{"id":19040,"date":"2026-08-10T02:04:48","date_gmt":"2026-08-10T02:04:48","guid":{"rendered":"https:\/\/tuohaihardware.com\/?p=19040"},"modified":"2026-09-26T08:20:44","modified_gmt":"2026-09-26T08:20:44","slug":"co-jsou-metody-tahovych-zkousek-vysledky-a-hardwarove-aplikace","status":"publish","type":"post","link":"https:\/\/tuohaihardware.com\/cs\/what-is-tensile-testing-methods-results-and-hardware-applications\/","title":{"rendered":"Co je to tahov\u00e9 testov\u00e1n\u00ed? Metody, v\u00fdsledky a hardwarov\u00e9 aplikace"},"content":{"rendered":"<p><!-- WordPress Title: What Is Tensile Testing? Methods, Results, and Hardware Applications --><\/p>\n<p>P\u0159i n\u00e1kupu \u0159et\u011bz\u016f, pru\u017ein nebo jin\u00e9ho kovov\u00e9ho p\u0159\u00edslu\u0161enstv\u00ed mnoho kupuj\u00edc\u00edch \u017e\u00e1d\u00e1 dodavatele o v\u00fdsledky tahov\u00fdch zkou\u0161ek. Tahov\u00e9 zkou\u0161ky mohou m\u011b\u0159it vlastnosti materi\u00e1lu a uk\u00e1zat, jak se hotov\u00fd v\u00fdrobek chov\u00e1 p\u0159i ta\u017en\u00e9 s\u00edle. Zkou\u0161ky materi\u00e1l\u016f a zkou\u0161ky hotov\u00fdch v\u00fdrobk\u016f v\u0161ak pou\u017e\u00edvaj\u00ed r\u016fzn\u00e9 metody a jejich v\u00fdsledky znamenaj\u00ed r\u016fzn\u00e9 v\u011bci. Tento \u010dl\u00e1nek vysv\u011btluje, co jsou tahov\u00e9 zkou\u0161ky, jak se prov\u00e1d\u011bj\u00ed a jak byste m\u011bli ch\u00e1pat jejich pou\u017eit\u00ed pro \u0159et\u011bzy, pru\u017einy, h\u00e1ky, spojovac\u00ed \u010dl\u00e1nky a dal\u0161\u00ed kovov\u00e9 v\u00fdrobky.<\/p>\n<div style=\"background: #f7f7f7; border-left: 4px solid #333333; padding: 16px 18px; margin: 20px 0;\">\n<p style=\"margin: 0;\"><strong>Stru\u010dn\u00e1 definice:<\/strong> Zkou\u0161ka tahem, b\u011b\u017en\u011b naz\u00fdvan\u00e1 tak\u00e9 zkou\u0161ka tahem, aplikuje na vzorek materi\u00e1lu nebo hotov\u00fd v\u00fdrobek \u0159\u00edzenou ta\u017enou s\u00edlu. Ukazuje, jak pevn\u00fd je vzorek, jak daleko se natahuje, zda m\u011bn\u00ed tvar a kdy se poru\u0161\u00ed. V n\u011bkter\u00fdch aplikac\u00edch se tak\u00e9 pou\u017e\u00edvaj\u00ed souvisej\u00edc\u00ed term\u00edny, jako je zkou\u0161ka tahem nebo zkou\u0161ka tahem.<\/p>\n<\/div>\n<h2>Co je to zkou\u0161ka tahem?<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19044\" src=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/08\/What-Is-Tensile-Testing-Methods-Results-and-Hardware-Applications.jpg\" alt=\"Co je to tahov\u00e9 testov\u00e1n\u00ed? Metody, v\u00fdsledky a hardwarov\u00e9 aplikace\" width=\"1200\" height=\"700\" srcset=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/08\/What-Is-Tensile-Testing-Methods-Results-and-Hardware-Applications.jpg 1200w, https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/08\/What-Is-Tensile-Testing-Methods-Results-and-Hardware-Applications-768x448.jpg 768w, https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/08\/What-Is-Tensile-Testing-Methods-Results-and-Hardware-Applications-18x12.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<p>Zkou\u0161ka tahem je zp\u016fsob, jak ov\u011b\u0159it, jak se materi\u00e1l nebo v\u00fdrobek chov\u00e1 p\u0159i tah\u00e1n\u00ed. Zkou\u0161ka v\u00e1m m\u016f\u017ee uk\u00e1zat, jak pevn\u00fd je materi\u00e1l a jak moc se m\u016f\u017ee prot\u00e1hnout. M\u016f\u017ee tak\u00e9 uk\u00e1zat, zda hotov\u00fd v\u00fdrobek zm\u011bn\u00ed tvar pod danou silou a jak velk\u00e1 s\u00edla zp\u016fsob\u00ed jeho selh\u00e1n\u00ed.<\/p>\n<p>P\u0159i zkou\u0161en\u00ed oceli nebo dr\u00e1tu m\u011b\u0159\u00ed zkou\u0161ka tahem hlavn\u011b vlastnosti materi\u00e1lu, jako je mez kluzu, pevnost v tahu a prodlou\u017een\u00ed. U hotov\u00e9ho v\u00fdrobku, jako je <a href=\"https:\/\/tuohaihardware.com\/cs\/ocelovy-retez\/\">sva\u0159ovan\u00fd \u0159et\u011bz<\/a>, <a href=\"https:\/\/tuohaihardware.com\/cs\/nesvarovany-retez\/\">nesva\u0159ovan\u00fd \u0159et\u011bz<\/a>, ta\u017en\u00e1 pru\u017eina, S-h\u00e1k, rychloup\u00ednac\u00ed \u010dl\u00e1nek nebo dr\u00e1t\u011bn\u00fd tvar (sou\u010d\u00e1st ohnut\u00e1 z dr\u00e1tu), v\u00fdsledek odr\u00e1\u017e\u00ed kombinovan\u00e9 \u00fa\u010dinky materi\u00e1lu, rozm\u011br\u016f, sva\u0159ov\u00e1n\u00ed, tv\u00e1\u0159en\u00ed a tepeln\u00e9ho zpracov\u00e1n\u00ed.<\/p>\n<p>Tyto dva typy v\u00fdsledk\u016f zkou\u0161ek se nemohou vz\u00e1jemn\u011b nahradit. Surovina, kter\u00e1 spl\u0148uje po\u017eadavky na pevnost v tahu, nezaru\u010duje, \u017ee hotov\u00fd \u0159et\u011bz nebo kov\u00e1n\u00ed vydr\u017e\u00ed po\u017eadovan\u00e9 zat\u00ed\u017een\u00ed. Stejn\u011b tak hotov\u00fd v\u00fdrobek, kter\u00fd projde tahovou zkou\u0161kou, ne\u0159ekne o samotn\u00e9m materi\u00e1lu v\u0161e. P\u0159i v\u00fdrob\u011b a kontrole kvality proto kontrolujeme materi\u00e1l a hotov\u00fd v\u00fdrobek odd\u011blen\u011b. Nepou\u017e\u00edv\u00e1me jeden protokol o materi\u00e1lu jako n\u00e1hradu za v\u0161echny ostatn\u00ed kontroly.<\/p>\n<h2>Jak se prov\u00e1d\u00ed zkou\u0161ka tahem?<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19045\" src=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/08\/How-Is-Tensile-Testing-Performed.jpg\" alt=\"Jak se prov\u00e1d\u00ed zkou\u0161ka tahem?