{"id":9582,"date":"2025-06-27T02:00:59","date_gmt":"2025-06-27T02:00:59","guid":{"rendered":"https:\/\/sinoextrud.com\/?p=9582"},"modified":"2025-06-27T02:00:59","modified_gmt":"2025-06-27T02:00:59","slug":"hlinik-7075-vs-hlinik-2024-jake-jsou-rozdily-v-pevnosti","status":"publish","type":"post","link":"https:\/\/sinoextrud.com\/cs\/7075-aluminum-vs-2024-aluminum-what-are-the-strength-differences\/","title":{"rendered":"Hlin\u00edk 7075 vs. hlin\u00edk 2024: Jak\u00e9 jsou rozd\u00edly v pevnosti?"},"content":{"rendered":"<p><figure><img decoding=\"async\" src=\"https:\/\/sinoextrud.com\/wp-content\/uploads\/7003-7050-Aluminum-Profile-Mechanical-Parts.webp\" alt=\"Vysokopevnostn\u00ed hlin\u00edkov\u00fd profil 7075 pro konstruk\u010dn\u00ed aplikace\"><figcaption>Vysokopevnostn\u00ed hlin\u00edkov\u00fd profil 7075 pro statick\u00e9 zat\u00ed\u017een\u00ed<\/figcaption><\/figure>\n<\/p>\n<p>\u010casto se setk\u00e1v\u00e1m s t\u00edm, \u017ee se konstrukt\u00e9\u0159i rozhoduj\u00ed mezi 7075 a 2024. Cht\u011bj\u00ed d\u00edly, kter\u00e9 z\u016fstanou pevn\u00e9 i p\u0159i nam\u00e1h\u00e1n\u00ed.<\/p>\n<p><strong>7075 nab\u00edz\u00ed vy\u0161\u0161\u00ed pevnost v tahu, zat\u00edmco 2024 poskytuje dobrou \u00fanavovou pevnost p\u0159i m\u00edrn\u011b ni\u017e\u0161\u00edm maxim\u00e1ln\u00edm zat\u00ed\u017een\u00ed.<\/strong><\/p>\n<p>Porovnejme tyto dv\u011b vysoce pevn\u00e9 slitiny a jejich p\u0159ednosti.<\/p>\n<hr \/>\n<h2>Jak\u00e9 jsou pevnostn\u00ed rozd\u00edly mezi materi\u00e1ly 7075 a 2024?<\/h2>\n<p>Kdy\u017e jsem za\u010d\u00ednal s v\u00fdrobou leteck\u00fdch sou\u010d\u00e1stek, pou\u017e\u00edval jsem ob\u011b slitiny v kov\u00e1n\u00ed a dr\u017e\u00e1c\u00edch. P\u0159i z\u00e1t\u011b\u017eov\u00fdch testech a \u00fanavov\u00fdch cyklech se chovaly rozd\u00edln\u011b.<\/p>\n<p><strong>7075-T6 m\u00e1 vy\u0161\u0161\u00ed pevnost v tahu (~572 MPa) ne\u017e 2024-T3 (~469 MPa). Ale 2024 m\u00e1 lep\u0161\u00ed \u00fanavovou odolnost p\u0159i cyklick\u00e9m zat\u00ed\u017een\u00ed.<\/strong><\/p>\n<p><figure><img decoding=\"async\" src=\"https:\/\/sinoextrud.com\/wp-content\/uploads\/Aluminum-Extrusion-6061-6082-Automotive-Bumper-Beam.webp\" alt=\"Srovn\u00e1vac\u00ed profily z hlin\u00edku pro pou\u017eit\u00ed v letectv\u00ed a kosmonautice\"><figcaption>Hlin\u00edkov\u00fd profil pro automobilov\u00fd pr\u016fmysl srovn\u00e1vaj\u00edc\u00ed mechanick\u00e9 vlastnosti<\/figcaption><\/figure>\n<\/p>\n<h3>Pono\u0159te se hloub\u011bji: Srovn\u00e1n\u00ed pevnosti v tahu a \u00fanavy<\/h3>\n<h4>Pevnost v tahu (statick\u00e9 zat\u00ed\u017een\u00ed):<\/h4>\n<ul>\n<li><strong>7075-T6<\/strong>: ~572?MPa  <\/li>\n<li><strong>2024-T3<\/strong>: ~469?MPa  <\/li>\n<\/ul>\n<p>7075 je ve statick\u00fdch z\u00e1t\u011b\u017eov\u00fdch testech jednozna\u010dn\u011b pevn\u011bj\u0161\u00ed. \u010casto se pou\u017e\u00edv\u00e1 tam, kde z\u00e1le\u017e\u00ed na maxim\u00e1ln\u00ed nosnosti.