{"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\/lt\/shrinkage-tester\/","title":{"rendered":"Susitraukimo testeris ir lemiamas gumos med\u017eiag\u0173 bandym\u0173 vaidmuo"},"content":{"rendered":"<p data-start=\"304\" data-end=\"711\"><a href=\"https:\/\/www.qualitester.com\/lt\/?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=\"susitraukimo testeris\" 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>0 Gaminant ir u\u017etikrinant gumos gamini\u0173 kokyb\u0119, labai svarbu kontroliuoti med\u017eiag\u0173 reakcij\u0105 \u012f \u0161ilum\u0105. Svetain\u0117je . <strong data-start=\"431\" data-end=\"451\">susitraukimo testeris<\/strong> atlieka pagrindin\u012f vaidmen\u012f vertinant \u0161ilumines charakteristikas, ypa\u010d kai jos taikomos <strong data-start=\"539\" data-end=\"582\">gumini\u0173 med\u017eiag\u0173 terminio susitraukimo bandymas<\/strong>. \u0160is procesas yra labai svarbus ne tik siekiant u\u017etikrinti gaminio ilgaam\u017ei\u0161kum\u0105, bet ir atitikti pramon\u0117s standartus, pvz. <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\">Gumos med\u017eiag\u0173 susitraukimo kar\u0161\u010diu bandymas: Raktas \u012f termin\u012f patikimum\u0105<\/h2>\n<p data-start=\"792\" data-end=\"1164\">Gumos med\u017eiagos pla\u010diai naudojamos svarbiausiose srityse, pvz. <strong data-start=\"861\" data-end=\"936\">automobili\u0173 sandarikliai, elektros izoliacija, vamzd\u017eiai ir pramonin\u0117s tarpin\u0117s.<\/strong>. \u0160ie komponentai da\u017enai susiduria su auk\u0161tesn\u0117mis temperat\u016bromis perdirbimo ar galutinio naudojimo metu. Gamybos metu atsirad\u0119 liekamieji \u012ftempiai gali sukelti nepageidaujam\u0173 <strong data-start=\"1085\" data-end=\"1113\">susitraukimas arba deformacija<\/strong>, d\u0117l ko produktas gali sugesti, jei n\u0117ra anksti aptinkamas.<\/p>\n<p data-start=\"1166\" data-end=\"1298\">\u010cia <strong data-start=\"1184\" data-end=\"1227\">gumini\u0173 med\u017eiag\u0173 terminio susitraukimo bandymas<\/strong> tampa nepakei\u010diamas. Naudodami susitraukimo tester\u012f gamintojai gali:<\/p>\n<ul>\n<li data-start=\"1302\" data-end=\"1382\">Aptikti <strong data-start=\"1309\" data-end=\"1330\">vidiniai \u012ftempiai<\/strong> atsirandantys d\u0117l ekstruzijos, liejimo ar kalendoriaus<\/li>\n<li data-start=\"1385\" data-end=\"1456\">\u012evertinkite <strong data-start=\"1396\" data-end=\"1421\">matmen\u0173 stabilumas<\/strong> gumos terminio poveikio<\/li>\n<li data-start=\"1459\" data-end=\"1516\">Optimizuokite <strong data-start=\"1468\" data-end=\"1493\">med\u017eiag\u0173 sud\u0117tis<\/strong> ir kietinimo procesai<\/li>\n<li data-start=\"1519\" data-end=\"1568\">Monitorius <strong data-start=\"1527\" data-end=\"1550\">kokyb\u0117s nuoseklumas<\/strong> gamybos metu<\/li>\n<\/ul>\n<p data-start=\"1570\" data-end=\"1700\">\u0160ios elgsenos supratimas prie\u0161 gaminiui patenkant \u012f rink\u0105 padeda u\u017etikrinti, kad <strong data-start=\"1649\" data-end=\"1699\">na\u0161umas, sauga ir klient\u0173 pasitenkinimas.<\/strong>.<\/p>\n<hr \/>\n<h2 data-start=\"1570\" data-end=\"1700\">Kaip ASTM D2732 padeda atlikti tikslius bandymus<\/h2>\n<p data-start=\"1752\" data-end=\"2019\">Svetain\u0117 <strong data-start=\"1756\" data-end=\"1770\">ASTM D2732<\/strong> standarte apra\u0161yta vertinimo proced\u016bra <strong data-start=\"1818\" data-end=\"1859\">nesuvar\u017eytas linijinis terminis susitraukimas<\/strong> plastikini\u0173 ir gumini\u0173 pl\u0117veli\u0173. Tai apima i\u0161 anksto supjaustyt\u0173 bandini\u0173 panardinim\u0105 \u012f <strong data-start=\"1932\" data-end=\"1970\">kontroliuojamos temperat\u016bros skys\u010dio vonia<\/strong> ir matuojant dyd\u017eio pokyt\u012f po poveikio.