 \u00fapravy, p\u0159i kter\u00e9m se na kovov\u00fd podklad - obvykle na ocel, \u017eelezo nebo mosaz - nan\u00e1\u0161\u00ed vrstva zinku, kter\u00e1 poskytuje ob\u011btn\u00ed ochranu proti korozi. P\u0159i tomto mechanismu zinek funguje jako galvanick\u00e1 anoda, co\u017e znamen\u00e1, \u017ee p\u0159i vystaven\u00ed vlhkosti nebo kysl\u00edku koroduje p\u0159ednostn\u011b p\u0159ed z\u00e1kladn\u00edm kovem. Toto elektrochemick\u00e9 chov\u00e1n\u00ed v\u00fdrazn\u011b prodlu\u017euje \u017eivotnost sou\u010d\u00e1st\u00ed, zejm\u00e9na v prost\u0159ed\u00ed, kde je hlavn\u00ed hrozbou atmosf\u00e9rick\u00e1 koroze.<\/p>\n\n\n\n

      Zinkov\u00e9 povlaky tak\u00e9 zlep\u0161uj\u00ed vzhled d\u00edl\u016f a nab\u00edzej\u00ed jasn\u011b st\u0159\u00edb\u0159it\u011b b\u00edl\u00fd povrch, kter\u00fd lze d\u00e1le upravit chrom\u00e1tovou pasivac\u00ed pro dosa\u017een\u00ed \u017elut\u00fdch, \u010dern\u00fdch nebo olivov\u00fdch odst\u00edn\u016f. Tento proces je v\u0161estrann\u00fd, n\u00e1kladov\u011b efektivn\u00ed a kompatibiln\u00ed jak s velk\u00fdmi konstruk\u010dn\u00edmi d\u00edly, tak se slo\u017eit\u00fdm drobn\u00fdm hardwarem.<\/p>\n\n\n\n

      Typy zinkov\u00e1n\u00ed<\/strong><\/h3>\n\n\n\n
        \n
      • Galvanick\u00e9 zinkov\u00e1n\u00ed<\/strong> - Elektrolytick\u00fd proces, p\u0159i kter\u00e9m se nan\u00e1\u0161\u00ed tenk\u00e1, rovnom\u011brn\u00e1 vrstva zinku, \u010dasto pou\u017e\u00edvan\u00fd pro automobilov\u00e9 panely a p\u0159esn\u00e9 d\u00edly, kde jsou kritick\u00e9 rozm\u011brov\u00e9 tolerance.<\/li>\n\n\n\n
      • \u017d\u00e1rov\u00e9 zinkov\u00e1n\u00ed<\/strong> - Pono\u0159en\u00edm oceli do roztaven\u00e9ho zinku vznik\u00e1 siln\u00fd, metalurgicky spojen\u00fd povlak, kter\u00fd je ide\u00e1ln\u00ed pro venkovn\u00ed konstruk\u010dn\u00ed ocel a ochranu proti korozi v t\u011b\u017ek\u00fdch podm\u00ednk\u00e1ch.<\/li>\n\n\n\n
      • Mechanick\u00e9 pokovov\u00e1n\u00ed<\/strong> - Spojuje pr\u00e1\u0161kov\u00fd zinek s d\u00edly mechanick\u00fdm bubnov\u00e1n\u00edm a n\u00e1razem, \u010d\u00edm\u017e zabra\u0148uje vod\u00edkov\u00e9 k\u0159ehkosti a je vhodn\u00fd pro vysokopevnostn\u00ed spojovac\u00ed prvky.<\/li>\n\n\n\n
      • Pokovov\u00e1n\u00ed zinkovou slitinou<\/strong> - Zahrnuje povlaky zinek-nikl, zinek-kobalt a zinek-\u017eelezo, kter\u00e9 poskytuj\u00ed zv\u00fd\u0161enou odolnost proti korozi, lep\u0161\u00ed tvrdost a lep\u0161\u00ed tepelnou stabilitu ve srovn\u00e1n\u00ed s \u010dist\u00fdm zinkem.<\/li>\n<\/ul>\n\n\n\n

        Shrnut\u00ed procesu<\/strong><\/h3>\n\n\n\n
          \n
        1. Odma\u0161\u0165ov\u00e1n\u00ed a mo\u0159en\u00ed<\/strong> - Odstra\u0148uje oleje, ne\u010distoty, oxidy a vodn\u00ed k\u00e1men a p\u0159ipravuje povrch.<\/li>\n\n\n\n
        2. Elektrolytick\u00e9 nan\u00e1\u0161en\u00ed<\/strong> - D\u00edl se pono\u0159\u00ed do galvanick\u00e9 l\u00e1zn\u011b obsahuj\u00edc\u00ed zine\u010dnat\u00e9 soli, kter\u00e9 mohou b\u00fdt na b\u00e1zi kyanidu<\/strong>, alkalick\u00e9 nekyanidov\u00e9<\/strong>, nebo chlorid kyseliny<\/strong> formulace, z nich\u017e ka\u017ed\u00e1 nab\u00edz\u00ed r\u016fzn\u00e9 rychlosti nan\u00e1\u0161en\u00ed a vlastnosti povlaku.<\/li>\n\n\n\n
        3. Pasivace po pokoven\u00ed<\/strong> - Chrom\u00e1tov\u00e9 konverzn\u00ed povlaky se pou\u017e\u00edvaj\u00ed k ut\u011bsn\u011bn\u00ed p\u00f3r\u016f, zv\u00fd\u0161en\u00ed odolnosti proti korozi a k barevn\u00e9mu proveden\u00ed. V modern\u00edch procesech se \u010dasto pou\u017e\u00edv\u00e1 trojmocn\u00fd chrom, aby byly spln\u011bny p\u0159edpisy RoHS a REACH.<\/li>\n<\/ol>\n\n\n\n

          Vlastnosti<\/strong><\/h3>\n\n\n\n
            \n
          • Odolnost proti korozi<\/strong> - Vynikaj\u00edc\u00ed v atmosf\u00e9rick\u00fdch podm\u00ednk\u00e1ch; ob\u011btav\u00fd \u00fa\u010dinek chr\u00e1n\u00ed obna\u017eenou ocel i v p\u0159\u00edpad\u011b po\u0161kr\u00e1b\u00e1n\u00ed povlaku.<\/li>\n\n\n\n
          • Ta\u017enost<\/strong> - M\u00edrn\u00e1; p\u0159i spr\u00e1vn\u00e9m pou\u017eit\u00ed odol\u00e1v\u00e1 oh\u00fdb\u00e1n\u00ed a tvarov\u00e1n\u00ed bez prask\u00e1n\u00ed.<\/li>\n\n\n\n
          • Elektrick\u00e1 vodivost<\/strong> - Ni\u017e\u0161\u00ed ne\u017e u niklu, ale pro uzemn\u011bn\u00ed a st\u00edn\u011bn\u00ed dosta\u010duj\u00edc\u00ed.<\/li>\n\n\n\n
          • Vzhled<\/strong> - P\u0159irozen\u011b z\u00e1\u0159iv\u011b st\u0159\u00edb\u0159it\u011b b\u00edl\u00e9; pasivac\u00ed lze upravit do \u017elut\u00e9, \u010dern\u00e9, olivov\u00e9 nebo \u010dir\u00e9 barvy.<\/li>\n<\/ul>\n\n\n\n

