The pevnos\u0165 gumy v roztrhnut\u00ed<\/strong> ud\u00e1va, ako \u00fa\u010dinne materi\u00e1l odol\u00e1va vzniku alebo \u0161\u00edreniu trhliny. Zatia\u013e \u010do pevnos\u0165 v \u0165ahu meria celkov\u00fa schopnos\u0165 natiahnutia, pevnos\u0165 v roztrhnut\u00ed sa zameriava na sp\u00f4soby por\u00fach v re\u00e1lnom svete<\/em>. Ostr\u00e9 hrany, cyklick\u00e9 za\u0165a\u017eenie, odieranie alebo usaden\u00e9 \u010dastice \u010dasto sp\u00f4sobuj\u00fa lok\u00e1lne nap\u00e4tia, ktor\u00e9 sp\u00f4sobuj\u00fa, \u017ee naj\u010dastej\u0161\u00edm mechanizmom po\u0161kodenia v prev\u00e1dzke je roztrhnutie.<\/p>\n\n\n\n V\u00fdkonnos\u0165 pri trhan\u00ed ovplyv\u0148uje nieko\u013eko faktorov vr\u00e1tane rozlo\u017eenia nap\u00e4tia, r\u00fdchlosti deform\u00e1cie, geometrie vzorky a pr\u00edtomnosti z\u00e1rezov. Norma ASTM D624 poskytuje kontrolovan\u00fa a opakovate\u013en\u00fa met\u00f3du na kvantifik\u00e1ciu t\u00fdchto vplyvov, ktor\u00e1 umo\u017e\u0148uje in\u017einierom a odborn\u00edkom na kontrolu kvality vykon\u00e1va\u0165 spo\u013eahliv\u00e9 porovnania.<\/p>\n\n\n\n The norma na sk\u00fa\u0161ku pevnosti v roztrhnut\u00ed<\/strong> \u0161pecifikuje postupy pr\u00edpravy vzoriek, ich kondicionovania a postupn\u00e9ho zvy\u0161ovania za\u0165a\u017eenia a\u017e do \u00fapln\u00e9ho roztrhnutia. \u0164ahov\u00fd tester \u0165ah\u00e1 vzorku pri definovanej r\u00fdchlosti kr\u00ed\u017eovej hlavy. Zaznamenan\u00e1 sila na jednotku hr\u00fabky predstavuje pevnos\u0165 v pretrhnut\u00ed.<\/p>\n\n\n\n Pod\u013ea normy:<\/p>\n\n\n\n Tieto rozdiely umo\u017e\u0148uj\u00fa pou\u017e\u00edvate\u013eom prisp\u00f4sobi\u0165 testovanie konkr\u00e9tnym podmienkam v\u00fdrobku.<\/p>\n\n\n\n Norma ASTM D624 obsahuje nieko\u013eko typov vzoriek, z ktor\u00fdch ka\u017ed\u00e1 zachyt\u00e1va in\u00e9 spr\u00e1vanie pri poruche. Tieto varianty \u00fazko s\u00favisia s r\u00f4znymi aplik\u00e1ciami elastom\u00e9rov.<\/p>\n\n\n\n ASTM D624 typ A<\/strong> podob\u00e1 sa typu B, ale bez pred\u013a\u017een\u00fdch koncov z\u00e1lo\u017eiek. Laborat\u00f3ri\u00e1 pou\u017e\u00edvaj\u00fa typ A, ke\u010f pracuj\u00fa s men\u0161\u00edmi lisovan\u00fdmi komponentmi alebo s obmedzen\u00fdmi mno\u017estvami materi\u00e1lu. Meria aj \u0161\u00edrenie trhl\u00edn, ale m\u00f4\u017ee vykazova\u0165 mierne odli\u0161n\u00e9 rozlo\u017eenie nap\u00e4tia kv\u00f4li krat\u0161ej d\u013a\u017eke meradla.<\/p>\n\n\n\n ASTM D624 typ B<\/strong> je jednou z naj\u010dastej\u0161ie preferovan\u00fdch geometri\u00ed. Je vybaven\u00e1 polmesiacom s pred\u013a\u017een\u00fdmi v\u00fdstupkami, ktor\u00e9 zlep\u0161uj\u00fa stabilitu pri uchopen\u00ed. Tento typ meria pevnos\u0165 pri \u0161\u00edren\u00ed trhl\u00edn<\/strong>, tak\u017ee je ide\u00e1lny na v\u0161eobecn\u00fa kontrolu kvality gumy. V\u00fdrobcovia \u010dasto volia typ B, ke\u010f je p\u00f4vodn\u00fd list dostato\u010dne ve\u013ek\u00fd na pr\u00edpravu po\u017eadovan\u00fdch rozmerov.<\/p>\n\n\n\n ASTM D624 typ C<\/strong> m\u00e1 v\u00fdrazn\u00fd 90-stup\u0148ov\u00fd uhol bez z\u00e1rezu. Koncentr\u00e1cia nap\u00e4tia na vrchole pom\u00e1ha vyhodnoti\u0165 inicia\u010dn\u00e1 pevnos\u0165 pri roztrhnut\u00ed<\/strong>, \u010do je rozhoduj\u00face pri posudzovan\u00ed por\u00fach sp\u00f4soben\u00fdch ostr\u00fdmi rohmi alebo zabudovan\u00fdmi chybami. Ak trhlina neza\u010d\u00edna na vrchole, v\u00fdsledky m\u00f4\u017eu pripom\u00edna\u0165 pevnos\u0165 v \u0165ahu, preto je nevyhnutn\u00e1 spr\u00e1vna pr\u00edprava vzorky.<\/p>\n\n\n\n ASTM D624 Typ T<\/strong> pozost\u00e1va z geometrie rozdelenej nohy pripom\u00ednaj\u00facej tvar nohav\u00edc. Meria \u0161\u00edrenie trhliny po d\u013a\u017eke vzorky. Typ T sa be\u017ene pou\u017e\u00edva pre pru\u017en\u00e9 elastom\u00e9rov\u00e9 f\u00f3lie, tenk\u00e9 f\u00f3lie a m\u00e4kk\u00e9 TPE zmesi.