{"id":972,"date":"2025-12-12T00:14:37","date_gmt":"2025-12-12T00:14:37","guid":{"rendered":"https:\/\/www.materialstests.com\/?p=972"},"modified":"2025-12-12T00:17:36","modified_gmt":"2025-12-12T00:17:36","slug":"understanding-pressure-decay-leak-testing","status":"publish","type":"post","link":"https:\/\/www.materialstests.com\/cs\/resources\/understanding-pressure-decay-leak-testing.html","title":{"rendered":"Porozum\u011bn\u00ed testov\u00e1n\u00ed t\u011bsnosti p\u0159i rozpadu tlaku"},"content":{"rendered":"

Testov\u00e1n\u00ed t\u011bsnosti<\/strong><\/a> m\u00e1 z\u00e1sadn\u00ed v\u00fdznam pro odv\u011btv\u00ed, jako je v\u00fdroba plast\u016f, potravin a n\u00e1poj\u016f a ml\u00e9k\u00e1rensk\u00fd pr\u016fmysl, aby se zachovala integrita v\u00fdrobk\u016f v obalu. Je d\u016fle\u017eitou sou\u010d\u00e1st\u00ed jejich procesu kontroly kvality. I nepatrn\u00e9 fyzick\u00e9 poru\u0161en\u00ed obalu, jako jsou net\u011bsnosti nebo praskliny, m\u016f\u017ee zkazit kvalitu v\u00fdrobk\u016f a u\u010dinit je nevhodn\u00fdmi k pou\u017eit\u00ed. Proto je d\u016fle\u017eit\u00e9 pou\u017e\u00edvat vysoce kvalitn\u00ed p\u0159\u00edstroje pro detekci net\u011bsnost\u00ed, kter\u00e9 dok\u00e1\u017e\u00ed v\u010das odhalit net\u011bsnosti a zajistit, aby nebyla ohro\u017eena kvalita obalu. Jakkoli je testov\u00e1n\u00ed t\u011bsnosti d\u016fle\u017eit\u00e9, je nezbytn\u00e9 prov\u00e1d\u011bt testy t\u011bsnosti, ani\u017e by do\u0161lo k po\u0161kozen\u00ed v\u00fdrobku nebo obal\u016f. V\u00fdrobci se v sou\u010dasn\u00e9 dob\u011b spol\u00e9haj\u00ed na nedestruktivn\u00ed techniky detekce net\u011bsnost\u00ed, kter\u00e9 zaji\u0161\u0165uj\u00ed \u00fa\u010dinn\u00e9 testov\u00e1n\u00ed obal\u016f, ani\u017e by do\u0161lo ke znehodnocen\u00ed jejich pou\u017eitelnosti.<\/p>\n\n\n\n

Testov\u00e1n\u00ed pr\u00e1zdn\u00fdch n\u00e1dob na net\u011bsnost a vady je nej\u00fa\u010dinn\u011bj\u0161\u00edm zp\u016fsobem, jak zajistit kvalitu v\u00fdrobku. Pro v\u00fdrobce lahv\u00ed je v\u0161ak nezbytn\u00e9 um\u011bt tyto vady \u00fa\u010dinn\u011b identifikovat. Ide\u00e1ln\u00edm zp\u016fsobem, jak identifikovat vady pr\u00e1zdn\u00fdch n\u00e1dob, je test t\u011bsnosti tlakov\u00fdm rozkladem.<\/p>\n\n\n\n

A\u010dkoli je testov\u00e1n\u00ed rozpadu ve vakuu obl\u00edben\u00e9, nen\u00ed pro pr\u00e1zdn\u00e9 lahve ide\u00e1ln\u00ed. Vakuov\u00fd rozklad m\u016f\u017ee \u010dasto zp\u016fsobit, \u017ee se pr\u00e1zdn\u00e9 l\u00e1hve b\u011bhem testu zhrout\u00ed.<\/p>\n\n\n\n

Testov\u00e1n\u00ed tlakov\u00fdm rozkladem je skv\u011blou alternativou, kter\u00e1 umo\u017e\u0148uje rychl\u00e9 odhalen\u00ed z\u00e1vad. To v\u0161e p\u0159i zachov\u00e1n\u00ed integrity l\u00e1hve po celou dobu testu. V tomto blogu se budeme zab\u00fdvat t\u00edm, co byste m\u011bli v\u011bd\u011bt o odhalov\u00e1n\u00ed net\u011bsnost\u00ed n\u00e1dob pomoc\u00ed testov\u00e1n\u00ed rozpadu tlaku.<\/p>\n\n\n\n