            V\u00fdhody<\/strong><\/h3>\n\n\n\n
              \n
            • Cenov\u011b v\u00fdhodn\u00e9 \u0159e\u0161en\u00ed ochrany proti korozi.<\/li>\n\n\n\n
            • Na rozd\u00edl od \u010dist\u011b bari\u00e9rov\u00fdch n\u00e1t\u011br\u016f poskytuje ob\u011btovanou ochranu.<\/li>\n\n\n\n
            • Tlou\u0161\u0165ku n\u00e1t\u011bru lze p\u0159izp\u016fsobit pot\u0159eb\u00e1m aplikace.<\/li>\n\n\n\n
            • Vhodn\u00e9 pro mal\u00e9, slo\u017eit\u00e9 geometrie.<\/li>\n<\/ul>\n\n\n\n

              Nev\u00fdhody<\/strong><\/h3>\n\n\n\n
                \n
              • Ni\u017e\u0161\u00ed odolnost proti opot\u0159eben\u00ed ve srovn\u00e1n\u00ed s niklem a tvrd\u0161\u00edmi povlaky.<\/li>\n\n\n\n
              • N\u00edzk\u00fd bod t\u00e1n\u00ed (~420 \u00b0C), co\u017e jej \u010din\u00ed nevhodn\u00fdm pro prost\u0159ed\u00ed s vysok\u00fdmi teplotami.<\/li>\n\n\n\n
              • Tenk\u00e9 n\u00e1t\u011bry mohou v abrazivn\u00edm nebo mo\u0159sk\u00e9m prost\u0159ed\u00ed rychle degradovat.<\/li>\n<\/ul>\n\n\n\n

                B\u011b\u017en\u00e9 aplikace<\/strong><\/h3>\n\n\n\n
                  \n
                • Automobilov\u00fd pr\u016fmysl<\/strong> - Spojovac\u00ed prvky, dr\u017e\u00e1ky a sou\u010d\u00e1sti podvozku.<\/li>\n\n\n\n
                • Elektrick\u00fd hardware<\/strong> - Armatury pro veden\u00ed, uzem\u0148ovac\u00ed d\u00edly.<\/li>\n\n\n\n
                • Stavebnictv\u00ed<\/strong> - Konstruk\u010dn\u00ed nosn\u00edky, st\u0159e\u0161n\u00ed kov\u00e1n\u00ed a r\u00e1mov\u00e9 spojky.<\/li>\n\n\n\n
                • Obecn\u00fd hardware<\/strong> - Dve\u0159n\u00ed z\u00e1v\u011bsy, kliky a vybaven\u00ed dom\u00e1cnosti.<\/li>\n<\/ul>\n\n\n\n

                  4. Niklov\u00e1n\u00ed<\/strong><\/h2>\n\n\n\n
                  \"\"\/<\/figure>\n\n\n\n

                  Niklov\u00e1n\u00ed je vysoce univerz\u00e1ln\u00ed povrchov\u00e1 \u00faprava pou\u017e\u00edvan\u00e1 pro dekorativn\u00ed i technick\u00e9 \u00fa\u010dely. Ve srovn\u00e1n\u00ed se zinkov\u00e1n\u00edm jsou niklov\u00e9 povlaky tvrd\u0161\u00ed, odoln\u011bj\u0161\u00ed proti opot\u0159eben\u00ed a poskytuj\u00ed vynikaj\u00edc\u00ed odolnost proti korozi v \u0161ir\u0161\u00edm spektru prost\u0159ed\u00ed - v\u010detn\u011b mo\u0159sk\u00fdch, chemick\u00fdch a vysokoteplotn\u00edch podm\u00ednek.<\/p>\n\n\n\n

                  Krom\u011b funk\u010dn\u00ed ochrany poskytuje niklov\u00e1n\u00ed jasn\u00fd, leskl\u00fd povrch, kter\u00fd zlep\u0161uje vzhled v\u00fdrobk\u016f, a je tak obl\u00edbenou volbou pro spot\u0159ebn\u00ed zbo\u017e\u00ed, automobilov\u00e9 oblo\u017een\u00ed a luxusn\u00ed hardware. V z\u00e1vislosti na typu procesu a slo\u017een\u00ed mohou b\u00fdt niklov\u00e9 povlaky konstruov\u00e1ny pro v\u00fdjime\u010dnou tvrdost, ta\u017enost, rovnom\u011brnou tlou\u0161\u0165ku nebo specializovanou chemickou odolnost.<\/p>\n\n\n\n

                  Typy niklov\u00e1n\u00ed<\/strong><\/h3>\n\n\n\n
                    \n
                  • Elektrolytick\u00e9 niklov\u00e1n\u00ed<\/strong> -Ukl\u00e1d\u00e1 nikl pomoc\u00ed elekt\u0159iny k p\u0159enosu niklu do l\u00e1zn\u011b obsahuj\u00edc\u00ed niklov\u00fd elektrolyt. Obvykl\u00e9 varianty jsou:\n
                      \n
                    • Sv\u011btl\u00fd nikl<\/strong>- dod\u00e1v\u00e1 vysoce dokon\u010den\u00fd zrcadlov\u00fd vzhled, pou\u017e\u00edv\u00e1 se v dekorativn\u00edch procesech; b\u011b\u017en\u011b se nadm\u011brn\u011b nan\u00e1\u0161\u00ed p\u0159i chromov\u00e1n\u00ed (automobily, spot\u0159ebi\u010de).<\/li>\n\n\n\n
                    • Matn\u00fd nikl<\/strong> -Odolnost proti korozi a ta\u017enost jsou skv\u011bl\u00e9 a maj\u00ed matn\u00fd povrch; b\u011b\u017en\u011b se pou\u017e\u00edvaj\u00ed jako podkladov\u00fd n\u00e1t\u011br.<\/li>\n\n\n\n
                    • Sulfam\u00e1t niklu N\u00edzk\u00e9 vnit\u0159n\u00ed nap\u011bt\u00ed<\/strong>, vysok\u00e9 \u010distoty, co\u017e umo\u017e\u0148uje p\u011bstovat siln\u00e9 n\u00e1nosy bez k\u0159ehkosti a\u017e do technick\u00e9 kvality.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                    • Elektrolytick\u00e9 niklov\u00e1n\u00ed (ENP)<\/strong> -Aplikujte elektrolytick\u00e9 niklov\u00e1n\u00ed pomoc\u00ed autokatalytick\u00e9ho procesu chemick\u00e9 redukce, kter\u00fd nepot\u0159ebuje elekt\u0159inu. ENP poskytuje konzistenci i u slo\u017eit\u00fdch tvar\u016f, jako jsou vnit\u0159n\u00ed povrchy a p\u0159esn\u00e9 konstruk\u010dn\u00ed sou\u010d\u00e1sti, proto se pou\u017e\u00edv\u00e1 p\u0159edev\u0161\u00edm v t\u011bchto oblastech. Jin\u00e9 varianty poskytuj\u00ed tvrdost a chemickou odolnost na zak\u00e1zku, nap\u0159\u00edklad slitiny niklu s fosforem a niklu s b\u00f3rem.<\/li>\n<\/ul>\n\n\n\n

