{"id":3984,"date":"2023-06-06T04:23:41","date_gmt":"2023-06-06T04:23:41","guid":{"rendered":"https:\/\/china-maching.com\/?p=3984"},"modified":"2023-08-29T02:00:24","modified_gmt":"2023-08-29T02:00:24","slug":"uns-s31803-everything-you-need-to-know-about-duplex-stainless-steel","status":"publish","type":"post","link":"https:\/\/china-maching.com\/cs\/uns-s31803-vse-co-potrebujete-vedet-o-duplexni-nerezove-oceli\/","title":{"rendered":"UNS S31803: V\u0161e, co pot\u0159ebujete v\u011bd\u011bt o duplexn\u00ed nerezov\u00e9 oceli"},"content":{"rendered":"<h2>Co je UNS S31803?<\/h2>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-3987\" src=\"https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/002-3.png\" alt=\"Co je UNS S31803?\" width=\"512\" height=\"512\" srcset=\"https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/002-3.png 512w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/002-3-300x300.png 300w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/002-3-150x150.png 150w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/002-3-100x100.png 100w\" sizes=\"(max-width: 512px) 100vw, 512px\"><\/p>\n<p>Duplexn\u00ed nerezov\u00e1 ocel UNS S31803 je druh oceli, kter\u00e1 se skl\u00e1d\u00e1 ze dvou f\u00e1z\u00ed: austenitick\u00e9 a feritick\u00e9. Byl vyvinut ve 30. a 40. letech 20. stolet\u00ed jako reakce na pot\u0159ebu oceli, kter\u00e1 odol\u00e1 drsn\u00fdm podm\u00ednk\u00e1m petrochemick\u00e9ho pr\u016fmyslu. Jeho jedine\u010dn\u00e9 slo\u017een\u00ed mu d\u00e1v\u00e1 vynikaj\u00edc\u00ed odolnost proti korozi, pevnost a elasticitu.<\/p>\n<h3>Chemick\u00e9 slo\u017een\u00ed UNS S31803<\/h3>\n<p>Chemick\u00e9 slo\u017een\u00ed duplexn\u00ed nerezov\u00e9 oceli UNS S31803 je vysoce komplexn\u00ed a skl\u00e1d\u00e1 se z r\u016fzn\u00fdch prvk\u016f, kter\u00e9 spole\u010dn\u011b vytv\u00e1\u0159ej\u00ed charakteristick\u00e9 vlastnosti. Mezi hlavn\u00ed slo\u017eky pat\u0159\u00ed chrom (21-23%), nikl (4,5-6,5%), molybden (2,5-3,5%), dus\u00edk (0,08-0,2%) a \u017eelezo (zbytek). Tyto prvky spolupracuj\u00ed na vytvo\u0159en\u00ed oceli vysoce odoln\u00e9 v\u016f\u010di korozi, zejm\u00e9na v drsn\u00fdch prost\u0159ed\u00edch, jako je mo\u0159sk\u00e1 voda, kysel\u00e9 slou\u010deniny a chloridy.<\/p>\n<h3>Mechanick\u00e9 vlastnosti UNS S31803<\/h3>\n<p>UNS S31803 <a class=\"wpil_keyword_link\" href=\"https:\/\/china-maching.com\/cs\/proc-je-duplexni-nerezova-ocel-materialem-volby-pro-prumyslove-aplikace\/\" target=\"_blank\" rel=\"noopener\" title=\"duplexn\u00ed nerezov\u00e1 ocel\" data-wpil-keyword-link=\"linked\">duplexn\u00ed nerezov\u00e1 ocel<\/a> je zn\u00e1m\u00e1 svou vysokou mechanickou pevnost\u00ed, poskytuje 450 MPa a pevnost v tahu 620 MPa. Jeho tvrdost je tak\u00e9 velmi vysok\u00e1, s maxim\u00e1ln\u00ed hodnotou 290 HV. Nav\u00edc je vysoce kujn\u00fd, s ta\u017enost\u00ed 25% nebo v\u00edce. Mechanick\u00e9 vlastnosti UNS S31803 jsou ovlivn\u011bny teplotou s v\u00fdrazn\u00fdm poklesem pevnosti a pru\u017enosti p\u0159i vysok\u00fdch teplot\u00e1ch.<\/p>\n<h3>Fyzik\u00e1ln\u00ed vlastnosti UNS S31803<\/h3>\n<p>Krom\u011b sv\u00fdch mechanick\u00fdch vlastnost\u00ed m\u00e1 duplexn\u00ed nerezov\u00e1 ocel UNS S31803 jedine\u010dn\u00e9 fyzik\u00e1ln\u00ed vlastnosti, d\u00edky \u010demu\u017e je vysoce v\u00fdkonn\u00fdm materi\u00e1lem. Jeho hustota je 7,8 g\/cm3, co\u017e ho \u010din\u00ed pom\u011brn\u011b t\u011b\u017ek\u00fdm. Ocel m\u00e1 vynikaj\u00edc\u00ed tepelnou vodivost s koeficientem tepeln\u00e9 rozta\u017enosti 13,5 \u03bcm\/m\u00b0C a m\u011brnou tepelnou kapacitou 0,46 J\/g\u00b0C. Jeho elektrick\u00e1 vodivost je tak\u00e9 dobr\u00e1, s m\u011brn\u00fdm odporem p\u0159ibli\u017en\u011b 1,74 \u03bc\u03a9\u00b7m.<\/p>\n<h3>Aplikace UNS S31803 Duplex Stainless Steel<\/h3>\n<p>Duplexn\u00ed nerezov\u00e1 ocel UNS S31803 se pou\u017e\u00edv\u00e1 v \u0161irok\u00e9 \u0159ad\u011b aplikac\u00ed, zejm\u00e9na ve v\u00fdrobn\u00edch za\u0159\u00edzen\u00edch a konstrukc\u00edch vy\u017eaduj\u00edc\u00edch vysok\u00e9 <a class=\"wpil_keyword_link\" href=\"https:\/\/china-maching.com\/cs\/konecny-pruvodce-odolnosti-proti-korozi\/\" target=\"_blank\" rel=\"noopener\" title=\"odolnost proti korozi\" data-wpil-keyword-link=\"linked\">odolnost proti korozi<\/a>. D\u00edky sv\u00fdm vlastnostem je ide\u00e1ln\u00ed pro pou\u017eit\u00ed v petrochemick\u00e9m, chemick\u00e9m a ropn\u00e9m a plyn\u00e1rensk\u00e9m pr\u016fmyslu a v n\u00e1mo\u0159n\u00edch, celul\u00f3zov\u00fdch, pap\u00edrensk\u00fdch a potravin\u00e1\u0159sk\u00fdch aplikac\u00edch. Specifick\u00e9 aplikace zahrnuj\u00ed n\u00e1dr\u017ee, potrub\u00ed, v\u00fdm\u011bn\u00edky tepla a ventily.<\/p>\n<h3>V\u00fdhody pou\u017eit\u00ed UNS S31803 v pr\u016fmyslov\u00fdch aplikac\u00edch<\/h3>\n<p>Pou\u017eit\u00ed duplexn\u00ed nerezov\u00e9 oceli UNS S31803 v pr\u016fmyslov\u00fdch aplikac\u00edch m\u00e1 \u0159adu v\u00fdhod. Nab\u00edz\u00ed vynikaj\u00edc\u00ed odolnost proti korozi, zejm\u00e9na v drsn\u00e9m prost\u0159ed\u00ed. D\u00edky vysok\u00e9 mechanick\u00e9 pevnosti a pru\u017enosti je ide\u00e1ln\u00ed pro aplikace s vysok\u00fdm nam\u00e1h\u00e1n\u00edm. Nav\u00edc je to cenov\u011b v\u00fdhodn\u00fd materi\u00e1l d\u00edky sv\u00e9 dlouh\u00e9 \u017eivotnosti a odolnosti proti opot\u0159eben\u00ed. Jeho v\u0161estrannost s r\u016fzn\u00fdmi typy chemik\u00e1li\u00ed, teplotami a tlaky z n\u011bj \u010din\u00ed obl\u00edben\u00fd materi\u00e1l pro in\u017een\u00fdry a design\u00e9ry v pr\u016fmyslov\u00fdch a komer\u010dn\u00edch sektorech.