{"id":2179,"date":"2021-07-19T06:18:56","date_gmt":"2021-07-19T06:18:56","guid":{"rendered":"https:\/\/wldstainless.com\/?p=2179"},"modified":"2021-07-19T08:32:55","modified_gmt":"2021-07-19T08:32:55","slug":"the-advantages-of-904l-stainless-steel","status":"publish","type":"post","link":"https:\/\/wldstainless.com\/tr\/the-advantages-of-904l-stainless-steel\/","title":{"rendered":"904L paslanmaz \u00e7eli\u011fin avantajlar\u0131"},"content":{"rendered":"<p>S\u00fcper \u00f6stenitik paslanmaz \u00e7elik 904L (<a href=\"https:\/\/wldstainless.com\/materials\/austenitic-stainless-steel\/904l-stainless-steel\/\">UNS N08904<\/a>, EN1.4539), zorlu korozyon ko\u015fullar\u0131 i\u00e7in \u00f6zel olarak tasarlanm\u0131\u015f, d\u00fc\u015f\u00fck karbon i\u00e7erikli, y\u00fcksek ala\u015f\u0131ml\u0131 \u00d6stenitik paslanmaz \u00e7eliktir. Y\u00fcksek krom ve nikel i\u00e7eri\u011fine sahiptir, bak\u0131r ilavesi onu g\u00fc\u00e7l\u00fc asit direncine, \u00f6zellikle seyreltik s\u00fclf\u00fcrik asit, \u00f6zellikle klor\u00fcr bo\u015flu\u011fu korozyonuna ve stresli korozyon \u00e7atlamas\u0131na kar\u015f\u0131 y\u00fcksek dirence sahip k\u0131lar, erozyon lekeleri ve \u00e7atlaklar\u0131n ortaya \u00e7\u0131kmas\u0131 kolay de\u011fildir, oyuklanma direnci hafiftir di\u011fer \u00e7eliklerden daha iyidir. \u0130yi i\u015flenebilirlik ve kaynaklanabilirli\u011fe sahiptir, bir\u00e7ok end\u00fcstriyel alanda geni\u015f bir uygulama yelpazesine sahiptir: reakt\u00f6rler vb. gibi petrokimya kaplar\u0131 ve boru hatlar\u0131; Enerji santrali baca gaz\u0131 k\u00fck\u00fcrt giderme \u00fcnitesi; Deniz suyu ar\u0131tma tesisi, deniz suyu \u0131s\u0131 e\u015fanj\u00f6r\u00fc; Ka\u011f\u0131t end\u00fcstrisi ekipmanlar\u0131, ila\u00e7 end\u00fcstrisi, g\u0131da end\u00fcstrisi ve di\u011fer alanlar.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Metalografik yap\u0131<\/strong><\/p>\n<p>904L tamamen \u00f6stenitiktir. Y\u00fcksek molibden i\u00e7eri\u011fine sahip \u00f6stenitik paslanmaz \u00e7eliklerle kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda 904L, ferrit ve \u03b1 faz\u0131n\u0131n \u00e7\u00f6kelmesine kar\u015f\u0131 duyars\u0131zd\u0131r.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Kaynak performans\u0131<\/strong><\/p>\n<p>Genel paslanmaz \u00e7elikte oldu\u011fu gibi 904 L de \u00e7e\u015fitli \u015fekillerde kaynak yap\u0131labilir. En yayg\u0131n kullan\u0131lan kaynak y\u00f6ntemleri manuel ark kayna\u011f\u0131 veya inert gaz korumal\u0131 kaynakt\u0131r. Elektrot veya tel metal, baz metalin bile\u015fimine dayan\u0131r ve daha y\u00fcksek bir safl\u0131\u011fa sahiptir. Molibden i\u00e7eri\u011fi ana metalden daha y\u00fcksektir. So\u011fuk d\u0131\u015f ortamlar d\u0131\u015f\u0131nda kaynak \u00f6ncesi genellikle \u00f6n \u0131s\u0131tmaya gerek yoktur, su buhar\u0131n\u0131n yo\u011funla\u015fmas\u0131n\u0131 \u00f6nlemek i\u00e7in ba\u011flant\u0131 k\u0131sm\u0131 veya biti\u015fik alan e\u015fit \u015fekilde \u0131s\u0131t\u0131labilir. Karbon birikmesine