                      Shrnut\u00ed procesu<\/strong><\/h3>\n\n\n\n
                        \n
                      1. \u010ci\u0161t\u011bn\u00ed a aktivace<\/strong> - Odstra\u0148uje v\u0161echny oleje, oxidy a povrchov\u00e9 ne\u010distoty a zaji\u0161\u0165uje tak silnou p\u0159ilnavost.<\/li>\n\n\n\n
                      2. V\u00fdpov\u011b\u010f<\/strong> - Bu\u010f elektrolytick\u00e9<\/strong> (\u0159\u00edzen\u00e9 proudem) nebo autokatalytick\u00e9 (chemick\u00e9) pokovov\u00e1n\u00ed v z\u00e1vislosti na po\u017eadovan\u00fdch vlastnostech povlaku.<\/li>\n\n\n\n
                      3. Oplachov\u00e1n\u00ed a su\u0161en\u00ed<\/strong> - Eliminuje zbytky l\u00e1zn\u011b, aby nedo\u0161lo ke kontaminaci nebo pot\u0159\u00edsn\u011bn\u00ed.<\/li>\n\n\n\n
                      4. Voliteln\u00e9 tepeln\u00e9 zpracov\u00e1n\u00ed<\/strong> - Pou\u017e\u00edv\u00e1 se ke zpevn\u011bn\u00ed povlaku, zv\u00fd\u0161en\u00ed odolnosti proti opot\u0159eben\u00ed nebo zlep\u0161en\u00ed p\u0159ilnavosti k podkladu.<\/li>\n<\/ol>\n\n\n\n

                        Vlastnosti<\/strong><\/h3>\n\n\n\n
                          \n
                        • Tvrdost<\/strong> - Vysok\u00fd ve form\u011b po nanesen\u00ed; lze d\u00e1le zv\u00fd\u0161it tepeln\u00fdm zpracov\u00e1n\u00edm (a\u017e ~1000 HV u n\u011bkter\u00fdch slitin ENP).<\/li>\n\n\n\n
                        • Odolnost proti opot\u0159eben\u00ed<\/strong> - Vynikaj\u00edc\u00ed pro pohybliv\u00e9 sou\u010d\u00e1sti a povrchy s vysok\u00fdm t\u0159en\u00edm.<\/li>\n\n\n\n
                        • Odolnost proti korozi<\/strong> - Velmi vysok\u00e1, zejm\u00e9na u ENP s vysok\u00fdm obsahem fosforu, kter\u00fd odol\u00e1v\u00e1 kyselin\u00e1m, sol\u00edm a z\u00e1sadit\u00e9mu prost\u0159ed\u00ed.<\/li>\n\n\n\n
                        • Vzhled<\/strong> - P\u0159irozen\u011b leskl\u00fd, st\u0159\u00edb\u0159it\u011b b\u00edl\u00fd a vysoce reflexn\u00ed, co\u017e mu dod\u00e1v\u00e1 prvot\u0159\u00eddn\u00ed vizu\u00e1ln\u00ed p\u0159ita\u017elivost.<\/li>\n<\/ul>\n\n\n\n

                          V\u00fdhody<\/strong><\/h3>\n\n\n\n
                            \n
                          • V\u00fdjime\u010dn\u00e1 odolnost proti opot\u0159eben\u00ed a od\u011bru.<\/li>\n\n\n\n
                          • Vhodn\u00e9 pro funk\u010dn\u00ed technick\u00e9 i dekorativn\u00ed aplikace.<\/li>\n\n\n\n
                          • Lze aplikovat na nevodiv\u00e9 podklady (plasty, keramika) po p\u0159edb\u011b\u017en\u00e9 metaliza\u010dn\u00ed \u00faprav\u011b.<\/li>\n\n\n\n
                          • Bezelektrick\u00fd nikl zaji\u0161\u0165uje st\u00e1lou tlou\u0161\u0165ku i na z\u00e1vitech, prohlubn\u00edch a vnit\u0159n\u00edch ploch\u00e1ch.<\/li>\n<\/ul>\n\n\n\n

                            Nev\u00fdhody<\/strong><\/h3>\n\n\n\n
                              \n
                            • Vy\u0161\u0161\u00ed n\u00e1klady ve srovn\u00e1n\u00ed s pozinkov\u00e1n\u00edm.<\/li>\n\n\n\n
                            • Slo\u017eit\u011bj\u0161\u00ed \u010di\u0161t\u011bn\u00ed odpadn\u00edch vod kv\u016fli sol\u00edm niklu a procesn\u00edm chemik\u00e1li\u00edm.<\/li>\n\n\n\n
                            • N\u011bkter\u00e1 lo\u017eiska niklu mohou b\u00fdt k\u0159ehk\u00e1, pokud nejsou optimalizov\u00e1ny parametry procesu.<\/li>\n<\/ul>\n\n\n\n

                              B\u011b\u017en\u00e9 aplikace<\/strong><\/h3>\n\n\n\n
                                \n
                              • Automobilov\u00fd pr\u016fmysl<\/strong> - Ozdobn\u00e9 li\u0161ty, m\u0159\u00ed\u017eky, n\u00e1razn\u00edky a sou\u010d\u00e1sti pod kapotou vy\u017eaduj\u00edc\u00ed odolnost proti opot\u0159eben\u00ed.<\/li>\n\n\n\n
                              • Letectv\u00ed a kosmonautika<\/strong> - \u010c\u00e1sti palivov\u00e9ho syst\u00e9mu, sou\u010d\u00e1sti podvozku a hardware motoru vystaven\u00e9 vysok\u00fdm teplot\u00e1m a korozi.<\/li>\n\n\n\n
                              • N\u00e1stroje a v\u00fdroba<\/strong> - Formy, z\u00e1pustky a \u0159ezn\u00e9 n\u00e1stroje vy\u017eaduj\u00edc\u00ed tvrd\u00e9 povrchy odoln\u00e9 proti opot\u0159eben\u00ed.<\/li>\n\n\n\n
                              • Elektronika<\/strong> - Konektory, kontakty a sou\u010d\u00e1sti elektromagnetick\u00e9ho st\u00edn\u011bn\u00ed.<\/li>\n<\/ul>\n\n\n\n