<\/p>\n<h2>Jak\u00e9 jsou vlastnosti duplexn\u00ed nerezov\u00e9 oceli?<\/h2>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-3988\" src=\"https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/003-3.png\" alt=\"Jak\u00e9 jsou vlastnosti duplexn\u00ed nerezov\u00e9 oceli?\" width=\"512\" height=\"512\" srcset=\"https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/003-3.png 512w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/003-3-300x300.png 300w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/003-3-150x150.png 150w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/003-3-100x100.png 100w\" sizes=\"(max-width: 512px) 100vw, 512px\"><\/p>\n<p>Tento typ kovu je charakteristick\u00fd sv\u00fdm jedine\u010dn\u00fdm slo\u017een\u00edm p\u0159i definov\u00e1n\u00ed duplexn\u00ed nerezov\u00e9 oceli. Duplexn\u00ed nerezov\u00e1 ocel je tvo\u0159ena kombinac\u00ed austenitick\u00e9 a <a class=\"wpil_keyword_link\" href=\"https:\/\/china-maching.com\/cs\/feriticke-nerezove-oceli-klicove-vlastnosti-vyhody-a-aplikace\/\" target=\"_blank\" rel=\"noopener\" title=\"feritick\u00e1 nerezov\u00e1 ocel\" data-wpil-keyword-link=\"linked\">feritick\u00e1 nerezov\u00e1 ocel<\/a>, co\u017e mu d\u00e1v\u00e1 kvality z obou typ\u016f. To d\u00e1v\u00e1 duplexn\u00ed nerezov\u00e9 oceli bezkonkuren\u010dn\u00ed pevnost, odolnost proti korozi a trvanlivost. Na rozd\u00edl od jin\u00fdch typ\u016f nerezov\u00e9 oceli, duplexn\u00ed nerezov\u00e1 ocel ned\u011bl\u00e1 kompromisy v \u017e\u00e1dn\u00e9 oblasti, tak\u017ee je perfektn\u00ed volbou pro r\u016fzn\u00e9 aplikace.<\/p>\n<h3>Odolnost proti korozi duplexn\u00ed nerezov\u00e9 oceli<\/h3>\n<p>Jednou z nejcenn\u011bj\u0161\u00edch vlastnost\u00ed duplexn\u00ed nerezov\u00e9 oceli je jej\u00ed pozoruhodn\u00e1 odolnost proti korozi. Tento kov je odoln\u00fd v\u016f\u010di r\u016fzn\u00fdm typ\u016fm zne\u010di\u0161t\u011bn\u00ed, jako je stresov\u00e1 koroze, prask\u00e1n\u00ed a d\u016flkov\u00e1 koroze. Duplexn\u00ed nerezov\u00e1 ocel p\u0159ekon\u00e1v\u00e1 tradi\u010dn\u00ed nerezovou ocel v mo\u0159sk\u00e9 vod\u011b a kysel\u00e9m chemick\u00e9m prost\u0159ed\u00ed, kde by standardn\u00ed nerezov\u00e1 ocel podlehla zka\u017een\u00ed. S takov\u00fdmi vynikaj\u00edc\u00edmi vlastnostmi odoln\u00fdmi proti korozi se duplexn\u00ed nerezov\u00e1 ocel pou\u017e\u00edv\u00e1 v r\u016fzn\u00fdch aplikac\u00edch v ropn\u00e9m a plyn\u00e1rensk\u00e9m pr\u016fmyslu, chemick\u00fdch z\u00e1vodech a n\u00e1mo\u0159n\u00edch aplikac\u00edch.<\/p>\n<h3>Sva\u0159ov\u00e1n\u00ed duplexn\u00ed nerezov\u00e9 oceli<\/h3>\n<p>Postup sva\u0159ov\u00e1n\u00ed duplexn\u00ed nerezov\u00e9 oceli m\u00e1 n\u011bkter\u00e9 dal\u0161\u00ed slo\u017eitosti ve srovn\u00e1n\u00ed s jin\u00fdmi typy nerezov\u00e9 oceli. Proces m\u016f\u017ee vy\u017eadovat specifick\u00fd typ p\u0159\u00eddavn\u00e9ho kovu a jsou nezbytn\u00e9 pe\u010dliv\u00e9 p\u0159edsva\u0159ovac\u00ed operace, aby se zabr\u00e1nilo deformaci a prask\u00e1n\u00ed. Pro zachov\u00e1n\u00ed duplexn\u00ed struktury je t\u0159eba v\u011bnovat pe\u010dlivou pozornost teplot\u011b sva\u0159ov\u00e1n\u00ed. P\u0159i spr\u00e1vn\u00e9m procesu sva\u0159ov\u00e1n\u00ed v\u0161ak mohou b\u00fdt zachov\u00e1ny vynikaj\u00edc\u00ed mechanick\u00e9 vlastnosti duplexn\u00ed nerezov\u00e9 oceli, d\u00edky \u010demu\u017e je kov vhodn\u00fd pro pou\u017eit\u00ed ve vysokotlak\u00fdch aplikac\u00edch a teplot\u00e1ch pod nulou.<\/p>\n<h3>\u017d\u00edh\u00e1n\u00ed duplexn\u00ed nerezov\u00e9 oceli<\/h3>\n<p>Proces \u017e\u00edh\u00e1n\u00ed zlep\u0161uje pru\u017enost a hou\u017eevnatost duplexn\u00ed nerezov\u00e9 oceli. Proces \u017e\u00edh\u00e1n\u00ed se typicky prov\u00e1d\u00ed p\u0159i zv\u00fd\u0161en\u00fdch teplot\u00e1ch, kolem 1050\u00b0 Celsia, po ur\u010ditou dobu. Tento proces pom\u00e1h\u00e1 obnovit mikrostrukturu kovu a eliminovat jak\u00fdkoli austenit, kter\u00fd se mohl p\u0159em\u011bnit na martenzit v d\u016fsledku leguj\u00edc\u00edch prvk\u016f, kter\u00e9 m\u011bn\u00ed strukturu kovu. \u017d\u00edh\u00e1n\u00ed duplexn\u00ed nerezov\u00e9 oceli navrac\u00ed kov do p\u016fvodn\u00edho stavu a usnad\u0148uje jeho tvarov\u00e1n\u00ed a zpracov\u00e1n\u00ed.