{"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\/hr\/uns-s31803-sve-sto-trebate-znati-o-duplex-nehrdajucem-celiku\/","title":{"rendered":"UNS S31803: Sve \u0161to trebate znati o dupleks nehr\u0111aju\u0107em \u010deliku"},"content":{"rendered":"<h2>\u0160to 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=\"\u0160to 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>Duplex nehr\u0111aju\u0107i \u010delik UNS S31803 vrsta je \u010delika koji se sastoji od dvije faze: austenitne i feritne. Razvijen je 1930-ih i 1940-ih kao odgovor na potrebu za \u010delikom koji bi mogao izdr\u017eati te\u0161ke uvjete petrokemijske industrije. Njegov jedinstveni sastav daje mu vrhunsku otpornost na koroziju, \u010dvrsto\u0107u i elasti\u010dnost.<\/p>\n<h3>Kemijski sastav UNS S31803<\/h3>\n<p>Kemijski sastav UNS S31803 duplex nehr\u0111aju\u0107eg \u010delika vrlo je slo\u017een, sastoji se od razli\u010ditih elemenata koji rade zajedno kako bi proizveli karakteristi\u010dna svojstva. Glavne komponente uklju\u010duju krom (21-23%), nikal (4,5-6,5%), molibden (2,5-3,5%), du\u0161ik (0,08-0,2%) i \u017eeljezo (ostatak). Ovi elementi rade zajedno kako bi stvorili \u010delik vrlo otporan na koroziju, posebno u te\u0161kim okru\u017eenjima kao \u0161to su morska voda, kiseli spojevi i kloridi.<\/p>\n<h3>Mehani\u010dka svojstva UNS S31803<\/h3>\n<p>UNS S31803 <a class=\"wpil_keyword_link\" href=\"https:\/\/china-maching.com\/hr\/zasto-je-dvostruki-nehrdajuci-celik-izbor-materijala-za-industrijske-primjene\/\" target=\"_blank\" rel=\"noopener\" title=\"duplex nehr\u0111aju\u0107i \u010delik\" data-wpil-keyword-link=\"linked\">duplex nehr\u0111aju\u0107i \u010delik<\/a> je poznat po svojoj visokoj mehani\u010dkoj \u010dvrsto\u0107i, popu\u0161tanju od 450 MPa i vla\u010dnoj \u010dvrsto\u0107i od 620 MPa. Njegova tvrdo\u0107a je tako\u0111er vrlo visoka, s maksimalnom vrijedno\u0161\u0107u od 290 HV. Osim toga, vrlo je savitljiv, s istezanjem od 25% ili vi\u0161e. Na mehani\u010dka svojstva UNS S31803 utje\u010de temperatura, uz zna\u010dajno smanjenje \u010dvrsto\u0107e i fleksibilnosti na visokim temperaturama.<\/p>\n<h3>Fizi\u010dka svojstva UNS S31803<\/h3>\n<p>Osim svojih mehani\u010dkih svojstava, duplex nehr\u0111aju\u0107i \u010delik UNS S31803 ima jedinstvena fizi\u010dka svojstva, \u0161to ga \u010dini materijalom visokih performansi. Gusto\u0107a mu je 7,8 g\/cm3, \u0161to ga \u010dini prili\u010dno te\u0161kim. \u010celik ima izvrsnu toplinsku vodljivost, s koeficijentom toplinskog rastezanja od 13,5 \u03bcm\/m\u00b0C i specifi\u010dnim toplinskim kapacitetom od 0,46 J\/g\u00b0C. Njegova elektri\u010dna vodljivost je tako\u0111er dobra, s otporom od pribli\u017eno 1,74 \u03bc\u03a9\u00b7m.<\/p>\n<h3>Primjene UNS S31803 Duplex nehr\u0111aju\u0107eg \u010delika<\/h3>\n<p>Duplex nehr\u0111aju\u0107i \u010delik UNS S31803 koristi se u \u0161irokom rasponu primjena, posebice u proizvodnoj opremi i strukturama koje zahtijevaju visoku <a class=\"wpil_keyword_link\" href=\"https:\/\/china-maching.com\/hr\/krajnji-vodic-za-otpornost-na-koroziju\/\" target=\"_blank\" rel=\"noopener\" title=\"otpornost na koroziju\" data-wpil-keyword-link=\"linked\">otpornost na koroziju<\/a>. Njegova svojstva \u010dine ga idealnim za upotrebu u petrokemijskoj, kemijskoj, naftnoj i plinskoj industriji te u pomorstvu, industriji celuloze, papira i preradi hrane. Specifi\u010dne primjene uklju\u010duju spremnike, cijevi, izmjenjiva\u010de topline i ventile.