{"id":19841,"date":"2020-05-30T07:01:31","date_gmt":"2020-05-30T07:01:31","guid":{"rendered":"https:\/\/www.meetyoucarbide.com\/?p=19841"},"modified":"2020-05-30T07:05:05","modified_gmt":"2020-05-30T07:05:05","slug":"main-common-malfunction-causes-of-mechanical-seals","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/tr\/mekanik-contalarin-ana-ortak-ariza-nedenleri\/","title":{"rendered":"Mekanik Salmastralarda S\u0131k G\u00f6r\u00fclen Temel Ar\u0131za Nedenleri"},"content":{"rendered":"
Mekanik salmastra, s\u0131v\u0131 bas\u0131nc\u0131n\u0131n etkisi, dengeleme mekanizmas\u0131n\u0131n elastik kuvveti (veya manyetik kuvveti) ve yard\u0131mc\u0131 contan\u0131n i\u015fbirli\u011fi alt\u0131nda d\u00f6nme eksenine dik en az bir \u00e7ift u\u00e7 y\u00fczeyden olu\u015fan s\u0131v\u0131 s\u0131z\u0131nt\u0131s\u0131n\u0131 \u00f6nlemek i\u00e7in bir cihazd\u0131r. yap\u0131\u015fmaya ve nispeten kaymaya devam etmek i\u00e7in.<\/p> Mekanik salmastra yap\u0131s\u0131 esas olarak a\u015fa\u011f\u0131daki elemanlardan olu\u015fur,<\/p> 1. Sabit halka (sabit halka)<\/p> 2. D\u00f6nen halka (hareketli halka)<\/p> 3. Elastik eleman<\/p> 4. Yayl\u0131 koltuk<\/p> 5. Ayar vidas\u0131<\/p> 6. D\u00f6ner halka yard\u0131mc\u0131 conta halkas\u0131<\/p> 7. Sabit halka yard\u0131mc\u0131 conta halkas\u0131<\/p> Anti-rotasyon pimi, sabit halkan\u0131n d\u00f6nmesini \u00f6nlemek i\u00e7in salmastra \u00fczerine sabitlenmi\u015ftir.<\/p> Mekanik salmastra, g\u00fcvenilir s\u0131zd\u0131rmazl\u0131k performans\u0131, k\u00fc\u00e7\u00fck s\u0131z\u0131nt\u0131, uzun servis \u00f6mr\u00fc, daha az g\u00fc\u00e7 kayb\u0131 ve geni\u015f uygulama aral\u0131\u011f\u0131 avantajlar\u0131na sahiptir. \u00c7e\u015fitli teknik alanlarda, \u00f6zellikle y\u00fcksek h\u0131z, y\u00fcksek bas\u0131n\u00e7 fark\u0131 ve pahal\u0131, toksik ve a\u015f\u0131nd\u0131r\u0131c\u0131 i\u015flem ortamlar\u0131n\u0131n \u00e7al\u0131\u015fma ko\u015fullar\u0131nda yayg\u0131n olarak kullan\u0131lmaktad\u0131r. Ayn\u0131 zamanda, mekanik salmastra ekipman\u0131n en zay\u0131f halkalar\u0131ndan biridir.<\/p> Hizmet \u00f6mr\u00fcn\u00fc uzatmak i\u00e7in, do\u011fru s\u00fcrt\u00fcnme \u00e7ifti malzemesini ve sa\u011f u\u00e7 y\u00fcz\u00fcne \u00f6zg\u00fc bas\u0131nc\u0131 se\u00e7menin yan\u0131 s\u0131ra, do\u011fru kurulum ve bak\u0131m da \u00f6nemli bir rol oynayabilir.