{"id":23482,"date":"2024-11-19T17:29:10","date_gmt":"2024-11-19T09:29:10","guid":{"rendered":"https:\/\/moldiecasting.com\/?p=23482"},"modified":"2026-10-09T02:21:27","modified_gmt":"2026-10-08T18:21:27","slug":"die-casting-vs-sand-casting","status":"publish","type":"post","link":"https:\/\/moldiecasting.com\/cs\/blog\/die-casting-vs-sand-casting\/","title":{"rendered":"Tlakov\u00e9 lit\u00ed vs. p\u00edskov\u00e9 lit\u00ed: jak\u00e9 jsou rozd\u00edly?"},"content":{"rendered":"

\"\"<\/p>\n

Tlakov\u00e9 a p\u00edskov\u00e9 lit\u00ed jsou dv\u011b nejpou\u017e\u00edvan\u011bj\u0161\u00ed metody odl\u00e9v\u00e1n\u00ed.<\/p>\n

Tento \u010dl\u00e1nek rozeb\u00edr\u00e1 hlavn\u00ed rozd\u00edly mezi tlakov\u00fdm a p\u00edskov\u00fdm lit\u00edm a porovn\u00e1v\u00e1 objem v\u00fdroby, slo\u017eitost d\u00edl\u016f, tlou\u0161\u0165ku st\u011bn, hospod\u00e1rnost a vlastnosti materi\u00e1l\u016f.<\/p>\n

Co je tlakov\u00e9 lit\u00ed?<\/strong><\/h2>\n

P\u0159i \u00a0<\/a>tlakov\u00e9m lit\u00ed<\/u><\/a> se kov roztav\u00ed a pod vysok\u00fdm tlakem vst\u0159\u00edkne do kovov\u00e9 formy. Formy pro tlakov\u00e9 lit\u00ed b\u00fdvaj\u00ed obvykle ocelov\u00e9 a odol\u00e1vaj\u00ed vysok\u00fdm teplot\u00e1m, co\u017e ve srovn\u00e1n\u00ed s p\u00edskov\u00fdm lit\u00edm umo\u017e\u0148uje rychlej\u0161\u00ed v\u00fdrobu. Povrchy dutina formy<\/strong> jsou navr\u017eeny tak, aby vytv\u00e1\u0159ely slo\u017eit\u00e9 d\u00edly s mno\u017estv\u00edm detail\u016f. Opakovan\u011b pou\u017eiteln\u00e1 forma p\u0159isp\u00edv\u00e1 ke konzistentn\u011bj\u0161\u00edmu povrchu v\u00fdrobk\u016f.<\/p>\n

Z\u00e1kladn\u00ed postup tlakov\u00e9ho lit\u00ed:<\/p>\n

    \n
  1. P\u0159\u00edprava formy<\/strong>: O\u010dist\u011bte ji a naneste separa\u010dn\u00ed prost\u0159edek.<\/li>\n
  2. Uzav\u0159en\u00ed formy<\/strong>: Pevn\u011b spojte ob\u011b poloviny formy.<\/li>\n
  3. Vst\u0159\u00edknut\u00ed roztaven\u00e9ho kovu<\/strong>: Roztaven\u00fd kov se pod vysok\u00fdm tlakem vtla\u010d\u00ed do dutiny formy.<\/li>\n
  4. Chlazen\u00ed<\/strong>: Kov ztuhne do po\u017eadovan\u00e9ho tvaru.<\/li>\n
  5. Vyjmut\u00ed odlitku<\/strong>: Otev\u0159ete formu a vyjm\u011bte odlitek.<\/li>\n<\/ol>\n

    Co je p\u00edskov\u00e9 lit\u00ed?<\/strong><\/h2>\n

    \"\"<\/strong><\/p>\n

    P\u00edskov\u00e9 lit\u00ed na rozd\u00edl od tlakov\u00e9ho pou\u017e\u00edv\u00e1 k tvarov\u00e1n\u00ed kovov\u00fdch d\u00edl\u016f formu z p\u00edsku. Jde o v\u0161estrannou metodu, kter\u00e1 umo\u017e\u0148uje odl\u00e9vat kovy s vysok\u00fdm bodem t\u00e1n\u00ed i velk\u00e9 d\u00edly. Pat\u0159\u00ed k nejstar\u0161\u00edm a nejtradi\u010dn\u011bj\u0161\u00edm zp\u016fsob\u016fm odl\u00e9v\u00e1n\u00ed a je zn\u00e1m\u00e1 flexibilitou p\u0159i volb\u011b materi\u00e1l\u016f a tvar\u016f.<\/p>\n

    Po nalit\u00ed kovu do formy a jeho ztuhnut\u00ed se p\u00edskov\u00e1 forma rozbije a odlitek se vyjme. Na rozd\u00edl od odoln\u00fdch kovov\u00fdch forem pro tlakov\u00e9 lit\u00ed se p\u00edskov\u00e9 formy pou\u017e\u00edvaj\u00ed pouze jednou. Jednotliv\u00e9 odlitky se proto mohou m\u00edrn\u011b li\u0161it a maj\u00ed drsn\u011bj\u0161\u00ed povrch. P\u00edskov\u00e9 lit\u00ed m\u00e1 v\u0161ak ni\u017e\u0161\u00ed po\u010d\u00e1te\u010dn\u00ed n\u00e1klady a lze je pou\u017e\u00edt pro \u0161irokou \u0161k\u00e1lu kov\u016f.<\/p>\n

