{"id":7362,"date":"2025-08-05T11:26:45","date_gmt":"2025-08-05T03:26:45","guid":{"rendered":"https:\/\/www.qualitester.com\/?p=7362"},"modified":"2025-08-05T11:26:45","modified_gmt":"2025-08-05T03:26:45","slug":"shrinkage-tester","status":"publish","type":"post","link":"https:\/\/www.qualitester.com\/sk\/shrinkage-tester\/","title":{"rendered":"Tester zmr\u0161tenia a kritick\u00e1 \u00faloha testovania gumov\u00fdch materi\u00e1lov"},"content":{"rendered":"<p data-start=\"304\" data-end=\"711\"><a href=\"https:\/\/www.qualitester.com\/sk\/?s=FST-01\"><img decoding=\"async\" class=\"wp-image-7367 alignleft\" src=\"https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/08\/shrinkage-tester-300x300.webp\" alt=\"tester zmr\u0161tenia\" width=\"191\" height=\"191\" srcset=\"https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/08\/shrinkage-tester-300x300.webp 300w, https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/08\/shrinkage-tester-1024x1024.webp 1024w, https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/08\/shrinkage-tester-150x150.webp 150w, https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/08\/shrinkage-tester-768x768.webp 768w, https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/08\/shrinkage-tester-12x12.webp 12w, https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/08\/shrinkage-tester-600x600.webp 600w, https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/08\/shrinkage-tester-100x100.webp 100w, https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/08\/shrinkage-tester.webp 1200w\" sizes=\"(max-width: 191px) 100vw, 191px\" \/><\/a>0Pri v\u00fdrobe a zabezpe\u010dovan\u00ed kvality v\u00fdrobkov na b\u00e1ze gumy je rozhoduj\u00faca kontrola reakcie materi\u00e1lov na teplo. Na str\u00e1nke . <strong data-start=\"431\" data-end=\"451\">tester zmr\u0161tenia<\/strong> zohr\u00e1va k\u013e\u00fa\u010dov\u00fa \u00falohu pri hodnoten\u00ed tepeln\u00e9ho v\u00fdkonu, najm\u00e4 ak sa aplikuje na <strong data-start=\"539\" data-end=\"582\">sk\u00fa\u0161ka tepeln\u00e9ho zmr\u0161\u0165ovania gumov\u00fdch materi\u00e1lov<\/strong>. Tento proces je nevyhnutn\u00fd nielen na zabezpe\u010denie trvanlivosti v\u00fdrobku, ale aj na splnenie priemyseln\u00fdch noriem, ako napr. <a href=\"https:\/\/store.astm.org\/d2732-14r20.html\" target=\"_blank\" rel=\"noopener nofollow\"><strong data-start=\"696\" data-end=\"710\">ASTM D2732<\/strong><\/a>.<\/p>\n<hr \/>\n<h2 data-start=\"304\" data-end=\"711\">Sk\u00fa\u0161ka tepeln\u00e9ho zmr\u0161tenia gumov\u00fdch materi\u00e1lov: K\u013e\u00fa\u010d k tepelnej spo\u013eahlivosti<\/h2>\n<p data-start=\"792\" data-end=\"1164\">Gumov\u00e9 materi\u00e1ly sa \u0161iroko pou\u017e\u00edvaj\u00fa v kritick\u00fdch aplik\u00e1ci\u00e1ch vr\u00e1tane <strong data-start=\"861\" data-end=\"936\">automobilov\u00e9 tesnenia, elektrick\u00e1 izol\u00e1cia, r\u00farky a priemyseln\u00e9 tesnenia<\/strong>. Tieto komponenty \u010dasto \u010delia zv\u00fd\u0161en\u00fdm teplot\u00e1m po\u010das spracovania alebo kone\u010dn\u00e9ho pou\u017eitia. Zvy\u0161kov\u00e9 nap\u00e4tie, ktor\u00e9 vznik\u00e1 po\u010das v\u00fdroby, m\u00f4\u017ee sp\u00f4sobi\u0165 ne\u017eiaduce <strong data-start=\"1085\" data-end=\"1113\">zmr\u0161tenie alebo deform\u00e1cia<\/strong>, \u010do vedie k zlyhaniu v\u00fdrobku, ak sa nezist\u00ed v\u010das.