<\/p> Bu makalede, g\u00fcnl\u00fck bak\u0131m uygulamas\u0131yla mekanik salmastra ar\u0131zas\u0131 ve s\u0131z\u0131nt\u0131s\u0131n\u0131n ana nedenleri analiz edilmi\u015ftir. <\/p> Kimyasal ekipmanlarda kullan\u0131lan \u00e7e\u015fitli mekanik salmastra t\u00fcrleri ve modelleri vard\u0131r, ancak be\u015f ana s\u0131z\u0131nt\u0131 noktas\u0131 vard\u0131r:<\/p> Shaft Mil kovan\u0131 ile mil aras\u0131nda conta;<\/p> Ring Hareketli halka ile mil kovan\u0131 aras\u0131ndaki s\u0131zd\u0131rmazl\u0131k;<\/p> Dynamic Dinamik ve statik halkalar aras\u0131ndaki s\u0131zd\u0131rmazl\u0131k;<\/p> Ring Sabit halka ile sabit halka yuvas\u0131 aras\u0131ndaki s\u0131zd\u0131rmazl\u0131k;<\/p> \u2464 U\u00e7 kapa\u011f\u0131 ile pompa g\u00f6vdesi aras\u0131ndaki contay\u0131 kapat\u0131n.<\/p> Hangi t\u00fcr mekanik salmastra olursa olsun, ana \u00f6zellik s\u0131zd\u0131rmazl\u0131k y\u00fczeyinin d\u00f6nen eksene dik olmas\u0131d\u0131r, yani s\u0131zmas\u0131 kolay eksenel salmastra, s\u0131z\u0131nt\u0131s\u0131 kolay olmayan u\u00e7 contaya de\u011fi\u015ftirilir. Bu nedenle, mekanik salmastra ar\u0131zas\u0131n\u0131n ana formu statik ve dinamik halkalar aras\u0131ndaki a\u015f\u0131nma ar\u0131zas\u0131d\u0131r. Dinamik ve statik halkalar\u0131n u\u00e7 s\u00fcrt\u00fcnme \u00e7iftleri, s\u0131z\u0131nt\u0131y\u0131 \u00f6nlemek i\u00e7in esas olarak yay bask\u0131s\u0131 ile s\u0131k\u0131\u015ft\u0131r\u0131l\u0131r. Dinamik ve statik halkalar ne kadar s\u0131k\u0131 olursa, s\u0131zma olas\u0131l\u0131klar\u0131 o kadar az olur, ancak aralar\u0131ndaki s\u00fcrt\u00fcnme de artar. Dinamik ve statik halkalar\u0131n temas y\u00fczeyleri b\u00fcy\u00fck s\u00fcrt\u00fcnme etkisi alt\u0131nda \u00e7abuk a\u015f\u0131n\u0131r ve son olarak s\u0131zmaz.<\/p> Karars\u0131z i\u015flem ko\u015fullar\u0131 ve k\u00f6t\u00fc kurulumun neden oldu\u011fu titre\u015fim ve ekipman\u0131n tahliye ve buharla\u015fmas\u0131n\u0131n aniden kesilmesi, mekanik salmastran\u0131n dinamik ve statik halkalar\u0131 aras\u0131ndaki s\u0131v\u0131 filmin hasar g\u00f6rmesine neden olacak ve mekanik salmastray\u0131 "kuru" k\u0131lacakt\u0131r. ya\u011flama \u015fart\u0131 olmadan. S\u0131zd\u0131rmazl\u0131k halkas\u0131n\u0131n s\u0131cakl\u0131\u011f\u0131 h\u0131zla y\u00fckselir, baz\u0131lar\u0131 do\u011frudan yanar, baz\u0131lar\u0131 pompa normal \u00e7al\u0131\u015fma durumuna d\u00f6nd\u00fc\u011f\u00fcnde keskin bir \u015fekilde so\u011futulur, termal \u015fok ve par\u00e7alanma olu\u015fturur. K\u00f6t\u00fc y\u0131kama s\u0131v\u0131s\u0131 ve ko\u015fullar\u0131 ayr\u0131ca s\u0131zd\u0131rmazl\u0131k halkas\u0131nda radyal \u00e7atlaklara neden olacak ve dinamik ve statik halkalar\u0131n a\u015f\u0131nma hatas\u0131n\u0131 art\u0131racak termal \u015foka neden olacakt\u0131r. Ayn\u0131 zamanda, grafit halkan\u0131n s\u0131cakl\u0131\u011f\u0131 servis s\u0131cakl\u0131\u011f\u0131n\u0131 a\u015ft\u0131\u011f\u0131nda, kristal grafit halkan\u0131n y\u00fczeyinde \u00e7\u00f6kelir ve daha y\u00fcksek s\u0131cakl\u0131kta s\u00fcrt\u00fcnme \u00e7iftinin yan\u0131nda karbonizasyon meydana gelir ve par\u00e7ac\u0131klar yapmak i\u00e7in s\u00fcrt\u00fcnme \u00e7iftine girer dinamik ve statik halka h\u0131zla a\u015f\u0131n\u0131r.