{"id":4134,"date":"2026-05-26T16:28:53","date_gmt":"2026-05-26T14:28:53","guid":{"rendered":"https:\/\/hamco-germany.com\/?post_type=fachbegriff&#038;p=4134"},"modified":"2026-05-26T16:29:35","modified_gmt":"2026-05-26T14:29:35","slug":"zamrzle-napeti","status":"publish","type":"fachbegriff","link":"https:\/\/hamco-germany.com\/cs\/fachbegriff\/eingefrorene-spannungen\/","title":{"rendered":"Zmrazen\u00e9 nap\u011bt\u00ed"},"content":{"rendered":"<p>P\u0159edstavte si, \u017ee si po dlouh\u00e9 dob\u011b obl\u00e9knete oblek, kter\u00fd jste m\u011bli naposledy na sob\u011b na svatb\u011b. V\u0161imnete si, \u017ee kalhoty byly v minulosti voln\u011bj\u0161\u00ed, ale koup\u011b nov\u00e9ho obleku pro v\u00e1s nep\u0159ipad\u00e1 v \u00favahu. Trochu si st\u00e1hnete b\u0159icho, zapnete kalhoty a pomysl\u00edte si: \"P\u00e1r hodin to vydr\u017e\u00edm, jen se (moc) neh\u00fdbejte, pak se s m\u00edrn\u00fdm tlakem kolem b\u0159icha vyrovn\u00e1m. V obleku bude\u0161 vypadat dob\u0159e.<\/p>\n<p>P\u0159i vst\u0159ikov\u00e1n\u00ed je hork\u00fd plast velmi rychle vst\u0159ikov\u00e1n do ochlazen\u00e9 geometrie n\u00e1stroje n\u00e1sledn\u00e9ho plastov\u00e9ho v\u00fdlisku. Pak p\u0159ich\u00e1z\u00ed velk\u00fd \u0161ok: chlazen\u00ed! Materi\u00e1l, kter\u00fd byl pr\u00e1v\u011b rychle zafixov\u00e1n, b\u011bhem pohybu strachem tuhne a v\u0161e se rychle st\u00e1v\u00e1 p\u0159\u00edli\u0161 t\u011bsn\u00fdm v d\u016fsledku n\u00e1stupu smr\u0161\u0165ov\u00e1n\u00ed. S <a href=\"https:\/\/hamco-germany.com\/cs\/technicky-termin\/dynamicky-tlak-udrzovaci-tlak\/\">P\u0159etisk a udr\u017eovac\u00ed tlak<\/a> chyb\u011bj\u00edc\u00ed molekuly plastu se vtla\u010d\u00ed do formy. Kdy\u017e u\u017e nedoch\u00e1z\u00ed k \u017e\u00e1dn\u00e9mu pohybu, sou\u010d\u00e1st se odformuje a navzdory zmrzl\u00e9mu vnit\u0159n\u00edmu pnut\u00ed vypad\u00e1 navenek dob\u0159e.<\/p>\n<p>Zven\u010d\u00ed vypad\u00e1 v\u0161e dob\u0159e, jak pro komponenty, tak pro lidi. Uvnit\u0159 je v\u0161ak t\u00edsniv\u011b \u0161patn\u00e1 n\u00e1lada. Kone\u010dn\u011b z kalhot - jak\u00e1 \u00faleva. Pokud je sou\u010d\u00e1stka pozd\u011bji vystavena z\u00e1t\u011b\u017ei, zah\u0159\u00e1t\u00e1 nebo p\u0159ijde do styku s ur\u010dit\u00fdmi chemick\u00fdmi l\u00e1tkami, m\u016f\u017ee se toto skryt\u00e9, zamrzl\u00e9 nap\u011bt\u00ed uvolnit.  Sou\u010d\u00e1stka se pak deformuje, dostane <a href=\"https:\/\/hamco-germany.com\/cs\/technicky-termin\/praskliny-zpusobene-napetim-stribrnych-rybek\/\">Trhliny pod nap\u011bt\u00edm<\/a>\u00a0nebo p\u0159est\u00e1vek.<\/p>","protected":false},"featured_media":0,"parent":0,"template":"","class_list":["post-4134","fachbegriff","type-fachbegriff","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/hamco-germany.com\/cs\/wp-json\/wp\/v2\/fachbegriff\/4134","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hamco-germany.com\/cs\/wp-json\/wp\/v2\/fachbegriff"}],"about":[{"href":"https:\/\/hamco-germany.com\/cs\/wp-json\/wp\/v2\/types\/fachbegriff"}],"wp:attachment":[{"href":"https:\/\/hamco-germany.com\/cs\/wp-json\/wp\/v2\/media?parent=4134"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}