\"Porozum\u011bn\u00ed<\/figure>\n\n\n\n

P\u0159ehled zkou\u0161ek t\u011bsnosti p\u0159i poklesu tlaku<\/h2>\n\n\n\n

A Zkou\u0161ka t\u011bsnosti p\u0159i poklesu tlaku<\/strong><\/a> zahrnuje vyhodnocen\u00ed poklesu tlaku na sn\u00edma\u010di b\u011bhem zkou\u0161ky t\u011bsnosti. P\u0159i t\u00e9to metod\u011b se zkou\u0161en\u00e1 sou\u010d\u00e1st natlakuje (napln\u00ed se vzduchem, dokud nedos\u00e1hne stanoven\u00e9ho tlaku) a pot\u00e9 se odpoj\u00ed od p\u0159\u00edvodn\u00edho tlaku. Pomoc\u00ed sn\u00edma\u010de tlaku se sleduje tlak uvnit\u0159 sou\u010d\u00e1sti. Tlak kles\u00e1 s \u00fanikem vzduchu. Na z\u00e1klad\u011b zm\u011bny tlaku za ur\u010ditou dobu lze pak vypo\u010d\u00edtat m\u00edru \u00faniku.<\/p>\n\n\n\n

Nejv\u011bt\u0161\u00ed v\u00fdhodou tlakov\u00e9 zkou\u0161ky rozpadu je, \u017ee je citliv\u00e1 na velmi mal\u00e9 net\u011bsnosti. Proto je ide\u00e1ln\u00ed volbou pro testov\u00e1n\u00ed t\u011bsnosti v pr\u016fmyslov\u00fdch odv\u011btv\u00edch, jako jsou automobilov\u00e9 komponenty, odlitky, potravin\u00e1\u0159sk\u00e9 a n\u00e1pojov\u00e9 n\u00e1doby. A nejen to, ve srovn\u00e1n\u00ed s ostatn\u00edmi metodami je zkou\u0161ka t\u011bsnosti tlakov\u00fdm rozkladem nejjednodu\u0161\u0161\u00ed z metodik zkou\u0161en\u00ed t\u011bsnosti, a proto je jej\u00ed proveden\u00ed obecn\u011b nejlevn\u011bj\u0161\u00ed. Proto je tato metoda vhodn\u00e1 pro velkoobjemov\u00e1 odv\u011btv\u00ed, kter\u00e1 vy\u017eaduj\u00ed rychl\u00e9 p\u0159esn\u00e9 zkou\u0161ky v r\u00e1mci sv\u00e9ho za\u0159\u00edzen\u00ed, jako jsou n\u00e1pojov\u00e9 n\u00e1doby na ml\u00e9ko, d\u017eusy a dal\u0161\u00ed n\u00e1pojov\u00e9 produkty.<\/p>\n\n\n\n

 <\/h2>\n\n\n\n

Zkou\u0161ka t\u011bsnosti p\u0159i poklesu tlaku: Pro\u010d je ide\u00e1ln\u00ed pro testov\u00e1n\u00ed t\u011bsnosti pr\u00e1zdn\u00fdch n\u00e1dob?<\/h2>\n\n\n\n
\n

Vakuov\u00fd rozklad je sice obl\u00edbenou mo\u017enost\u00ed testov\u00e1n\u00ed t\u011bsnosti, nen\u00ed v\u0161ak ide\u00e1ln\u00ed pro pr\u00e1zdn\u00e9 l\u00e1hve. Tlakov\u00fd rozklad je skv\u011blou alternativou, kter\u00e1 umo\u017e\u0148uje rychlou identifikaci z\u00e1vad p\u0159i zachov\u00e1n\u00ed integrity lahve.<\/p>\n<\/blockquote>\n\n\n\n

 <\/h2>\n\n\n\n

Zkou\u0161ka t\u011bsnosti tlakov\u00fdm rozpadem vs. vakuov\u00fd rozpad<\/h2>\n\n\n\n

Testujete napln\u011bn\u00e9 nebo pr\u00e1zdn\u00e9 n\u00e1doby? Pokud testujete pr\u00e1zdn\u00e9 n\u00e1doby, kter\u00e9 nemus\u00ed b\u00fdt vakuov\u011b ut\u011bsn\u011bn\u00e9, je nejefektivn\u011bj\u0161\u00ed metodou zkou\u0161ka t\u011bsnosti tlakov\u00fdm rozkladem. Tlakov\u00fd rozklad je tak\u00e9 v\u00fdhodn\u00fd v aplikac\u00edch, kde nedostate\u010dn\u00e1 stabilita n\u00e1doby umo\u017e\u0148uje, aby se pr\u00e1zdn\u00e1 n\u00e1doba b\u011bhem testov\u00e1n\u00ed zhroutila.<\/p>\n\n\n\n