                                5. Zinek vs. nikl - podrobn\u00e9 srovn\u00e1n\u00ed<\/strong><\/h2>\n\n\n\n

                                Tabulka 1 Srovn\u00e1n\u00ed zinku a niklu<\/em><\/p>\n\n\n\n

                                Parametr<\/strong><\/td>Pozinkov\u00e1n\u00ed<\/strong><\/td>Niklov\u00e1n\u00ed<\/strong><\/td><\/tr>
                                Prim\u00e1rn\u00ed \u00fa\u010del<\/strong><\/td>Ob\u011btn\u00ed ochrana proti korozi<\/td>Opot\u0159eben\u00ed, koroze a dekorativn\u00ed povrchov\u00e1 \u00faprava<\/td><\/tr>
                                Odolnost proti korozi<\/strong><\/td>Vysok\u00fd v atmosf\u00e9rick\u00fdch podm\u00ednk\u00e1ch; slab\u0161\u00ed v mo\u0159sk\u00e9m prost\u0159ed\u00ed<\/td>Vynikaj\u00edc\u00ed ve v\u011bt\u0161in\u011b podm\u00ednek, v\u010detn\u011b mo\u0159sk\u00fdch (ENP)<\/td><\/tr>
                                Odolnost proti opot\u0159eben\u00ed<\/strong><\/td>M\u00edrn\u00e1<\/td>Velmi vysok\u00e1<\/td><\/tr>
                                N\u00e1klady<\/strong><\/td>N\u00edzk\u00e1<\/td>St\u0159edn\u00ed a\u017e vysok\u00e1<\/td><\/tr>
                                Vzhled<\/strong><\/td>St\u0159\u00edbrn\u00e1, lze pasivovat do barev<\/td>Z\u00e1\u0159iv\u00e9 st\u0159\u00edbro, vysok\u00fd lesk<\/td><\/tr>
                                Elektrick\u00e1 vodivost<\/strong><\/td>Doln\u00ed<\/td>Vy\u0161\u0161\u00ed<\/td><\/tr>
                                Tepeln\u00e1 odolnost<\/strong><\/td>Omezen\u00e9<\/td>Lep\u0161\u00ed, zejm\u00e9na s ENP<\/td><\/tr>
                                Rozsah tlou\u0161\u0165ky<\/strong><\/td>5-25 \u03bcm typicky<\/td>2-50 \u03bcm v z\u00e1vislosti na pou\u017eit\u00ed<\/td><\/tr>
                                Dopad na \u017eivotn\u00ed prost\u0159ed\u00ed<\/strong><\/td>Ni\u017e\u0161\u00ed, pokud je pasivov\u00e1n bez \u0161estimocn\u00e9ho chromu<\/td>Vy\u0161\u0161\u00ed zat\u00ed\u017een\u00ed \u010dist\u00edrny odpadn\u00edch vod<\/td><\/tr>
                                Nejlep\u0161\u00ed p\u0159\u00edpady pou\u017eit\u00ed<\/strong><\/td>Spojovac\u00ed prvky, dr\u017e\u00e1ky, d\u00edly s n\u00edzk\u00fdm a\u017e st\u0159edn\u00edm nam\u00e1h\u00e1n\u00edm<\/td>Vysoce opot\u0159ebiteln\u00e9, dekorativn\u00ed, p\u0159esn\u00e9 stroj\u00edrensk\u00e9 d\u00edly<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

                                6. V\u00fdkonnost specifick\u00e1 pro dan\u00e9 odv\u011btv\u00ed<\/strong><\/h2>\n\n\n\n
                                \"\"\/<\/figure>\n\n\n\n

                                R\u016fzn\u00e1 pr\u016fmyslov\u00e1 odv\u011btv\u00ed kladou na pokoven\u00e9 sou\u010d\u00e1sti jedine\u010dn\u00e9 mechanick\u00e9, environment\u00e1ln\u00ed a regula\u010dn\u00ed po\u017eadavky. Volba mezi zinkov\u00e1n\u00edm a niklov\u00e1n\u00edm \u010dasto z\u00e1vis\u00ed na faktorech, jako je provozn\u00ed prost\u0159ed\u00ed, funkce sou\u010d\u00e1sti a kompromisy mezi n\u00e1klady a v\u00fdkonem. N\u00ed\u017ee je uvedeno srovn\u00e1n\u00ed podle jednotliv\u00fdch odv\u011btv\u00ed.<\/p>\n\n\n\n

                                Automobilov\u00fd pr\u016fmysl<\/strong><\/h3>\n\n\n\n
                                  \n
                                • Pozinkov\u00e1n\u00ed<\/strong> - \u0160irok\u00e9 pou\u017eit\u00ed pro \u0161rouby, matice, dr\u017e\u00e1ky, svorky a sou\u010d\u00e1sti podvozku. D\u00edky sv\u00e9 ob\u011btav\u00e9 ochran\u011b proti korozi a n\u00edzk\u00fdm n\u00e1klad\u016fm je ide\u00e1ln\u00ed pro velkos\u00e9riovou v\u00fdrobu automobil\u016f. Chrom\u00e1tov\u00e1 pasivace zvy\u0161uje odolnost v\u016f\u010di sol\u00edm a vlhkosti. U vysoce v\u00fdkonn\u00fdch vozidel nebo p\u0159i del\u0161\u00edch z\u00e1ruk\u00e1ch se pro upev\u0148ovac\u00ed prvky podvozku st\u00e1le \u010dast\u011bji pou\u017e\u00edvaj\u00ed slitiny zinku a niklu, a to d\u00edky jejich lep\u0161\u00ed korozn\u00ed \u017eivotnosti p\u0159i zkou\u0161k\u00e1ch solnou mlhou (v\u00edce ne\u017e 1 000 hodin).<\/li>\n\n\n\n
                                • Niklov\u00e1n\u00ed<\/strong> - B\u011b\u017en\u011b se pou\u017e\u00edv\u00e1 v ozdobn\u00fdch li\u0161t\u00e1ch, bo\u010dn\u00edch zrc\u00e1tk\u00e1ch, m\u0159\u00ed\u017ek\u00e1ch a interi\u00e9rov\u00e9m kov\u00e1n\u00ed, kde je po\u017eadov\u00e1na leskl\u00e1, prvot\u0159\u00eddn\u00ed povrchov\u00e1 \u00faprava. D\u00edky tvrdosti a odolnosti proti opot\u0159eben\u00ed je nikl ide\u00e1ln\u00ed pro pohybliv\u00e9 d\u00edly, jako jsou sou\u010d\u00e1sti \u0159adic\u00ed p\u00e1ky, mechanismy nastaven\u00ed sedadel a ozdobn\u00e9 r\u00e1me\u010dky, se kter\u00fdmi se \u010dasto manipuluje. \u010casto se vrstv\u00ed pod fin\u00e1ln\u00ed chromovou povrchovou \u00fapravu, aby se dos\u00e1hlo odolnosti a lesku.<\/li>\n<\/ul>\n\n\n\n

                                  N\u00e1mo\u0159n\u00ed a ropn\u00e9\/plyn\u00e1rensk\u00e9 spole\u010dnosti<\/strong><\/h3>\n\n\n\n
                                    \n
                                  • Pozinkov\u00e1n\u00ed<\/strong> - Omezen\u00e9 pou\u017eit\u00ed v drsn\u00e9m mo\u0159sk\u00e9m nebo pob\u0159e\u017en\u00edm prost\u0159ed\u00ed z d\u016fvodu rychl\u00e9ho vy\u010derp\u00e1n\u00ed ob\u011btovan\u00e9ho materi\u00e1lu. P\u0159ijateln\u00e9 pouze p\u0159i aplikaci ve velmi siln\u00fdch vrstv\u00e1ch nebo jako pokoven\u00ed slitinou zinku a niklu, kter\u00e9 v\u00fdrazn\u011b zpomaluje korozi v podm\u00ednk\u00e1ch slan\u00e9 vody. Nejvhodn\u011bj\u0161\u00ed pro sou\u010d\u00e1sti s n\u00edzkou kriti\u010dnost\u00ed.<\/li>\n\n\n\n
                                  • Niklov\u00e1n\u00ed<\/strong> - Zejm\u00e9na elektrolytick\u00e9 niklov\u00e1n\u00ed (ENP) vynik\u00e1 v n\u00e1mo\u0159n\u00edch a ropn\u00fdch\/plynov\u00fdch aplikac\u00edch. Vysoce fosforov\u00fd ENP odol\u00e1v\u00e1 korozi mo\u0159sk\u00e9 vody, biologick\u00e9mu zne\u010di\u0161t\u011bn\u00ed a prost\u0159ed\u00ed s kysel\u00fdm plynem. Pou\u017e\u00edv\u00e1 se ve velk\u00e9 m\u00ed\u0159e pro h\u0159\u00eddele \u010derpadel, sou\u010d\u00e1sti ventil\u016f a vrtn\u00e1 za\u0159\u00edzen\u00ed, kde je kritick\u00e1 odolnost proti korozi i rozm\u011brov\u00e1 p\u0159esnost.<\/li>\n<\/ul>\n\n\n\n