<\/p>\n<h4>Mez kluzu (trval\u00e1 deformace):<\/h4>\n<ul>\n<li><strong>7075-T6<\/strong>: ~503?MPa  <\/li>\n<li><strong>2024-T3<\/strong>: ~324?MPa  <\/li>\n<\/ul>\n<p>To znamen\u00e1, \u017ee materi\u00e1l 7075 je odoln\u011bj\u0161\u00ed proti oh\u00fdb\u00e1n\u00ed nebo poddajnosti.<\/p>\n<h4>\u00danavov\u00e1 pevnost (opakovan\u00e9 zat\u00ed\u017een\u00ed):<\/h4>\n<table>\n<thead>\n<tr>\n<th>Slitina<\/th>\n<th>Pevnost v tahu (MPa)<\/th>\n<th>Mez \u00fanavy (MPa)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>7075-T6<\/td>\n<td>~572<\/td>\n<td>~160<\/td>\n<\/tr>\n<tr>\n<td>2024-T3<\/td>\n<td>~469<\/td>\n<td>~200<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Materi\u00e1l 2024 se l\u00e9pe vyrovn\u00e1v\u00e1 s cyklickou \u00fanavou, tak\u017ee je vhodn\u011bj\u0161\u00ed pro d\u00edly vystaven\u00e9 vibrac\u00edm nebo zat\u011b\u017eovac\u00edm cykl\u016fm.<\/p>\n<p>Kdysi jsem vyrobil dva dr\u017e\u00e1ky: jeden ze 7075 a druh\u00fd z 2024. P\u0159i vibra\u010dn\u00edch testech vydr\u017eel dr\u017e\u00e1k z 2024 d\u00e9le bez prasklin, i kdy\u017e nesl men\u0161\u00ed zat\u00ed\u017een\u00ed.<\/p>\n<p><strong>\u010cas na kv\u00edz:<\/strong><br \/>\n<div class=\"claim claim-true\" style=\"background-color: #e6f3e6; border-color: #e6f3e6; color: #2e8b57;\"><p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"transparent\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M20 13c0 5-3.5 7.5-7.66 8.95a1 1 0 0 1-.67-.01C7.5 20.5 4 18 4 13V6a1 1 0 0 1 1-1c2 0 4.5-1.2 6.24-2.72a1.17 1.17 0 0 1 1.52 0C14.51 3.81 17 5 19 5a1 1 0 0 1 1 1z\"\/><path d=\"m9 12 2 2 4-4\"\/><\/svg> <b>7075-T6 m\u00e1 vy\u0161\u0161\u00ed pevnost v tahu ne\u017e 2024-T3.<\/b><span class='claim-true-or-false'>Pravda<\/span><\/p><p class='claim-explanation'>7075-T6 m\u011b\u0159\u00ed p\u0159ibli\u017en\u011b 572?MPa v tahu ve srovn\u00e1n\u00ed s 469?MPa u 2024-T3.<\/p><\/div><br \/>\n<div class=\"claim claim-true\" style=\"background-color: #e6f3e6; border-color: #e6f3e6; color: #2e8b57;\"><p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"transparent\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M20 13c0 5-3.5 7.5-7.66 8.95a1 1 0 0 1-.67-.01C7.5 20.5 4 18 4 13V6a1 1 0 0 1 1-1c2 0 4.5-1.2 6.24-2.72a1.17 1.17 0 0 1 1.52 0C14.51 3.81 17 5 19 5a1 1 0 0 1 1 1z\"\/><path d=\"m9 12 2 2 4-4\"\/><\/svg> <b>2024-T3 m\u00e1 vy\u0161\u0161\u00ed \u00fanavovou odolnost ne\u017e 7075-T6.<\/b><span class='claim-true-or-false'>Pravda<\/span><\/p><p class='claim-explanation'>\u00dadaje ukazuj\u00ed, \u017ee 2024-T3 obvykle vydr\u017e\u00ed v\u00edce cykl\u016f p\u0159ed selh\u00e1n\u00edm.<\/p><\/div><\/p>\n<hr \/>\n<h2>Kter\u00e1 slitina je lep\u0161\u00ed pro leteck\u00e9 d\u00edly?