<\/p>\n<h3>Tepeln\u00e9 zpracov\u00e1n\u00ed duplexn\u00ed nerezov\u00e9 oceli<\/h3>\n<div class=\"internal-linking-related-contents-pro\"><a href=\"https:\/\/china-maching.com\/cs\/komplexni-pruvodce-kreslenim-cad-pro-cnc-stroj\/\" class=\"template-9\"><img width=\"200\" height=\"200\" src=\"https:\/\/china-maching.com\/wp-content\/uploads\/2023\/05\/1-8.png\" class=\"alignleft wp-post-image\" alt=\"Komplexn\u00ed pr\u016fvodce CAD v\u00fdkresem pro CNC stroj\" srcset=\"https:\/\/china-maching.com\/wp-content\/uploads\/2023\/05\/1-8.png 512w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/05\/1-8-300x300.png 300w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/05\/1-8-150x150.png 150w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/05\/1-8-100x100.png 100w\" sizes=\"(max-width: 200px) 100vw, 200px\"><div class=\"postTitle\"><span><strong>Pokra\u010dovat ve \u010dten\u00ed<\/strong>Komplexn\u00ed pr\u016fvodce CAD v\u00fdkresem pro CNC stroj<\/span><\/div><\/a><\/div><p>Duplexn\u00ed nerezov\u00e1 ocel m\u016f\u017ee podstoupit tepeln\u00e9 zpracov\u00e1n\u00ed, aby se zlep\u0161ily jej\u00ed mechanick\u00e9 vlastnosti. Tento proces umo\u017e\u0148uje lep\u0161\u00ed pevnost, hou\u017eevnatost a pru\u017enost. Tento proces zahrnuje zah\u0159\u00e1t\u00ed kovu na ur\u010ditou teplotu a jeho n\u00e1sledn\u00e9 dr\u017een\u00ed po p\u0159edem stanovenou dobu. P\u0159esn\u00fd proces tepeln\u00e9ho zpracov\u00e1n\u00ed se bude li\u0161it v z\u00e1vislosti na typu pou\u017eit\u00e9 duplexn\u00ed nerezov\u00e9 oceli. Tepeln\u00e9 zpracov\u00e1n\u00ed umo\u017e\u0148uje pou\u017eit\u00ed duplexn\u00ed nerezov\u00e9 oceli ve vysoce pevn\u00fdch aplikac\u00edch, jako jsou stroje pro p\u0159en\u00e1\u0161en\u00ed n\u00e1kladu, pr\u016fmyslov\u00e9 v\u00fdm\u011bn\u00edky tepla a za\u0159\u00edzen\u00ed pro t\u011b\u017ebu ropy a zemn\u00edho plynu na mo\u0159i.<\/p>\n<h3>Mikrostruktura duplexn\u00ed nerezov\u00e9 oceli<\/h3>\n<p>Mikrostruktura duplexn\u00ed nerezov\u00e9 oceli se skl\u00e1d\u00e1 z austenitov\u00e9 i feritick\u00e9 f\u00e1ze. To vytv\u00e1\u0159\u00ed jedine\u010dnou mikrostrukturu, kter\u00e1 p\u0159isp\u00edv\u00e1 k mechanick\u00fdm a fyzik\u00e1ln\u00edm vlastnostem kovu, v\u010detn\u011b zv\u00fd\u0161en\u00e9 pevnosti a odolnosti proti korozi. Duplexn\u00ed nerezov\u00e1 ocel m\u00e1 charakteristickou dvouf\u00e1zovou mikrostrukturu, d\u00edky \u010demu\u017e je jedine\u010dn\u00e1 ve srovn\u00e1n\u00ed s austenitick\u00fdmi a feritick\u00fdmi nerezov\u00fdmi ocelmi. Mikrostruktura duplexn\u00ed nerezov\u00e9 oceli tak\u00e9 hraje roli v odolnosti kovu v\u016f\u010di prask\u00e1n\u00ed koroz\u00ed pod nap\u011bt\u00edm, tak\u017ee je ide\u00e1ln\u00ed volbou pro drsn\u00e1 prost\u0159ed\u00ed.<\/p>\n<h2>Jak\u00e9 jsou t\u0159\u00eddy a specifikace duplexn\u00ed nerezov\u00e9 oceli?<\/h2>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-3989\" src=\"https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/004-2.png\" alt=\"Jak\u00e9 jsou t\u0159\u00eddy a specifikace duplexn\u00ed nerezov\u00e9 oceli?\" width=\"512\" height=\"512\" srcset=\"https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/004-2.png 512w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/004-2-300x300.png 300w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/004-2-150x150.png 150w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/004-2-100x100.png 100w\" sizes=\"(max-width: 512px) 100vw, 512px\"><\/p>\n<p>Duplexn\u00ed nerezov\u00e1 ocel je druh nerezov\u00e9 oceli obsahuj\u00edc\u00ed ve sv\u00e9 mikrostruktu\u0159e kombinaci austenitick\u00fdch a feritick\u00fdch zrn. Tato jedine\u010dn\u00e1 struktura poskytuje duplexn\u00ed nerezovou ocel s vynikaj\u00edc\u00ed pevnost\u00ed a odolnost\u00ed proti korozi, tak\u017ee je ide\u00e1ln\u00ed pro n\u00e1ro\u010dn\u00e9 aplikace.<\/p>\n<h3>Duplex S32205 vs. S31803<\/h3>\n<p>Duplex S32205 a S31803 jsou dv\u011b nejb\u011b\u017en\u011bji pou\u017e\u00edvan\u00e9 duplexn\u00ed t\u0159\u00eddy nerezov\u00e9 oceli. I kdy\u017e jsou slo\u017een\u00edm velmi podobn\u00e9, p\u0159i v\u00fdb\u011bru d\u00e1vky pro konkr\u00e9tn\u00ed aplikaci je d\u016fle\u017eit\u00e9 zv\u00e1\u017eit n\u011bkolik kl\u00ed\u010dov\u00fdch rozd\u00edl\u016f mezi nimi. Duplex S32205 nab\u00edz\u00ed vy\u0161\u0161\u00ed odolnost proti korozi a lep\u0161\u00ed pevnost ne\u017e S31803, d\u00edky \u010demu\u017e je ide\u00e1ln\u00ed pro aplikace, kde je rozhoduj\u00edc\u00ed \u017eivotnost a odolnost v\u016f\u010di korozi.<\/p>\n<h3>Druhy duplexn\u00ed nerezov\u00e9 oceli<\/h3>\n<p>Krom\u011b S32205 a S31803 je k dispozici n\u011bkolik dal\u0161\u00edch druh\u016f duplexn\u00ed nerezov\u00e9 oceli s jedine\u010dn\u00fdm slo\u017een\u00edm a vlastnostmi. Nap\u0159\u00edklad Duplex 2205 je t\u0159\u00edda duplexn\u00ed nerezov\u00e9 oceli, kter\u00e1 nab\u00edz\u00ed vynikaj\u00edc\u00ed odolnost proti prask\u00e1n\u00ed koroz\u00ed pod nap\u011bt\u00edm a \u010dasto se pou\u017e\u00edv\u00e1 v chemick\u00e9m zpracovatelsk\u00e9m pr\u016fmyslu. Mezit\u00edm je Duplex 2304 nekvalitn\u00ed duplexn\u00ed nerezov\u00e1 ocel, kter\u00e1 je cenov\u011b dostupn\u011bj\u0161\u00ed a dob\u0159e se hod\u00ed pro aplikace, kde je hlavn\u00edm probl\u00e9mem cena. P\u0159ed v\u00fdb\u011brem je nezbytn\u00e9 zv\u00e1\u017eit jedine\u010dn\u00e9 vlastnosti a zam\u00fd\u0161len\u00e9 aplikace ka\u017ed\u00e9 duplexn\u00ed nerezov\u00e9 oceli.