ve tanecikler aras\u0131 korozyona neden olmamak i\u00e7in yerel s\u0131cakl\u0131\u011f\u0131n 100 \u00b0 C&#039;yi ge\u00e7memesi gerekti\u011fini unutmay\u0131n. Kaynak i\u00e7in k\u00fc\u00e7\u00fck hat enerjisi, s\u00fcreklilik ve h\u0131zl\u0131 kaynak h\u0131z\u0131 kullan\u0131lmal\u0131d\u0131r. Kaynak sonras\u0131 genellikle \u0131s\u0131l i\u015fleme gerek duyulmaz. Is\u0131l i\u015fleme ihtiya\u00e7 duyulursa 1100 ~ 1150\u00b0C&#039;ye \u0131s\u0131t\u0131lmal\u0131 ve ard\u0131ndan h\u0131zla so\u011futulmal\u0131d\u0131r. E\u015fle\u015fen kaynak malzemeleri: elektrot (E385-16\/17), kaynak teli (ER385).<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u0130\u015fleme performans\u0131<\/strong><\/p>\n<p>\u0130\u015fleme \u00f6zellikleri <a href=\"https:\/\/wldstainless.com\/materials\/austenitic-stainless-steel\/904l-stainless-steel\/\">904 litre<\/a> di\u011fer \u00f6stenitik paslanmaz \u00e7eliklere benzer ve i\u015fleme s\u0131ras\u0131nda kesicinin yap\u0131\u015fkanl\u0131\u011f\u0131 ve i\u015f par\u00e7as\u0131n\u0131n sertle\u015fmesi e\u011filimi vard\u0131r. Kesme so\u011futucusu olarak vulkanizasyon ve klorlu ya\u011f ile pozitif \u00f6n a\u00e7\u0131l\u0131 karb\u00fcr kesici tak\u0131mlar kullan\u0131lmal\u0131, ekipman ve proses, i\u015f sertle\u015fmesini azaltacak \u00f6nc\u00fcl olmal\u0131d\u0131r. Kesim i\u015fleminde yava\u015f kesme h\u0131z\u0131 ve ilerlemeden ka\u00e7\u0131n\u0131lmal\u0131d\u0131r.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>904L paslanmaz \u00e7eli\u011fin korozyon direnci<\/strong><\/p>\n<p>904L iyi aktivasyon-pasivasyon d\u00f6n\u00fc\u015f\u00fcm kabiliyetine sahiptir, m\u00fckemmel korozyon direncine, oyuklanma direncine, iyi \u00e7atlak korozyon direncine ve s\u00fclf\u00fcrik asit, asetik asit, formik asit, fosforik asit gibi oksitleyici olmayan asitlerde stres korozyon direncine sahiptir, iyi korozyon direncine sahiptir, Klor\u00fcr iyonu i\u00e7eren n\u00f6tr ortamda. 70\u00b0C&#039;nin alt\u0131ndaki t\u00fcm s\u00fclf\u00fcrik asit konsantrasyonlar\u0131 i\u00e7in uygundur ve normal bas\u0131n\u00e7 alt\u0131nda herhangi bir konsantrasyonda ve s\u0131cakl\u0131kta asetik asit ve formik asit ve asetik asit kar\u0131\u015f\u0131m\u0131na kar\u015f\u0131 iyi korozyon direncine sahiptir.<\/p>\n<p>904L&#039;nin d\u00fc\u015f\u00fck karbon i\u00e7eri\u011fi (Maks. 0,020%) nedeniyle normal \u0131s\u0131l i\u015flem ve kaynak ko\u015fullar\u0131nda karb\u00fcr \u00e7\u00f6kelmesi olmaz. Bu, normalde \u0131s\u0131l i\u015flem ve kaynak sonras\u0131 olu\u015fan taneler aras\u0131 korozyon potansiyelini ortadan kald\u0131r\u0131r. Y\u00fcksek Cr-Ni-Mo i\u00e7eri\u011fi ve bak\u0131r ilavesi, 904L&#039;nin s\u00fclf\u00fcrik asit ve formik asit gibi indirgeyici ortamlarda bile pasifle\u015ftirilmesini sa\u011flar. Y\u00fcksek nikel i\u00e7eri\u011fi, aktif durumda d\u00fc\u015f\u00fck korozyon oran\u0131na sahip olmas\u0131n\u0131 sa\u011flar. 0~98% saf s\u00fclf\u00fcrik asit konsantrasyon aral\u0131\u011f\u0131nda, 904L 40\u00b0C&#039;ye kadar s\u0131cakl\u0131klarda kullan\u0131labilir. 