<\/p> Dinamik ve statik halkalar\u0131n s\u0131zd\u0131rmazl\u0131k halkas\u0131n\u0131n montaj\u0131 \u00e7arp\u0131kt\u0131r; salmastra halkas\u0131 ile e\u015fle\u015fen milin veya kovan\u0131n y\u00fczey kaplamas\u0131 yeterli de\u011fildir veya e\u015fle\u015fen boyut \u00e7ok k\u00fc\u00e7\u00fckt\u00fcr; s\u0131zd\u0131rmazl\u0131k halkas\u0131 ile s\u0131zd\u0131rmazl\u0131k ortam\u0131 aras\u0131ndaki fiziksel veya kimyasal reaksiyon, korozyon, deformasyon, ya\u015flanma vb. s\u0131z\u0131nt\u0131ya neden olabilir.<\/p> Mekanik salmastran\u0131n montaj\u0131ndan \u00f6nce, mekanik salmastra bile\u015fenlerinin temizlenmesi temiz de\u011fildir, bile\u015fenler \u00e7\u00fcr\u00fck veya \u00e7izilir; montaj yerinde de\u011fil; yay tertibat\u0131 e\u011fimlidir, sabitleme vidalar\u0131 sabitlenmez; mekanik salmastran\u0131n erken ar\u0131zalanmas\u0131n\u0131n t\u00fcm nedenleri olan s\u00f6kme vs. s\u0131ras\u0131nda mekanik salmastra hasar g\u00f6r\u00fcr.<\/p> Kimyasal tesisteki proses ortam\u0131 \u00f6zelliklerinin \u00e7e\u015fitlili\u011fi, mekanik salmastra tasar\u0131m\u0131n\u0131n yanl\u0131\u015f se\u00e7imi, s\u0131zd\u0131rmazl\u0131k ucu y\u00fcz\u00fcn\u00fcn k\u00fc\u00e7\u00fck ve b\u00fcy\u00fck bas\u0131n\u00e7 oran\u0131 veya s\u0131zd\u0131rmazl\u0131k malzemesinin b\u00fcy\u00fck b\u00fcz\u00fclmesi nedeniyle, mekanik salmastra ar\u0131zas\u0131na ve s\u0131z\u0131nt\u0131s\u0131na neden olmak \u00e7ok kolayd\u0131r.<\/p> Yukar\u0131daki analize g\u00f6re, mekanik salmastran\u0131n hizmet \u00f6mr\u00fcn\u00fc uzatmak i\u00e7in a\u015fa\u011f\u0131daki \u00f6nlemler ve bak\u0131m y\u00f6ntemleri al\u0131nmal\u0131d\u0131r.<\/p> Yay\u0131n s\u0131k\u0131\u015ft\u0131rma miktar\u0131n\u0131n ayarlanmas\u0131, mekanik salmastran\u0131n u\u00e7 y\u00fcz\u00fcn\u00fcn, conta performans\u0131 ve servis \u00f6mr\u00fcn\u00fcn \u00f6nemli parametreleri ile yap\u0131sal s\u0131zd\u0131rmazl\u0131k tipi, yay boyutu ve orta bas\u0131n\u00e7 ile ilgili \u00f6zel bas\u0131nc\u0131n\u0131 ayarlamakt\u0131r. U\u00e7 y\u00fcz\u00fcn \u00f6zg\u00fcl bas\u0131nc\u0131 \u00e7ok b\u00fcy\u00fckse, s\u00fcrt\u00fcnme \u00e7ifti hasar g\u00f6r\u00fcr; e\u011fer \u00f6zg\u00fcl bas\u0131n\u00e7 \u00e7ok k\u00fc\u00e7\u00fckse, s\u0131z\u0131nt\u0131 kolayd\u0131r, bu nedenle \u00fcretici genellikle uygun bir