<\/p>\n<h3>ASTM specifikace pro duplexn\u00ed nerezovou ocel<\/h3>\n<p>Americk\u00e1 spole\u010dnost pro testov\u00e1n\u00ed a materi\u00e1ly (ASTM) stanovila n\u011bkolik specifikac\u00ed pro duplexn\u00ed nerezovou ocel, aby byla zaji\u0161t\u011bna jednotnost a kvalita p\u0159i jej\u00ed v\u00fdrob\u011b a pou\u017eit\u00ed. Tyto normy pokr\u00fdvaj\u00ed v\u0161e od mechanick\u00fdch vlastnost\u00ed a chemick\u00e9ho slo\u017een\u00ed a\u017e po tepeln\u00e9 zpracov\u00e1n\u00ed a zku\u0161ebn\u00ed metody. ASTM A240 a ASTM A276 jsou standardn\u00ed specifikace pro duplexn\u00ed nerezovou ocel, popisuj\u00edc\u00ed po\u017eadavky na plechy, plechy a ty\u010de v\u00e1lcovan\u00e9 za tepla a za studena.<\/p>\n<h3>Rozd\u00edl mezi duplexn\u00ed a austenitickou nerezovou ocel\u00ed<\/h3>\n<p>Zat\u00edmco duplexn\u00ed a <a class=\"wpil_keyword_link\" href=\"https:\/\/china-maching.com\/cs\/austeniticka-nerezova-ocel-vse-co-potrebujete-vedet\/\" target=\"_blank\" rel=\"noopener\" title=\"austenitick\u00e9 nerezov\u00e9 oceli\" data-wpil-keyword-link=\"linked\">austenitick\u00e9 nerezov\u00e9 oceli<\/a> mohou vypadat podobn\u011b, maj\u00ed v\u00fdrazn\u00e9 rozd\u00edly ve sv\u00e9m chemick\u00e9m slo\u017een\u00ed a mikrostruktu\u0159e. Austenitick\u00e1 nerezov\u00e1 ocel se skl\u00e1d\u00e1 p\u0159edev\u0161\u00edm z austenitov\u00fdch zrn a m\u00e1 vynikaj\u00edc\u00ed odolnost proti korozi, ale nemus\u00ed b\u00fdt tak pevn\u00e1 jako duplexn\u00ed nerezov\u00e1 ocel. Duplexn\u00ed nerezov\u00e1 ocel naopak obsahuje austenitick\u00e1 i feritick\u00e1 zrna, kter\u00e1 nab\u00edz\u00ed vynikaj\u00edc\u00ed pevnost a odolnost proti korozi. Nav\u00edc austenitick\u00e1 nerezov\u00e1 ocel je nemagnetick\u00e1, zat\u00edmco duplexn\u00ed nerezov\u00e1 ocel m\u016f\u017ee vykazovat n\u011bkter\u00e9 magnetick\u00e9 vlastnosti.<\/p>\n<h3>Feriticko-austenitick\u00e9 t\u0159\u00eddy duplexn\u00ed nerezov\u00e9 oceli<\/h3>\n<p>Feriticko-austenitick\u00e9 t\u0159\u00eddy duplexn\u00ed nerezov\u00e9 oceli, zn\u00e1m\u00e9 tak\u00e9 jako super duplexn\u00ed nerezov\u00e1 ocel, obsahuj\u00ed je\u0161t\u011b vy\u0161\u0161\u00ed hladiny chr\u00f3mu, molybdenu a dus\u00edku ne\u017e standardn\u00ed duplexn\u00ed nerezov\u00e1 ocel. Toto vylep\u0161en\u00e9 slo\u017een\u00ed poskytuje vynikaj\u00edc\u00ed odolnost proti korozi a pevnost, tak\u017ee je ide\u00e1ln\u00ed pro pou\u017eit\u00ed v extr\u00e9mn\u00edch prost\u0159ed\u00edch, jako jsou ropn\u00e9 plo\u0161iny na mo\u0159i a chemick\u00e9 zpracovatelsk\u00e9 z\u00e1vody. P\u0159\u00edklady feriticko-austenitick\u00fdch t\u0159\u00edd duplexn\u00ed nerezov\u00e9 oceli zahrnuj\u00ed Duplex S32750 a Duplex S32760, kter\u00e9 vykazuj\u00ed vynikaj\u00edc\u00ed odolnost proti d\u016flkov\u00e9 a \u0161t\u011brbinov\u00e9 korozi.<\/p>\n<h2>Jak\u00e9 jsou kl\u00ed\u010dov\u00e9 vlastnosti duplexn\u00ed nerezov\u00e9 oceli?<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3990\" src=\"https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/005-2.png\" alt=\"Jak\u00e9 jsou kl\u00ed\u010dov\u00e9 vlastnosti duplexn\u00ed nerezov\u00e9 oceli?\" width=\"512\" height=\"512\" srcset=\"https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/005-2.png 512w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/005-2-300x300.png 300w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/005-2-150x150.png 150w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/005-2-100x100.png 100w\" sizes=\"(max-width: 512px) 100vw, 512px\"><\/p>\n<p>Duplexn\u00ed nerezov\u00e1 ocel je druh nerezov\u00e9 oceli, kter\u00e1 obsahuje kombinaci austenitick\u00fdch a feritick\u00fdch mikrostruktur. Zahrnuje p\u0159ibli\u017en\u011b stejn\u00e9 pod\u00edly obou struktur, co\u017e mu d\u00e1v\u00e1 jedine\u010dnou rovnov\u00e1hu mezi pevnost\u00ed, pru\u017enost\u00ed a odolnost\u00ed proti korozi. D\u00edky sv\u00e9mu duplexn\u00edmu syst\u00e9mu se m\u016f\u017ee pochlubit vylep\u0161en\u00fdmi mechanick\u00fdmi vlastnostmi a vysokou odolnost\u00ed proti korozi, d\u00edky \u010demu\u017e je ide\u00e1ln\u00ed pro kritick\u00e9 aplikace v r\u016fzn\u00fdch pr\u016fmyslov\u00fdch odv\u011btv\u00edch. Tento typ oceli se b\u011b\u017en\u011b pou\u017e\u00edv\u00e1 v aplikac\u00edch, kde je z\u00e1sadn\u00ed vysok\u00e1 pevnost, dobr\u00e1 sva\u0159itelnost a vynikaj\u00edc\u00ed odolnost proti korozi.<\/p>\n<h3>Odolnost proti korozi duplexn\u00ed nerezov\u00e9 oceli<\/h3>\n<p>V\u00fdjime\u010dn\u00e1 korozn\u00ed odolnost duplexn\u00ed nerezov\u00e9 oceli je jednou z jej\u00edch definuj\u00edc\u00edch vlastnost\u00ed. Tento typ oceli vydr\u017e\u00ed drsn\u00e1 prost\u0159ed\u00ed, jako jsou ta, kter\u00e1 obsahuj\u00ed chloridy, kyseliny a vysok\u00e9 teploty. Duplexn\u00ed nerezov\u00e1 ocel p\u0159ipisuje svou odolnost proti korozi vy\u0161\u0161\u00edmu obsahu chr\u00f3mu, molybdenu a dus\u00edku ne\u017e jin\u00e9 druhy nerezov\u00e9 oceli. P\u0159\u00eddavek dus\u00edku zlep\u0161uje odolnost proti d\u016flkov\u00e9 a \u0161t\u011brbinov\u00e9 korozi, zabra\u0148uje tvorb\u011b trhlin a chr\u00e1n\u00ed kovovou strukturu.