<\/p>\n<p data-start=\"1166\" data-end=\"1298\">Tu sa nach\u00e1dza <strong data-start=\"1184\" data-end=\"1227\">sk\u00fa\u0161ka tepeln\u00e9ho zmr\u0161\u0165ovania gumov\u00fdch materi\u00e1lov<\/strong> sa st\u00e1va nepostr\u00e1date\u013en\u00fdm. Pomocou testera zmr\u0161tenia m\u00f4\u017eu v\u00fdrobcovia:<\/p>\n<ul>\n<li data-start=\"1302\" data-end=\"1382\">Zisti\u0165 <strong data-start=\"1309\" data-end=\"1330\">vn\u00fatorn\u00e9 nap\u00e4tie<\/strong> vznikaj\u00face pri vytl\u00e1\u010dan\u00ed, lisovan\u00ed alebo kalend\u00e1rovan\u00ed<\/li>\n<li data-start=\"1385\" data-end=\"1456\">Zhodno\u0165te <strong data-start=\"1396\" data-end=\"1421\">rozmerov\u00e1 stabilita<\/strong> gumy pri tepelnej expoz\u00edcii<\/li>\n<li data-start=\"1459\" data-end=\"1516\">Optimaliz\u00e1cia <strong data-start=\"1468\" data-end=\"1493\">zlo\u017eenie materi\u00e1lu<\/strong> a procesy vytvrdzovania<\/li>\n<li data-start=\"1519\" data-end=\"1568\">Monitor <strong data-start=\"1527\" data-end=\"1550\">konzistentnos\u0165 kvality<\/strong> po\u010das v\u00fdroby<\/li>\n<\/ul>\n<p data-start=\"1570\" data-end=\"1700\">Pochopenie tohto spr\u00e1vania pred uveden\u00edm v\u00fdrobku do praxe pom\u00e1ha zabezpe\u010di\u0165 <strong data-start=\"1649\" data-end=\"1699\">v\u00fdkonnos\u0165, bezpe\u010dnos\u0165 a spokojnos\u0165 z\u00e1kazn\u00edkov<\/strong>.<\/p>\n<hr \/>\n<h2 data-start=\"1570\" data-end=\"1700\">Ako norma ASTM D2732 podporuje presn\u00e9 testovanie<\/h2>\n<p data-start=\"1752\" data-end=\"2019\">Str\u00e1nka <strong data-start=\"1756\" data-end=\"1770\">ASTM D2732<\/strong> norma uv\u00e1dza postup hodnotenia <strong data-start=\"1818\" data-end=\"1859\">neobmedzen\u00e9 line\u00e1rne tepeln\u00e9 zmr\u0161\u0165ovanie<\/strong> plastov\u00fdch a gumov\u00fdch f\u00f3li\u00ed. Zah\u0155\u0148a ponorenie vopred narezan\u00fdch vzoriek do <strong data-start=\"1932\" data-end=\"1970\">kvapalinov\u00fd k\u00fape\u013e s riadenou teplotou<\/strong> a meranie zmeny ve\u013ekosti po expoz\u00edcii.<\/p>\n<p data-start=\"2021\" data-end=\"2322\">Hoci bola p\u00f4vodne navrhnut\u00e1 pre termoplastick\u00e9 f\u00f3lie, norma ASTM D2732 je pou\u017eite\u013en\u00e1 aj pre <strong data-start=\"2105\" data-end=\"2125\">gumov\u00e9 materi\u00e1ly<\/strong> s geometriou podobnou filmu alebo s konfigur\u00e1ciou tenk\u00e9ho pl\u00e1tu. Test simuluje re\u00e1lne podmienky, v ktor\u00fdch m\u00f4\u017eu gumov\u00e9 komponenty po\u010das balenia, steriliz\u00e1cie alebo pou\u017e\u00edvania za\u017e\u00edva\u0165 zv\u00fd\u0161en\u00e9 teploty.<\/p>\n<hr \/>\n<h2 data-start=\"2021\" data-end=\"2322\">Preh\u013ead testovacieho postupu<\/h2>\n<p data-start=\"2364\" data-end=\"2446\">Pou\u017eitie <strong data-start=\"2372\" data-end=\"2392\">tester zmr\u0161tenia<\/strong> pod\u013ea normy ASTM D2732 zah\u0155\u0148a tieto kroky:<\/p>\n<p><strong data-start=\"2448\" data-end=\"2473\">1. Pr\u00edprava vzorky<\/strong><br data-start=\"2473\" data-end=\"2476\" \/>Nastrihajte gumov\u00fa f\u00f3liu alebo f\u00f3liu do tvaru <strong data-start=\"2512\" data-end=\"2533\">\u0160tvorec 100 \u00d7 100 mm<\/strong>, pomocou \u0161abl\u00f3ny s pe\u010diatkou. Uistite sa, \u017ee <strong data-start=\"2572\" data-end=\"2593\">smer stroja<\/strong> je ozna\u010den\u00e1.