<\/p>\n<p data-start=\"2021\" data-end=\"2322\">Nors ASTM D2732 i\u0161 prad\u017ei\u0173 buvo sukurtas termoplastin\u0117ms pl\u0117vel\u0117ms, jis taip pat taikomas <strong data-start=\"2105\" data-end=\"2125\">gumos med\u017eiagos<\/strong> su pl\u0117vel\u0117s tipo geometrija arba plon\u0173 lak\u0161t\u0173 konfig\u016bracijomis. Bandymas imituoja realias s\u0105lygas, kai pakuojant, sterilizuojant ar naudojant gumos komponentus gali b\u016bti padid\u0117jusi temperat\u016bra.<\/p>\n<hr \/>\n<h2 data-start=\"2021\" data-end=\"2322\">Bandymo proced\u016bros ap\u017evalga<\/h2>\n<p data-start=\"2364\" data-end=\"2446\">Naudojant <strong data-start=\"2372\" data-end=\"2392\">susitraukimo testeris<\/strong> pagal ASTM D2732 standart\u0105 atliekami \u0161ie veiksmai:<\/p>\n<p><strong data-start=\"2448\" data-end=\"2473\">1. M\u0117ginio paruo\u0161imas<\/strong><br data-start=\"2473\" data-end=\"2476\" \/>Gumin\u0119 pl\u0117vel\u0119 ar lak\u0161t\u0105 supjaustykite \u012f <strong data-start=\"2512\" data-end=\"2533\">100\u00d7100 mm kvadratas<\/strong>, naudodami antspauduot\u0105 \u0161ablon\u0105. U\u017etikrinkite, kad <strong data-start=\"2572\" data-end=\"2593\">ma\u0161inos kryptis<\/strong> pa\u017eym\u0117ta.<\/p>\n<p><strong data-start=\"2606\" data-end=\"2625\">2. Kondicionavimas<\/strong><br data-start=\"2625\" data-end=\"2628\" \/>M\u0117ginys kondicionuojamas pagal <strong data-start=\"2662\" data-end=\"2675\">ASTM D618<\/strong> temperat\u016bros ir dr\u0117gm\u0117s poveikiui stabilizuoti.<\/p>\n<p><strong data-start=\"2724\" data-end=\"2741\">3. Bandym\u0173 s\u0105ranka<\/strong><\/p>\n<ul>\n<li data-start=\"2746\" data-end=\"2841\">U\u017epildykite testerio vonel\u0119 suderinamu skys\u010diu, pvz. <strong data-start=\"2799\" data-end=\"2811\">glicerinas<\/strong> arba <strong data-start=\"2815\" data-end=\"2838\">polietileno glikolis<\/strong>.<\/li>\n<li data-start=\"2844\" data-end=\"2938\">Nustatykite temperat\u016br\u0105 (gumos atveju paprastai 100-150 \u00b0C) ir leiskite jai stabilizuotis \u00b10,5 \u00b0C ribose.<\/li>\n<\/ul>\n<p><strong data-start=\"2940\" data-end=\"2980\">4. Panardinimo ir susitraukimo matavimas<\/strong><\/p>\n<ul>\n<li data-start=\"2985\" data-end=\"3023\">\u012emerkite m\u0117gin\u012f 10 sekund\u017ei\u0173.<\/li>\n<li data-start=\"3026\" data-end=\"3083\">I\u0161 karto po nu\u0117mimo i\u0161matuokite ilg\u012f ir plot\u012f.<\/li>\n<li data-start=\"3086\" data-end=\"3114\">Apskai\u010diuokite susitraukim\u0105 naudodami:<\/li>\n<\/ul>\n<p style=\"text-align: center;\" data-start=\"3117\" data-end=\"3174\"><strong data-start=\"3117\" data-end=\"3174\">Susitraukimas (%) = [(pradinis - galutinis) \/ pradinis] \u00d7 100<\/strong><\/p>\n<p><strong data-start=\"3176\" data-end=\"3206\">5. Pakartojimas siekiant tikslumo<\/strong><br data-start=\"3206\" data-end=\"3209\" \/>Bent jau <strong data-start=\"3218\" data-end=\"3251\">du pavyzd\u017eiai kiekvienai temperat\u016brai<\/strong> tur\u0117t\u0173 b\u016bti tikrinamas, kad b\u016bt\u0173 u\u017etikrintas nuoseklumas ir pakartojamumas.