<\/p>\n<h3>Obsah chr\u00f3mu a dus\u00edku v duplexn\u00ed nerezov\u00e9 oceli<\/h3>\n<div class=\"internal-linking-related-contents-pro\"><a href=\"https:\/\/china-maching.com\/cs\/polomery-zaobleni-vse-co-potrebujete-vedet\/\" class=\"template-9\"><img width=\"200\" height=\"200\" src=\"https:\/\/china-maching.com\/wp-content\/uploads\/2023\/05\/2-7.png\" class=\"alignleft wp-post-image\" alt=\"Polom\u011bry zaoblen\u00ed: V\u0161e, co pot\u0159ebujete v\u011bd\u011bt\" srcset=\"https:\/\/china-maching.com\/wp-content\/uploads\/2023\/05\/2-7.png 512w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/05\/2-7-300x300.png 300w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/05\/2-7-150x150.png 150w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/05\/2-7-100x100.png 100w\" sizes=\"(max-width: 200px) 100vw, 200px\"><div class=\"postTitle\"><span><strong>Pokra\u010dovat ve \u010dten\u00ed<\/strong>Polom\u011bry zaoblen\u00ed: V\u0161e, co pot\u0159ebujete v\u011bd\u011bt<\/span><\/div><\/a><\/div><p>Chrom a dus\u00edk hraj\u00ed z\u00e1sadn\u00ed roli v pevnosti a odolnosti duplexn\u00ed nerezov\u00e9 oceli. Chrom zvy\u0161uje jeho odolnost proti korozi, zat\u00edmco dus\u00edk zvy\u0161uje jeho pevnost. Duplexn\u00ed nerezov\u00e1 ocel obsahuje minim\u00e1ln\u011b 21% chrom a 2,5% molybden, co\u017e j\u00ed dod\u00e1v\u00e1 vysokou odolnost proti korozi. Jeho obsah dus\u00edku p\u0159isp\u00edv\u00e1 k pevnosti materi\u00e1lu, d\u00edky \u010demu\u017e je p\u0159i nam\u00e1h\u00e1n\u00ed odoln\u011bj\u0161\u00ed ne\u017e jin\u00e9 typy nerezov\u00e9 oceli. D\u00edky sv\u00e9 vysok\u00e9 pevnosti v tahu m\u016f\u017ee duplexn\u00ed nerezov\u00e1 ocel odolat velk\u00e9mu tlaku, tak\u017ee je ide\u00e1ln\u00ed pro aplikace na mo\u0159i i na pevnin\u011b.<\/p>\n<h3>Odolnost duplexn\u00ed nerezov\u00e9 oceli proti korozi proti prask\u00e1n\u00ed<\/h3>\n<p>Duplexn\u00ed nerezov\u00e1 ocel je d\u00edky sv\u00e9 jedine\u010dn\u00e9 duplexn\u00ed struktu\u0159e a vysok\u00e9mu obsahu slitin vysoce odoln\u00e1 proti prask\u00e1n\u00ed koroz\u00ed pod nap\u011bt\u00edm (SCC). K SCC doch\u00e1z\u00ed, kdy\u017e kombinace tahov\u00e9ho nap\u011bt\u00ed a korozn\u00edho prost\u0159ed\u00ed zp\u016fsob\u00ed selh\u00e1n\u00ed materi\u00e1lu. Duplexn\u00ed nerezov\u00e1 ocel m\u00e1 v\u0161ak vynikaj\u00edc\u00ed odolnost v\u016f\u010di tomuto typu koroze d\u00edky vysok\u00e9mu obsahu chr\u00f3mu, molybdenu a dus\u00edku. Jeho schopnost odol\u00e1vat SCC ho \u010din\u00ed ide\u00e1ln\u00edm pro kritick\u00e9 aplikace v ropn\u00e9m a plyn\u00e1rensk\u00e9m pr\u016fmyslu, chemick\u00fdch zpracovatelsk\u00fdch z\u00e1vodech a n\u00e1mo\u0159n\u00edch struktur\u00e1ch.<\/p>\n<h3>Odolnost duplexn\u00ed nerezov\u00e9 oceli proti d\u016flkov\u00e9 a \u0161t\u011brbinov\u00e9 korozi<\/h3>\n<p>Duplexn\u00ed nerezov\u00e1 ocel nab\u00edz\u00ed vynikaj\u00edc\u00ed odolnost proti d\u016flkov\u00e9 a \u0161t\u011brbinov\u00e9 korozi d\u00edky vysok\u00e9mu obsahu chr\u00f3mu, molybdenu a dus\u00edku. M\u016f\u017ee odpuzovat tvorbu \u0161t\u011brbin nebo d\u016flk\u016f, kter\u00e9 mohou p\u0159i vystaven\u00ed drsn\u00e9mu prost\u0159ed\u00ed zp\u016fsobit zna\u010dn\u00e9 po\u0161kozen\u00ed konstrukc\u00ed. Jeho odolnost v\u016f\u010di d\u016flkov\u00e9 a \u0161t\u011brbinov\u00e9 korozi z n\u011bj \u010din\u00ed obl\u00edbenou volbu v chemick\u00e9m zpracov\u00e1n\u00ed, pap\u00edrn\u00e1ch a aplikac\u00edch v\u00fdroby celul\u00f3zy a pap\u00edru.<\/p>\n<h3>Vysok\u00e1 pevnost a mez kluzu duplexn\u00ed nerezov\u00e9 oceli<\/h3>\n<p>Duplexn\u00ed nerezov\u00e1 ocel m\u00e1 ve srovn\u00e1n\u00ed s jin\u00fdmi typy nerezov\u00e9 oceli vysokou pevnost a mez kluzu. Jeho jedine\u010dn\u00e1 mikrostruktura vyva\u017euje s\u00edlu a hou\u017eevnatost, d\u00edky \u010demu\u017e je vysoce odoln\u00e1 pod tlakem. Jeho vysok\u00e1 mez kluzu se hod\u00ed do vysoce nam\u00e1han\u00fdch prost\u0159ed\u00ed, jako je chemick\u00fd a petrochemick\u00fd pr\u016fmysl. Jeho hou\u017eevnatost mu umo\u017e\u0148uje odolat r\u00e1zov\u00e9mu zat\u00ed\u017een\u00ed a tepeln\u00e9mu cyklov\u00e1n\u00ed, tak\u017ee je ide\u00e1ln\u00ed pro offshore aplikace, kde m\u016f\u017ee konstrukce zaznamenat extr\u00e9mn\u00ed a n\u00e1hl\u00e9 zm\u011bny tlaku.<\/p>\n<p>Z\u00e1v\u011brem lze \u0159\u00edci, \u017ee duplexn\u00ed nerezov\u00e1 ocel je vynikaj\u00edc\u00ed volbou pro aplikace vy\u017eaduj\u00edc\u00ed vysokou pevnost, odolnost proti korozi a trvanlivost. Jedine\u010dn\u00e1 kombinace austenitick\u00fdch a feritick\u00fdch mikrostruktur a vysok\u00fd obsah chr\u00f3mu, molybdenu a dus\u00edku mu d\u00e1v\u00e1 vynikaj\u00edc\u00ed vlastnosti vhodn\u00e9 pro r\u016fzn\u00e9 n\u00e1ro\u010dn\u00e9 aplikace v n\u011bkolika pr\u016fmyslov\u00fdch odv\u011btv\u00edch.<\/p>\n<h2>Jak\u00e9 jsou b\u011b\u017en\u00e9 aplikace duplexn\u00ed nerezov\u00e9 oceli?<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3991\" src=\"https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/006-1.png\" alt=\"Jak\u00e9 jsou b\u011b\u017en\u00e9 aplikace duplexn\u00ed nerezov\u00e9 oceli?