aral\u0131k verir, genellikle 3-6kg \/ cm2. Yay\u0131n a'n\u0131n serbest uzunlu\u011fu, yay sertli\u011fi K (birim s\u0131k\u0131\u015ft\u0131rma \u00fcretilirken ta\u015f\u0131yacak y\u00fck) ve belirtilen \u00f6zel bas\u0131n\u00e7 P, \u00fcretici taraf\u0131ndan verilen parametrelerdir. S\u0131k\u0131\u015ft\u0131r\u0131lm\u0131\u015f boyut B oldu\u011funda, p \/ (ab) = k ve yay kurulumunun s\u0131k\u0131\u015ft\u0131r\u0131lm\u0131\u015f boyutu olan B = AP \/ K olur. Kurulumdan sonra yay\u0131n boyutu \u00e7ok b\u00fcy\u00fckse, ayar yast\u0131\u011f\u0131n\u0131n kal\u0131nl\u0131\u011f\u0131 yay yuvas\u0131 ile yay aras\u0131nda artt\u0131r\u0131labilir. Boyut \u00e7ok k\u00fc\u00e7\u00fckse, ayarlama pedinin kal\u0131nl\u0131\u011f\u0131 azalt\u0131labilir. Ayar pedinin kal\u0131nl\u0131\u011f\u0131 bir mikrometre ile \u00f6l\u00e7\u00fclmelidir.<\/p> Hareketli halkan\u0131n s\u0131zd\u0131rmazl\u0131k halkas\u0131n\u0131n \u00e7ok s\u0131k\u0131 olmas\u0131 zararl\u0131 ve yarars\u0131zd\u0131r. \u0130lk olarak, conta halkas\u0131 ile mil kovan\u0131 aras\u0131ndaki a\u015f\u0131nmay\u0131 \u015fiddetlendirecek ve erken s\u0131z\u0131nt\u0131ya neden olacakt\u0131r; \u0130kincisi, \u00e7al\u0131\u015fma ko\u015fulunun s\u0131k s\u0131k de\u011fi\u015fti\u011fi zaman ayarlanamayan hareketli halkan\u0131n eksenel ayar ve hareket direncini art\u0131racakt\u0131r; \u00fc\u00e7\u00fcnc\u00fc, bahar a\u015f\u0131r\u0131 yorgunluk nedeniyle kolayca zarar g\u00f6recektir; d\u00f6rd\u00fcnc\u00fc olarak, hareketli halkan\u0131n s\u0131zd\u0131rmazl\u0131k halkas\u0131n\u0131 deforme eder ve s\u0131zd\u0131rmazl\u0131k etkisini etkiler. Hareketli halkan\u0131n y\u00fczer \u00f6zelli\u011fini sa\u011flamak i\u00e7in, i\u00e7 \u00e7ap\u0131 milin titre\u015fim ve sapmas\u0131n\u0131 telafi etmek i\u00e7in kullan\u0131lan mil \u00e7ap\u0131ndan 0,5-1 mm daha b\u00fcy\u00fckt\u00fcr, ancak bo\u015fluk \u00e7ok b\u00fcy\u00fck olmamal\u0131d\u0131r, aksi takdirde s\u0131zd\u0131rmazl\u0131k hareketli halkan\u0131n halkas\u0131 kenetlenecek ve mekanik salmastran\u0131n mekanik performans\u0131 zarar g\u00f6recektir. S\u0131zd\u0131rmazl\u0131k halkas\u0131n\u0131n s\u0131zd\u0131rmazl\u0131\u011f\u0131, ya\u011flay\u0131c\u0131 uyguland\u0131ktan sonra bir elin bas\u0131nc\u0131na tabi olmal\u0131d\u0131r.