<\/p>\n<h3>Prednosti kori\u0161tenja UNS S31803 u industrijskim primjenama<\/h3>\n<p>Brojne su prednosti kori\u0161tenja duplex nehr\u0111aju\u0107eg \u010delika UNS S31803 u industrijskim primjenama. Nudi vrhunsku otpornost na koroziju, osobito u te\u0161kim uvjetima. Njegova visoka mehani\u010dka \u010dvrsto\u0107a i fleksibilnost \u010dine ga idealnim za primjene pod velikim stresom. Osim toga, to je isplativ materijal zbog dugog vijeka trajanja i otpornosti na habanje. Njegova svestranost s razli\u010ditim vrstama kemikalija, temperaturama i pritiscima \u010dini ga idealnim materijalom za in\u017eenjere i dizajnere u industrijskom i komercijalnom sektoru.<\/p>\n<h2>Koje su karakteristike duplex nehr\u0111aju\u0107eg \u010delika?<\/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=\"Koje su karakteristike duplex nehr\u0111aju\u0107eg \u010delika?\" 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>Ovu vrstu metala karakterizira jedinstveni sastav kada se definira duplex nehr\u0111aju\u0107i \u010delik. Duplex nehr\u0111aju\u0107i \u010delik sastoji se od kombinacije austenitnog i <a class=\"wpil_keyword_link\" href=\"https:\/\/china-maching.com\/hr\/feritni-nehrdajuci-celik-kljucna-svojstva-prednosti-i-primjene\/\" target=\"_blank\" rel=\"noopener\" title=\"feritni nehr\u0111aju\u0107i \u010delik\" data-wpil-keyword-link=\"linked\">feritni nehr\u0111aju\u0107i \u010delik<\/a>, daju\u0107i mu kvalitete iz obje vrste. To dupleks nehr\u0111aju\u0107em \u010deliku daje neusporedivu \u010dvrsto\u0107u, otpornost na koroziju i trajnost. Za razliku od drugih vrsta nehr\u0111aju\u0107eg \u010delika, duplex nehr\u0111aju\u0107i \u010delik ne pravi kompromise ni u jednom podru\u010dju, \u0161to ga \u010dini savr\u0161enim izborom za razne primjene.<\/p>\n<h3>Otpornost na koroziju Duplex nehr\u0111aju\u0107eg \u010delika<\/h3>\n<p>Jedna od najcjenjenijih karakteristika duplex nehr\u0111aju\u0107eg \u010delika je njegova izuzetna otpornost na koroziju. Ovaj je metal otporan na razli\u010dite vrste one\u010di\u0161\u0107enja, poput korozije na naprezanje, pucanja i rupi\u010daste korozije. Duplex nehr\u0111aju\u0107i \u010delik nadma\u0161uje tradicionalni nehr\u0111aju\u0107i \u010delik u morskoj vodi i kiselim kemijskim okru\u017eenjima gdje bi standardni nehr\u0111aju\u0107i \u010delik podlegao korupciji. S tako izvanrednim svojstvima otpornosti na koroziju, duplex nehr\u0111aju\u0107i \u010delik kori\u0161ten je u raznim primjenama u industriji nafte i plina, kemijskim postrojenjima i pomorskim aplikacijama.<\/p>\n<h3>Zavarivanje Duplex nehr\u0111aju\u0107eg \u010delika<\/h3>\n<p>Postupak zavarivanja duplex nehr\u0111aju\u0107eg \u010delika ima neke dodatne slo\u017eenosti u usporedbi s drugim vrstama nehr\u0111aju\u0107eg \u010delika. Proces mo\u017ee zahtijevati odre\u0111enu vrstu dodatnog metala, a potrebne su pa\u017eljive operacije prije zavarivanja kako bi se sprije\u010dilo izobli\u010denje i pucanje. Mora se obratiti pa\u017enja na temperaturu zavarivanja kako bi se odr\u017eala dvostruka struktura. S pravilnim postupkom zavarivanja, me\u0111utim, izvanredna mehani\u010dka svojstva duplex nehr\u0111aju\u0107eg \u010delika mogu se odr\u017eati, \u010dine\u0107i metal prikladnim za upotrebu u visokotla\u010dnim aplikacijama i temperaturama ispod nule.<\/p>\n<h3>\u017darenje Duplex nehr\u0111aju\u0107eg \u010delika<\/h3>\n<p>Proces \u017earenja pobolj\u0161ava fleksibilnost i \u017eilavost duplex nehr\u0111aju\u0107eg \u010delika. Proces \u017earenja obi\u010dno se izvodi na povi\u0161enim temperaturama, oko 1050\u00b0 Celzija, tijekom odre\u0111enog vremena. Ovaj proces poma\u017ee obnoviti mikrostrukturu metala i eliminirati sav austenit koji se mo\u017eda pretvorio u martenzit zbog legiraju\u0107ih elemenata koji mijenjaju strukturu metala. Dvostruki nehr\u0111aju\u0107i \u010delik \u017earenjem vra\u0107a metal u izvorno stanje i olak\u0161ava oblikovanje i obradu.