\" width=\"512\" height=\"512\" srcset=\"https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/006-1.png 512w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/006-1-300x300.png 300w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/006-1-150x150.png 150w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/006-1-100x100.png 100w\" sizes=\"(max-width: 512px) 100vw, 512px\"><\/p>\n<p>Duplex Stainless Steel je druh oceli, kter\u00fd se skl\u00e1d\u00e1 z austenitick\u00e9 i feritick\u00e9 oceli ve zhruba stejn\u00fdch pom\u011brech. Tato kombinace tvo\u0159\u00ed jedine\u010dnou mikrostrukturu s v\u00fdjime\u010dnou pevnost\u00ed a odolnost\u00ed proti korozi, d\u00edky \u010demu\u017e je zvl\u00e1\u0161t\u011b vhodn\u00e1 pro drsn\u00e1 prost\u0159ed\u00ed. Duplex Stainless Steel obsahuje vysok\u00e9 hladiny chr\u00f3mu, molybdenu a dus\u00edku, co\u017e d\u00e1le p\u0159isp\u00edv\u00e1 k jej\u00ed pevnosti a odolnosti proti korozi.<\/p>\n<h3>Aplikace duplexn\u00ed nerezov\u00e9 oceli v ropn\u00e9m a plyn\u00e1rensk\u00e9m pr\u016fmyslu<\/h3>\n<p>Duplexn\u00ed nerezov\u00e1 ocel je \u0161iroce pou\u017e\u00edv\u00e1na v ropn\u00e9m a plyn\u00e1rensk\u00e9m pr\u016fmyslu d\u00edky sv\u00e9 schopnosti odol\u00e1vat drsn\u00e9mu prost\u0159ed\u00ed, vysok\u00e9mu tlaku a korozivn\u00edm l\u00e1tk\u00e1m. B\u011b\u017en\u011b se pou\u017e\u00edv\u00e1 pro za\u0159\u00edzen\u00ed, jako jsou podmo\u0159sk\u00e1 potrub\u00ed, stoupa\u010dky, ventily, pob\u0159e\u017en\u00ed plo\u0161iny a zpracovatelsk\u00e1 za\u0159\u00edzen\u00ed. Vynikaj\u00edc\u00ed pevnost a odolnost proti \u00fanavov\u00e9mu prask\u00e1n\u00ed z duplexn\u00ed nerezov\u00e9 oceli je tak\u00e9 ide\u00e1ln\u00ed pro vrt\u00e1n\u00ed.<\/p>\n<h3>Aplikace chemick\u00e9ho zpracov\u00e1n\u00ed duplexn\u00ed nerezov\u00e9 oceli<\/h3>\n<p>Duplexn\u00ed nerezov\u00e1 ocel je \u0161iroce pou\u017e\u00edv\u00e1na v chemick\u00e9m zpracovatelsk\u00e9m pr\u016fmyslu d\u00edky sv\u00e9 vysok\u00e9 odolnosti v\u016f\u010di korozi zp\u016fsoben\u00e9 chemik\u00e1liemi a vysok\u00fdm teplot\u00e1m. B\u011b\u017en\u011b se pou\u017e\u00edv\u00e1 v reaktorech, v\u00fdm\u011bn\u00edc\u00edch tepla a skladovac\u00edch n\u00e1dr\u017e\u00edch. Vysok\u00e1 odolnost duplexn\u00ed nerezov\u00e9 oceli v\u016f\u010di d\u016flkov\u00e9 korozi a chloridov\u00e9mu korozn\u00edmu prask\u00e1n\u00ed ji \u010din\u00ed zvl\u00e1\u0161t\u011b vhodnou pro pou\u017eit\u00ed v prost\u0159ed\u00edch obsahuj\u00edc\u00edch chl\u00f3r a fosf\u00e1ty.<\/p>\n<h3>Aplikace duplexn\u00ed nerezov\u00e9 oceli v potravin\u00e1\u0159sk\u00e9m pr\u016fmyslu<\/h3>\n<p>Duplex Stainless Steel se st\u00e1le v\u00edce pou\u017e\u00edv\u00e1 v potravin\u00e1\u0159sk\u00e9m pr\u016fmyslu d\u00edky sv\u00e9 vysok\u00e9 odolnosti proti korozi a vynikaj\u00edc\u00edm hygienick\u00fdm vlastnostem. B\u011b\u017en\u011b se pou\u017e\u00edv\u00e1 pro za\u0159\u00edzen\u00ed, jako jsou n\u00e1dr\u017ee, potrub\u00ed a filtry, kter\u00e9 vy\u017eaduj\u00ed \u010dast\u00e9 \u010di\u0161t\u011bn\u00ed a sterilizaci. D\u00edky schopnosti duplexn\u00ed nerezov\u00e9 oceli odol\u00e1vat opakovan\u00e9mu vystaven\u00ed vysok\u00fdm teplot\u00e1m a agresivn\u00edm \u010distic\u00edm prost\u0159edk\u016fm je ide\u00e1ln\u00ed pro potravin\u00e1\u0159sk\u00e9 aplikace.<\/p>\n<h3>Aplikace duplexn\u00ed nerezov\u00e9 oceli v pr\u016fmyslu \u00fapravy vody<\/h3>\n<p>Duplex Stainless Steel je \u0161iroce pou\u017e\u00edv\u00e1n v pr\u016fmyslu \u00fapravy vody kv\u016fli sv\u00e9 vysok\u00e9 odolnosti v\u016f\u010di korozi a erozi. B\u011b\u017en\u011b se pou\u017e\u00edv\u00e1 pro za\u0159\u00edzen\u00ed, jako jsou \u010derpadla, filtry a n\u00e1dr\u017ee, a v syst\u00e9mech odsolov\u00e1n\u00ed a \u010di\u0161t\u011bn\u00ed odpadn\u00edch vod. Schopnost duplexn\u00ed nerezov\u00e9 oceli odolat vystaven\u00ed mo\u0159sk\u00e9 vod\u011b a dal\u0161\u00edm agresivn\u00edm prost\u0159ed\u00edm ji \u010din\u00ed zvl\u00e1\u0161t\u011b vhodnou pro pou\u017eit\u00ed v pr\u016fmyslu \u00fapravy vody.<\/p>\n<h3>Aplikace duplexn\u00ed nerezov\u00e9 oceli ve stavebnictv\u00ed<\/h3>\n<p>Duplexn\u00ed nerezov\u00e1 ocel se st\u00e1le v\u00edce pou\u017e\u00edv\u00e1 ve stavebnictv\u00ed d\u00edky sv\u00e9 vynikaj\u00edc\u00ed pevnosti a odolnosti proti korozi. B\u011b\u017en\u011b se pou\u017e\u00edv\u00e1 pro mosty, konstruk\u010dn\u00ed sou\u010d\u00e1sti a v\u00fdztu\u017en\u00e9 ty\u010de. Duplex Stainless Steel m\u00e1 vysok\u00fd pom\u011br pevnosti k hmotnosti, vynikaj\u00edc\u00ed odolnost proti d\u016flkov\u00e9 korozi a n\u00edzk\u00e1 tepeln\u00e1 rozta\u017enost z n\u00ed \u010din\u00ed ide\u00e1ln\u00ed materi\u00e1l pro pou\u017eit\u00ed ve stavebnictv\u00ed.<\/p>\n<p>Z\u00e1v\u011brem lze \u0159\u00edci, \u017ee duplexn\u00ed nerezov\u00e1 ocel je jedine\u010dn\u00fdm typem oceli zahrnuj\u00edc\u00ed austenitick\u00e9 i feritick\u00e9 struktury. Je \u0161iroce pou\u017e\u00edv\u00e1n v ropn\u00e9m a plyn\u00e1rensk\u00e9m pr\u016fmyslu, chemick\u00e9m zpracov\u00e1n\u00ed, potravin\u00e1\u0159sk\u00e9m pr\u016fmyslu, \u00faprav\u011b vody a stavebn\u00edm pr\u016fmyslu d\u00edky sv\u00e9 v\u00fdjime\u010dn\u00e9 pevnosti a odolnosti proti korozi. Ka\u017ed\u00e9 pr\u016fmyslov\u00e9 odv\u011btv\u00ed m\u00e1 specifick\u00e9 aplikace pro duplexn\u00ed nerezovou ocel, kter\u00e9 umo\u017e\u0148uj\u00ed jej\u00ed vynikaj\u00edc\u00ed kvality a technick\u00e9 specifikace.<\/p>\n<h2>Jak vybrat spr\u00e1vnou duplexn\u00ed nerezovou ocel?