<\/p>\n<p><strong data-start=\"2606\" data-end=\"2625\">2. Kondi\u010dn\u00e1 pr\u00edprava<\/strong><br data-start=\"2625\" data-end=\"2628\" \/>Vzorku upravte pod\u013ea <strong data-start=\"2662\" data-end=\"2675\">ASTM D618<\/strong> na stabiliz\u00e1ciu \u00fa\u010dinkov teploty a vlhkosti.<\/p>\n<p><strong data-start=\"2724\" data-end=\"2741\">3. Nastavenie testu<\/strong><\/p>\n<ul>\n<li data-start=\"2746\" data-end=\"2841\">Napl\u0148te tester kompatibilnou kvapalinou, napr. <strong data-start=\"2799\" data-end=\"2811\">glycer\u00edn<\/strong> alebo <strong data-start=\"2815\" data-end=\"2838\">polyetyl\u00e9nglykol<\/strong>.<\/li>\n<li data-start=\"2844\" data-end=\"2938\">Nastavte teplotu (be\u017ene 100\u00b0C-150\u00b0C pre gumu) a nechajte ju ust\u00e1li\u0165 v rozmedz\u00ed \u00b10,5\u00b0C.<\/li>\n<\/ul>\n<p><strong data-start=\"2940\" data-end=\"2980\">4. Meranie ponorenia a zmr\u0161tenia<\/strong><\/p>\n<ul>\n<li data-start=\"2985\" data-end=\"3023\">Vzorku ponorte na 10 sek\u00fand.<\/li>\n<li data-start=\"3026\" data-end=\"3083\">Bezprostredne po odstr\u00e1nen\u00ed zmerajte d\u013a\u017eku a \u0161\u00edrku.<\/li>\n<li data-start=\"3086\" data-end=\"3114\">Vypo\u010d\u00edtajte zmr\u0161tenie pomocou:<\/li>\n<\/ul>\n<p style=\"text-align: center;\" data-start=\"3117\" data-end=\"3174\"><strong data-start=\"3117\" data-end=\"3174\">Zmen\u0161enie (%) = [(p\u00f4vodn\u00fd - kone\u010dn\u00fd) \/ p\u00f4vodn\u00fd] \u00d7 100<\/strong><\/p>\n<p><strong data-start=\"3176\" data-end=\"3206\">5. Opakovanie pre presnos\u0165<\/strong><br data-start=\"3206\" data-end=\"3209\" \/>Najmenej <strong data-start=\"3218\" data-end=\"3251\">dve vzorky na teplotu<\/strong> by sa mali testova\u0165, aby sa zabezpe\u010dila konzistentnos\u0165 a opakovate\u013enos\u0165.<\/p>\n<hr \/>\n<h2 data-start=\"3176\" data-end=\"3309\">Pre\u010do je tento test pre gumov\u00e9 materi\u00e1ly kritick\u00fd<\/h2>\n<p data-start=\"3367\" data-end=\"3618\">Na rozdiel od plastov\u00fdch f\u00f3li\u00ed gumov\u00e9 materi\u00e1ly \u010dasto obsahuj\u00fa <strong data-start=\"3420\" data-end=\"3470\">plnidl\u00e1, zm\u00e4k\u010dovadl\u00e1 a sie\u0165ovacie \u010dinidl\u00e1<\/strong> ktor\u00e9 m\u00f4\u017eu ovplyvni\u0165 tepeln\u00e9 spr\u00e1vanie. Sk\u00fa\u0161ka tepeln\u00e9ho zmr\u0161tenia poskytuje jasn\u00fd obraz o tom, ako tieto komponenty p\u00f4sobia v tepeln\u00fdch podmienkach.<\/p>\n<p data-start=\"3620\" data-end=\"3655\">K\u013e\u00fa\u010dov\u00e9 poznatky z testu zah\u0155\u0148aj\u00fa:<\/p>\n<ul>\n<li data-start=\"3659\" data-end=\"3702\"><strong data-start=\"3659\" data-end=\"3678\">Rovnomernos\u0165 lie\u010dby<\/strong> a hustota zosie\u0165ovania<\/li>\n<li data-start=\"3705\" data-end=\"3733\"><strong data-start=\"3705\" data-end=\"3722\">Tepeln\u00e9 starnutie<\/strong> spr\u00e1vanie<\/li>\n<li data-start=\"3736\" data-end=\"3781\">N\u00e1chylnos\u0165 