<\/p>\n<h3>Toplinska obrada Duplex nehr\u0111aju\u0107eg \u010delika<\/h3>\n<div class=\"internal-linking-related-contents-pro\"><a href=\"https:\/\/china-maching.com\/hr\/opsezan-vodic-za-cad-crtanje-za-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=\"Sveobuhvatni vodi\u010d za CAD crtanje za 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>Vi\u0161e informacija<\/strong>Sveobuhvatni vodi\u010d za CAD crtanje za CNC stroj<\/span><\/div><\/a><\/div><p>Duplex nehr\u0111aju\u0107i \u010delik mo\u017ee se podvrgnuti toplinskoj obradi radi pobolj\u0161anja mehani\u010dkih svojstava. Ovaj proces omogu\u0107uje bolju \u010dvrsto\u0107u, \u017eilavost i fleksibilnost. Proces uklju\u010duje zagrijavanje metala na odre\u0111enu temperaturu i zatim dr\u017eanje unaprijed odre\u0111eno vrijeme. To\u010dan postupak toplinske obrade razlikovat \u0107e se ovisno o vrsti dupleks nehr\u0111aju\u0107eg \u010delika koji se koristi. Toplinska obrada omogu\u0107uje upotrebu dupleks nehr\u0111aju\u0107eg \u010delika u aplikacijama visoke \u010dvrsto\u0107e kao \u0161to su strojevi za no\u0161enje tereta, industrijski izmjenjiva\u010di topline i oprema za naftu i plin na moru.<\/p>\n<h3>Mikrostruktura Duplex nehr\u0111aju\u0107eg \u010delika<\/h3>\n<p>Mikrostruktura duplex nehr\u0111aju\u0107eg \u010delika sastoji se od austenitne i feritne faze. To stvara jedinstvenu mikrostrukturu koja doprinosi mehani\u010dkim i fizi\u010dkim svojstvima metala, uklju\u010duju\u0107i pove\u0107anu \u010dvrsto\u0107u i otpornost na koroziju. Duplex nehr\u0111aju\u0107i \u010delik ima karakteristi\u010dnu dvofaznu mikrostrukturu, \u0161to ga \u010dini jedinstvenim u usporedbi s austenitnim i feritnim nehr\u0111aju\u0107im \u010delikom. Mikrostruktura duplex nehr\u0111aju\u0107eg \u010delika tako\u0111er igra ulogu u otpornosti metala na pucanje od korozije, \u0161to ga \u010dini idealnim izborom za te\u0161ke uvjete rada.<\/p>\n<h2>Koje su klase i specifikacije dupleks nehr\u0111aju\u0107eg \u010delika?<\/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=\"Koje su klase i specifikacije dupleks nehr\u0111aju\u0107eg \u010delika?\" 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>Duplex nehr\u0111aju\u0107i \u010delik je vrsta nehr\u0111aju\u0107eg \u010delika koja u svojoj mikrostrukturi sadr\u017ei kombinaciju austenitnih i feritnih zrnaca. Ova jedinstvena struktura daje dvostruki nehr\u0111aju\u0107i \u010delik s izvrsnom \u010dvrsto\u0107om i otporno\u0161\u0107u na koroziju, \u0161to ga \u010dini idealnim za zahtjevne primjene.<\/p>\n<h3>Duplex S32205 u odnosu na S31803<\/h3>\n<p>Duplex S32205 i S31803 dva su naj\u010de\u0161\u0107e kori\u0161tena dvostruka tipa nehr\u0111aju\u0107eg \u010delika. Iako su vrlo sli\u010dni po sastavu, va\u017eno je uzeti u obzir nekoliko klju\u010dnih razlika izme\u0111u njih pri odabiru stope za odre\u0111enu primjenu. Duplex S32205 nudi ve\u0107u otpornost na koroziju i bolju \u010dvrsto\u0107u od S31803, \u0161to ga \u010dini idealnim za primjene gdje su izdr\u017eljivost i otpornost na koroziju klju\u010dni.<\/p>\n<h3>Vrste duplex nehr\u0111aju\u0107eg \u010delika<\/h3>\n<p>Uz S32205 i S31803, dostupno je nekoliko drugih vrsta duplex nehr\u0111aju\u0107eg \u010delika s jedinstvenim sastavom i svojstvima. Na primjer, Duplex 2205 je stupanj duplex nehr\u0111aju\u0107eg \u010delika koji nudi izvrsnu otpornost na pucanje uslijed korozije i \u010desto se koristi u kemijskoj industriji. U me\u0111uvremenu, Duplex 2304 je lo\u0161a klasa duplex nehr\u0111aju\u0107eg \u010delika koji je pristupa\u010dniji i prikladniji za primjene gdje je tro\u0161ak primarna briga. Prije odabira bitno je razmotriti jedinstvena svojstva i namjeravanu primjenu svake vrste dupleks nehr\u0111aju\u0107eg \u010delika.