Pokud testujete napln\u011bnou n\u00e1dobu nebo n\u00e1dobu, kter\u00e1 vy\u017eaduje vakuov\u00e9 t\u011bsn\u011bn\u00ed, m\u016f\u017ee b\u00fdt nejlep\u0161\u00edm \u0159e\u0161en\u00edm test rozkladu ve vakuu. Zkou\u0161ka rozpadu vakua je nedestruktivn\u00ed zkou\u0161ka, kter\u00e1 odhaluje net\u011bsnosti v nepor\u00e9zn\u00edch, pevn\u00fdch nebo pru\u017en\u00fdch obalech. Tato metoda zaji\u0161\u0165uje, \u017ee obaly, kter\u00e9 obsahuj\u00ed p\u0159edm\u011bty, jako jsou potraviny nebo n\u00e1poje, jsou po napln\u011bn\u00ed a ut\u011bsn\u011bn\u00ed bezpe\u010dn\u00e9 p\u0159ed mo\u017en\u00fdm \u00fanikem z n\u00e1doby.<\/p>\n\n\n\n

 <\/h2>\n\n\n\n

V\u00fdhody volby testov\u00e1n\u00ed t\u011bsnosti on line<\/h2>\n\n\n\n

P\u0159edev\u0161\u00edm, testov\u00e1n\u00ed t\u011bsnosti <\/strong><\/a>zaji\u0161\u0165uje, \u017ee v\u00fdrobky z n\u00e1doby nevyt\u00e9kaj\u00ed. A \u017ee se dovnit\u0159 nedostane kysl\u00edk, vlhkost a dal\u0161\u00ed ne\u010distoty. To zase pom\u00e1h\u00e1 udr\u017eovat kvalitu a integritu v\u00fdrobk\u016f.<\/p>\n\n\n\n

Nejen to, ale n\u00e1\u0161 syst\u00e9m detekce \u00fanik\u016f testuje ka\u017edou l\u00e1hev jako sou\u010d\u00e1st v\u00fdrobn\u00edho procesu. To poskytuje mnohem lep\u0161\u00ed v\u00fdsledky ve srovn\u00e1n\u00ed s n\u00e1hodn\u00fdm v\u00fdb\u011brem vzork\u016f, kter\u00fd nezaru\u010duje odhalen\u00ed z\u00e1vad.<\/p>\n\n\n\n

M\u016f\u017eete tak\u00e9 l\u00e9pe sledovat proces vyfukov\u00e1n\u00ed. Probl\u00e9my s net\u011bsnostmi mohou b\u00fdt v\u010dasn\u00fdm varovn\u00fdm sign\u00e1lem, \u017ee jedno nebo v\u00edce va\u0161ich v\u00fdrobn\u00edch za\u0159\u00edzen\u00ed m\u016f\u017ee b\u00fdt vadn\u00e9 nebo m\u016f\u017ee vy\u017eadovat \u00fadr\u017ebu a servis.<\/p>\n\n\n\n

Tyto v\u00fdhody v\u00e1m spole\u010dn\u011b pomohou ochr\u00e1nit va\u0161e z\u00e1soby a zabr\u00e1nit n\u00e1kladn\u00e9mu vracen\u00ed vadn\u00fdch v\u00fdrobk\u016f.<\/p>\n\n\n\n

 <\/h2>\n\n\n\n

Jak funguje zkou\u0161ka t\u011bsnosti p\u0159i poklesu tlaku?<\/h2>\n\n\n\n

Tlakov\u00e1 zkou\u0161ka t\u011bsnosti se skl\u00e1d\u00e1 ze 3 krok\u016f:<\/p>\n\n\n\n

Napl\u0148te<\/strong> - L\u00e1hev se pln\u00ed na po\u017eadovan\u00fd maxim\u00e1ln\u00ed tlak, kter\u00fd je \u0159\u00edzen elektronick\u00fdm regul\u00e1torem.<\/p>\n\n\n\n

T1<\/strong> - Procentu\u00e1ln\u00ed pokles tlaku se m\u011b\u0159\u00ed po ur\u010ditou dobu. Pot\u00e9, co dos\u00e1hne sv\u00e9ho maxima, se m\u011b\u0159\u00ed jeho v\u00fdkonnost oproti p\u0159edem nastaven\u00e9 hranici.<\/p>\n\n\n\n