                                    Elektronika<\/strong><\/h3>\n\n\n\n
                                      \n
                                    • Pozinkov\u00e1n\u00ed<\/strong> - Cenov\u011b v\u00fdhodn\u00e9 pro uzemn\u011bn\u00ed podvozku, kabelov\u00e9 svorky a nekritick\u00e9 vodiv\u00e9 \u010d\u00e1sti. Vrstvy oxidu zine\u010dnat\u00e9ho v\u0161ak mohou \u010dasem zv\u00fd\u0161it odpor kontakt\u016f, co\u017e omezuje jejich pou\u017eit\u00ed pro vysoce v\u00fdkonn\u00e9 konektory.<\/li>\n\n\n\n
                                    • Niklov\u00e1n\u00ed<\/strong> - Nab\u00edz\u00ed stabiln\u00ed vodivost, vynikaj\u00edc\u00ed p\u00e1jitelnost a vynikaj\u00edc\u00ed st\u00edn\u011bn\u00ed proti elektromagnetick\u00e9mu ru\u0161en\u00ed (EMI). B\u011b\u017en\u011b se pou\u017e\u00edv\u00e1 v pouzdrech konektor\u016f, okrajov\u00fdch kontaktech desek plo\u0161n\u00fdch spoj\u016f a RF\/mikrovlnn\u00fdch krytech. ENP lze pou\u017e\u00edt i na nevodiv\u00e9 substr\u00e1ty pou\u017e\u00edvan\u00e9 v elektronick\u00fdch pouzdrech.<\/li>\n<\/ul>\n\n\n\n

                                      Letectv\u00ed a kosmonautika<\/strong><\/h3>\n\n\n\n
                                        \n
                                      • Pozinkov\u00e1n\u00ed<\/strong> - V letectv\u00ed a kosmonautice se pou\u017e\u00edv\u00e1 z\u0159\u00eddka kv\u016fli po\u017eadavk\u016fm na kritickou hmotnost a dostupnosti vynikaj\u00edc\u00edch slitin odoln\u00fdch proti korozi. P\u0159\u00edle\u017eitostn\u011b se pou\u017e\u00edv\u00e1 pro mal\u00e9 spojovac\u00ed prvky, kde je v\u00fdhodn\u00e1 ob\u011btovan\u00e1 ochrana a hmotnost je minim\u00e1ln\u00ed.<\/li>\n\n\n\n
                                      • Niklov\u00e1n\u00ed<\/strong> - P\u0159ednostn\u011b se pou\u017e\u00edv\u00e1 pro kritick\u00e9 letov\u00e9 a motorov\u00e9 sou\u010d\u00e1sti vy\u017eaduj\u00edc\u00ed kombinaci odolnosti proti korozi, opot\u0159eben\u00ed a tepeln\u00e9 odolnosti. Sulf\u00e1tov\u00fd nikl se \u010dasto pou\u017e\u00edv\u00e1 pro konstruk\u010dn\u00ed stavby, zat\u00edmco ENP se pou\u017e\u00edv\u00e1 na p\u0159esn\u00e9 hydraulick\u00e9 pohony, sou\u010d\u00e1sti podvozku a sou\u010d\u00e1sti palivov\u00e9ho syst\u00e9mu, aby se zabr\u00e1nilo korozi v agresivn\u00edm leteck\u00e9m prost\u0159ed\u00ed.<\/li>\n<\/ul>\n\n\n\n

                                        7. \u00davahy o \u017eivotn\u00edm prost\u0159ed\u00ed a bezpe\u010dnosti<\/strong><\/h2>\n\n\n\n
                                        \"\"\/<\/figure>\n\n\n\n

                                        Procesy pokovov\u00e1n\u00ed mus\u00ed spl\u0148ovat p\u0159\u00edsn\u00e9 normy v oblasti ochrany \u017eivotn\u00edho prost\u0159ed\u00ed a bezpe\u010dnosti pr\u00e1ce, proto\u017ee se p\u0159i nich pou\u017e\u00edvaj\u00ed chemick\u00e9 l\u00e1tky, kter\u00e9 mohou m\u00edt vliv na lidsk\u00e9 zdrav\u00ed i ekosyst\u00e9my. Dodr\u017eov\u00e1n\u00ed pr\u00e1vn\u00edch p\u0159edpis\u016f, nakl\u00e1d\u00e1n\u00ed s odpady a ochrana pracovn\u00edk\u016f jsou pro zinkovac\u00ed i niklovac\u00ed provozy z\u00e1sadn\u00ed.<\/p>\n\n\n\n

                                        Pozinkov\u00e1n\u00ed<\/strong><\/h3>\n\n\n\n

                                        P\u0159i pou\u017eit\u00ed modern\u00edch pasiva\u010dn\u00edch syst\u00e9m\u016f, kter\u00e9 jsou v souladu s po\u017eadavky na ochranu \u017eivotn\u00edho prost\u0159ed\u00ed, m\u00e1 zinkov\u00e1n\u00ed ve srovn\u00e1n\u00ed s niklov\u00e1n\u00edm obvykle ni\u017e\u0161\u00ed dopad na \u017eivotn\u00ed prost\u0159ed\u00ed. Tradi\u010dn\u00ed pasivace \u0161estimocn\u00fdm chromem, kdysi b\u011b\u017en\u00e1 kv\u016fli odolnosti proti korozi a barven\u00ed, byla z velk\u00e9 \u010d\u00e1sti zru\u0161ena ve prosp\u011bch syst\u00e9m\u016f s trojmocn\u00fdm chromem, aby se vyhov\u011blo glob\u00e1ln\u00edm p\u0159edpis\u016fm v oblasti \u017eivotn\u00edho prost\u0159ed\u00ed.<\/p>\n\n\n\n