<\/p>\n\n\n\n ASTM D624 Typ CP<\/strong> je modifik\u00e1cia typu T. Pou\u017e\u00edva obmedzen\u00e1 dr\u00e1ha trhania<\/strong> a hrub\u0161ie nohy, ktor\u00e9 zabezpe\u010duj\u00fa, \u017ee trhlina zostane zarovnan\u00e1, \u010do je obzvl\u00e1\u0161\u0165 vhodn\u00e9 pre materi\u00e1ly n\u00e1chyln\u00e9 na odch\u00fdlky alebo nadmern\u00e9 roztiahnutie. To vedie k stabilnej\u0161\u00edm a opakovate\u013enej\u0161\u00edm v\u00fdsledkom \u0161\u00edrenia.<\/p>\n\n\n\n V\u00fdber vhodn\u00e9ho tester pevnosti v \u0165ahu<\/strong> zabezpe\u010duje presn\u00e9 a konzistentn\u00e9 v\u00fdsledky. Tester mus\u00ed udr\u017eiava\u0165 stabiln\u00e9 r\u00fdchlosti kr\u00ed\u017eovej hlavy, poskytova\u0165 citliv\u00e9 meranie sily a podporova\u0165 r\u00f4zne konfigur\u00e1cie uchopenia.<\/p>\n\n\n\n The Cell Instruments TST-01 Tester \u0165ahu<\/strong> je vynikaj\u00facou vo\u013ebou pre testovanie pod\u013ea normy ASTM D624 v\u010faka svojej:<\/p>\n\n\n\n Jeho schopnos\u0165 prep\u00edna\u0165 medzi r\u00f4znymi re\u017eimami roztrhnutia umo\u017e\u0148uje laborat\u00f3ri\u00e1m vykona\u0165 cel\u00fd rozsah testov pod\u013ea normy ASTM D624 pomocou jedn\u00e9ho zariadenia.<\/p>\n\n\n\n ASTM D624<\/a> poskytuje komplexn\u00fd r\u00e1mec na hodnotenie spr\u00e1vania sa v\u00fdrobkov z gumy a TPE pri roztrhnut\u00ed. Viacer\u00e9 typy vzoriek umo\u017e\u0148uj\u00fa pou\u017e\u00edvate\u013eom zachyti\u0165 vznik a \u0161\u00edrenie trhl\u00edn v r\u00f4znych aplik\u00e1ci\u00e1ch. Pomocou spo\u013eahliv\u00fdch pr\u00edstrojov, ako napr. Tester \u0165ahu TST-01<\/a><\/strong>, m\u00f4\u017eu laborat\u00f3ri\u00e1 dosiahnu\u0165 konzistentn\u00e9, presn\u00e9 a opakovate\u013en\u00e9 v\u00fdsledky, ktor\u00e9 zvy\u0161uj\u00fa kvalitu v\u00fdrobkov a posil\u0148uj\u00fa rozhodnutia v oblasti materi\u00e1lov\u00e9ho in\u017einierstva. Pre v\u00fdrobcov a pracovn\u00edkov zodpovedn\u00fdch za kvalitu, ktor\u00ed h\u013eadaj\u00fa spo\u013eahliv\u00e9 hodnotenie trhl\u00edn, zost\u00e1va norma ASTM D624 nepostr\u00e1date\u013enou.<\/p>\n\n\n\n <\/p>","protected":false},"featured_media":8078,"parent":0,"template":"","meta":{"_acf_changed":true,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","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":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}}},"class_list":["post-9864","standard","type-standard","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packqc.com\/sk\/wp-json\/wp\/v2\/standard\/9864","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/sk\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packqc.com\/sk\/wp-json\/wp\/v2\/types\/standard"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/sk\/wp-json\/wp\/v2\/media\/8078"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/sk\/wp-json\/wp\/v2\/media?parent=9864"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\u0160tandardn\u00e9 po\u017eiadavky na sk\u00fa\u0161ku pevnosti v \u0165ahu<\/h2>\n\n\n\n
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ASTM D624 Typ A, Typ B, Typ C, Typ T a Typ CP<\/h2>\n\n\n\n
ASTM D624 typ A - polmesiac pre men\u0161ie vzorky<\/h3>\n\n\n\n
ASTM D624 typ B - polmesiac s v\u00fdstupkami<\/h3>\n\n\n\n
ASTM D624 typ C - vzorka s 90-stup\u0148ov\u00fdm vrcholom<\/h3>\n\n\n\n
ASTM D624 Typ T - Vzorka na roztrhnutie nohav\u00edc<\/h3>\n\n\n\n
ASTM D624 Typ CP - Trhanie s obmedzenou dr\u00e1hou<\/h3>\n\n\n\n
V\u00fdber spr\u00e1vneho testera pevnosti v \u0165ahu<\/h2>\n\n\n\n
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Kontaktujte n\u00e1s Z\u00edskajte rie\u0161enie na testovanie pod\u013ea normy ASTM D624 <\/h2>\n\n\n\n