\" width=\"1200\" height=\"550\" srcset=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/08\/How-Is-Tensile-Testing-Performed.jpg 1200w, https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/08\/How-Is-Tensile-Testing-Performed-768x352.jpg 768w, https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/08\/How-Is-Tensile-Testing-Performed-18x8.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<p>Prvn\u00edm krokem je ov\u011b\u0159it, co bude testov\u00e1no. Kovov\u00e9 materi\u00e1ly se obvykle testuj\u00ed podle norem, jako jsou <a href=\"https:\/\/store.astm.org\/e0008_e0008m-25.html\">ASTM E8\/E8M<\/a> nebo <a href=\"https:\/\/www.iso.org\/standard\/78322.html\">ISO 6892-1<\/a> (spole\u010dn\u00e9 normy pro zkou\u0161en\u00ed kovov\u00fdch vzork\u016f). U \u0159et\u011bz\u016f, pru\u017ein, spojovac\u00edch d\u00edl\u016f a dal\u0161\u00edch \u017eelez\u00e1\u0159sk\u00fdch v\u00fdrobk\u016f by zku\u0161ebn\u00ed metoda m\u011bla odpov\u00eddat tvaru a zam\u00fd\u0161len\u00e9mu pou\u017eit\u00ed v\u00fdrobku.<\/p>\n<p>Pot\u00e9, co potvrd\u00edte, co se testuje, se vzorek um\u00edst\u00ed do univerz\u00e1ln\u00edho zku\u0161ebn\u00edho stroje (UTM), co\u017e je stroj, kter\u00fd vzorek t\u00e1hne a z\u00e1rove\u0148 m\u011b\u0159\u00ed s\u00edlu. Up\u00ednac\u00ed prvky (\u010d\u00e1sti, kter\u00e9 dr\u017e\u00ed vzorek) mus\u00ed odpov\u00eddat produktu. \u0158et\u011bzy obvykle vy\u017eaduj\u00ed \u010depy nebo speci\u00e1ln\u011b vyroben\u00e9 up\u00ednac\u00ed prvky. H\u00e1ky a spojovac\u00ed \u010dl\u00e1nky by m\u011bly b\u00fdt ta\u017eeny ve sm\u011bru, ve kter\u00e9m se budou norm\u00e1ln\u011b pou\u017e\u00edvat. U ta\u017en\u00e9 pru\u017einy mus\u00ed up\u00ednac\u00ed prvky dr\u017eet oba koncov\u00e9 h\u00e1ky. Pokud je vzorek nainstalov\u00e1n nespr\u00e1vn\u011b, v\u00fdsledek nemus\u00ed uk\u00e1zat, jak produkt skute\u010dn\u011b funguje.<\/p>\n<p>Jakmile je vzorek p\u0159ipraven, stroj zvy\u0161uje ta\u017enou s\u00edlu po\u017eadovanou rychlost\u00ed. N\u011bkter\u00e9 testy se zastav\u00ed, kdy\u017e v\u00fdrobek dos\u00e1hne nastaven\u00e9ho zat\u00ed\u017een\u00ed. Jin\u00e9 pokra\u010duj\u00ed, dokud se vzorek nerozbije nebo dokud ji\u017e nem\u016f\u017ee plnit svou funkci. P\u0159i kontrole v\u00fdsledku se ned\u00edvejte pouze na maxim\u00e1ln\u00ed s\u00edlu. M\u011bli byste tak\u00e9 zkontrolovat trvalou deformaci (zm\u011bnu tvaru, kter\u00e1 p\u0159etrv\u00e1v\u00e1 po odstran\u011bn\u00ed s\u00edly) a zjistit, kde v\u00fdrobek zm\u011bnil tvar nebo se zlomil. Nap\u0159\u00edklad sva\u0159ovan\u00fd \u0159et\u011bz, kter\u00fd se zlom\u00ed ve svarov\u00e9m m\u00edst\u011b, m\u016f\u017ee m\u00edt jin\u00fd probl\u00e9m ne\u017e \u0159et\u011bz, kter\u00fd se zlom\u00ed jinde na \u010dl\u00e1nku.<\/p>\n<h2>Jak\u00e9 v\u00fdsledky m\u016f\u017ee poskytnout zkou\u0161ka tahem?<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19046\" src=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/08\/What-Results-Can-Tensile-Testing-Provide.jpg\" alt=\"Jak\u00e9 v\u00fdsledky m\u016f\u017ee poskytnout zkou\u0161ka tahem?\" width=\"1448\" height=\"939\" srcset=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/08\/What-Results-Can-Tensile-Testing-Provide.jpg 1448w, https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/08\/What-Results-Can-Tensile-Testing-Provide-768x498.jpg 768w, https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/08\/What-Results-Can-Tensile-Testing-Provide-18x12.jpg 18w\" sizes=\"auto, (max-width: 1448px) 100vw, 1448px\" \/><\/p>\n<p>Ne\u017e si prohl\u00e9dnete zku\u0161ebn\u00ed protokol, nejprve ov\u011b\u0159te, zda popisuje vlastnosti materi\u00e1lu nebo v\u00fdsledky zkou\u0161ek kompletn\u00edho produktu.<\/p>\n<table style=\"width: 100%; border-collapse: collapse; margin: 24px 0;\">\n<thead>\n<tr>\n<th style=\"background: #f1f3f5; border: 1px solid #d9d9d9; padding: 12px 14px; text-align: left; font-weight: bold; vertical-align: middle;\">V\u00fdsledek testu<\/th>\n<th style=\"background: #f1f3f5; border: 1px solid #d9d9d9; padding: 12px 14px; text-align: left; font-weight: bold; vertical-align: middle;\">Co to znamen\u00e1<\/th>\n<th style=\"background: #f1f3f5; border: 1px solid #d9d9d9; padding: 12px 14px; text-align: left; font-weight: bold; vertical-align: middle;\">B\u011b\u017en\u011b testovan\u00e9 polo\u017eky<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background-color: #ffffff;\">\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #ffffff;\">Pevnost v tahu<\/td>\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #ffffff;\">Nejvy\u0161\u0161\u00ed ta\u017en\u00e1 s\u00edla vzhledem k p\u016fvodn\u00ed plo\u0161e pr\u016f\u0159ezu vzorku<\/td>\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #ffffff;\">Ocel, kovov\u00fd dr\u00e1t a standardn\u00ed zku\u0161ebn\u00ed vzorky<\/td>\n<\/tr>\n<tr style=\"background-color: #f7f7f7;\">\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #f7f7f7;\">Mez kluzu<\/td>\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #f7f7f7;\">Bod, ve kter\u00e9m materi\u00e1l za\u010dne trvale m\u011bnit tvar vlivem ta\u017en\u00e9 s\u00edly<\/td>\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #f7f7f7;\">Kovov\u00e9 materi\u00e1ly a standardn\u00ed zku\u0161ebn\u00ed