T2<\/strong> - Procentu\u00e1ln\u00ed pokles tlaku T1 se m\u011b\u0159\u00ed oproti dal\u0161\u00edmu p\u0159edem nastaven\u00e9mu limitu, \u010d\u00edm\u017e se zajist\u00ed stabilita l\u00e1hve.<\/p>\n\n\n\n

P\u0159i testov\u00e1n\u00ed poklesu tlaku se m\u011b\u0159\u00ed nejen \u0161pi\u010dkov\u00fd tlak, ale tak\u00e9 jeho zm\u011bny v \u010dase. To by mohlo indikovat malou net\u011bsnost, kterou by jednostup\u0148ov\u00e1 zkou\u0161ka poklesu tlaku nemusela zachytit.<\/p>\n\n\n\n

T\u0159i kroky procesu zkou\u0161en\u00ed tlakov\u00e9ho rozkladu.<\/p>\n\n\n\n

\u201cPravidla\u201d pro testov\u00e1n\u00ed rozpadu tlaku<\/h2>\n\n\n\n

P\u0159i zkou\u0161ce tlakov\u00e9ho rozkladu je t\u0159eba m\u00edt na pam\u011bti n\u011bkolik v\u011bc\u00ed:<\/p>\n\n\n\n

Citlivost se zvy\u0161uje s prodlu\u017euj\u00edc\u00ed se dobou testu. \u010c\u00edm d\u00e9le l\u00e1hev testujete, t\u00edm v\u00edce \u010dasu m\u00e1 syst\u00e9m k dispozici pro detekci poklesu tlaku.<\/p>\n\n\n\n

Detekce velikosti otvoru z\u00e1vis\u00ed na citlivosti p\u0159\u00edstroje. Dal\u0161\u00ed rozpad tlaku Tester|\u3001Tov\u00e1rna na testov\u00e1n\u00ed plast\u016f<\/a>mohou vynechat otvory o pr\u016fm\u011bru a\u017e 1 mm (v\u011bt\u0161\u00ed ne\u017e kancel\u00e1\u0159sk\u00e1 sponka). <\/p>\n\n\n\n

Ur\u010dit\u00fd pokles tlaku je norm\u00e1ln\u00ed i u kvalitn\u00edch lahv\u00ed. N\u00e1doby se mohou pod tlakem m\u00edrn\u011b rozt\u00e1hnout, zat\u00edmco se vzduch po natlakov\u00e1n\u00ed stabilizuje.<\/p>\n\n\n\n

Zji\u0161t\u011bn\u00ed net\u011bsnosti u velk\u00fdch lahv\u00ed a kontejner\u016f trv\u00e1 d\u00e9le ne\u017e u men\u0161\u00edch jednotek, a to z d\u016fvodu v\u011bt\u0161\u00edho objemu v\u00fdrobku.<\/p>\n\n\n\n

Je d\u016fle\u017eit\u00e9 sna\u017eit se co nejv\u00edce kontrolovat kol\u00eds\u00e1n\u00ed teploty na lince. To pom\u016f\u017ee zajistit spr\u00e1vnou konzistenci za\u0159\u00edzen\u00ed pro testov\u00e1n\u00ed rozpadu tlaku.<\/p>\n\n\n\n

Testov\u00e1n\u00ed t\u011bsnosti a tlaku: Metody testov\u00e1n\u00ed t\u011bsnosti p\u0159i rozpadu vzduchu<\/h2>\n\n\n\n

Pro tato \u0159e\u0161en\u00ed se pou\u017e\u00edvaj\u00ed standardn\u00ed m\u011b\u0159ic\u00ed p\u0159\u00edstroje pro testov\u00e1n\u00ed t\u011bsnosti, kter\u00e9 zji\u0161\u0165uj\u00ed zm\u011bnu tlaku nebo pr\u016ftoku vzduchu na testovan\u00fdch sou\u010d\u00e1stech.<\/p>\n\n\n\n

P\u0159i porovn\u00e1v\u00e1n\u00ed metod testov\u00e1n\u00ed t\u011bsnosti nab\u00edz\u00ed testov\u00e1n\u00ed rozpadu vzduchu n\u00e1sleduj\u00edc\u00ed mo\u017enosti:<\/p>\n\n\n\n

Zkou\u0161ka t\u011bsnosti p\u0159i p\u0159etlaku (nad 0 bar\u016f)<\/strong><\/p>\n\n\n\n