<\/p> Statik halka conta temelde statik bir durumdad\u0131r ve nispeten s\u0131k\u0131 ise s\u0131zd\u0131rmazl\u0131k etkisi daha iyidir, ancak \u00e7ok s\u0131k\u0131 a\u015fa\u011f\u0131dakilere yol a\u00e7ar: ilk olarak, statik halka conta a\u015f\u0131r\u0131 deforme olur, bu da s\u0131zd\u0131rmazl\u0131k etkisini etkiler; ikincisi, statik halka malzemesi \u00e7o\u011funlukla genellikle k\u0131r\u0131lgan olan grafittir ve a\u015f\u0131r\u0131 stres kolayca par\u00e7alanmaya yol a\u00e7acakt\u0131r; \u00fc\u00e7\u00fcnc\u00fc olarak, statik halkaya kolayca zarar verecek \u015fekilde tak\u0131lmas\u0131 ve s\u00f6k\u00fclmesi zordur. Bu nedenle, statik halkan\u0131n i\u00e7 \u00e7ap\u0131 genellikle mil \u00e7ap\u0131ndan 1-2 mm daha b\u00fcy\u00fckt\u00fcr ve s\u0131zd\u0131rmazl\u0131k halkas\u0131n\u0131n s\u0131k\u0131l\u0131\u011f\u0131, ya\u011flay\u0131c\u0131 uyguland\u0131ktan sonra her iki elin bas\u0131nc\u0131na tabidir. El hafif\u00e7e bast\u0131r\u0131labilirse, \u00e7ok gev\u015fek olacakt\u0131r; el zorla bast\u0131r\u0131lamazsa, \u00e7ok s\u0131k\u0131 olacakt\u0131r.<\/p> G\u00f6receli olarak, yeni mekanik salmastran\u0131n kullan\u0131lmas\u0131n\u0131n etkisi eskisinden daha iyidir, ancak yeni mekanik salmastran\u0131n kalitesi veya malzeme se\u00e7imi do\u011fru olmad\u0131\u011f\u0131nda, montaj boyutu hatas\u0131 s\u0131zd\u0131rmazl\u0131k etkisini etkileyecektir. Polimerize edilebilir ve derin ge\u00e7irgen ortamlarda, statik halka \u00fczerinde a\u015f\u0131r\u0131 a\u015f\u0131nma yoksa (s\u0131zd\u0131rmazl\u0131k y\u00fczeyi \u00e7atlad\u0131\u011f\u0131nda, d\u00fc\u015f\u00fcr\u00fcld\u00fc\u011f\u00fcnde, \u00e7izildi\u011finde, pockmarked, fla\u015f ve eksantrik a\u015f\u0131nma ve \u00e7izik ve pockmarked noktalar t\u00fcm s\u0131zd\u0131rmazl\u0131k y\u00fcz\u00fcne n\u00fcfuz etti\u011finde, a\u015f\u0131r\u0131 a\u015f\u0131nma olarak adland\u0131r\u0131l\u0131r), de\u011fi\u015ftirmemek daha iyidir. Statik halka, statik halka yuvas\u0131nda uzun s\u00fcre statik bir durumda oldu\u011fundan, polimer ve safs\u0131zl\u0131klar bir b\u00fct\u00fcn olarak biriktirilir, bu da daha iyi bir s\u0131zd\u0131rmazl\u0131k rol\u00fc oynar.<\/p> Mekanik salmastra s\u0131zd\u0131\u011f\u0131nda, s\u00f6kmek ve onarmak i\u00e7in acele etmeyin. Bazen conta zarar g\u00f6rmeyebilir. Sadece \u00e7al\u0131\u015fma ko\u015fullar\u0131n\u0131 ayarlay\u0131n veya contay\u0131 uygun \u015fekilde ayarlay\u0131n s\u0131z\u0131nt\u0131y\u0131 ortadan kald\u0131rabilir. \u00d6rne\u011fin, yay\u0131n s\u0131k\u0131\u015ft\u0131rma miktar\u0131n\u0131 ayarlay\u0131n, \u00e7al\u0131\u015fan ekipman\u0131n titre\u015fimini ortadan kald\u0131r\u0131n, yay\u0131n elastikiyetini kaybeden \u00f6l\u00e7e\u011fi ve dinamik ve statik halkalar\u0131n s\u00fcrt\u00fcnme \u00e7iftlerindeki \u00f6l\u00e7e\u011fi kald\u0131r\u0131n. Bu \u015fekilde, sadece israftan ka\u00e7\u0131nmakla kalmaz, ayn\u0131 zamanda pratik problemleri de \u00e7\u00f6zebilir. Ayn\u0131 zamanda ar\u0131za yarg\u0131lama yetene\u011fini do\u011frulayabilir ve bak\u0131m kalitesini art\u0131rmak i\u00e7in bak\u0131m deneyimi biriktirebilir.