vzorky<\/td>\n<\/tr>\n<tr style=\"background-color: #ffffff;\">\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #ffffff;\">Prodlou\u017een\u00ed<\/td>\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #ffffff;\">O kolik se materi\u00e1l nat\u00e1hne, ne\u017e se p\u0159etrhne, v porovn\u00e1n\u00ed s jeho p\u016fvodn\u00ed m\u011b\u0159enou d\u00e9lkou (d\u00e9lkou pou\u017eitou pro m\u011b\u0159en\u00ed)<\/td>\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #ffffff;\">Zkou\u0161ky oceli, dr\u00e1tu a n\u011bkter\u00fdch hotov\u00fdch kovov\u00fdch v\u00fdrobk\u016f<\/td>\n<\/tr>\n<tr style=\"background-color: #f7f7f7;\">\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #f7f7f7;\">Modul pru\u017enosti<\/td>\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #f7f7f7;\">Jak tuh\u00fd je materi\u00e1l, ne\u017e za\u010dne trvale m\u011bnit tvar<\/td>\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #f7f7f7;\">Kovov\u00e9 materi\u00e1ly a pru\u017einov\u00e9 materi\u00e1ly<\/td>\n<\/tr>\n<tr style=\"background-color: #ffffff;\">\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #ffffff;\">Zku\u0161ebn\u00ed zat\u00ed\u017een\u00ed<\/td>\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #ffffff;\">Zku\u0161ebn\u00ed zat\u00ed\u017een\u00ed, kter\u00e9mu mus\u00ed v\u00fdrobek odolat podle p\u0159\u00edslu\u0161n\u00e9 normy<\/td>\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #ffffff;\">\u0158et\u011bzy, h\u00e1ky a spojovac\u00ed \u010dl\u00e1nky<\/td>\n<\/tr>\n<tr style=\"background-color: #f7f7f7;\">\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #f7f7f7;\">Mezn\u00ed s\u00edla<\/td>\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #f7f7f7;\">S\u00edla, p\u0159i kter\u00e9 se vzorek nebo hotov\u00fd v\u00fdrobek zlom\u00ed nebo p\u0159estane fungovat podle o\u010dek\u00e1v\u00e1n\u00ed<\/td>\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #f7f7f7;\">\u0158et\u011bzy, h\u00e1ky, spojovac\u00ed \u010dl\u00e1nky a dr\u00e1t\u011bn\u00e9 v\u00fdrobky<\/td>\n<\/tr>\n<tr style=\"background-color: #ffffff;\">\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #ffffff;\">Vztah mezi zat\u00ed\u017een\u00edm a prodlou\u017een\u00edm<\/td>\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #ffffff;\">Jak daleko se produkt rozprost\u00edr\u00e1 p\u0159i r\u016fzn\u00fdch ta\u017en\u00fdch sil\u00e1ch<\/td>\n<td style=\"border: 1px solid #d9d9d9; padding: 12px 14px; vertical-align: top; background-color: #ffffff;\">Ta\u017en\u00e9 pru\u017einy a ta\u017en\u00e9 pru\u017einy<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Pokud testujete materi\u00e1l, je t\u0159eba spole\u010dn\u011b zv\u00e1\u017eit mez kluzu, pevnost v tahu, prodlou\u017een\u00ed a modul pru\u017enosti. Nem\u011bli byste materi\u00e1l posuzovat pouze podle nejvy\u0161\u0161\u00ed hodnoty.<\/p>\n<p>U hotov\u00e9ho v\u00fdrobku se zam\u011b\u0159en\u00ed m\u011bn\u00ed. Mus\u00edte se zam\u011b\u0159it na specifikovan\u00e9 zku\u0161ebn\u00ed zat\u00ed\u017een\u00ed, maxim\u00e1ln\u00ed s\u00edlu, prodlou\u017een\u00ed nebo deformaci a na to, jak a kde v\u00fdrobek selhal. Samotn\u00e1 mezn\u00ed s\u00edla v\u00e1m ne\u0159ekne, zda v\u00fdrobek spl\u0148uje v\u0161echny po\u017eadavky.<\/p>\n<h3>Pevnost v tahu popisuje hlavn\u011b v\u00fdkon materi\u00e1lu<\/h3>\n<p>Pevnost v tahu popisuje nap\u011bt\u00ed, nikoli celkovou ta\u017enou s\u00edlu, kterou ukazuje zku\u0161ebn\u00ed stroj. Vypo\u010d\u00edt\u00e1v\u00e1 se pomoc\u00ed aplikovan\u00e9 s\u00edly a p\u016fvodn\u00ed plochy pr\u016f\u0159ezu vzorku (plocha nap\u0159\u00ed\u010d vzorkem, pokud j\u00edm pro\u0159\u00edznete). V\u00fdsledek se obvykle vyjad\u0159uje v MPa (megapascalech) nebo N\/mm\u00b2 (newtonech na \u010dtvere\u010dn\u00ed milimetr). Pevnost v tahu je d\u016fle\u017eit\u00e1 p\u0159i hodnocen\u00ed materi\u00e1lu. U hotov\u00e9ho v\u00fdrobku v\u0161ak jeho rozm\u011bry, tvar, sva\u0159ov\u00e1n\u00ed, tepeln\u00e9 zpracov\u00e1n\u00ed a sm\u011br ta\u017een\u00ed ovliv\u0148uj\u00ed jeho vlastnosti. Proto nelze ur\u010dit mezn\u00ed pracovn\u00ed zat\u00ed\u017een\u00ed (WLL), co\u017e je maxim\u00e1ln\u00ed povolen\u00e9 zat\u00ed\u017een\u00ed p\u0159i b\u011b\u017en\u00e9m pou\u017e\u00edv\u00e1n\u00ed, pouze z pevnosti v tahu materi\u00e1lu.<\/p>\n<h3>Mezn\u00ed s\u00edla popisuje konkr\u00e9tn\u00ed vzorek nebo hotov\u00fd v\u00fdrobek<\/h3>\n<p>Mezn\u00ed s\u00edla je skute\u010dn\u00e1 s\u00edla, kterou p\u0159en\u00e1\u0161\u00ed vzorek materi\u00e1lu nebo hotov\u00fd v\u00fdrobek p\u0159i jeho poru\u0161en\u00ed. Obvykle se vyjad\u0159uje v N (newtonech) nebo kN (kilonewtonech). I kdy\u017e dva v\u00fdrobky pou\u017e\u00edvaj\u00ed stejn\u00fd materi\u00e1l, jejich mezn\u00ed s\u00edla se m\u016f\u017ee li\u0161it, pokud se li\u0161\u00ed jejich tlou\u0161\u0165ka, velikost nebo tvar.<\/p>\n<p>U sva\u0159ovan\u00fdch ocelov\u00fdch \u0159et\u011bz\u016f z\u00e1vis\u00ed mezn\u00ed s\u00edla na v\u00edce faktorech ne\u017e jen na materi\u00e1lu. Pr\u016fm\u011br \u010dl\u00e1nku, tvar \u010dl\u00e1nku, kvalita svaru a tepeln\u00e9 zpracov\u00e1n\u00ed \u2013 to v\u0161e m\u016f\u017ee ovlivnit v\u00fdsledek. Mezn\u00ed s\u00edla tak\u00e9 nen\u00ed jedinou d\u016fle\u017eitou hodnotou pro ka\u017ed\u00fd v\u00fdrobek. Nap\u0159\u00edklad S-h\u00e1k nebo spojovac\u00ed \u010dl\u00e1nek se m\u016f\u017ee deformovat nebo p\u0159estat dr\u017eet spojen\u00ed je\u0161t\u011b p\u0159edt\u00edm, ne\u017e se skute\u010dn\u011b p\u0159etrhne.