0~85% saf fosforik asit konsantrasyon aral\u0131\u011f\u0131nda hala iyi korozyon direncine sahiptir.<\/p>\n<p><a href=\"https:\/\/wldstainless.com\/materials\/austenitic-stainless-steel\/904l-stainless-steel\/\">904L SS<\/a> T\u00fcm fosfatlara kar\u015f\u0131 korozyon direnci a\u00e7\u0131s\u0131ndan s\u0131radan paslanmaz \u00e7elikten \u00fcst\u00fcnd\u00fcr. Y\u00fcksek derecede oksitleyici nitrik asitte 904L, molibden i\u00e7ermeyen ala\u015f\u0131ml\u0131 \u00e7eliklerle kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda zay\u0131f korozyon direncine sahiptir. Hidroklorik asitte 904L&#039;nin kullan\u0131m\u0131, korozyon direncinin geleneksel paslanmaz \u00e7eli\u011fe g\u00f6re daha iyi oldu\u011fu daha d\u00fc\u015f\u00fck bir konsantrasyon olan 1-2% ile s\u0131n\u0131rl\u0131d\u0131r. 904L \u00e7eli\u011fi, \u00e7ukurlar ve yar\u0131klardaki korozyon oranlar\u0131n\u0131 azaltan y\u00fcksek nikel i\u00e7eri\u011fi nedeniyle klor\u00fcr \u00e7\u00f6zeltilerinde, konsantre hidroksit \u00e7\u00f6zeltilerinde ve hidrojen s\u00fclf\u00fcr a\u00e7\u0131s\u0131ndan zengin ortamlarda g\u00fc\u00e7l\u00fc \u00e7atlak korozyon direncine sahiptir. S\u0131radan \u00f6stenitik paslanmaz \u00e7elikler, klor\u00fcr a\u00e7\u0131s\u0131ndan zengin bir ortamda 60\u00b0C&#039;nin \u00fczerindeki s\u0131cakl\u0131klarda stres korozyonuna kar\u015f\u0131 duyarl\u0131 olabilir. Paslanmaz \u00e7eli\u011fin nikel i\u00e7eri\u011fi artt\u0131r\u0131larak bu hassasiyet azalt\u0131labilir.<\/p>","protected":false},"excerpt":{"rendered":"<p>S\u00fcper \u00f6stenitik paslanmaz \u00e7elik 904L (UNS N08904, EN1.4539), zorlu korozyon ko\u015fullar\u0131 i\u00e7in \u00f6zel olarak tasarlanm\u0131\u015f, d\u00fc\u015f\u00fck karbon i\u00e7erikli, y\u00fcksek ala\u015f\u0131ml\u0131 bir \u00d6stenitik paslanmaz \u00e7eliktir. Y\u00fcksek krom i\u00e7eri\u011fi ve nikel i\u00e7eri\u011fine sahiptir, bak\u0131r ilavesi onu g\u00fc\u00e7l\u00fc asit direncine, \u00f6zellikle seyreltik s\u00fclf\u00fcrik asit, \u00f6zellikle klor\u00fcr bo\u015flu\u011fu korozyonuna kar\u015f\u0131 y\u00fcksek dirence sahip k\u0131lar ve [\u2026]<\/p>","protected":false},"author":1,"featured_media":2180,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2179","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/posts\/2179","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/comments?post=2179"}],"version-history":[{"count":1,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/posts\/2179\/revisions"}],"predecessor-version":[{"id":2181,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/posts\/2179\/revisions\/2181"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/media\/2180"}],"wp:attachment":[{"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/media?parent=2179"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/categories?post=2179"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/tags?post=2179"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}