<\/p>\n<h3>ASTM specifikacije za dupleks nehr\u0111aju\u0107i \u010delik<\/h3>\n<p>Ameri\u010dko dru\u0161tvo za ispitivanje i materijale (ASTM) uspostavilo je nekoliko specifikacija za dvostruki nehr\u0111aju\u0107i \u010delik kako bi se osigurala ujedna\u010denost i kvaliteta u njegovoj proizvodnji i uporabi. Ovi standardi pokrivaju sve, od mehani\u010dkih svojstava i kemijskog sastava do toplinske obrade i metoda ispitivanja. ASTM A240 i ASTM A276 standardne su specifikacije za dvostruki nehr\u0111aju\u0107i \u010delik, koje opisuju zahtjeve za toplo valjane i hladno obra\u0111ene plo\u010de, limove i \u0161ipke.<\/p>\n<h3>Razlika izme\u0111u dupleksa i austenitnog nehr\u0111aju\u0107eg \u010delika<\/h3>\n<p>Dok duplex i <a class=\"wpil_keyword_link\" href=\"https:\/\/china-maching.com\/hr\/austenitni-nehrdajuci-celik-sve-sto-trebate-znati\/\" target=\"_blank\" rel=\"noopener\" title=\"austenitni nehr\u0111aju\u0107i \u010delik\" data-wpil-keyword-link=\"linked\">austenitni nehr\u0111aju\u0107i \u010delik<\/a> mogu izgledati sli\u010dno, imaju jasne razlike u svom kemijskom sastavu i mikrostrukturi. Austenitni nehr\u0111aju\u0107i \u010delik sastoji se prvenstveno od austenitnih zrnaca i ima izvrsnu otpornost na koroziju, ali mo\u017eda nije tako \u010dvrst kao dupleks nehr\u0111aju\u0107i \u010delik. Duplex nehr\u0111aju\u0107i \u010delik, naprotiv, sadr\u017ei i austenitna i feritna zrna, nude\u0107i vrhunsku \u010dvrsto\u0107u i otpornost na koroziju. Osim toga, austenitni nehr\u0111aju\u0107i \u010delik je nemagneti\u010dan, dok dvostruki nehr\u0111aju\u0107i \u010delik mo\u017ee pokazivati neka magnetska svojstva.<\/p>\n<h3>Feritno-austenitni stupnjevi dupleks nehr\u0111aju\u0107eg \u010delika<\/h3>\n<p>Feritno-austenitne vrste duplex nehr\u0111aju\u0107eg \u010delika, tako\u0111er poznate kao super duplex nehr\u0111aju\u0107i \u010delik, sadr\u017ee \u010dak i vi\u0161e razine kroma, molibdena i du\u0161ika nego standardni duplex nehr\u0111aju\u0107i \u010delik. Ovaj pobolj\u0161ani sastav pru\u017ea vrhunsku otpornost na koroziju i snagu, \u0161to ga \u010dini idealnim za upotrebu u ekstremnim okru\u017eenjima, kao \u0161to su naftne platforme na moru i postrojenja za kemijsku preradu. Primjeri feritno-austenitnih razreda duplex nehr\u0111aju\u0107eg \u010delika uklju\u010duju Duplex S32750 i Duplex S32760, koji pokazuju izvrsnu otpornost na rupi\u010dastu i pukotinsku koroziju.<\/p>\n<h2>Koja su klju\u010dna svojstva duplex nehr\u0111aju\u0107eg \u010delika?<\/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=\"Koja su klju\u010dna svojstva duplex nehr\u0111aju\u0107eg \u010delika?\" 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>Duplex nehr\u0111aju\u0107i \u010delik je vrsta nehr\u0111aju\u0107eg \u010delika koja sadr\u017ei kombinaciju austenitnih i feritnih mikrostruktura. Sastoji se od pribli\u017eno jednakih omjera obje strukture, \u0161to mu daje jedinstvenu ravnote\u017eu \u010dvrsto\u0107e, fleksibilnosti i otpornosti na koroziju. Zbog duplex sustava, ima pobolj\u0161ana mehani\u010dka svojstva i visoku otpornost na koroziju, \u0161to ga \u010dini idealnim za kriti\u010dne primjene u raznim industrijama. Ova vrsta \u010delika obi\u010dno se koristi u primjenama gdje su bitni visoka \u010dvrsto\u0107a, dobra zavarljivost i izvrsna otpornost na koroziju.<\/p>\n<h3>Otpornost na koroziju Duplex nehr\u0111aju\u0107eg \u010delika<\/h3>\n<p>Iznimna otpornost na koroziju duplex nehr\u0111aju\u0107eg \u010delika jedna je od njegovih zna\u010dajki. Ova vrsta \u010delika mo\u017ee izdr\u017eati o\u0161tra okru\u017eenja, poput onih koja sadr\u017ee kloride, kiseline i visoke temperature. Duplex nehr\u0111aju\u0107i \u010delik svoju otpornost na koroziju pripisuje ve\u0107em sadr\u017eaju kroma, molibdena i du\u0161ika od ostalih vrsta nehr\u0111aju\u0107eg \u010delika. Dodavanje du\u0161ika pobolj\u0161ava otpornost na rupi\u010dastu i pukotinsku koroziju, sprje\u010davaju\u0107i stvaranje pukotina i \u010duvaju\u0107i metalnu strukturu.