<\/h2>\n<p>P\u0159i navrhov\u00e1n\u00ed leteck\u00fdch sou\u010d\u00e1st\u00ed jsem vyva\u017eoval pevnost, \u00fanavu a vyrobitelnost.<\/p>\n<p><strong>Materi\u00e1l 2024 se d\u00edky sv\u00e9 \u00fanavov\u00e9 \u017eivotnosti pou\u017e\u00edv\u00e1 pro trupov\u00e9 plechy a potahy k\u0159\u00eddel. 7075 je ide\u00e1ln\u00ed pro vysoce nam\u00e1han\u00e9 d\u00edly, jako jsou p\u0159evody a nosn\u00edky.<\/strong><\/p>\n<p><figure><img decoding=\"async\" src=\"https:\/\/sinoextrud.com\/wp-content\/uploads\/6061-Extruded-Aluminum.webp\" alt=\"Hlin\u00edkov\u00fd vytla\u010dovac\u00ed profil 7075 pou\u017e\u00edvan\u00fd v nosn\u00fdch leteck\u00fdch d\u00edlech\"><figcaption>Vysokoz\u00e1t\u011b\u017eov\u00fd profil z leteck\u00e9ho hlin\u00edku pro vytla\u010dov\u00e1n\u00ed<\/figcaption><\/figure>\n<\/p>\n<h3>Pono\u0159te se hloub\u011bji: P\u0159\u00edpady pou\u017eit\u00ed v letectv\u00ed a kosmonautice<\/h3>\n<h4>2024-T3:<\/h4>\n<ul>\n<li>Vynikaj\u00edc\u00ed \u00fanavov\u00e1 pevnost  <\/li>\n<li>Zachov\u00e1v\u00e1 si hou\u017eevnatost p\u0159i n\u00edzk\u00fdch teplot\u00e1ch  <\/li>\n<li>Pou\u017e\u00edv\u00e1 se pro konstruk\u010dn\u00ed pl\u00e1\u0161t\u011b, \u017eebra, kov\u00e1n\u00ed  <\/li>\n<li>n\u00e1chyln\u00e9 ke korozi, pokud nejsou pota\u017eeny nebo opl\u00e1\u0161t\u011bny<\/li>\n<\/ul>\n<h4>7075-T6:<\/h4>\n<ul>\n<li>V\u00fdjime\u010dn\u00e1 statick\u00e1 pevnost  <\/li>\n<li>Pou\u017e\u00edv\u00e1 se pro kov\u00e1n\u00ed podvozku, m\u00edsta s vysok\u00fdm zat\u00ed\u017een\u00edm  <\/li>\n<li>\u00danavov\u00e1 \u017eivotnost je ni\u017e\u0161\u00ed, ale v kr\u00e1tk\u00fdch cyklech p\u0159ijateln\u00e1.  <\/li>\n<li>Pot\u0159ebuje dobrou ochranu proti korozi<\/li>\n<\/ul>\n<h4>P\u0159\u00edklady pou\u017eit\u00ed:<\/h4>\n<ul>\n<li><strong>K\u0159\u00eddeln\u00ed potahy (2024)<\/strong>: dlouh\u00e9 cykly, m\u00edrn\u00e9 zat\u00ed\u017een\u00ed, kritick\u00e1 \u00fanava  <\/li>\n<li><strong>Kov\u00e1n\u00ed podvozku (7075)<\/strong>: vysok\u00e9 statick\u00e9 zat\u00ed\u017een\u00ed, m\u00e9n\u011b cykl\u016f<\/li>\n<\/ul>\n<p>Kdysi jsem postavil dva dr\u017e\u00e1ky: d\u00edl 2024 na potah k\u0159\u00eddla a \u010dl\u00e1nek 7075 na nosnou dr\u00e1hu. Oboj\u00ed spl\u0148ovalo sv\u00e9 konstruk\u010dn\u00ed pot\u0159eby efektivn\u011b.<\/p>\n<p><strong>\u010cas na kv\u00edz:<\/strong><br \/>\n<div class=\"claim claim-false\" style=\"background-color: #f8e6e6; border-color: #f8e6e6; color: #dc143c;\"><p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"transparent\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M20 13c0 5-3.5 7.5-7.66 8.95a1 1 0 0 1-.67-.01C7.5 20.5 4 18 4 13V6a1 1 0 0 1 1-1c2 0 4.5-1.2 6.24-2.72a1.17 1.17 0 0 1 1.52 0C14.51 3.81 17 5 19 5a1 1 0 0 1 1 1z\"\/><path d=\"m14.5 9.5-5 5\"\/><path d=\"m9.5 9.5 5 5\"\/><\/svg> <b>Pro potahy k\u0159\u00eddel se d\u00e1v\u00e1 p\u0159ednost materi\u00e1lu 7075 kv\u016fli jeho \u00fanavov\u00e9 \u017eivotnosti.