                                        Odpadn\u00ed proudy z pokovov\u00e1n\u00ed zinkem obsahuj\u00ed hlavn\u011b zine\u010dnat\u00e9 soli a alkalick\u00e9 nebo kysel\u00e9 \u010distic\u00ed roztoky, kter\u00e9 jsou m\u00e9n\u011b toxick\u00e9 ne\u017e nikl, ale p\u0159esto vy\u017eaduj\u00ed neutralizaci a regeneraci kov\u016f p\u0159ed vypu\u0161t\u011bn\u00edm. Mnoho za\u0159\u00edzen\u00ed pou\u017e\u00edv\u00e1 uzav\u0159en\u00e9 vodn\u00ed syst\u00e9my a \u010di\u0161t\u011bn\u00ed iontovou v\u00fdm\u011bnou, aby se minimalizovalo vypou\u0161t\u011bn\u00ed odpadn\u00edch vod.<\/p>\n\n\n\n

                                        Niklov\u00e1n\u00ed<\/strong><\/h3>\n\n\n\n

                                        Niklov\u00e1n\u00ed vy\u017eaduje p\u0159\u00edsn\u011bj\u0161\u00ed \u010di\u0161t\u011bn\u00ed odpadn\u00edch vod kv\u016fli toxicit\u011b niklov\u00fdch sol\u00ed. Slou\u010deniny niklu jsou klasifikov\u00e1ny jako nebezpe\u010dn\u00e9 a v mnoha jurisdikc\u00edch jsou regulov\u00e1ny pro sv\u016fj potenci\u00e1l zp\u016fsobovat alergick\u00e9 reakce, respira\u010dn\u00ed probl\u00e9my a toxicitu pro vodn\u00ed organismy. Pokovovac\u00ed d\u00edlny mus\u00ed pou\u017e\u00edvat sr\u00e1\u017eec\u00ed, filtra\u010dn\u00ed a odvod\u0148ovac\u00ed syst\u00e9my, aby z\u00edskaly nikl z oplachov\u00fdch vod p\u0159ed jejich likvidac\u00ed.<\/p>\n\n\n\n

                                        Procesy elektrolytick\u00e9ho niklov\u00e1n\u00ed jsou slo\u017eit\u011bj\u0161\u00ed kv\u016fli obsahu fosforu nebo boru, co\u017e m\u016f\u017ee vy\u017eadovat dal\u0161\u00ed kroky \u00fapravy.<\/p>\n\n\n\n

                                        P\u0159edpisy<\/strong><\/h3>\n\n\n\n

                                        Zinkov\u00e1n\u00ed i niklov\u00e1n\u00ed podl\u00e9h\u00e1 celosv\u011btov\u00fdm p\u0159edpis\u016fm o ochran\u011b \u017eivotn\u00edho prost\u0159ed\u00ed:<\/p>\n\n\n\n

                                          \n
                                        • RoHS (omezen\u00ed nebezpe\u010dn\u00fdch l\u00e1tek)<\/strong> - Omezuje nebezpe\u010dn\u00e9 chemick\u00e9 l\u00e1tky, jako je \u0161estimocn\u00fd chrom, olovo, kadmium a rtu\u0165.<\/li>\n\n\n\n
                                        • REACH (registrace, hodnocen\u00ed, povolov\u00e1n\u00ed a omezov\u00e1n\u00ed chemick\u00fdch l\u00e1tek)<\/strong> - Po\u017eaduje registraci a bezpe\u010dn\u00e9 zach\u00e1zen\u00ed s l\u00e1tkami, v\u010detn\u011b slou\u010denin niklu.<\/li>\n\n\n\n
                                        • Bezpe\u010dnostn\u00ed normy OSHA a EU<\/strong> - Definujte p\u0159\u00edpustn\u00e9 expozi\u010dn\u00ed limity (PEL) pro kovov\u00e9 \u010d\u00e1stice a mlhu ve vzduchu.<\/li>\n<\/ul>\n\n\n\n

                                          Bezpe\u010dnost pracovn\u00edk\u016f<\/strong><\/h3>\n\n\n\n

                                          Obsluha mus\u00ed pou\u017e\u00edvat osobn\u00ed ochrann\u00e9 prost\u0159edky (OOP), jako jsou rukavice, ochrann\u00e9 br\u00fdle, z\u00e1st\u011bry a respir\u00e1tory. Spr\u00e1vn\u00e9 v\u011btr\u00e1n\u00ed a ods\u00e1v\u00e1n\u00ed v\u00fdpar\u016f jsou nezbytn\u00e9 pro kontrolu rizika vdechnut\u00ed kysel\u00fdch mlh a kovov\u00fdch v\u00fdpar\u016f. Pravideln\u00e9 monitorov\u00e1n\u00ed zdravotn\u00edho stavu, \u0161kolen\u00ed a opat\u0159en\u00ed pro omezen\u00ed \u00faniku d\u00e1le zaji\u0161\u0165uj\u00ed bezpe\u010dn\u00e9 pracovn\u00ed prost\u0159ed\u00ed.<\/p>\n\n\n\n

                                          8. Nov\u00e9 trendy v pokovov\u00e1n\u00ed<\/strong><\/h2>\n\n\n\n
                                          \"\"\/<\/figure>\n\n\n\n

                                          Oblast galvanick\u00e9ho pokovov\u00e1n\u00ed se neust\u00e1le vyv\u00edj\u00ed v reakci na p\u0159\u00edsn\u011bj\u0161\u00ed p\u0159edpisy t\u00fdkaj\u00edc\u00ed se \u017eivotn\u00edho prost\u0159ed\u00ed, zvy\u0161uj\u00edc\u00ed se po\u017eadavky na v\u00fdkon a snahu o vy\u0161\u0161\u00ed efektivitu provozu. V technologi\u00edch zinkov\u00e1n\u00ed i niklov\u00e1n\u00ed se inovace zam\u011b\u0159uj\u00ed na zv\u00fd\u0161enou odolnost proti korozi, bezpe\u010dnost pro \u017eivotn\u00ed prost\u0159ed\u00ed a automatizaci proces\u016f.<\/p>\n\n\n\n

                                          Pokoven\u00ed slitinou zinku a niklu<\/strong><\/h3>\n\n\n\n

                                          Povlaky ze slitiny zinku a niklu, obvykle obsahuj\u00edc\u00ed nikl 12-15%, kombinuj\u00ed ob\u011btavou ochranu proti korozi zinku se zv\u00fd\u0161enou chemickou stabilitou niklu. Tato hybridn\u00ed vrstva nab\u00edz\u00ed v\u00fdrazn\u011b del\u0161\u00ed korozn\u00ed \u017eivotnost ve srovn\u00e1n\u00ed s \u010dist\u00fdm zinkem - a\u017e p\u011btkr\u00e1t a\u017e desetkr\u00e1t vy\u0161\u0161\u00ed odolnost proti soln\u00e9 mlze p\u0159i standardizovan\u00fdch testech.<\/p>\n\n\n\n

                                            \n
                                          • Aplikace:<\/strong> Brzdov\u00e9 komponenty pro automobilov\u00fd pr\u016fmysl, spojovac\u00ed materi\u00e1l pro leteck\u00fd pr\u016fmysl, podmo\u0159sk\u00fd hardware pro t\u011b\u017ebu ropy a plynu.<\/li>\n\n\n\n
                                          • V\u00fdhody:<\/strong> Sn\u00ed\u017een\u00e1 tlou\u0161\u0165ka povlaku p\u0159i stejn\u00e9 \u00farovni ochrany, vynikaj\u00edc\u00ed p\u0159ilnavost a zv\u00fd\u0161en\u00e1 odolnost proti opot\u0159eben\u00ed.<\/li>\n\n\n\n
                                          • Trend:<\/strong> St\u00e1le v\u011bt\u0161\u00ed uplatn\u011bn\u00ed v pr\u016fmyslov\u00fdch odv\u011btv\u00edch, kde je rozhoduj\u00edc\u00ed odolnost proti korozi i vzhled.<\/li>\n<\/ul>\n\n\n\n