<\/p>\n<h3>Zku\u0161ebn\u00ed zat\u00ed\u017een\u00ed nen\u00ed tot\u00e9\u017e co provozn\u00ed zat\u00ed\u017een\u00ed<\/h3>\n<p>Zku\u0161ebn\u00ed zat\u00ed\u017een\u00ed je zku\u0161ebn\u00ed s\u00edla stanoven\u00e1 p\u0159\u00edslu\u0161nou normou pro v\u00fdrobek. M\u016f\u017ee se tak\u00e9 naz\u00fdvat specifikovan\u00e9 zku\u0161ebn\u00ed zat\u00ed\u017een\u00ed. B\u011bhem zkou\u0161ky mus\u00ed v\u00fdrobek odolat t\u00e9to s\u00edle bez jak\u00e9koli zm\u011bny tvaru, po\u0161kozen\u00ed nebo selh\u00e1n\u00ed, kter\u00e9 norma neumo\u017e\u0148uje. Zku\u0161ebn\u00ed zat\u00ed\u017een\u00ed se pou\u017e\u00edv\u00e1 pro kontrolu. Nejedn\u00e1 se o limit provozn\u00edho zat\u00ed\u017een\u00ed v\u00fdrobku.<\/p>\n<p>Mezn\u00ed nosnost slou\u017e\u00ed jin\u00e9mu \u00fa\u010delu. Je to maxim\u00e1ln\u00ed zat\u00ed\u017een\u00ed, kter\u00e9 je v\u00fdrobek dimenzov\u00e1n un\u00e9st za norm\u00e1ln\u00edho provozu, tak\u017ee se nerovn\u00e1 specifikovan\u00e9mu zku\u0161ebn\u00edmu zat\u00ed\u017een\u00ed nebo minim\u00e1ln\u00ed pevnosti v tahu. Bez p\u0159\u00edslu\u0161n\u00e9 normy v\u00fdrobku a jmenovit\u00fdch \u00fadaj\u016f v\u00fdrobce byste nem\u011bli vypo\u010d\u00edt\u00e1vat mezn\u00ed nosnost z v\u00fdsledku jedin\u00e9 zkou\u0161ky pevnosti v tahu. Nikdy byste nem\u011bli uv\u00e1d\u011bt v\u00fdrobek do provozu pouze na z\u00e1klad\u011b takov\u00e9ho v\u00fdpo\u010dtu.<\/p>\n<h2>Jak se li\u0161\u00ed priority tahov\u00fdch zkou\u0161ek mezi hardwarov\u00fdmi produkty?<\/h2>\n<p>A\u0165 u\u017e kupujete \u0159et\u011bzy, pru\u017einy, h\u00e1ky nebo spojovac\u00ed \u010dl\u00e1nky, m\u016f\u017eete po\u017e\u00e1dat v\u00fdrobce o proveden\u00ed vhodn\u00e9 z\u00e1t\u011b\u017eov\u00e9 zkou\u0161ky k ov\u011b\u0159en\u00ed hotov\u00e9ho v\u00fdrobku. Tyto v\u00fdrobky v\u0161ak maj\u00ed odli\u0161n\u00e9 struktury a pou\u017eit\u00ed, tak\u017ee se budou li\u0161it i priority testov\u00e1n\u00ed a zp\u016fsob interpretace v\u00fdsledk\u016f.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19047\" src=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/08\/How-Do-Tensile-Testing-Priorities-Differ-Between-Hardware-Products.jpg\" alt=\"Jak se li\u0161\u00ed priority tahov\u00fdch zkou\u0161ek mezi hardwarov\u00fdmi produkty?\" width=\"1200\" height=\"550\" srcset=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/08\/How-Do-Tensile-Testing-Priorities-Differ-Between-Hardware-Products.jpg 1200w, https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/08\/How-Do-Tensile-Testing-Priorities-Differ-Between-Hardware-Products-768x352.jpg 768w, https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/08\/How-Do-Tensile-Testing-Priorities-Differ-Between-Hardware-Products-18x8.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<h3>\u0158et\u011bzy<\/h3>\n<p>Pokud kupujete \u0159et\u011bzov\u00e9 produkty, protokol o zkou\u0161ce suroviny nem\u016f\u017ee nahradit v\u00fdsledek zkou\u0161ky hotov\u00e9ho \u0159et\u011bzu. Hotov\u00fd \u0159et\u011bz je tak\u00e9 t\u0159eba nat\u00e1hnout a otestovat jako kompletn\u00ed v\u00fdrobek. M\u011bli byste zkontrolovat specifikovan\u00e9 zku\u0161ebn\u00ed zat\u00ed\u017een\u00ed, minim\u00e1ln\u00ed mezn\u00ed s\u00edlu a jak\u00e9koli nata\u017een\u00ed nebo zm\u011bnu tvaru \u010dl\u00e1nk\u016f. Zkou\u0161ka kompletn\u00edho \u0159et\u011bzu ukazuje, jak materi\u00e1l, rozm\u011bry \u010dl\u00e1nk\u016f, kvalita svaru a tepeln\u00e9 zpracov\u00e1n\u00ed vz\u00e1jemn\u011b funguj\u00ed. Nem\u016f\u017ee v\u0161ak nahradit samostatn\u00e9 kontroly materi\u00e1lu, rozm\u011br\u016f a svar\u016f.<\/p>\n<p>Pot\u00e9, co v\u00edte, kter\u00e9 v\u00fdsledky m\u00e1te zkontrolovat, je tak\u00e9 nutn\u00e9 pou\u017e\u00edt spr\u00e1vn\u00fd testovac\u00ed standard. Standardy se li\u0161\u00ed v z\u00e1vislosti na <a href=\"https:\/\/tuohaihardware.com\/cs\/rozdil-mezi-tridami-retezu-a-jak-je-identifikovat\/\">\u0159et\u011bzov\u00e1 t\u0159\u00edda<\/a>, velikost a zam\u00fd\u0161len\u00e9 pou\u017eit\u00ed.<\/p>\n<ul>\n<li>N\u011bjak\u00fd <a href=\"https:\/\/tuohaihardware.com\/cs\/ocelovy-retez\/retez-z-uhlikove-oceli\/\">sva\u0159ovan\u00e9 \u0159et\u011bzy z uhl\u00edkov\u00e9 oceli<\/a> lze testovat s odkazem na <a href=\"https:\/\/store.astm.org\/a0413_a0413m-21.html\">ASTM A413\/A413M<\/a> (norma pro ur\u010dit\u00e9 sva\u0159ovan\u00e9 \u0159et\u011bzy z uhl\u00edkov\u00e9 oceli). Ostatn\u00ed \u0159et\u011bzy by m\u011bly spl\u0148ovat p\u0159\u00edslu\u0161n\u00e9 normy od organizace ASTM International, <a href=\"https:\/\/www.nacm.info\/specifications\/\">N\u00e1rodn\u00ed asociace v\u00fdrobc\u016f \u0159et\u011bz\u016f (NACM)<\/a>, Mezin\u00e1rodn\u00ed organizace pro normalizaci (ISO) nebo jin\u00e1 vhodn\u00e1 organizace.