<\/p>\n<h3>Sadr\u017eaj kroma i du\u0161ika u Duplex nehr\u0111aju\u0107em \u010deliku<\/h3>\n<div class=\"internal-linking-related-contents-pro\"><a href=\"https:\/\/china-maching.com\/hr\/file-radijus-sve-sto-trebate-znati\/\" 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=\"Radijusi zaobljenja: Sve \u0161to trebate znati\" 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>Vi\u0161e informacija<\/strong>Radijusi zaobljenja: Sve \u0161to trebate znati<\/span><\/div><\/a><\/div><p>Krom i du\u0161ik igraju klju\u010dnu ulogu u \u010dvrsto\u0107i i trajnosti duplex nehr\u0111aju\u0107eg \u010delika. Krom pove\u0107ava njegovu otpornost na koroziju, dok du\u0161ik pove\u0107ava njegovu \u010dvrsto\u0107u. Duplex nehr\u0111aju\u0107i \u010delik sadr\u017ei najmanje 21% kroma i 2.5% molibdena, \u0161to mu daje visoku otpornost na koroziju. Njegov sadr\u017eaj du\u0161ika doprinosi \u010dvrsto\u0107i materijala, \u010dine\u0107i ga otpornijim na naprezanje od ostalih vrsta nehr\u0111aju\u0107eg \u010delika. Zbog svoje visoke vla\u010dne \u010dvrsto\u0107e, dvostruki nehr\u0111aju\u0107i \u010delik mo\u017ee izdr\u017eati veliki pritisak, \u0161to ga \u010dini savr\u0161enim za primjenu na moru i kopnu.<\/p>\n<h3>Otpornost dupleks nehr\u0111aju\u0107eg \u010delika na pucanje od korozije<\/h3>\n<p>Duplex nehr\u0111aju\u0107i \u010delik vrlo je otporan na pucanje od korozije (SCC) zbog svoje jedinstvene duplex strukture i visokog sadr\u017eaja legure. SCC nastaje kada kombinacija vla\u010dnog naprezanja i korozivnog okru\u017eenja uzrokuje kvar materijala. Duplex nehr\u0111aju\u0107i \u010delik, me\u0111utim, posjeduje superiornu otpornost na ovu vrstu korozije zbog visokog sadr\u017eaja kroma, molibdena i du\u0161ika. Njegova sposobnost da izdr\u017ei SCC \u010dini ga idealnim za kriti\u010dne primjene u industriji nafte i plina, postrojenjima za kemijsku preradu i pomorskim strukturama.<\/p>\n<h3>Otpornost dupleks nehr\u0111aju\u0107eg \u010delika na rupi\u010dastu i pukotinsku koroziju<\/h3>\n<p>Duplex nehr\u0111aju\u0107i \u010delik nudi izvrsnu otpornost na rupi\u010dastu i pukotinsku koroziju zahvaljuju\u0107i visokom sadr\u017eaju kroma, molibdena i du\u0161ika. Mo\u017ee sprije\u010diti stvaranje pukotina ili jama, \u0161to mo\u017ee uzrokovati zna\u010dajna o\u0161te\u0107enja struktura kada su izlo\u017eene te\u0161kim uvjetima. Njegova otpornost na rupi\u010dastu i pukotinsku koroziju \u010dini ga popularnim izborom u kemijskoj preradi, tvornicama papira i primjenama u proizvodnji celuloze i papira.<\/p>\n<h3>Visoka \u010dvrsto\u0107a i granica razvla\u010denja dupleks nehr\u0111aju\u0107eg \u010delika<\/h3>\n<p>Duplex nehr\u0111aju\u0107i \u010delik ima visoku \u010dvrsto\u0107u i granicu razvla\u010denja u usporedbi s drugim vrstama nehr\u0111aju\u0107eg \u010delika. Njegova jedinstvena mikrostruktura uravnote\u017euje snagu i \u010dvrsto\u0107u, \u010dine\u0107i ga vrlo otpornim na pritisak. Njegova visoka granica razvla\u010denja odgovara mu u okru\u017eenjima s velikim stresom, poput kemijske i petrokemijske industrije. Njegova \u017eilavost omogu\u0107uje mu da izdr\u017ei udarna optere\u0107enja i toplinske cikluse, \u0161to ga \u010dini idealnim za primjene na moru gdje struktura mo\u017ee do\u017eivjeti ekstremne i nagle promjene tlaka.<\/p>\n<p>Zaklju\u010dno, duplex nehr\u0111aju\u0107i \u010delik izvrstan je izbor za primjene koje zahtijevaju visoku \u010dvrsto\u0107u, otpornost na koroziju i trajnost. Njegova jedinstvena kombinacija austenitnih i feritnih mikrostruktura i visok sadr\u017eaj kroma, molibdena i du\u0161ika daje mu vrhunska svojstva prikladna za razne zahtjevne primjene u nekoliko industrija.<\/p>\n<h2>Koje su uobi\u010dajene primjene duplex nehr\u0111aju\u0107eg \u010delika?