<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3992\" src=\"https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/6-12.png\" alt=\"Jak vybrat spr\u00e1vnou duplexn\u00ed nerezovou ocel?\" width=\"512\" height=\"512\" srcset=\"https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/6-12.png 512w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/6-12-300x300.png 300w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/6-12-150x150.png 150w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/6-12-100x100.png 100w\" sizes=\"(max-width: 512px) 100vw, 512px\"><\/p>\n<p>Duplexn\u00ed nerezov\u00e1 ocel je druh nerezov\u00e9 oceli, kter\u00e1 ve sv\u00e9 krystalov\u00e9 m\u0159\u00ed\u017ece obsahuje austenitick\u00e9 i feritick\u00e9 mikrostruktury. Tato jedine\u010dn\u00e1 kombinace struktur d\u00e1v\u00e1 duplexn\u00ed nerezov\u00e9 oceli vysokou odolnost proti korozi a vynikaj\u00edc\u00ed mechanick\u00e9 vlastnosti, d\u00edky \u010demu\u017e je vhodn\u00e1 pro r\u016fzn\u00e9 aplikace, v\u010detn\u011b chemick\u00e9ho a petrochemick\u00e9ho pr\u016fmyslu, n\u00e1mo\u0159n\u00edho stroj\u00edrenstv\u00ed a t\u011b\u017eby ropy a plynu.<\/p>\n<h3>Duplexn\u00ed krit\u00e9ria v\u00fdb\u011bru t\u0159\u00edd nerezov\u00e9 oceli<\/h3>\n<p>P\u0159i v\u00fdb\u011bru vhodn\u00e9 duplexn\u00ed t\u0159\u00eddy nerezov\u00e9 oceli je nezbytn\u00e9 vz\u00edt v \u00favahu prost\u0159ed\u00ed, po\u017eadovanou pevnost, odolnost proti korozi a mo\u017enost prask\u00e1n\u00ed nebo d\u016flkov\u00e9 koroze. Mezi nejb\u011b\u017en\u011bj\u0161\u00ed duplexn\u00ed kvality pat\u0159\u00ed 2205, 2304, 2507 a Z100. 2205 je univerz\u00e1ln\u00ed t\u0159\u00edda, kter\u00e1 nab\u00edz\u00ed vynikaj\u00edc\u00ed odolnost proti korozi, vysokou pevnost a snadnou v\u00fdrobu. 2304 se \u010dasto pou\u017e\u00edv\u00e1 ve struktur\u00e1ln\u00edch aplikac\u00edch, poskytuje vynikaj\u00edc\u00ed odolnost proti korozi a vysokou pevnost. 2507 nab\u00edz\u00ed nejvy\u0161\u0161\u00ed pevnost a odolnost proti korozi duplexn\u00edch t\u0159\u00edd, zat\u00edmco Z100 poskytuje vysokou odolnost proti korozi za ni\u017e\u0161\u00ed cenu.<\/p>\n<h3>Faktory, kter\u00e9 je t\u0159eba zv\u00e1\u017eit p\u0159i v\u00fdb\u011bru spr\u00e1vn\u00e9 duplexn\u00ed nerezov\u00e9 oceli<\/h3>\n<p>Prost\u0159ed\u00ed, ve kter\u00e9m bude duplexn\u00ed nerezov\u00e1 ocel pou\u017e\u00edv\u00e1na, je rozhoduj\u00edc\u00edm faktorem p\u0159i v\u00fdb\u011bru vhodn\u00e9 jakosti. Korozivn\u00ed prost\u0159ed\u00ed, vysok\u00e9 teploty a vystaven\u00ed vysoce nam\u00e1han\u00e9mu prost\u0159ed\u00ed jsou v\u0161echny faktory, kter\u00e9 je t\u0159eba vz\u00edt v \u00favahu. Zvolen\u00e1 kvalita by tak\u00e9 m\u011bla spl\u0148ovat specifick\u00e9 po\u017eadavky na pevnost aplikace. Krom\u011b toho je nezbytn\u00e9 vz\u00edt v \u00favahu mo\u017enost prask\u00e1n\u00ed a d\u016flkov\u00e9 koroze, kter\u00e9 mohou v\u00fdznamn\u011b ovlivnit \u017eivotnost konstrukc\u00ed a za\u0159\u00edzen\u00ed.<\/p>\n<h3>Aplikace duplexn\u00edch t\u0159\u00edd nerezov\u00e9 oceli<\/h3>\n<p>Duplexn\u00ed nerezov\u00e1 ocel se pou\u017e\u00edv\u00e1 v r\u016fzn\u00fdch pr\u016fmyslov\u00fdch aplikac\u00edch, v\u010detn\u011b rafinace ropy, chemick\u00e9ho zpracov\u00e1n\u00ed a lodn\u00edho in\u017een\u00fdrstv\u00ed. D\u00edky vynikaj\u00edc\u00ed odolnosti proti korozi a vysok\u00e9 pevnosti je vhodn\u00fd pro potrubn\u00ed syst\u00e9my, skladovac\u00ed n\u00e1dr\u017ee a tlakov\u00e9 n\u00e1doby. Duplexn\u00ed nerezov\u00e1 ocel je nav\u00edc ide\u00e1ln\u00ed pro pr\u016fmyslov\u00e9 aplikace, kde jsou prim\u00e1rn\u00edmi z\u00e1jmy odolnost a bezpe\u010dnost.<\/p>\n<h3>Leguj\u00edc\u00ed prvky pou\u017e\u00edvan\u00e9 v duplexn\u00edch t\u0159\u00edd\u00e1ch nerezov\u00e9 oceli<\/h3>\n<p>Jednou z jedine\u010dn\u00fdch vlastnost\u00ed duplexn\u00ed nerezov\u00e9 oceli jsou specifick\u00e9 legovac\u00ed prvky p\u0159idan\u00e9 pro zv\u00fd\u0161en\u00ed jej\u00ed pevnosti a odolnosti proti korozi. Chrom a molybden se p\u0159id\u00e1vaj\u00ed pro zlep\u0161en\u00ed odolnosti proti korozi, zat\u00edmco dus\u00edk a nikl se p\u0159id\u00e1vaj\u00ed pro zv\u00fd\u0161en\u00ed pevnosti. Dal\u0161\u00ed prvky, jako je wolfram a m\u011b\u010f, mohou b\u00fdt tak\u00e9 p\u0159id\u00e1ny pro dal\u0161\u00ed vylep\u0161en\u00ed specifick\u00fdch vlastnost\u00ed.<\/p>\n<h3>Vlastnosti a vlastnosti duplexn\u00edch nerezov\u00fdch ocel\u00ed<\/h3>\n<p>Vlastnosti duplexn\u00edch t\u0159\u00edd nerezov\u00e9 oceli se li\u0161\u00ed v z\u00e1vislosti na konkr\u00e9tn\u00edch p\u0159idan\u00fdch legovac\u00edch prvc\u00edch, ale spole\u010dn\u00e9 vlastnosti zahrnuj\u00ed vysokou pevnost, vynikaj\u00edc\u00ed odolnost proti korozi a dobrou hou\u017eevnatost. Mikrostruktura je tak\u00e9 vysoce odoln\u00e1 proti prask\u00e1n\u00ed koroz\u00ed pod nap\u011bt\u00edm, d\u00edky \u010demu\u017e je vhodn\u00e1 do vysoce nam\u00e1han\u00fdch prost\u0159ed\u00ed. Sva\u0159itelnost a v\u00fdroba jsou tak\u00e9 d\u016fle\u017eit\u00e9 faktory, p\u0159i\u010dem\u017e v\u011bt\u0161ina duplexn\u00edch t\u0159\u00edd vy\u017eaduje pe\u010dlivou p\u0159\u00edpravu a kontrolu b\u011bhem sva\u0159ov\u00e1n\u00ed, aby se p\u0159ede\u0161lo probl\u00e9m\u016fm, jako je prask\u00e1n\u00ed za tepla a deformace.