<\/b><span class='claim-true-or-false'>False<\/span><\/p><p class='claim-explanation'>Pl\u00e1\u0161t\u011b k\u0159\u00eddel pot\u0159ebuj\u00ed \u00fanavovou pevnost, proto se up\u0159ednost\u0148uje materi\u00e1l 2024.<\/p><\/div><br \/>\n<div class=\"claim claim-true\" style=\"background-color: #e6f3e6; border-color: #e6f3e6; color: #2e8b57;\"><p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"transparent\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M20 13c0 5-3.5 7.5-7.66 8.95a1 1 0 0 1-.67-.01C7.5 20.5 4 18 4 13V6a1 1 0 0 1 1-1c2 0 4.5-1.2 6.24-2.72a1.17 1.17 0 0 1 1.52 0C14.51 3.81 17 5 19 5a1 1 0 0 1 1 1z\"\/><path d=\"m9 12 2 2 4-4\"\/><\/svg> <b>Materi\u00e1l 7075 se d\u00edky sv\u00e9 vysok\u00e9 statick\u00e9 pevnosti pou\u017e\u00edv\u00e1 v sou\u010d\u00e1stech podvozku.<\/b><span class='claim-true-or-false'>Pravda<\/span><\/p><p class='claim-explanation'>Podvozky vy\u017eaduj\u00ed vysokou pevnost p\u0159i velk\u00e9m zat\u00ed\u017een\u00ed, pro kter\u00e9 je vhodn\u00fd materi\u00e1l 7075.<\/p><\/div><\/p>\n<hr \/>\n<h2>Jak\u00e1 je odolnost proti korozi?<\/h2>\n<p>Ob\u011b slitiny jsem testoval v soln\u00e9 mlze a ve vlhk\u00e9 komo\u0159e. Chovaly se p\u0159i vystaven\u00ed r\u016fzn\u011b.<\/p>\n<p><strong>Model 2024 je n\u00e1chyln\u011bj\u0161\u00ed ke korozi, zat\u00edmco model 7075 j\u00ed odol\u00e1v\u00e1 o n\u011bco l\u00e9pe, ale oba typy pot\u0159ebuj\u00ed ochrann\u00e9 n\u00e1t\u011bry pro venkovn\u00ed nebo n\u00e1mo\u0159n\u00ed pou\u017eit\u00ed.<\/strong><\/p>\n<p><figure><img decoding=\"async\" src=\"https:\/\/sinoextrud.com\/wp-content\/uploads\/Aluminum-Extrusion-6063-Anodized-Wardrobe-Clothes-Rod-Aluminum-Profile.webp\" alt=\"Hlin\u00edkov\u00fd profil 2024 odoln\u00fd proti \u00fanav\u011b\"><figcaption>Hlin\u00edkov\u00fd profil odoln\u00fd proti \u00fanav\u011b pro vibra\u010dn\u00ed aplikace<\/figcaption><\/figure>\n<\/p>\n<h3>Pono\u0159te se hloub\u011bji: Korozn\u00ed chov\u00e1n\u00ed a ochrana<\/h3>\n<h4>Vnit\u0159n\u00ed odolnost:<\/h4>\n<ul>\n<li><strong>2024<\/strong>: vysok\u00fd obsah m\u011bdi (~4,4%) \u2192 \u0161patn\u00e1 odolnost proti korozi  <\/li>\n<li><strong>7075<\/strong>: vysok\u00fd obsah zinku (~5,6%) \u2192 m\u00edrn\u00e1 odolnost proti korozi, ale n\u00e1chylnost ke korozn\u00edmu prask\u00e1n\u00ed pod nap\u011bt\u00edm<\/li>\n<\/ul>\n<h4>Ochrann\u00e1 o\u0161et\u0159en\u00ed:<\/h4>\n<table>\n<thead>\n<tr>\n<th>Slitina<\/th>\n<th>Neo\u0161et\u0159en\u00e9 riziko koroze<\/th>\n<th>Spole\u010dn\u00e1 ochrana<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>2024<\/td>\n<td>Vysok\u00e1<\/td>\n<td>Opl\u00e1\u0161t\u011bn\u00ed, Alclad, eloxov\u00e1n\u00ed, z\u00e1kladn\u00ed