<\/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=\"Koje su uobi\u010dajene primjene duplex nehr\u0111aju\u0107eg \u010delika?\" 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 nehr\u0111aju\u0107i \u010delik je vrsta \u010delika koja se sastoji od austenitnih i feritnih \u010deli\u010dnih struktura u pribli\u017eno jednakim omjerima. Ova kombinacija tvori jedinstvenu mikrostrukturu s iznimnom \u010dvrsto\u0107om i otporno\u0161\u0107u na koroziju, \u0161to je \u010dini posebno pogodnom za te\u0161ke uvjete rada. Duplex nehr\u0111aju\u0107i \u010delik sadr\u017ei visoke razine kroma, molibdena i du\u0161ika, \u0161to dodatno pridonosi njegovoj \u010dvrsto\u0107i i otpornosti na koroziju.<\/p>\n<h3>Primjena Duplex nehr\u0111aju\u0107eg \u010delika u industriji nafte i plina<\/h3>\n<p>Duplex nehr\u0111aju\u0107i \u010delik intenzivno se koristi u industriji nafte i plina zbog svoje sposobnosti da izdr\u017ei izlaganje te\u0161kim okru\u017eenjima, visokom tlaku i korozivnim tvarima. Obi\u010dno se koristi za opremu kao \u0161to su podmorski cjevovodi, uzlazni vodovi, ventili, offshore platforme i oprema za obradu. Superiorna \u010dvrsto\u0107a i otpornost na pucanje uslijed zamora Duplex nehr\u0111aju\u0107eg \u010delika tako\u0111er ga \u010dine idealnim za primjenu kod bu\u0161enja.<\/p>\n<h3>Primjene kemijske obrade dupleks nehr\u0111aju\u0107eg \u010delika<\/h3>\n<p>Duplex nehr\u0111aju\u0107i \u010delik na\u0161iroko se koristi u kemijskoj industriji zbog svoje visoke otpornosti na koroziju uzrokovanu kemikalijama i visokim temperaturama. Obi\u010dno se koristi u reaktorima, izmjenjiva\u010dima topline i spremnicima. Duplex nehr\u0111aju\u0107i \u010delik ima visoku otpornost na rupi\u010dastu koroziju i pucanje uslijed korozije uslijed naprezanja klorida, \u0161to ga \u010dini posebno prikladnim za upotrebu u okru\u017eenjima koja sadr\u017ee klor i fosfate.<\/p>\n<h3>Primjena Duplex nehr\u0111aju\u0107eg \u010delika u prehrambenoj industriji<\/h3>\n<p>Duplex nehr\u0111aju\u0107i \u010delik sve se vi\u0161e koristi u prehrambenoj industriji zbog svoje visoke otpornosti na koroziju i izvrsnih higijenskih svojstava. Obi\u010dno se koristi za opremu kao \u0161to su spremnici, cijevi i filtri, koji zahtijevaju \u010desto \u010di\u0161\u0107enje i sterilizaciju. Sposobnost Duplex nehr\u0111aju\u0107eg \u010delika da izdr\u017ei opetovano izlaganje visokim temperaturama i agresivnim sredstvima za \u010di\u0161\u0107enje \u010dini ga idealnim za primjenu u prehrambenoj industriji.<\/p>\n<h3>Primjena dupleks nehr\u0111aju\u0107eg \u010delika u industriji obrade vode<\/h3>\n<p>Duplex nehr\u0111aju\u0107i \u010delik intenzivno se koristi u industriji za obradu vode zbog svoje visoke otpornosti na koroziju i eroziju. Obi\u010dno se koristi za opremu kao \u0161to su pumpe, filtri i spremnici, te u sustavima za desalinizaciju i pro\u010di\u0161\u0107avanje otpadnih voda. Sposobnost Duplex nehr\u0111aju\u0107eg \u010delika da izdr\u017ei izlaganje morskoj vodi i drugim agresivnim okru\u017eenjima \u010dini ga posebno prikladnim za upotrebu u industriji obrade vode.<\/p>\n<h3>Primjena Duplex nehr\u0111aju\u0107eg \u010delika u gra\u0111evinskoj industriji<\/h3>\n<p>Duplex nehr\u0111aju\u0107i \u010delik sve se vi\u0161e koristi u gra\u0111evinarstvu zbog svoje izvrsne \u010dvrsto\u0107e i otpornosti na koroziju. Obi\u010dno se koristi za mostove, strukturne komponente i armaturne \u0161ipke. Duplex nehr\u0111aju\u0107i \u010delik ima visok omjer \u010dvrsto\u0107e i te\u017eine, vrhunsku otpornost na rupi\u010dastu koroziju i nisko toplinsko \u0161irenje \u010dine ga idealnim materijalom za upotrebu u gra\u0111evinskoj industriji.