                                            Nanostrukturovan\u00e9 povlaky<\/strong><\/h3>\n\n\n\n

                                            Nanostrukturovan\u00e9 galvanick\u00e9 vrstvy obsahuj\u00ed zrna nebo \u010d\u00e1stice o velikosti nano (nap\u0159. keramick\u00e9 nano\u010d\u00e1stice) ve vrstv\u00e1ch zinku nebo niklu, co\u017e zlep\u0161uje bari\u00e9rov\u00e9 vlastnosti, tvrdost a odolnost proti opot\u0159eben\u00ed.<\/p>\n\n\n\n

                                              \n
                                            • V\u00fdhody:<\/strong>\n
                                                \n
                                              • Ni\u017e\u0161\u00ed p\u00f3rovitost pro vynikaj\u00edc\u00ed ochranu proti korozi.<\/li>\n\n\n\n
                                              • Zv\u00fd\u0161en\u00e1 mikrotvrdost bez sn\u00ed\u017een\u00ed ta\u017enosti.<\/li>\n\n\n\n
                                              • Potenci\u00e1l pro samomazn\u00e9 nebo protihnilobn\u00e9 vlastnosti p\u0159i zabudov\u00e1n\u00ed funk\u010dn\u00edch nano\u010d\u00e1stic.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                              • Budouc\u00ed potenci\u00e1l:<\/strong> Mohl by nahradit siln\u011bj\u0161\u00ed tradi\u010dn\u00ed n\u00e1t\u011bry, \u010d\u00edm\u017e by se sn\u00ed\u017eila spot\u0159eba materi\u00e1lu a energie.<\/li>\n<\/ul>\n\n\n\n

                                                Trojvalentn\u00ed pasivace<\/strong><\/h3>\n\n\n\n

                                                Tradi\u010dn\u00ed pasivace \u0161estimocn\u00fdm chromem byla kv\u016fli jeho toxicit\u011b a perzistenci v \u017eivotn\u00edm prost\u0159ed\u00ed zam\u011b\u0159ena na odstran\u011bn\u00ed. Syst\u00e9my s trojmocn\u00fdm chromem nyn\u00ed poskytuj\u00ed srovnatelnou ochranu proti korozi s ni\u017e\u0161\u00edm rizikem pro \u017eivotn\u00ed prost\u0159ed\u00ed.<\/p>\n\n\n\n

                                                  \n
                                                • V\u00fdhody:<\/strong> Bezpe\u010dn\u011bj\u0161\u00ed manipulace, dodr\u017eov\u00e1n\u00ed p\u0159edpis\u016f RoHS a REACH a sn\u00ed\u017een\u00ed n\u00e1klad\u016f na likvidaci nebezpe\u010dn\u00e9ho odpadu.<\/li>\n\n\n\n
                                                • Sm\u011br trhu:<\/strong> Celopr\u016fmyslov\u00fd posun sm\u011brem k pou\u017e\u00edv\u00e1n\u00ed bezkyanidov\u00e9 zinkov\u00e9 l\u00e1zn\u011b s n\u00e1slednou trojvalentn\u00ed pasivac\u00ed, kter\u00e1 umo\u017e\u0148uje rychl\u00fd proces pokovov\u00e1n\u00ed, jen\u017e je pln\u011b v souladu s p\u0159edpisy.<\/li>\n<\/ul>\n\n\n\n

                                                  Automatizace v pokovovac\u00edch link\u00e1ch<\/strong><\/h3>\n\n\n\n

                                                  Automatizovan\u00e9 syst\u00e9my \u0159\u00edzen\u00ed proces\u016f se pomalu st\u00e1vaj\u00ed b\u011b\u017en\u00fdmi v modern\u00edch pokovovac\u00edch z\u00e1vodech, proto\u017ee zvy\u0161uj\u00ed konzistenci, kvalitu a efektivitu provozu.<\/p>\n\n\n\n

                                                    \n
                                                  • Pou\u017eit\u00e9 technologie:<\/strong>\n
                                                      \n
                                                    • Integrace PLC (programovateln\u00e9ho logick\u00e9ho automatu) pro sledov\u00e1n\u00ed chemick\u00e9ho slo\u017een\u00ed l\u00e1zn\u011b.<\/li>\n\n\n\n
                                                    • Automatizovan\u00e9 zvedac\u00ed syst\u00e9my pro p\u0159esn\u00e9 pono\u0159en\u00ed a dobu zdr\u017een\u00ed.<\/li>\n\n\n\n
                                                    • Z\u00e1znam dat v re\u00e1ln\u00e9m \u010dase pro zaji\u0161t\u011bn\u00ed kvality a regula\u010dn\u00ed hl\u00e1\u0161en\u00ed.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                                    • V\u00fdhody:<\/strong> Sn\u00ed\u017een\u00ed n\u00e1klad\u016f na pracovn\u00ed s\u00edlu, sn\u00ed\u017een\u00ed chybovosti lidsk\u00e9ho faktoru a p\u0159\u00edsn\u011bj\u0161\u00ed kontrola tlou\u0161\u0165ky povlaku a kvality povrchu.<\/li>\n\n\n\n
                                                    • Trend:<\/strong> Zaveden\u00ed senzor\u016f, propojen\u00ed s internetem v\u011bc\u00ed a pou\u017eit\u00ed um\u011bl\u00e9 inteligence k optimalizaci proces\u016f vedlo k tomu, \u017ee pokovovny jsou vybaveny pr\u016fmyslem 4.0.<\/li>\n<\/ul>\n\n\n\n

                                                      9. Z\u00e1v\u011br<\/strong><\/h2>\n\n\n\n

                                                      Zinkov\u00e1n\u00ed a niklov\u00e1n\u00ed jsou technologie povrchov\u00e9 \u00fapravy, kter\u00e9 jsou st\u00e1le velmi pot\u0159ebn\u00e9, proto\u017ee tyto typy technologi\u00ed maj\u00ed sv\u00e9 vlastn\u00ed v\u00fdhody, kter\u00e9 jsou specifick\u00e9 pro po\u017eadavky pr\u016fmyslu. Zinkov\u00e1n\u00ed se hojn\u011b pou\u017e\u00edv\u00e1 v n\u00e1kladov\u011b efektivn\u00ed, ob\u011btav\u00e9 ochran\u011b proti korozi a nach\u00e1z\u00ed uplatn\u011bn\u00ed ve spojovac\u00edch prvc\u00edch, konstrukc\u00edch a p\u0159\u00edpadech pou\u017eit\u00ed, kde jsou d\u016fle\u017eit\u00fdmi faktory n\u00edzk\u00e1 cena a dostate\u010dn\u00e1 odolnost v\u016f\u010di atmosf\u00e9rick\u00fdm vliv\u016fm. Oproti tomu niklov\u00e1n\u00ed p\u0159in\u00e1\u0161\u00ed vynikaj\u00edc\u00ed tvrdost, odolnost proti opot\u0159eben\u00ed a ochranu proti korozi (zejm\u00e9na p\u0159i bezelektrick\u00e9m pokovov\u00e1n\u00ed), a proto se pou\u017e\u00edv\u00e1 tam, kde jsou po\u017eadov\u00e1ny dekorativn\u00ed povrchov\u00e9 \u00fapravy, p\u0159esn\u00e9 technick\u00e9 sou\u010d\u00e1sti a\/nebo n\u00e1ro\u010dn\u00e9 provozn\u00ed podm\u00ednky.<\/p>\n\n\n\n