<\/li>\n<li>Pokud kupujete lehk\u00fd bez\u0161vov\u00fd \u0159et\u011bz, jako nap\u0159\u00edklad <a href=\"https:\/\/tuohaihardware.com\/cs\/nesvarovany-retez\/retez-s-dvojitou-smyckou\/\">\u0159et\u011bz s dvojitou smy\u010dkou<\/a>, <a href=\"https:\/\/tuohaihardware.com\/cs\/nesvarovany-retez\/zvedak-retez\/\">\u0159et\u011bz typu Jack<\/a>nebo <a href=\"https:\/\/tuohaihardware.com\/cs\/nesvarovany-retez\/kridlovy-retez\/\">okenn\u00ed \u0159et\u011bz<\/a>, nem\u011bli byste p\u0159\u00edmo uplat\u0148ovat po\u017eadavky na transportn\u00ed \u0159et\u011bz nebo zvedac\u00ed \u0159et\u011bz. Jin\u00e9 lehk\u00e9 v\u00fdrobky, v\u010detn\u011b <a href=\"https:\/\/tuohaihardware.com\/cs\/retez-s-jednou-smyckou\/\">\u0159et\u011bz s jednou smy\u010dkou<\/a> a <a href=\"https:\/\/tuohaihardware.com\/cs\/zavesny-retez\/\">z\u00e1v\u011bsn\u00fd \u0159et\u011bz<\/a>, tak\u00e9 pot\u0159ebuj\u00ed zku\u0161ebn\u00ed po\u017eadavky, kter\u00e9 odpov\u00eddaj\u00ed jejich tvaru a zam\u00fd\u0161len\u00e9mu pou\u017eit\u00ed.<\/li>\n<\/ul>\n<p>Sva\u0159ovan\u00e9 a bez\u0161vov\u00e9 \u0159et\u011bzy maj\u00ed odli\u0161nou strukturu a pou\u017eit\u00ed, tak\u017ee byste je nem\u011bli posuzovat stejn\u011b.<\/p>\n<h3>pru\u017einy<\/h3>\n<p>Pro <a href=\"https:\/\/tuohaihardware.com\/cs\/spiralova-pruzina\/tazna-pruzina\/\">ta\u017en\u00e1 pru\u017eina nebo ta\u017en\u00e1 pru\u017eina<\/a>, Hlavn\u00edmi body jsou obvykle s\u00edla v dan\u00e9 d\u00e9lce, po\u010d\u00e1te\u010dn\u00ed nap\u011bt\u00ed (s\u00edla, kter\u00e1 je ji\u017e p\u0159\u00edtomna p\u0159edt\u00edm, ne\u017e se z\u00e1vity za\u010dnou odd\u011blovat) a to, zda se pru\u017eina po odstran\u011bn\u00ed s\u00edly vr\u00e1t\u00ed do p\u016fvodn\u00edho tvaru. Tyto v\u00fdsledky \u010dasto vypov\u00eddaj\u00ed v\u00edce o tom, zda pru\u017eina dok\u00e1\u017ee poskytnout po\u017eadovanou s\u00edlu ve sv\u00e9 pracovn\u00ed poloze, ne\u017e jej\u00ed maxim\u00e1ln\u00ed s\u00edla p\u0159i p\u0159etr\u017een\u00ed.<\/p>\n<p>Pevnost v tahu dr\u00e1tu v\u0161ak nelze pou\u017e\u00edt m\u00edsto t\u011bchto v\u00fdsledk\u016f hotov\u00e9 pru\u017einy. Pr\u016fm\u011br c\u00edvky, po\u010det aktivn\u00edch c\u00edvek (c\u00edvek, kter\u00e9 se pohybuj\u00ed, kdy\u017e je pru\u017eina zat\u00ed\u017eena), tepeln\u00e9 zpracov\u00e1n\u00ed a koncov\u00e9 h\u00e1ky \u2013 to v\u0161e ovliv\u0148uje hotovou pru\u017einu. M\u011bli byste si tak\u00e9 uv\u011bdomit, \u017ee <a href=\"https:\/\/tuohaihardware.com\/cs\/spiralova-pruzina\/tlacna-pruzina\/\">tla\u010dn\u00e1 pru\u017eina<\/a> se p\u0159i b\u011b\u017en\u00e9m pou\u017e\u00edv\u00e1n\u00ed sp\u00ed\u0161e tla\u010d\u00ed ne\u017e t\u00e1hne. Proto je nutn\u00e1 zkou\u0161ka tlakov\u00fdm zat\u00ed\u017een\u00edm m\u00edsto zkou\u0161ky tahem.<\/p>\n<p>Z t\u011bchto d\u016fvod\u016f by m\u011bla b\u00fdt pru\u017eina testov\u00e1na podle v\u00fdkresu v\u00fdrobku, dohodnut\u00fdch technick\u00fdch po\u017eadavk\u016f nebo p\u0159\u00edslu\u0161n\u00e9 pr\u016fmyslov\u00e9 normy.<\/p>\n<h3>H\u00e1ky, spojovac\u00ed \u010dl\u00e1nky a tvarovan\u00e9 kovov\u00e9 d\u00edly<\/h3>\n<p>Pro hotov\u00e9 v\u00fdrobky, jako nap\u0159. <a href=\"https:\/\/tuohaihardware.com\/cs\/s-hacky\/\">S h\u00e1\u010dky<\/a>, rychloup\u00ednac\u00ed \u010dl\u00e1nky, spojovac\u00ed \u010dl\u00e1nky, karabiny a dr\u00e1t\u011bn\u00e9 formy, je t\u0159eba zkontrolovat jak ta\u017enou s\u00edlu, tak i jakoukoli zm\u011bnu tvaru. V\u00fdrobek se b\u011bhem zkou\u0161ky nemus\u00ed zlomit, ale mohl se ji\u017e ohnout, otev\u0159\u00edt nebo p\u0159estat fungovat podle o\u010dek\u00e1v\u00e1n\u00ed.<\/p>\n<p>Aby tyto kontroly m\u011bly smysl, je nutn\u00e9 produkt t\u00e1hnout tak\u00e9 v jeho norm\u00e1ln\u00edm sm\u011bru pou\u017eit\u00ed. Pokud je sm\u011br ta\u017een\u00ed nebo kontaktn\u00ed bod nespr\u00e1vn\u00fd, v\u00fdsledek m\u016f\u017ee ukazovat na probl\u00e9m s nastaven\u00edm testu, nikoli s produktem. U zak\u00e1zkov\u00fdch h\u00e1\u010dk\u016f, spojovac\u00edch \u010dl\u00e1nk\u016f a dr\u00e1t\u011bn\u00fdch tvarovek je nejprve nutn\u00e9 pochopit, jak bude produkt instalov\u00e1n a ta\u017een v re\u00e1ln\u00e9m provozu. Pot\u00e9 se m\u016f\u017eete rozhodnout, zda by se test m\u011bl zam\u011b\u0159it na maxim\u00e1ln\u00ed s\u00edlu, zm\u011bnu tvaru nebo ztr\u00e1tu spojen\u00ed.<\/p>\n<p>Z tohoto d\u016fvodu by kone\u010dn\u00e1 zku\u0161ebn\u00ed metoda pro h\u00e1ky, spojovac\u00ed \u010dl\u00e1nky a tvarovan\u00e9 kovov\u00e9 d\u00edly m\u011bla odpov\u00eddat p\u0159\u00edslu\u0161n\u00e9 norm\u011b v\u00fdrobku nebo technick\u00fdm po\u017eadavk\u016fm potvrzen\u00fdm se z\u00e1kazn\u00edkem.<\/p>\n<h2>Jak\u00e9 informace o zkou\u0161ce tahem byste si m\u011bli ov\u011b\u0159it p\u0159i n\u00e1kupu?<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19048\" src=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/08\/What-Tensile-Testing-Information-Should-You-Confirm-When-Purchasing.jpg\" alt=\"Jak\u00e9 informace o zkou\u0161ce tahem byste si m\u011bli ov\u011b\u0159it p\u0159i n\u00e1kupu?\" width=\"1200\" height=\"700\" srcset=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/08\/What-Tensile-Testing-Information-Should-You-Confirm-When-Purchasing.jpg 1200w, https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/08\/What-Tensile-Testing-Information-Should-You-Confirm-When-Purchasing-768x448.jpg 768w, https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/08\/What-Tensile-Testing-Information-Should-You-Confirm-When-Purchasing-18x12.