    P\u00edskov\u00e9 lit\u00ed obvykle zahrnuje tyto kroky:<\/p>\n

      \n
    1. V\u00fdroba formy<\/strong>: Zhutn\u011bte p\u00edsek kolem modelu d\u00edlu.<\/li>\n
    2. Vyjmut\u00ed modelu<\/strong>: Po zhutn\u011bn\u00ed p\u00edsku model vyjm\u011bte; z\u016fstane dutina.<\/li>\n
    3. Nalit\u00ed roztaven\u00e9ho kovu<\/strong>: Nalijte roztaven\u00fd kov do dutiny p\u00edskov\u00e9 formy.<\/li>\n
    4. Tuhnut\u00ed<\/strong>: Nechte kov vychladnout a ztvrdnout.<\/li>\n
    5. Rozbit\u00ed formy<\/strong>: Rozbijte p\u00edskovou formu a odhalte surov\u00fd odlitek.<\/li>\n
    6. Dokon\u010den\u00ed<\/strong>: O\u010dist\u011bte odlitek a podle pot\u0159eby jej dokon\u010dete.<\/li>\n<\/ol>\n

      Jak\u00e9 jsou rozd\u00edly mezi p\u00edskov\u00fdm a tlakov\u00fdm lit\u00edm?<\/strong><\/h2>\n

      P\u0159ehled hlavn\u00edch rozd\u00edl\u016f najdete v n\u00e1sleduj\u00edc\u00ed tabulce:<\/p>\n\n\n\n\n\n\n\n\n\n
      Krit\u00e9rium<\/strong><\/td>\nP\u00edskov\u00e9 lit\u00ed<\/strong><\/td>\nTlakov\u00e9 lit\u00ed<\/strong><\/td>\n<\/tr>\n
      Materi\u00e1l formy<\/strong><\/td>\n\u25cf\u00a0\u017delezo (litina i kovan\u00e9 \u017eelezo):<\/strong> Vhodn\u00e9 pro vysoce nam\u00e1han\u00e9 sou\u010d\u00e1sti.<\/p>\n

      \u25cf\u00a0Mosaz:<\/strong> B\u011b\u017en\u00e1 volba pro dobrou odolnost proti korozi.<\/p>\n

      \u25cf\u00a0Bronz:<\/strong> Nab\u00edz\u00ed v\u00fdbornou odolnost proti opot\u0159eben\u00ed.<\/td>\n

      		\u25cf\u00a0Zinek<\/a>:<\/strong> Snadno se odl\u00e9v\u00e1, nab\u00edz\u00ed vysokou ta\u017enost a r\u00e1zovou pevnost a je nejhospod\u00e1rn\u011bj\u0161\u00ed pro mal\u00e9 d\u00edly.<\/p>\n

      \u25cf\u00a0Hlin\u00edk<\/a>:<\/strong> Je lehk\u00fd, z\u00e1rove\u0148 velmi pevn\u00fd a odol\u00e1v\u00e1 vysok\u00fdm teplot\u00e1m.<\/p>\n

      \u25cf\u00a0Ho\u0159\u010d\u00edk:<\/strong> Pokud pot\u0159ebujete velmi lehk\u00fd a z\u00e1rove\u0148 pevn\u00fd materi\u00e1l, je vhodnou volbou.<\/td>\n<\/tr>\n

      Povrchov\u00e1 \u00faprava<\/strong><\/td>\nHrub\u0161\u00ed povrch<\/td>\nHlad\u0161\u00ed povrch<\/td>\n<\/tr>\n
      Efektivita v\u00fdroby<\/strong><\/td>\nNi\u017e\u0161\u00ed efektivita<\/td>\nVy\u0161\u0161\u00ed efektivita<\/td>\n<\/tr>\n
      N\u00e1klady<\/strong><\/td>\nNi\u017e\u0161\u00ed n\u00e1klady<\/td>\nVy\u0161\u0161\u00ed n\u00e1klady<\/td>\n<\/tr>\n
      Rozm\u011brov\u00e1 p\u0159esnost<\/strong><\/td>\nNi\u017e\u0161\u00ed p\u0159esnost<\/td>\nVy\u0161\u0161\u00ed p\u0159esnost<\/td>\n<\/tr>\n
      V\u0161estrannost<\/strong><\/td>\nVelmi v\u0161estrann\u00e9<\/td>\nM\u00e9n\u011b v\u0161estrann\u00e9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      V\u00fdhody a nev\u00fdhody tlakov\u00e9ho a p\u00edskov\u00e9ho lit\u00ed<\/strong><\/h2>\n

      V\u00fdhody tlakov\u00e9ho lit\u00ed:<\/strong><\/p>\n