<\/p>\n<p>Zaklju\u010dno, Duplex nehr\u0111aju\u0107i \u010delik je jedinstvena vrsta \u010delika koja sadr\u017ei i austenitnu i feritnu strukturu. Opse\u017eno se koristi u industriji nafte i plina, kemijskoj preradi, preradi hrane, obradi vode i gra\u0111evinarstvu zbog svoje iznimne \u010dvrsto\u0107e i otpornosti na koroziju. Svaka industrija ima specifi\u010dne primjene za Duplex nehr\u0111aju\u0107i \u010delik, \u0161to je omogu\u0107eno njegovom vrhunskom kvalitetom i tehni\u010dkim specifikacijama.<\/p>\n<h2>Kako odabrati pravi duplex nehr\u0111aju\u0107i \u010delik?<\/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=\"Kako odabrati pravi duplex nehr\u0111aju\u0107i \u010delik?\" 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>Duplex nehr\u0111aju\u0107i \u010delik je vrsta nehr\u0111aju\u0107eg \u010delika koji sadr\u017ei i austenitne i feritne mikrostrukture u svojoj kristalnoj re\u0161etki. Ova jedinstvena kombinacija struktura daje dupleks nehr\u0111aju\u0107em \u010deliku visoku otpornost na koroziju i izvrsna mehani\u010dka svojstva, \u0161to ga \u010dini prikladnim za razli\u010dite primjene, uklju\u010duju\u0107i kemijsku i petrokemijsku industriju, brodogradnju te proizvodnju nafte i plina.<\/p>\n<h3>Dvostruki kriteriji odabira nehr\u0111aju\u0107eg \u010delika<\/h3>\n<p>Prilikom odabira odgovaraju\u0107eg stupnja duplex nehr\u0111aju\u0107eg \u010delika, va\u017eno je uzeti u obzir okoli\u0161, potrebnu \u010dvrsto\u0107u, otpornost na koroziju i mogu\u0107nost pucanja ili rupa. Naj\u010de\u0161\u0107e duplex kvalitete uklju\u010duju 2205, 2304, 2507 i Z100. 2205 je svestrani stupanj koji nudi izvrsnu otpornost na koroziju, visoku \u010dvrsto\u0107u i jednostavnost izrade. 2304 se \u010desto koristi u konstrukcijskim primjenama, pru\u017eaju\u0107i vrhunsku otpornost na koroziju i visoku \u010dvrsto\u0107u. 2507 nudi najve\u0107u \u010dvrsto\u0107u i otpornost na koroziju dvostrukih razreda, dok Z100 pru\u017ea visoku otpornost na koroziju uz ni\u017eu cijenu.<\/p>\n<h3>\u010cimbenici koje treba uzeti u obzir za odabir pravog obostranog nehr\u0111aju\u0107eg \u010delika<\/h3>\n<p>Okru\u017eenje u kojem \u0107e se duplex nehr\u0111aju\u0107i \u010delik koristiti klju\u010dna je odrednica pri odabiru odgovaraju\u0107e kvalitete. Korozivna okru\u017eenja, visoke temperature i izlo\u017eenost okru\u017eenjima visokog stresa \u010dimbenici su koje treba uzeti u obzir. Odabrana kvaliteta tako\u0111er treba zadovoljiti specifi\u010dne zahtjeve \u010dvrsto\u0107e primjene. Osim toga, va\u017eno je uzeti u obzir mogu\u0107nost pucanja i udubljenja, \u0161to mo\u017ee zna\u010dajno utjecati na dugovje\u010dnost konstrukcija i opreme.<\/p>\n<h3>Primjena Duplex vrsta nehr\u0111aju\u0107eg \u010delika<\/h3>\n<p>Duplex nehr\u0111aju\u0107i \u010delik koristi se u raznim industrijskim primjenama, uklju\u010duju\u0107i rafiniranje nafte, kemijsku obradu i brodogradnju. Izvrsna otpornost na koroziju i visoka \u010dvrsto\u0107a \u010dine ga prikladnim za sustave cjevovoda, spremnike za skladi\u0161tenje i tla\u010dne posude. Osim toga, dvostruki nehr\u0111aju\u0107i \u010delik idealan je za industrijske primjene gdje su trajnost i sigurnost primarni.<\/p>\n<h3>Legiraju\u0107i elementi koji se koriste u dupleksnim vrstama nehr\u0111aju\u0107eg \u010delika<\/h3>\n<p>Jedno od jedinstvenih svojstava duplex nehr\u0111aju\u0107eg \u010delika su posebni legiraju\u0107i elementi koji se dodaju radi pove\u0107anja njegove \u010dvrsto\u0107e i otpornosti na koroziju. Krom i molibden dodaju se za pobolj\u0161anje otpornosti na koroziju, dok se du\u0161ik i nikal dodaju za pove\u0107anje \u010dvrsto\u0107e. Drugi elementi, poput volframa i bakra, tako\u0111er se mogu dodati kako bi se dodatno pobolj\u0161ala odre\u0111ena svojstva.