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<p>P\u0159i n\u00e1kupu materi\u00e1l\u016f, \u0159et\u011bz\u016f, pru\u017ein nebo jin\u00e9ho hardwaru obvykle nepot\u0159ebujete v\u0161echna nastaven\u00ed zku\u0161ebn\u00edho stroje. V\u00fdsledek m\u016f\u017ee ovlivnit zku\u0161ebn\u00ed rychlost, up\u00ednac\u00ed p\u0159\u00edpravky, maxim\u00e1ln\u00ed s\u00edla, kterou stroj dok\u00e1\u017ee vyvinout, a sm\u011br ta\u017een\u00ed. Pro b\u011b\u017enou kontrolu n\u00e1kupu v\u0161ak obvykle sta\u010d\u00ed pouze potvrdit, \u017ee zku\u0161ebn\u00ed metoda odpov\u00edd\u00e1 dan\u00e9mu produktu, a zkontrolovat hlavn\u00ed v\u00fdsledky generovan\u00e9 strojem, jako je zku\u0161ebn\u00ed zat\u00ed\u017een\u00ed, maxim\u00e1ln\u00ed s\u00edla, prota\u017een\u00ed nebo zm\u011bna tvaru.<\/p>\n<p>S ohledem na to byste si m\u011bli nejprve ov\u011b\u0159it, zda polo\u017eka popsan\u00e1 ve zpr\u00e1v\u011b odpov\u00edd\u00e1 produktu, kter\u00fd kupujete. Pot\u00e9 byste m\u011bli zkontrolovat, zda v\u00fdsledek spl\u0148uje dohodnut\u00e9 po\u017eadavky.<\/p>\n<p>Konkr\u00e9tn\u00ed v\u00fdsledky, kter\u00e9 d\u00e1le zkontrolujete, z\u00e1vis\u00ed na produktu:<\/p>\n<ul>\n<li>Pokud kupujete surovinu, m\u011bli byste se ve zpr\u00e1v\u011b zam\u011b\u0159it na pevnost v tahu, mez kluzu a prodlou\u017een\u00ed.<\/li>\n<li>Pokud kupujete \u0159et\u011bzy, h\u00e1ky nebo spojovac\u00ed \u010dl\u00e1nky, m\u011bli byste se zam\u011b\u0159it na specifikovan\u00e9 zku\u0161ebn\u00ed zat\u00ed\u017een\u00ed, mezn\u00ed s\u00edlu a deformaci.<\/li>\n<li>U protokolu o zkou\u0161ce ta\u017en\u00e9 pru\u017einy byste m\u011bli v\u011bnovat zvl\u00e1\u0161tn\u00ed pozornost s\u00edle p\u0159i specifikovan\u00e9 d\u00e9lce a zotaven\u00ed pru\u017einy po odleh\u010den\u00ed.<\/li>\n<\/ul>\n<p>Pokud va\u0161e objedn\u00e1vka obsahuje n\u011bkolik velikost\u00ed nebo jakost\u00ed, \u00fasp\u011b\u0161n\u00fd v\u00fdsledek pro jednu specifikaci nedokazuje, \u017ee vyhov\u011bl cel\u00fd sortiment v\u00fdrobk\u016f. V takov\u00e9 situaci byste m\u011bli po\u017e\u00e1dat dodavatele, aby jasn\u011b ur\u010dil, kter\u00e1 specifikace v\u00fdrobku odpov\u00edd\u00e1 ka\u017ed\u00e9mu v\u00fdsledku zkou\u0161ky.<\/p>\n<p>Krom\u011b porovn\u00e1n\u00ed ka\u017ed\u00e9ho v\u00fdsledku se spr\u00e1vnou specifikac\u00ed m\u016f\u017ee b\u00fdt nutn\u00e9 potvrdit dal\u0161\u00ed podrobnosti, pokud norma produktu, smlouva nebo c\u00edlov\u00fd trh maj\u00ed specifick\u00e9 po\u017eadavky na testov\u00e1n\u00ed. V tomto p\u0159\u00edpad\u011b byste se m\u011bli s dodavatelem dohodnout na mno\u017estv\u00ed vzorku, testov\u00e1n\u00ed t\u0159et\u00ed stranou (testov\u00e1n\u00ed nez\u00e1vislou laborato\u0159\u00ed) nebo jak\u00fdchkoli dal\u0161\u00edch zku\u0161ebn\u00edch podm\u00ednk\u00e1ch. U produkt\u016f ur\u010den\u00fdch pro Spojen\u00e9 st\u00e1ty, Evropu, Austr\u00e1lii nebo jin\u00fd specifick\u00fd trh byste si m\u011bli p\u0159edem ov\u011b\u0159it, zda projekt, z\u00e1kazn\u00edk nebo odv\u011btv\u00ed vy\u017eaduje konkr\u00e9tn\u00ed zku\u0161ebn\u00ed normu. To pom\u00e1h\u00e1 zabr\u00e1nit tomu, aby dodavatel pou\u017eil zku\u0161ebn\u00ed metodu, kter\u00e1 nespl\u0148uje po\u017eadavky na kone\u010dn\u00e9 p\u0159ijet\u00ed.<\/p>\n<h2>Jak\u00e1 jsou omezen\u00ed zkou\u0161ek tahem?<\/h2>\n<p>Zkou\u0161ka tahem v\u00e1m m\u016f\u017ee pomoci pochopit pevnost produktu, jak daleko se natahuje a zda m\u011bn\u00ed tvar. M\u00e1 v\u0161ak tak\u00e9 n\u011bkolik omezen\u00ed:<\/p>\n<ul>\n<li><strong>Test m\u016f\u017ee vzorek zni\u010dit.<\/strong> P\u0159i lomov\u00e9m testu se vzorek t\u00e1hne, dokud se nerozbije, tak\u017ee v\u00fdrobci obvykle testuj\u00ed pouze vybran\u00e9 vzorky, nikoli ka\u017ed\u00fd hotov\u00fd v\u00fdrobek.<\/li>\n<li><strong>Jeden v\u00fdsledek testu nem\u016f\u017ee reprezentovat v\u0161echny produkty v d\u00e1vce.<\/strong> M\u016f\u017ee v\u00e1m to pomoci posoudit, zda \u0161ar\u017ee spl\u0148uje po\u017eadovanou \u00farove\u0148, ale b\u011b\u017en\u00e9 rozd\u00edly v materi\u00e1lech a v\u00fdrob\u011b mohou zp\u016fsobit, \u017ee jednotliv\u00e9 produkty budou produkovat m\u00edrn\u011b odli\u0161n\u00e9 v\u00fdsledky.<\/li>\n<li><strong>V\u00fdsledek testu nem\u016f\u017ee pln\u011b odr\u00e1\u017eet v\u00fdkon ve skute\u010dn\u00e9m pou\u017eit\u00ed.<\/strong> Konven\u010dn\u00ed tahov\u00e1 zkou\u0161ka obvykle aplikuje st\u00e1lou s\u00edlu v jednom sm\u011bru. V re\u00e1ln\u00e9m provozu m\u016f\u017ee b\u00fdt v\u00fdrobek vystaven tak\u00e9 n\u00e1raz\u016fm, opakovan\u00e9mu zat\u00ed\u017een\u00ed, bo\u010dn\u00edm sil\u00e1m, kroucen\u00ed, opot\u0159eben\u00ed nebo korozi.<\/li>\n<\/ul>\n<p>Z t\u011bchto d\u016fvod\u016f \u00fasp\u011b\u0161n\u00e9 absolvov\u00e1n\u00ed zkou\u0161ky tahem neznamen\u00e1, \u017ee se v\u00fdrobek bude chovat stejn\u011b za v\u0161ech provozn\u00edch podm\u00ednek.<\/p>\n<h2>\u010casto kladen\u00e9 ot\u00e1zky o zkou\u0161ce tahem<\/h2>\n<h3>Jak\u00fd je standard akceptace pro zkou\u0161ku tahem hardwaru?