n\u00e1t\u011bry<\/td>\n<\/tr>\n<tr>\n<td>7075<\/td>\n<td>M\u00edrn\u00e1<\/td>\n<td>Alod, tvrd\u00fd elox, tmely<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>Odolnost v\u016f\u010di \u017eivotn\u00edmu prost\u0159ed\u00ed:<\/h4>\n<ul>\n<li><strong>2024<\/strong>: pot\u0159ebuje opl\u00e1\u0161t\u011bn\u00ed nebo siln\u00e9 n\u00e1t\u011bry. Nevhodn\u00e9 pro hol\u00e9 prost\u0159ed\u00ed s vlhk\u00fdm nebo slan\u00fdm vzduchem.  <\/li>\n<li><strong>7075<\/strong>: lep\u0161\u00ed, ale st\u00e1le pot\u0159ebuje eloxov\u00e1n\u00ed nebo tmely, aby se zabr\u00e1nilo korozi v d\u016fsledku nam\u00e1h\u00e1n\u00ed hran.<\/li>\n<\/ul>\n<h4>P\u0159\u00edpad z re\u00e1ln\u00e9ho sv\u011bta:<\/h4>\n<p>Vyrobil jsem dv\u011b kov\u00e1n\u00ed, z ka\u017ed\u00e9 slitiny jedno. Slitinu 2024 jsem nechal holou a 7075 eloxovanou. Ve vlhk\u00fdch m\u011bs\u00edc\u00edch 2024 na okraj\u00edch b\u011bhem n\u011bkolika t\u00fddn\u016f zkorodovala. Eloxovan\u00e1 7075 nevykazovala po l\u00e9ta \u017e\u00e1dnou korozi.<\/p>\n<p><strong>\u010cas na kv\u00edz:<\/strong><br \/>\n<div class=\"claim claim-false\" style=\"background-color: #f8e6e6; border-color: #f8e6e6; color: #dc143c;\"><p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"transparent\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M20 13c0 5-3.5 7.5-7.66 8.95a1 1 0 0 1-.67-.01C7.5 20.5 4 18 4 13V6a1 1 0 0 1 1-1c2 0 4.5-1.2 6.24-2.72a1.17 1.17 0 0 1 1.52 0C14.51 3.81 17 5 19 5a1 1 0 0 1 1 1z\"\/><path d=\"m14.5 9.5-5 5\"\/><path d=\"m9.5 9.5 5 5\"\/><\/svg> <b>Slitina 2024 odol\u00e1v\u00e1 korozi l\u00e9pe ne\u017e slitina 7075.<\/b><span class='claim-true-or-false'>False<\/span><\/p><p class='claim-explanation'>Obsah m\u011bdi v oceli 2024 zvy\u0161uje jej\u00ed n\u00e1chylnost ke korozi.<\/p><\/div><br \/>\n<div class=\"claim claim-true\" style=\"background-color: #e6f3e6; border-color: #e6f3e6; color: #2e8b57;\"><p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"transparent\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M20 13c0 5-3.5 7.5-7.66 8.95a1 1 0 0 1-.67-.01C7.5 20.5 4 18 4 13V6a1 1 0 0 1 1-1c2 0 4.5-1.2 6.24-2.72a1.17 1.17 0 0 1 1.52 0C14.51 3.81 17 5 19 5a1 1 0 0 1 1 1z\"\/><path d=\"m9 12 2 2 4-4\"\/><\/svg> <b>7075 i p\u0159es lep\u0161\u00ed odolnost st\u00e1le pot\u0159ebuje ochranu proti korozi.<\/b><span class='claim-true-or-false'>Pravda<\/span><\/p><p class='claim-explanation'>Odol\u00e1v\u00e1 l\u00e9pe ne\u017e 2024, ale bez povrchov\u00e9 \u00fapravy \u010dasem st\u00e1le koroduje.<\/p><\/div><\/p>\n<hr \/>\n<h2>Kter\u00fd se snadn\u011bji obr\u00e1b\u00ed: 7075 nebo 2024?<\/h2>\n<p>V m\u00e9 d\u00edln\u011b CNC z\u00e1le\u017eelo na obrobitelnosti. Ob\u011b slitiny jsem testoval za stejn\u00fdch podm\u00ednek.