<\/p>\n<h3>Svojstva i karakteristike Duplex vrsta nehr\u0111aju\u0107eg \u010delika<\/h3>\n<p>Svojstva dupleks tipova nehr\u0111aju\u0107eg \u010delika variraju ovisno o specifi\u010dnim dodanim elementima legure, ali uobi\u010dajene karakteristike uklju\u010duju visoku \u010dvrsto\u0107u, izvrsnu otpornost na koroziju i dobru \u017eilavost. Mikrostruktura je tako\u0111er vrlo otporna na pucanje od korozije, \u0161to ga \u010dini pogodnim za okru\u017eenja s visokim stresom. Zavarljivost i izrada tako\u0111er su va\u017ena razmatranja, pri \u010demu ve\u0107ina dupleks tipova zahtijeva pa\u017eljivu pripremu i kontrolu tijekom zavarivanja kako bi se izbjegli problemi poput vru\u0107ih pukotina i izobli\u010denja.<\/p>\n<p><strong>Preporuka za \u010ditanje: <\/strong><a href=\"https:\/\/china-maching.com\/hr\/cnc-obrada\/cnc-obrada-nehrdajuceg-celika\/\" target=\"_blank\">Otkrijte prednosti CNC obrade nehr\u0111aju\u0107eg \u010delika<\/a><\/p>\n<h2>\u010cesto postavljana pitanja<\/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=\"\u010cesto postavljana pitanja\" 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>P: \u0160to je UNS S31803?<\/h3>\n<p>O: UNS S31803 dvostruka je \u010deli\u010dna vrsta nehr\u0111aju\u0107eg \u010delika s feritno-austenitnom mikrostrukturom koja se sastoji od austenitne i feritne faze u pribli\u017eno jednakim omjerima.<\/p>\n<h3>P: Koja je razlika izme\u0111u UNS S31803 i S32205?<\/h3>\n<p>O: S31803 i S32205 su duplex nehr\u0111aju\u0107eg \u010delika, ali S32205 ima ve\u0107u otpornost na koroziju zbog vi\u0161eg sadr\u017eaja kroma, molibdena i du\u0161ika. S32205 se smatra super dupleks \u010delikom, dok je S31803 standardni dupleks \u010delik.<\/p>\n<h3>P: Koja su mehani\u010dka svojstva UNS S31803?<\/h3>\n<p>O: UNS S31803 ima visoku granicu te\u010denja i vla\u010dnu \u010dvrsto\u0107u, dobru fleksibilnost i izvrsnu udarnu \u017eilavost na sobnim i niskim temperaturama.<\/p>\n<h3>P: Kakav je kemijski sastav UNS S31803 duplex nehr\u0111aju\u0107eg \u010delika?<\/h3>\n<p>O: Kemijski sastav UNS S31803 obi\u010dno uklju\u010duje pribli\u017eno 22% krom, 5-6% nikal, 3% molibden i 0,15% \u2013 0,30% du\u0161ik, zajedno s malim koli\u010dinama drugih elemenata.<\/p>\n<h3>P: Koja su fizi\u010dka svojstva UNS S31803?<\/h3>\n<p>O: UNS S31803 ima gusto\u0107u od 7,8 g\/cm3, tali\u0161te od 1350-1450\u00b0C (2462-2642\u00b0F) i specifi\u010dni toplinski kapacitet od 0,5 J\/g\u00b7K na 20\u00b0C (68\u00b0F) ).<\/p>\n<h3>P: Kolika je otpornost na koroziju UNS S31803?<\/h3>\n<p>O: UNS S31803 ima izvrsnu otpornost na kloridnu to\u010dku i pukotinsku koroziju, \u0161to ga \u010dini prikladnim materijalom za kori\u0161tenje u korozivnim okru\u017eenjima.<\/p>\n<h3>P: Kako se zavaruje UNS S31803 \u010delik?<\/h3>\n<p>O: UNS S31803 mo\u017ee se zavarivati kori\u0161tenjem ve\u0107ine standardnih tehnika zavarivanja, uklju\u010duju\u0107i elektrolu\u010dno zavarivanje plinskim volframom (GTAW), elektrolu\u010dno zavarivanje plinskim metalom (GMAW) i elektrolu\u010dno zavarivanje za\u0161ti\u0107enim metalom (SMAW).<\/p>\n<h3>P: Kako se UNS S31803 \u017eari?<\/h3>\n<p>O: UNS S31803 obi\u010dno se \u017eari izme\u0111u 1025-1075\u00b0C (1877-1967\u00b0F), nakon \u010dega slijedi brzo hla\u0111enje u vodi ili zraku.<\/p>\n<h3>P: Zahtijeva li UNS S31803 toplinsku obradu?<\/h3>\n<p>O: Toplinska obrada mo\u017ee biti potrebna za neke primjene kako bi se pobolj\u0161ala mehani\u010dka svojstva UNS S31803. Me\u0111utim, u mnogim je slu\u010dajevima dovoljno zavareno ili proizvedeno stanje.<\/p>\n<h3>P: \u0160to je duplex 2205?<\/h3>\n<p>O: Duplex 2205 je stupanj duplex nehr\u0111aju\u0107eg \u010delika sli\u010dan UNS S31803, ali ima malo ve\u0107i sadr\u017eaj kroma, molibdena i du\u0161ika za pobolj\u0161anu otpornost na koroziju i snagu.<\/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 v27.3) - 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