<\/h3>\n<p>Pro ka\u017edou zkou\u0161ku tahem hardwaru neexistuje jedin\u00e1 hodnota pro dosa\u017een\u00ed po\u017eadovan\u00e9ho v\u00fdsledku. Nejprve je t\u0159eba v\u011bd\u011bt, zda se zkou\u0161ka t\u00fdk\u00e1 materi\u00e1lu nebo hotov\u00e9ho v\u00fdrobku, jako je \u0159et\u011bz, pru\u017eina nebo h\u00e1k. Kovov\u00e9 materi\u00e1ly se b\u011b\u017en\u011b testuj\u00ed podle metod, jako je ASTM E8\/E8M nebo ISO 6892-1 (spole\u010dn\u00e9 normy pro zkou\u0161en\u00ed kovov\u00fdch vzork\u016f). Hotov\u00e9 v\u00fdrobky mus\u00ed spl\u0148ovat p\u0159\u00edslu\u0161nou normu v\u00fdrobku, v\u00fdkres nebo po\u017eadavek objedn\u00e1vky. P\u0159i zkou\u0161ce pru\u017einy je s\u00edla na d\u00e9lce uveden\u00e9 na v\u00fdkresu \u010dasto d\u016fle\u017eit\u011bj\u0161\u00ed ne\u017e obecn\u00e1 materi\u00e1lov\u00e1 norma. V\u00fdsledek je p\u0159ijateln\u00fd pouze tehdy, pokud spl\u0148uje po\u017eadavky pro dan\u00fd v\u00fdrobek.<\/p>\n<h3>M\u016f\u017ee protokol o zkou\u0161ce tahem materi\u00e1lu nahradit hotov\u00fd protokol o zkou\u0161ce hardwaru?<\/h3>\n<p>Obvykle ne. Zpr\u00e1va o materi\u00e1lu v\u00e1m sd\u011bl\u00ed pouze informace o samotn\u00e9 oceli nebo dr\u00e1tu. Jakmile je z tohoto materi\u00e1lu vyroben \u0159et\u011bz, pru\u017eina nebo h\u00e1k, sva\u0159ov\u00e1n\u00ed, tv\u00e1\u0159en\u00ed, tepeln\u00e9 zpracov\u00e1n\u00ed a rozm\u011bry v\u00fdrobku ovliv\u0148uj\u00ed, jakou s\u00edlu hotov\u00fd v\u00fdrobek unese. Pokud pot\u0159ebujete potvrdit, jakou ta\u017enou s\u00edlu cel\u00fd v\u00fdrobek unese, pot\u0159ebujete v\u00fdsledek zkou\u0161ky tahem hotov\u00e9ho v\u00fdrobku nebo p\u0159\u00edpadn\u011b zkou\u0161ky tahem v\u00fdrobku (zkou\u0161ka tahem cel\u00e9ho v\u00fdrobku).<\/p>\n<h3>Pro\u010d se mohou v\u00fdsledky tahov\u00fdch zkou\u0161ek u stejn\u00e9ho produktu li\u0161it?<\/h3>\n<p>I kdy\u017e maj\u00ed v\u00fdrobky stejn\u00fd n\u00e1zev a rozm\u011bry, mohou rozd\u00edly v \u0161ar\u017e\u00edch materi\u00e1lu, sva\u0159ov\u00e1n\u00ed, tv\u00e1\u0159en\u00ed a tepeln\u00e9m zpracov\u00e1n\u00ed zp\u016fsobit ur\u010dit\u00e9 odchylky. V\u00fdsledek m\u016f\u017ee b\u00fdt ovlivn\u011bn tak\u00e9 rychlost\u00ed testu, up\u00ednac\u00edmi prvky, sm\u011brem instalace a stavem vzorku. P\u0159i porovn\u00e1v\u00e1n\u00ed n\u011bkolika protokol\u016f byste m\u011bli nejprve ov\u011b\u0159it, zda jsou specifikace produktu, zku\u0161ebn\u00ed norma a zku\u0161ebn\u00ed metoda stejn\u00e9. Pot\u00e9 m\u016f\u017eete hodnoty porovnat.<\/p>\n<h3>Jak pozn\u00e1te, zda je protokol o tahov\u00e9 zkou\u0161ce od dodavatele spolehliv\u00fd?<\/h3>\n<p>Nejprve byste m\u011bli zkontrolovat n\u00e1zev produktu, specifikaci a \u0161ar\u017ei uvedenou ve zpr\u00e1v\u011b, abyste se ujistili, \u017ee se vztahuje na produkt, kter\u00fd kupujete. Pot\u00e9 byste m\u011bli zkontrolovat, zda jsou datum zkou\u0161ky, zku\u0161ebn\u00ed metoda a v\u00fdsledky \u00fapln\u00e9. Pokud specifikace neodpov\u00edd\u00e1 va\u0161\u00ed objedn\u00e1vce nebo hodnota vypad\u00e1 neobvykle, m\u011bli byste po\u017e\u00e1dat dodavatele o vysv\u011btlen\u00ed. Pokud pot\u0159ebujete dal\u0161\u00ed ov\u011b\u0159en\u00ed, m\u016f\u017eete si domluvit testov\u00e1n\u00ed t\u0159et\u00ed stranou (testov\u00e1n\u00ed nez\u00e1vislou laborato\u0159\u00ed).<\/p>\n<h3>Jak se ur\u010duje mno\u017estv\u00ed vzorku a frekvence testov\u00e1n\u00ed?<\/h3>\n<p>Pro ka\u017ed\u00fd produkt neexistuje pevn\u00fd pom\u011br odb\u011bru vzork\u016f. Mno\u017estv\u00ed a \u010detnost z\u00e1vis\u00ed na norm\u011b produktu, po\u017eadavc\u00edch objedn\u00e1vky, velikosti \u0161ar\u017ee a zam\u00fd\u0161len\u00e9m pou\u017eit\u00ed. Pokud objedn\u00e1vka obsahuje n\u011bkolik velikost\u00ed, jakost\u00ed nebo v\u00fdrobn\u00edch \u0161ar\u017e\u00ed, jeden testovan\u00fd vzorek obvykle nereprezentuje v\u0161echny. Pokud neplat\u00ed \u017e\u00e1dn\u00e9 konkr\u00e9tn\u00ed pravidlo, m\u016f\u017eete se s dodavatelem p\u0159ed zad\u00e1n\u00edm objedn\u00e1vky dohodnout, zda budou vzorky vyb\u00edr\u00e1ny podle specifikace nebo podle v\u00fdrobn\u00ed \u0161ar\u017ee.<\/p>\n<h3>Je v\u00fdsledek st\u00e1le platn\u00fd, pokud se vzorek zlom\u00ed v bl\u00edzkosti \u00fachopu?<\/h3>\n<p>Ne v\u017edy. Rukoje\u0165 je \u010d\u00e1st stroje, kter\u00e1 dr\u017e\u00ed vzorek. Pokud se vzorek zlom\u00ed uvnit\u0159 nebo v jeho bl\u00edzkosti, mohl b\u00fdt vzorek p\u0159\u00edli\u0161 pevn\u011b upnut, mohl sklouznout nebo nebyl rovn\u00fd. V t\u00e9to situaci byste se nem\u011bli spol\u00e9hat pouze na maxim\u00e1ln\u00ed s\u00edlu zaznamenanou strojem. M\u011bli byste zkontrolovat, kde se vzorek zlomil podle zku\u0161ebn\u00ed normy, a v p\u0159\u00edpad\u011b pot\u0159eby otestovat dal\u0161\u00ed vzorek.<\/p>\n<h3>Co ur\u010duje cenu a dodac\u00ed lh\u016ftu pro zkou\u0161ky tahem?<\/h3>\n<p>Ujedn\u00e1n\u00ed se li\u0161\u00ed u jednotliv\u00fdch dodavatel\u016f. Tov\u00e1rna na \u0159et\u011bzy Tuohai Hardware m\u00e1 vlastn\u00ed <a href=\"https:\/\/tuohaihardware.com\/cs\/vybaveni-2\/\">za\u0159\u00edzen\u00ed pro zkou\u0161en\u00ed tahem<\/a>. U \u0159et\u011bz\u016f, kter\u00e9 vyr\u00e1b\u00edme a dod\u00e1v\u00e1me, m\u016f\u017eeme zkou\u0161ku prov\u00e9st bez p\u0159\u00edplatku, pokud je v objedn\u00e1vce uvedena zkou\u0161ka tahem. M\u016f\u017eeme tak\u00e9 poskytnout z\u00e1kladn\u00ed v\u00fdsledky generovan\u00e9 za\u0159\u00edzen\u00edm.