<\/p>\n<hr \/>\n<h2 data-start=\"3176\" data-end=\"3309\">Kod\u0117l \u0161is bandymas yra labai svarbus gumos med\u017eiagoms<\/h2>\n<p data-start=\"3367\" data-end=\"3618\">Skirtingai nei plastikin\u0117s pl\u0117vel\u0117s, gumin\u0117s med\u017eiagos da\u017enai apima <strong data-start=\"3420\" data-end=\"3470\">u\u017epildai, plastifikatoriai ir skersinio ry\u0161io med\u017eiagos<\/strong> kurie gali tur\u0117ti \u012ftakos \u0161iluminei elgsenai. \u0160iluminio susitraukimo bandymas ai\u0161kiai parodo, kaip \u0161ie komponentai s\u0105veikauja \u0161ilumin\u0117mis s\u0105lygomis.<\/p>\n<p data-start=\"3620\" data-end=\"3655\">Pagrindin\u0117s testo \u012f\u017evalgos:<\/p>\n<ul>\n<li data-start=\"3659\" data-end=\"3702\"><strong data-start=\"3659\" data-end=\"3678\">V\u0117lyvinimo vienodumas<\/strong> ir skersinio ry\u0161io tankis<\/li>\n<li data-start=\"3705\" data-end=\"3733\"><strong data-start=\"3705\" data-end=\"3722\">Terminis sen\u0117jimas<\/strong> elgesys<\/li>\n<li data-start=\"3736\" data-end=\"3781\">Jautrumas <strong data-start=\"3754\" data-end=\"3779\">susirauk\u0161l\u0117jimas arba i\u0161linkimas<\/strong><\/li>\n<li data-start=\"3784\" data-end=\"3813\">Ilgalaikis <strong data-start=\"3794\" data-end=\"3813\">formos i\u0161laikymas<\/strong><\/li>\n<\/ul>\n<p data-start=\"3815\" data-end=\"3921\">Pramon\u0117s \u0161akoms, kurioms reikia <strong data-start=\"3840\" data-end=\"3900\">tiksl\u016bs sandarikliai arba komponentai, kuri\u0173 matmenys yra stabil\u016bs.<\/strong>, \u0161ie duomenys yra labai svarb\u016bs.<\/p>\n<hr \/>\n<h2 data-start=\"3815\" data-end=\"3921\">Tinkamo susitraukimo testerio gumos bandymams pasirinkimas<\/h2>\n<p data-start=\"3987\" data-end=\"4169\">Svetain\u0117je <a href=\"https:\/\/www.qualitester.com\/lt\/\">\"Cell Instruments<\/a>, si\u016blome didelio tikslumo <strong data-start=\"4034\" data-end=\"4054\">susitraukimo testeris<\/strong> skirtas <strong data-start=\"4068\" data-end=\"4082\">ASTM D2732<\/strong> \u012fskaitant sud\u0117tingus gumos ir elastomer\u0173 bandinius. M\u016bs\u0173 sistema u\u017etikrina:<\/p>\n<ul>\n<li data-start=\"4173\" data-end=\"4234\"><strong data-start=\"4173\" data-end=\"4204\">Skaitmeninis temperat\u016bros valdymas<\/strong> d\u0117l ma\u017eos \u0161ilumin\u0117s tolerancijos<\/li>\n<li data-start=\"4237\" data-end=\"4287\"><strong data-start=\"4237\" data-end=\"4265\">Daugelio bandini\u0173 panardinimas<\/strong> didelio na\u0161umo<\/li>\n<li data-start=\"4290\" data-end=\"4360\"><strong data-start=\"4290\" data-end=\"4312\">Chemin\u0117ms med\u017eiagoms atsparus<\/strong> med\u017eiagos, suderinamos su \u012fvairiais vonios skys\u010diais<\/li>\n<li data-start=\"4363\" data-end=\"4425\"><strong data-start=\"4363\" data-end=\"4386\">Pasirenkamas automatizavimas<\/strong> Pakartojamam ir veiksmingam testavimui.<\/li>\n<\/ul>\n<p data-start=\"4427\" data-end=\"4578\">Integrav\u0119 \u0161i\u0105 sistem\u0105 \u012f savo laboratorij\u0105, u\u017etikrinsite, kad kiekvienas gumos gaminys atitikt\u0173 <strong data-start=\"4517\" data-end=\"4545\">veiklos l\u016bkes\u010diai<\/strong> ir <strong data-start=\"4550\" data-end=\"4577\">norminiai reikalavimai<\/strong>.<\/p>\n<hr \/>\n<h2 data-start=\"4427\" data-end=\"4578\">Taikymo pavyzd\u017eiai<\/h2>\n<p><strong data-start=\"4610\" data-end=\"4627\">1. Automobiliai<\/strong>: Tarpikli\u0173 gamintojai atlieka terminio susitraukimo bandymus, kad u\u017etikrint\u0173, jog sandarikliai variklio skyriuje nesusitraukt\u0173.