                                                      V\u00fdvoj pokovov\u00e1n\u00ed slitinami zinku a niklu, nanostrukturovan\u00fdch povlak\u016f, trojvalentn\u00ed pasivace a automatizace m\u011bn\u00ed odv\u011btv\u00ed pokovov\u00e1n\u00ed a reaguje na po\u017eadavky na vy\u0161\u0161\u00ed v\u00fdkonnost i p\u0159\u00edsn\u011bj\u0161\u00ed ekologick\u00e9 normy. P\u0159esto\u017ee zinek m\u00e1 ekonomick\u00e9 v\u00fdhody, univerz\u00e1lnost a trvanlivost niklu zajistily jeho nenahraditelnost v leteck\u00e9m a lodn\u00edm pr\u016fmyslu a ve vysoce v\u00fdkonn\u00fdch aplikac\u00edch.<\/p>\n\n\n\n

                                                      Zejm\u00e9na obavy o \u017eivotn\u00ed prost\u0159ed\u00ed a bezpe\u010dnost vedou k tomu, \u017ee se inovace zam\u011b\u0159uj\u00ed na ekologi\u010dt\u011bj\u0161\u00ed a udr\u017eiteln\u011bj\u0161\u00ed procesy, nap\u0159\u00edklad na sn\u00ed\u017een\u00ed pou\u017e\u00edv\u00e1n\u00ed toxick\u00fdch chemik\u00e1li\u00ed. Automatizovan\u00e9 \u0159\u00eddic\u00ed syst\u00e9my se v modern\u00edch pokovovac\u00edch za\u0159\u00edzen\u00edch st\u00e1vaj\u00ed velmi b\u011b\u017en\u00fdmi, proto\u017ee usnad\u0148uj\u00ed konzistentn\u00ed kvalitu, sni\u017euj\u00ed pl\u00fdtv\u00e1n\u00ed a zvy\u0161uj\u00ed efektivitu.<\/p>\n\n\n\n

                                                      V neposledn\u00ed \u0159ad\u011b rozhoduj\u00ed o rozd\u00edlu mezi zinkov\u00e1n\u00edm a niklov\u00e1n\u00edm n\u00e1klady versus spolehlivost, vzhled a dopad na \u017eivotn\u00ed prost\u0159ed\u00ed. Tyto povlaky se budou vzhledem k n\u00e1r\u016fstu technologi\u00ed je\u0161t\u011b d\u00e1le vyv\u00edjet a budou m\u00edt co nab\u00eddnout v oblasti tlumen\u00ed a udr\u017eitelnosti v r\u016fzn\u00fdch pr\u016fmyslov\u00fdch procesech.<\/p>\n\n\n\n

                                                      Nej\u010dast\u011bj\u0161\u00ed dotazy<\/strong><\/h2>\n\n\n\n

                                                      Ot\u00e1zka 1: Je lep\u0161\u00ed zinkov\u00e9 nebo niklov\u00e9 pokoven\u00ed z hlediska ochrany proti korozi?<\/strong><\/h3>\n\n\n\n

                                                      Nikl poskytuje nejlep\u0161\u00ed bari\u00e9rovou ochranu a zinek je ob\u011btav\u00fd, obvykle v z\u00e1vislosti na prost\u0159ed\u00ed.<\/p>\n\n\n\n

                                                      Ot\u00e1zka 2: Je niklov\u00e1n\u00ed dra\u017e\u0161\u00ed ne\u017e zinkov\u00e1n\u00ed?<\/strong><\/h3>\n\n\n\n

                                                      Pr\u00e1v\u011b n\u00e1klady na niklov\u00e1n\u00ed jsou obvykle vy\u0161\u0161\u00ed, proto\u017ee ceny materi\u00e1lu a zpracov\u00e1n\u00ed jsou slo\u017eit\u011bj\u0161\u00ed.<\/p>\n\n\n\n

                                                      Ot\u00e1zka 3: Je mo\u017en\u00e9 zinkovat nebo niklovat nekovov\u00e9 materi\u00e1ly?<\/strong><\/h3>\n\n\n\n

                                                      Oboj\u00ed lze pou\u017e\u00edt na plasty a\/nebo kompozity, ano, s vhodnou p\u0159edb\u011b\u017enou \u00fapravou.<\/p>\n\n\n\n

                                                      Ot\u00e1zka 4: Kter\u00e9 z t\u011bchto dvou pokoven\u00ed je lep\u0161\u00ed, kdy\u017e chcete b\u00fdt dekorativn\u00ed?<\/strong><\/h3>\n\n\n\n

                                                      Niklov\u00e1n\u00ed nab\u00edz\u00ed bohat\u00fd leskl\u00fd vzhled, kter\u00fd z n\u011bj \u010din\u00ed nejlep\u0161\u00ed volbu zejm\u00e9na pro dekorativn\u00ed \u00fa\u010dely.<\/p>","protected":false},"excerpt":{"rendered":"

                                                      Metal plating is the most versatile and valuable of all the surface finishing processes in manufacturing and has many benefits that far transcend mere aesthetics. Depositing a thin layer of a metallic material over that of a base material, typically steel, copper or aluminum, manufacturers can: increase corrosion resistance; strengthen wear durability; enhance electrical conductivity […]<\/p>\n","protected":false},"author":3,"featured_media":1796,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[124,125,126],"tags":[114,43,87,127,128],"class_list":["post-1795","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-plating","category-nickel-plating","category-zinc-plating-plating","tag-nickel-plating","tag-zinc-die-casting","tag-zinc-plating","tag-zinc-plating-vs-nickel-plating","tag-zinc-vs-nickel-plating"],"_links":{"self":[{"href":"https:\/\/www.diecastingschina.com\/cs\/wp-json\/wp\/v2\/posts\/1795","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.diecastingschina.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.diecastingschina.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.diecastingschina.com\/cs\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.diecastingschina.com\/cs\/wp-json\/wp\/v2\/comments?post=1795"}],"version-history":[{"count":0,"href":"https:\/\/www.diecastingschina.com\/cs\/wp-json\/wp\/v2\/posts\/1795\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.diecastingschina.com\/cs\/wp-json\/wp\/v2\/media\/1796"}],"wp:attachment":[{"href":"https:\/\/www.diecastingschina.com\/cs\/wp-json\/wp\/v2\/media?parent=1795"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.diecastingschina.com\/cs\/wp-json\/wp\/v2\/categories?post=1795"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.diecastingschina.com\/cs\/wp-json\/wp\/v2\/tags?post=1795"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}