<\/p>\n<p><strong>2024 se obr\u00e1b\u00ed snadn\u011bji ne\u017e 7075 - m\u00e9n\u011b se zah\u0159\u00edv\u00e1 a m\u00e1 vy\u0161\u0161\u00ed \u017eivotnost. Ale 7075 tak\u00e9 dob\u0159e \u0159e\u017ee a dr\u017e\u00ed t\u011bsn\u00e9 tolerance.<\/strong><\/p>\n<p><figure><img decoding=\"async\" src=\"https:\/\/sinoextrud.com\/wp-content\/uploads\/Anodizing-Aluminium-Extrusion-Profiles-for-Windows-and-Door.webp\" alt=\"eloxovan\u00fd hlin\u00edkov\u00fd profil odoln\u00fd proti korozi\"><figcaption>eloxovan\u00fd hlin\u00edkov\u00fd profil pro ochranu proti korozi<\/figcaption><\/figure>\n<\/p>\n<h3>Pono\u0159te se hloub\u011bji: V\u00fdkonnost obr\u00e1b\u011bn\u00ed a tipy<\/h3>\n<h4>Tvorba t\u0159\u00edsek a opot\u0159eben\u00ed n\u00e1stroje:<\/h4>\n<ul>\n<li><strong>2024-T3<\/strong>: m\u011bk\u010d\u00ed, tvo\u0159\u00ed dlouh\u00e9 t\u0159\u00edsky, snadno se \u0159e\u017ee, dobr\u00e1 povrchov\u00e1 \u00faprava  <\/li>\n<li><strong>7075-T6<\/strong>: tvrd\u0161\u00ed, t\u0159\u00edsky b\u00fdvaj\u00ed kr\u00e1tk\u00e9 a abrazivn\u00ed, rychlej\u0161\u00ed opot\u0159eben\u00ed n\u00e1stroje, pot\u0159ebuje tuh\u00e9 se\u0159\u00edzen\u00ed<\/li>\n<\/ul>\n<h4>Tolerance a povrchov\u00e1 \u00faprava:<\/h4>\n<ul>\n<li>Ob\u011b za\u0159\u00edzen\u00ed dr\u017e\u00ed \u00b10,01?mm s dobr\u00fdm n\u00e1\u0159ad\u00edm a chladic\u00ed kapalinou.  <\/li>\n<li>2024 \u010dasto poskytuje hlad\u0161\u00ed povrchov\u00e9 \u00fapravy d\u00edky men\u0161\u00ed tvrdosti.<\/li>\n<\/ul>\n<h4>Z\u00e1vitov\u00e1n\u00ed a \u0159ez\u00e1n\u00ed z\u00e1vit\u016f:<\/h4>\n<ul>\n<li>2024 dob\u0159e odbo\u010duje  <\/li>\n<li>7075 pot\u0159ebuje ni\u017e\u0161\u00ed rychlosti z\u00e1vitn\u00edk\u016f a z\u00e1vitn\u00edky se smykov\u00fdm tvarem.<\/li>\n<\/ul>\n<h4>Tipy pro fr\u00e9zov\u00e1n\u00ed a vrt\u00e1n\u00ed:<\/h4>\n<ul>\n<li><strong>2024<\/strong>: zat\u00ed\u017een\u00ed t\u0159\u00edsek 0,3 mm, rychlost 250-300 m\/min  <\/li>\n<li><strong>7075<\/strong>: 0,2 mm t\u0159\u00edsky, rychlost 200 m\/min, zaplaven\u00ed chladic\u00ed kapalinou.<\/li>\n<\/ul>\n<h4>V\u00fdsledky m\u00e9ho testu v obchod\u011b:<\/h4>\n<p>Provozoval jsem vedle sebe sloty 2024 a 7075. N\u00e1stroje z 2024 vydr\u017eely ~200?minut p\u0159ed otupen\u00edm \u00d72 d\u00e9le ne\u017e v 7075.<\/p>\n<p><strong>\u010cas na kv\u00edz:<\/strong><br \/>\n<div class=\"claim claim-false\" style=\"background-color: #f8e6e6; border-color: #f8e6e6; color: #dc143c;\"><p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"transparent\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M20 13c0 5-3.5 7.5-7.66 8.95a1 1 0 0 1-.67-.01C7.5 20.5 4 18 4 13V6a1 1 0 0 1 1-1c2 0 4.5-1.2 6.24-2.72a1.17 1.17 0 0 1 1.52 0C14.51 3.81 17 5 19 5a1 1 0 0 1 1 1z\"\/><path d=\"m14.5 9.5-5 5\"\/><path d=\"m9.5 9.5 5 5\"\/><\/svg> <b>2024 se obr\u00e1b\u00ed h\u016f\u0159e ne\u017e 7075.