Nejlevn\u011bj\u0161\u00ed \u0159e\u0161en\u00ed<\/p>\n\n\n\n

Snadno pochopiteln\u00e9 \u00fadaje o v\u00fdsledc\u00edch<\/p>\n\n\n\n

P\u0159\u00edm\u00e9 hodnotov\u00e9 v\u00fdsledky<\/p>\n\n\n\n

P\u0159\u00edm\u00e1 kalibrace<\/p>\n\n\n\n

Proces z\u00e1visl\u00fd na teplot\u011b (alternativn\u00ed zku\u0161ebn\u00ed metodou je zkou\u0161ka ve vakuu)<\/p>\n\n\n\n

Nejl\u00e9pe se pou\u017e\u00edv\u00e1, kdy\u017e je testovan\u00e1 sou\u010d\u00e1st stabiln\u00ed<\/p>\n\n\n\n

P\u0159etlakov\u00e1 zkou\u0161ka t\u011bsnosti je vhodn\u00e1 pro n\u00e1sleduj\u00edc\u00ed aplikace komponent a prost\u0159ed\u00ed:<\/p>\n\n\n\n

Objem a\u017e 3 litry<\/p>\n\n\n\n

Stabiln\u00ed teplotn\u00ed d\u00edly<\/p>\n\n\n\n

P\u0159e\u010dt\u011bte si v\u00edce o na\u0161ich vysokotlak\u00fdch (nad 6 bar\u016f) a n\u00edzkotlak\u00fdch (0-6 bar\u016f) za\u0159\u00edzen\u00edch pro zkou\u0161en\u00ed t\u011bsnosti.<\/p>\n\n\n\n

Net\u011bsnost vakuov\u00e9ho rozpadu vzduchu<\/strong> testov\u00e1n\u00ed (pod 0 bar\u016f)<\/strong><\/p>\n\n\n\n

Nab\u00edz\u00ed robustn\u011bj\u0161\u00ed testov\u00e1n\u00ed t\u011bsnosti<\/p>\n\n\n\n

V\u011bt\u0161\u00ed integrita dat<\/p>\n\n\n\n

Omezuje \u00fa\u010dinky teplotn\u00ed z\u00e1vislosti<\/p>\n\n\n\n

Pom\u00e1h\u00e1 p\u0159i nakl\u00e1d\u00e1n\u00ed t\u011bsn\u011bn\u00ed<\/p>\n\n\n\n

Zkr\u00e1cen\u00ed doby stabilizace<\/p>\n\n\n\n

\u010casto rychlej\u0161\u00ed propustnost<\/p>\n\n\n\n

V\u00fdpo\u010det nep\u0159\u00edm\u00e9ho \u00faniku<\/p>\n\n\n\n

Nab\u00edz\u00ed komplexn\u00ed detekci poruch<\/p>\n\n\n\n

Vakuov\u00e1 zkou\u0161ka t\u011bsnosti je vhodn\u00e1 pro n\u00e1sleduj\u00edc\u00ed aplikace komponent a prost\u0159ed\u00ed:<\/p>\n\n\n\n

Objem a\u017e 5 litr\u016f<\/p>\n\n\n\n

D\u00edly vystaven\u00e9 m\u00edrn\u00e9mu kol\u00eds\u00e1n\u00ed teploty<\/p>\n\n\n\n

P\u0159e\u010dt\u011bte si v\u00edce o na\u0161ich stroj\u00edch pro vakuov\u00e9 testov\u00e1n\u00ed t\u011bsnosti.<\/p>\n\n\n\n

<\/a><\/h3>","protected":false},"excerpt":{"rendered":"

Leak testing is crucial for industries like plastic, food and beverage, and dairy industry to preserve the integrity of products within the package. It is an important part of their quality control process. Even minute physical breaches in a package such as leaks or cracks can spoil quality of products making it unfit for use. Therefore, […]<\/p>","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-972","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.materialstests.com\/cs\/wp-json\/wp\/v2\/posts\/972","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.materialstests.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.materialstests.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.materialstests.com\/cs\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.materialstests.com\/cs\/wp-json\/wp\/v2\/comments?post=972"}],"version-history":[{"count":0,"href":"https:\/\/www.materialstests.com\/cs\/wp-json\/wp\/v2\/posts\/972\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.materialstests.com\/cs\/wp-json\/wp\/v2\/media?parent=972"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.materialstests.com\/cs\/wp-json\/wp\/v2\/categories?post=972"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.materialstests.com\/cs\/wp-json\/wp\/v2\/tags?post=972"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}