<\/p>\n<p><strong>Doporu\u010duji p\u0159e\u010d\u00edst: <\/strong><a href=\"https:\/\/china-maching.com\/cs\/cnc-obrabeni\/cnc-obrabeni-nerezove-oceli\/\" target=\"_blank\">Objevte v\u00fdhody CNC obr\u00e1b\u011bn\u00ed nerezov\u00e9 oceli<\/a><\/p>\n<h2>\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3993\" src=\"https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/7-4.png\" alt=\"\u010casto kladen\u00e9 ot\u00e1zky\" width=\"512\" height=\"512\" srcset=\"https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/7-4.png 512w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/7-4-300x300.png 300w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/7-4-150x150.png 150w, https:\/\/china-maching.com\/wp-content\/uploads\/2023\/06\/7-4-100x100.png 100w\" sizes=\"(max-width: 512px) 100vw, 512px\"><\/p>\n<h3>Ot\u00e1zka: Co je UNS S31803?<\/h3>\n<p>Odpov\u011b\u010f: UNS S31803 je duplexn\u00ed ocelov\u00fd typ nerezov\u00e9 oceli s feriticko-austenitickou mikrostrukturou sest\u00e1vaj\u00edc\u00ed z austenitov\u00e9 a feritov\u00e9 f\u00e1ze ve zhruba stejn\u00fdch pom\u011brech.<\/p>\n<h3>Ot\u00e1zka: Jak\u00fd je rozd\u00edl mezi UNS S31803 a S32205?<\/h3>\n<p>Odpov\u011b\u010f: S31803 a S32205 jsou duplexn\u00ed t\u0159\u00eddy nerezov\u00e9 oceli, ale S32205 m\u00e1 vy\u0161\u0161\u00ed odolnost proti korozi d\u00edky vy\u0161\u0161\u00edmu obsahu chr\u00f3mu, molybdenu a dus\u00edku. S32205 je pova\u017eov\u00e1na za super duplexn\u00ed ocel, zat\u00edmco S31803 je standardn\u00ed duplexn\u00ed ocel.<\/p>\n<h3>Ot\u00e1zka: Jak\u00e9 jsou mechanick\u00e9 vlastnosti UNS S31803?<\/h3>\n<p>Odpov\u011b\u010f: UNS S31803 m\u00e1 vysokou mez kluzu a pevnost v tahu, dobrou pru\u017enost a vynikaj\u00edc\u00ed r\u00e1zovou hou\u017eevnatost p\u0159i pokojov\u00fdch i n\u00edzk\u00fdch teplot\u00e1ch.<\/p>\n<h3>Ot\u00e1zka: Jak\u00e9 je chemick\u00e9 slo\u017een\u00ed duplexn\u00ed nerezov\u00e9 oceli UNS S31803?<\/h3>\n<p>Odpov\u011b\u010f: Chemick\u00e9 slo\u017een\u00ed UNS S31803 obvykle obsahuje p\u0159ibli\u017en\u011b 22% chrom, 5-6% nikl, 3% molybden a 0,15% \u2013 0,30% dus\u00edk spolu s mal\u00fdm mno\u017estv\u00edm dal\u0161\u00edch prvk\u016f.<\/p>\n<h3>Ot\u00e1zka: Jak\u00e9 jsou fyzik\u00e1ln\u00ed vlastnosti UNS S31803?<\/h3>\n<p>A: UNS S31803 m\u00e1 hustotu 7,8 g\/cm3, bod t\u00e1n\u00ed 1350-1450\u00b0C (2462-2642\u00b0F) a specifickou tepelnou kapacitu 0,5 J\/g\u00b7K p\u0159i 20\u00b0C (68\u00b0F ).<\/p>\n<h3>Ot\u00e1zka: Jak\u00e1 je odolnost proti korozi UNS S31803?<\/h3>\n<p>Odpov\u011b\u010f: UNS S31803 m\u00e1 vynikaj\u00edc\u00ed odolnost proti chloridov\u00e9 d\u016flkov\u00e9 a \u0161t\u011brbinov\u00e9 korozi, d\u00edky \u010demu\u017e je vhodn\u00fdm materi\u00e1lem pro pou\u017eit\u00ed v korozivn\u00edm prost\u0159ed\u00ed.<\/p>\n<h3>Ot\u00e1zka: Jak se sva\u0159uje ocel UNS S31803?<\/h3>\n<p>Odpov\u011b\u010f: UNS S31803 lze sva\u0159ovat pomoc\u00ed v\u011bt\u0161iny standardn\u00edch sva\u0159ovac\u00edch technik, v\u010detn\u011b sva\u0159ov\u00e1n\u00ed plynov\u00fdm wolframov\u00fdm obloukem (GTAW), sva\u0159ov\u00e1n\u00ed plynov\u00fdm kovov\u00fdm obloukem (GMAW) a obloukov\u00e9ho sva\u0159ov\u00e1n\u00ed v ochrann\u00e9 atmosf\u00e9\u0159e (SMAW).<\/p>\n<h3>Ot\u00e1zka: Jak je UNS S31803 \u017e\u00edh\u00e1n?<\/h3>\n<p>Odpov\u011b\u010f: UNS S31803 je typicky \u017e\u00edh\u00e1n mezi 1025-1075\u00b0C (1877-1967\u00b0F), n\u00e1sleduje rychl\u00e9 ochlazen\u00ed ve vod\u011b nebo na vzduchu.<\/p>\n<h3>Ot\u00e1zka: Vy\u017eaduje UNS S31803 tepeln\u00e9 zpracov\u00e1n\u00ed?<\/h3>\n<p>Odpov\u011b\u010f: Pro zlep\u0161en\u00ed mechanick\u00fdch vlastnost\u00ed UNS S31803 m\u016f\u017ee b\u00fdt u n\u011bkter\u00fdch aplikac\u00ed nutn\u00e9 tepeln\u00e9 zpracov\u00e1n\u00ed. V mnoha p\u0159\u00edpadech v\u0161ak posta\u010duje stav jako sva\u0159en\u00fd nebo jako vyroben\u00fd.<\/p>\n<h3>Ot\u00e1zka: Co je duplex 2205?<\/h3>\n<p>Odpov\u011b\u010f: Duplex 2205 je druh duplexn\u00ed nerezov\u00e9 oceli podobn\u00e9 UNS S31803, ale m\u00e1 m\u00edrn\u011b vy\u0161\u0161\u00ed obsah chr\u00f3mu, molybdenu a dus\u00edku pro zlep\u0161enou odolnost proti korozi a pevnost.<\/p>","protected":false},"excerpt":{"rendered":"<p>What is UNS S31803? UNS S31803 duplex stainless steel is a type of steel that is comprised of two phases: austenitic and ferritic. It was developed in the 1930s and 1940s in response to the need for steel that could withstand the harsh conditions of the petrochemical industry. Its unique composition gives it superior corrosion [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3994,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","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":"default","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-3984","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cnc-machining-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.8 (Yoast SEO v27.4) - 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