na <strong data-start=\"3754\" data-end=\"3779\">pokr\u010denie alebo vybo\u010denie<\/strong><\/li>\n<li data-start=\"3784\" data-end=\"3813\">Dlhodob\u00e9 <strong data-start=\"3794\" data-end=\"3813\">zachovanie tvaru<\/strong><\/li>\n<\/ul>\n<p data-start=\"3815\" data-end=\"3921\">Pre odvetvia, ktor\u00e9 vy\u017eaduj\u00fa <strong data-start=\"3840\" data-end=\"3900\">presn\u00e9 tesnenia alebo komponenty s rozmerovou stabilitou<\/strong>, tieto \u00fadaje s\u00fa ve\u013emi d\u00f4le\u017eit\u00e9.<\/p>\n<hr \/>\n<h2 data-start=\"3815\" data-end=\"3921\">V\u00fdber spr\u00e1vneho testera zmr\u0161tenia na testovanie gumy<\/h2>\n<p data-start=\"3987\" data-end=\"4169\">Na str\u00e1nke <a href=\"https:\/\/www.qualitester.com\/sk\/\">Mobiln\u00e9 n\u00e1stroje<\/a>, pon\u00fakame vysoko presn\u00e9 <strong data-start=\"4034\" data-end=\"4054\">tester zmr\u0161tenia<\/strong> ur\u010den\u00e9 pre <strong data-start=\"4068\" data-end=\"4082\">ASTM D2732<\/strong> vr\u00e1tane n\u00e1ro\u010dn\u00fdch vzoriek gumy a elastom\u00e9rov. N\u00e1\u0161 syst\u00e9m poskytuje:<\/p>\n<ul>\n<li data-start=\"4173\" data-end=\"4234\"><strong data-start=\"4173\" data-end=\"4204\">Digit\u00e1lna regul\u00e1cia teploty<\/strong> pre \u00fazku tepeln\u00fa toleranciu<\/li>\n<li data-start=\"4237\" data-end=\"4287\"><strong data-start=\"4237\" data-end=\"4265\">Ponorenie viacer\u00fdch vzoriek<\/strong> pre vysok\u00fa priepustnos\u0165<\/li>\n<li data-start=\"4290\" data-end=\"4360\"><strong data-start=\"4290\" data-end=\"4312\">Odolnos\u0165 vo\u010di chemik\u00e1li\u00e1m<\/strong> materi\u00e1ly kompatibiln\u00e9 s r\u00f4znymi kvapalinami do k\u00fape\u013ea<\/li>\n<li data-start=\"4363\" data-end=\"4425\"><strong data-start=\"4363\" data-end=\"4386\">Volite\u013en\u00e1 automatiz\u00e1cia<\/strong> pre opakovate\u013en\u00e9 a efekt\u00edvne testovanie<\/li>\n<\/ul>\n<p data-start=\"4427\" data-end=\"4578\">Integr\u00e1ciou tohto syst\u00e9mu do laborat\u00f3ria zabezpe\u010d\u00edte, \u017ee ka\u017ed\u00fd gumov\u00fd v\u00fdrobok sp\u013a\u0148a <strong data-start=\"4517\" data-end=\"4545\">v\u00fdkonnostn\u00e9 o\u010dak\u00e1vania<\/strong> a <strong data-start=\"4550\" data-end=\"4577\">regula\u010dn\u00e9 po\u017eiadavky<\/strong>.<\/p>\n<hr \/>\n<h2 data-start=\"4427\" data-end=\"4578\">Pr\u00edklady aplik\u00e1ci\u00ed<\/h2>\n<p><strong data-start=\"4610\" data-end=\"4627\">1. Automobilov\u00fd priemysel<\/strong>: V\u00fdrobcovia tesnen\u00ed pou\u017e\u00edvaj\u00fa testy tepeln\u00e9ho zmr\u0161tenia, aby zabezpe\u010dili, \u017ee sa tesnenia v motorovom priestore nezmr\u0161tia.<br data-start=\"4733\" data-end=\"4736\" \/><strong data-start=\"4736\" data-end=\"4758\">2. Zdravotn\u00edcke pom\u00f4cky<\/strong>: Gumov\u00e9 hadi\u010dky pou\u017e\u00edvan\u00e9 v steriliza\u010dn\u00fdch cykloch si musia po vystaven\u00ed teplu zachova\u0165 svoj tvar.<br data-start=\"4843\" data-end=\"4846\" \/><strong data-start=\"4846\" data-end=\"4869\">3. Priemyseln\u00e9 hadice<\/strong>: Gumov\u00e9 oblo\u017eenie had\u00edc je vystaven\u00e9 tepeln\u00fdm cyklom, pri ktor\u00fdch by mohlo d\u00f4js\u0165 k zmr\u0161teniu alebo prasknutiu.