<br data-start=\"4733\" data-end=\"4736\" \/><strong data-start=\"4736\" data-end=\"4758\">2. Medicinos prietaisai<\/strong>: Sterilizacijos cikluose naudojami guminiai vamzdeliai turi i\u0161laikyti form\u0105 po kar\u0161\u010dio poveikio.<br data-start=\"4843\" data-end=\"4846\" \/><strong data-start=\"4846\" data-end=\"4869\">3. Pramonin\u0117s \u017earnos<\/strong>: Guminiai \u017earn\u0173 \u012fd\u0117klai patiria \u0161ilumin\u012f cikl\u0105, d\u0117l kurio susitraukimo gali atsirasti nesandarum\u0173 arba ply\u0161im\u0173.<\/p>\n<p data-start=\"4970\" data-end=\"5064\">Pagal visus \u0161iuos scenarijus <a href=\"https:\/\/www.qualitester.com\/lt\/?s=FST-01\"><strong data-start=\"4996\" data-end=\"5016\">susitraukimo testeris<\/strong><\/a> suteikia labai svarbios informacijos apie produkto stabilum\u0105.<\/p>\n<hr \/>\n<h2 data-start=\"4970\" data-end=\"5064\">I\u0161vada<\/h2>\n<p data-start=\"5086\" data-end=\"5464\">Svetain\u0117 <strong data-start=\"5090\" data-end=\"5133\">gumini\u0173 med\u017eiag\u0173 terminio susitraukimo bandymas<\/strong> tai daugiau nei techninis reikalavimas - tai vartai, padedantys u\u017etikrinti gamini\u0173 patikimum\u0105, saug\u0105 ir veikim\u0105 jautrioje temperat\u016brai aplinkoje. ASTM D2732 yra pagrindas ir <strong data-start=\"5329\" data-end=\"5366\">\"Cell Instruments\" susitraukimo testeris<\/strong> kaip \u012frankis, j\u016bs\u0173 kokyb\u0117s kontrol\u0117s procesai gaus i\u0161matuojamus, nuoseklius ir \u012fgyvendinamus rezultatus.<\/p>\n<p data-start=\"5466\" data-end=\"5571\">Gamintojams, kurie teikia pirmenyb\u0119 <strong data-start=\"5499\" data-end=\"5520\">\u0161iluminis vientisumas<\/strong>, susitraukimo bandymas n\u0117ra neprivalomas - jis b\u016btinas.<\/p>","protected":false},"excerpt":{"rendered":"<p>0 Gaminant ir u\u017etikrinant gumos gamini\u0173 kokyb\u0119, labai svarbu kontroliuoti med\u017eiag\u0173 reakcij\u0105 \u012f \u0161ilum\u0105. Susitraukimo testeriui tenka pagrindinis vaidmuo vertinant \u0161ilumines charakteristikas, ypa\u010d kai jis taikomas gumini\u0173 med\u017eiag\u0173 terminiam susitraukimo bandymui. \u0160is procesas yra labai svarbus ne tik siekiant u\u017etikrinti gamini\u0173 ilgaam\u017ei\u0161kum\u0105, bet ir atitikti pramon\u0117s standartus ...<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.qualitester.com\/lt\/shrinkage-tester\/\"> <span class=\"screen-reader-text\">Susitraukimo testeris ir lemiamas gumos med\u017eiag\u0173 bandym\u0173 vaidmuo<\/span> Skaityti daugiau \"<\/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\/lt\/wp-json\/wp\/v2\/posts\/7362","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.qualitester.com\/lt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.qualitester.com\/lt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.qualitester.com\/lt\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.qualitester.com\/lt\/wp-json\/wp\/v2\/comments?post=7362"}],"version-history":[{"count":0,"href":"https:\/\/www.qualitester.com\/lt\/wp-json\/wp\/v2\/posts\/7362\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.qualitester.com\/lt\/wp-json\/wp\/v2\/media?parent=7362"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.qualitester.com\/lt\/wp-json\/wp\/v2\/categories?post=7362"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.qualitester.com\/lt\/wp-json\/wp\/v2\/tags?post=7362"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}