<\/p>\n<p>Toto ujedn\u00e1n\u00ed se vztahuje na rutinn\u00ed testov\u00e1n\u00ed \u0159et\u011bz\u016f prov\u00e1d\u011bn\u00e9 v na\u0161\u00ed vlastn\u00ed tov\u00e1rn\u011b. Pokud pot\u0159ebujete testov\u00e1n\u00ed t\u0159et\u00ed stranou, speci\u00e1ln\u00ed zpr\u00e1vu nebo dal\u0161\u00ed po\u017eadavky na testov\u00e1n\u00ed, cena a dodac\u00ed lh\u016fta budou z\u00e1viset na konkr\u00e9tn\u00edm po\u017eadavku. Nevyr\u00e1b\u00edme t\u011b\u017ek\u00e9 kotevn\u00ed \u0159et\u011bzy ani \u0159et\u011bzy nadm\u011brn\u00fdch rozm\u011br\u016f, tak\u017ee na\u0161e zku\u0161enosti s testov\u00e1n\u00edm nemohou b\u00fdt pou\u017eity k odhadu n\u00e1klad\u016f na testov\u00e1n\u00ed nebo dodac\u00ed lh\u016fty pro tyto produkty.<\/p>\n<h3>Jak zjist\u00edte, zda je stroj na zkou\u0161en\u00ed tahu \u0159et\u011bz\u016f vhodn\u00fd pro dan\u00fd produkt?<\/h3>\n<p>Nejprve byste m\u011bli ov\u011b\u0159it, zda je zku\u0161ebn\u00ed stroj na \u0159et\u011bzy schopen dos\u00e1hnout po\u017eadovan\u00e9ho zku\u0161ebn\u00edho zat\u00ed\u017een\u00ed nebo o\u010dek\u00e1van\u00e9 mezn\u00ed s\u00edly. Pot\u00e9 byste m\u011bli zkontrolovat, zda m\u00e1 \u010depy nebo up\u00ednac\u00ed p\u0159\u00edpravky (up\u00ednac\u00ed n\u00e1stroje), kter\u00e9 odpov\u00eddaj\u00ed velikosti \u0159et\u011bzu. B\u011bhem zkou\u0161ky zat\u00ed\u017een\u00ed \u0159et\u011bzu nebude v\u00fdsledek spolehliv\u00fd, pokud stroj nem\u016f\u017ee vyvinout dostate\u010dnou s\u00edlu nebo pokud up\u00ednac\u00ed p\u0159\u00edpravky oh\u00fdbaj\u00ed \u010dl\u00e1nky v opa\u010dn\u00e9m sm\u011bru. P\u0159i b\u011b\u017en\u00e9m n\u00e1kupu obvykle nen\u00ed nutn\u00e9 kontrolovat ka\u017ed\u00e9 nastaven\u00ed stroje.<\/p>\n<h3>M\u016f\u017eete vypo\u010d\u00edtat mezn\u00ed nosnost \u0159et\u011bzu z jeho mezn\u00ed s\u00edly?<\/h3>\n<p>Nem\u011bli byste po\u010d\u00edtat <a href=\"https:\/\/tuohaihardware.com\/cs\/jaky-je-limit-pracovniho-zatizeni-retezu\/\">mezn\u00ed nosnost (WLL)<\/a> p\u0159\u00edmo z v\u00fdsledku zkou\u0161ky p\u0159etr\u017een\u00ed jednoho \u0159et\u011bzu. Nosnost \u0159et\u011bzu WLL z\u00e1vis\u00ed na p\u0159\u00edslu\u0161n\u00e9 norm\u011b produktu, jakosti \u0159et\u011bzu, zam\u00fd\u0161len\u00e9m pou\u017eit\u00ed a nosnosti uveden\u00e9 v\u00fdrobcem. Nelze ji ur\u010dit pouh\u00fdm vyd\u011blen\u00edm s\u00edly p\u0159etr\u017een\u00ed bezpe\u010dnostn\u00edm faktorem (\u010d\u00edslem pou\u017e\u00edvan\u00fdm k ur\u010den\u00ed bezpe\u010dnostn\u00ed rezervy). Pokud dodavatel neposkytne jasnou nosnost WLL, nem\u011bli byste prov\u00e1d\u011bt vlastn\u00ed v\u00fdpo\u010det a uv\u00e1d\u011bt \u0159et\u011bz do provozu na z\u00e1klad\u011b t\u00e9to hodnoty.<\/p>\n<h2>Z\u00e1v\u011br<\/h2>\n<p>Zkou\u0161ka tahem ukazuje, jak se materi\u00e1l nebo hotov\u00fd v\u00fdrobek chov\u00e1 p\u0159i ta\u017en\u00e9 s\u00edle. Z na\u0161ich praktick\u00fdch zku\u0161enost\u00ed vypl\u00fdv\u00e1, \u017ee jasn\u00e9 uveden\u00ed toho, co testujete a pro\u010d, je d\u016fle\u017eit\u011bj\u0161\u00ed ne\u017e pouh\u00e9 hled\u00e1n\u00ed vy\u0161\u0161\u00ed meze pevnosti v tahu. V\u00fdsledek je u\u017eite\u010dn\u00fd pouze tehdy, kdy\u017e zku\u0161ebn\u00ed metoda odpov\u00edd\u00e1 v\u00fdrobku a jeho zam\u00fd\u0161len\u00e9mu pou\u017eit\u00ed.<\/p>\n<p>Pokud st\u00e1le m\u00e1te ot\u00e1zky ohledn\u011b zkou\u0161ek tahem, po\u017eadovan\u00e9ho zat\u00ed\u017een\u00ed nebo v\u00fdsledk\u016f zkou\u0161ek, m\u016f\u017eete <a href=\"https:\/\/tuohaihardware.com\/cs\/kontaktujte-nas\/\">kontaktujte Tuohai Hardware<\/a>. M\u016f\u017eeme v\u00e1m pomoci porozum\u011bt po\u017eadavk\u016fm na testov\u00e1n\u00ed a v\u00fdsledk\u016fm zkou\u0161ek \u0159et\u011bz\u016f, pru\u017ein a dal\u0161\u00edho kovov\u00e9ho p\u0159\u00edslu\u0161enstv\u00ed na z\u00e1klad\u011b jejich specifikac\u00ed a zam\u00fd\u0161len\u00e9ho pou\u017eit\u00ed. U produkt\u016f, kter\u00e9 vyr\u00e1b\u00edme a dod\u00e1v\u00e1me, m\u016f\u017eeme na z\u00e1klad\u011b objedn\u00e1vky a va\u0161ich po\u017eadavk\u016f poskytnout tak\u00e9 p\u0159\u00edslu\u0161n\u00e9 zku\u0161ebn\u00ed protokoly nebo zku\u0161ebn\u00ed zpr\u00e1vy.<\/p>\n<p>Specifikace produkt\u016f souvisej\u00edc\u00ed s t\u00edmto t\u00e9matem naleznete <a href=\"https:\/\/tuohaihardware.com\/cs\/ocelovy-retez\/privesny-retez\/\">\u0158et\u011bzy p\u0159\u00edv\u011bsu Jak p\u0159ipevnit \u0159et\u011bzy p\u0159\u00edv\u011bsu\uff1f<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>When purchasing chains, springs, or other metal hardware, many buyers ask suppliers for tensile test results. Tensile testing can measure material properties and show how [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":19045,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"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":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","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":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-19040","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Is Tensile Testing? 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