<\/p>\n<p data-start=\"4970\" data-end=\"5064\">Vo v\u0161etk\u00fdch t\u00fdchto scen\u00e1roch sa <a href=\"https:\/\/www.qualitester.com\/sk\/?s=FST-01\"><strong data-start=\"4996\" data-end=\"5016\">tester zmr\u0161tenia<\/strong><\/a> pon\u00faka rozhoduj\u00faci poh\u013ead na stabilitu v\u00fdrobku.<\/p>\n<hr \/>\n<h2 data-start=\"4970\" data-end=\"5064\">Z\u00e1ver<\/h2>\n<p data-start=\"5086\" data-end=\"5464\">Str\u00e1nka <strong data-start=\"5090\" data-end=\"5133\">sk\u00fa\u0161ka tepeln\u00e9ho zmr\u0161\u0165ovania gumov\u00fdch materi\u00e1lov<\/strong> je viac ne\u017e len technick\u00e1 po\u017eiadavka - je to vstupn\u00e1 br\u00e1na k zaisteniu spo\u013eahlivosti, bezpe\u010dnosti a v\u00fdkonu v\u00fdrobkov v prostrediach citliv\u00fdch na teplotu. Z\u00e1kladom je norma ASTM D2732 a <strong data-start=\"5329\" data-end=\"5366\">Tester zmr\u0161tenia Cell Instruments<\/strong> ako n\u00e1stroj, va\u0161e procesy kontroly kvality z\u00edskaj\u00fa merate\u013en\u00e9, konzistentn\u00e9 a pou\u017eite\u013en\u00e9 v\u00fdsledky.<\/p>\n<p data-start=\"5466\" data-end=\"5571\">Pre v\u00fdrobcov, ktor\u00ed uprednost\u0148uj\u00fa <strong data-start=\"5499\" data-end=\"5520\">tepeln\u00e1 integrita<\/strong>, testovanie zmr\u0161tenia nie je volite\u013en\u00e9 - je nevyhnutn\u00e9.<\/p>","protected":false},"excerpt":{"rendered":"<p>0Pri v\u00fdrobe a zabezpe\u010dovan\u00ed kvality v\u00fdrobkov na b\u00e1ze gumy je rozhoduj\u00faca kontrola reakcie materi\u00e1lov na teplo. Sk\u00fa\u0161a\u010dka zmr\u0161tenia zohr\u00e1va k\u013e\u00fa\u010dov\u00fa \u00falohu pri hodnoten\u00ed tepeln\u00fdch vlastnost\u00ed, najm\u00e4 ak sa pou\u017eije na sk\u00fa\u0161ku tepeln\u00e9ho zmr\u0161tenia gumov\u00fdch materi\u00e1lov. Tento proces je nevyhnutn\u00fd nielen na zabezpe\u010denie trvanlivosti v\u00fdrobku, ale aj na splnenie priemyseln\u00fdch noriem ...<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.qualitester.com\/sk\/shrinkage-tester\/\"> <span class=\"screen-reader-text\">Tester zmr\u0161tenia a kritick\u00e1 \u00faloha testovania gumov\u00fdch materi\u00e1lov<\/span> \u010c\u00edtajte viac \"<\/a><\/p>","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-7362","post","type-post","status-publish","format-standard","hentry","category-test-method"],"_links":{"self":[{"href":"https:\/\/www.qualitester.com\/sk\/wp-json\/wp\/v2\/posts\/7362","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.qualitester.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.qualitester.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.qualitester.com\/sk\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.qualitester.com\/sk\/wp-json\/wp\/v2\/comments?post=7362"}],"version-history":[{"count":0,"href":"https:\/\/www.qualitester.com\/sk\/wp-json\/wp\/v2\/posts\/7362\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.qualitester.com\/sk\/wp-json\/wp\/v2\/media?parent=7362"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.qualitester.com\/sk\/wp-json\/wp\/v2\/categories?post=7362"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.qualitester.com\/sk\/wp-json\/wp\/v2\/tags?post=7362"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}