<\/b><span class='claim-true-or-false'>False<\/span><\/p><p class='claim-explanation'>M\u011bk\u010d\u00ed slo\u017een\u00ed materi\u00e1lu 2024 usnad\u0148uje jeho obr\u00e1b\u011bn\u00ed.<\/p><\/div><br \/>\n<div class=\"claim claim-true\" style=\"background-color: #e6f3e6; border-color: #e6f3e6; color: #2e8b57;\"><p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"transparent\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M20 13c0 5-3.5 7.5-7.66 8.95a1 1 0 0 1-.67-.01C7.5 20.5 4 18 4 13V6a1 1 0 0 1 1-1c2 0 4.5-1.2 6.24-2.72a1.17 1.17 0 0 1 1.52 0C14.51 3.81 17 5 19 5a1 1 0 0 1 1 1z\"\/><path d=\"m9 12 2 2 4-4\"\/><\/svg> <b>7075 zp\u016fsobuje v\u011bt\u0161\u00ed opot\u0159eben\u00ed n\u00e1stroje ne\u017e 2024.<\/b><span class='claim-true-or-false'>Pravda<\/span><\/p><p class='claim-explanation'>Jeho tvrdost vede k rychlej\u0161\u00edmu od\u011bru n\u00e1stroje.<\/p><\/div><\/p>\n<hr \/>\n<h2>Z\u00e1v\u011br<\/h2>\n<p>Materi\u00e1l 7075 je pevn\u011bj\u0161\u00ed p\u0159i statick\u00e9m zat\u00ed\u017een\u00ed a je vhodn\u011bj\u0161\u00ed pro vysoce nam\u00e1han\u00e9 sou\u010d\u00e1sti. Sou\u010d\u00e1st 2024 m\u00e1 lep\u0161\u00ed \u00fanavovou \u017eivotnost p\u0159i opakovan\u00e9m zat\u00ed\u017een\u00ed. Oba typy pot\u0159ebuj\u00ed ochranu proti korozi a model 2024 se snadn\u011bji obr\u00e1b\u00ed. Vyb\u00edrejte podle typu zat\u00ed\u017een\u00ed, prost\u0159ed\u00ed a pot\u0159eb obr\u00e1b\u011bn\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"<p>High-strength 7075 aluminum profile for static load applications I often see engineers torn between 7075 and 2024. They want parts that stay strong under stress. 7075 offers higher tensile strength, while 2024 gives good fatigue strength with slightly lower maximum load. Let\u2019s compare these two high-strength alloys and where each shines. What are the strength [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":7899,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"none","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"both","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"footnotes":""},"categories":[1],"tags":[],"class_list":["post-9582","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-custom-mold"],"meta_box":{"post-to-quiz_to":[]},"_links":{"self":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/posts\/9582","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/comments?post=9582"}],"version-history":[{"count":0,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/posts\/9582\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/media\/7899"}],"wp:attachment":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/media?parent=9582"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/categories?post=9582"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/tags?post=9582"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}