<\/p><\/div>","protected":false},"excerpt":{"rendered":" Mechanical seal is a device to prevent fluid leakage, which is composed of at least one pair of end faces perpendicular to the rotation axis under the action of fluid pressure, the elastic force (or magnetic force) of compensation mechanism and the cooperation of auxiliary seal to keep sticking and relatively sliding. The mechanical seal…<\/p>","protected":false},"author":2,"featured_media":19842,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[79],"tags":[],"class_list":["post-19841","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-materials-weekly"],"jetpack_featured_media_url":"https:\/\/www.meetyoucarbide.com\/wp-content\/uploads\/2020\/05\/\u56fe\u72472-10.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/posts\/19841","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/comments?post=19841"}],"version-history":[{"count":0,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/posts\/19841\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/media\/19842"}],"wp:attachment":[{"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/media?parent=19841"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/categories?post=19841"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/tags?post=19841"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}<\/figure>
Mekanik salmastra ar\u0131zas\u0131 ve s\u0131z\u0131nt\u0131s\u0131n\u0131n neden analizi<\/h2>
<\/figure>
Dinamik ve statik halkan\u0131n u\u00e7 y\u00fcz\u00fcn\u00fcn a\u015f\u0131nmas\u0131ndan kaynaklanan mekanik salmastra s\u0131z\u0131nt\u0131s\u0131<\/h3>
Karars\u0131z i\u015flem ko\u015fullar\u0131 ve yanl\u0131\u015f kurulum nedeniyle mekanik salmastra s\u0131z\u0131nt\u0131s\u0131<\/h3>
Mekanik salmastran\u0131n s\u0131zd\u0131rmazl\u0131k halkas\u0131n\u0131n ar\u0131zalanmas\u0131 da s\u0131zd\u0131rmazl\u0131k s\u0131z\u0131nt\u0131s\u0131n\u0131n ana nedenidir<\/h3>
Yanl\u0131\u015f montaj nedeniyle mekanik salmastra ka\u00e7a\u011f\u0131<\/h3>
Mekanik salmastran\u0131n yanl\u0131\u015f se\u00e7imi ve tasar\u0131m\u0131 nedeniyle mekanik salmastran\u0131n s\u0131z\u0131nt\u0131s\u0131<\/h3>
\u00c7\u00f6z\u00fcmler<\/h2>
Yay s\u0131k\u0131\u015ft\u0131rma ayar\u0131<\/h3>
Hareketli halka conta halkas\u0131n\u0131n s\u0131k\u0131l\u0131\u011f\u0131<\/h3>
Statik halka conta halkas\u0131n\u0131n s\u0131k\u0131l\u0131\u011f\u0131<\/h3>
Eski ve yeni conta de\u011fi\u015fimi<\/h3>
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bak\u0131m<\/h3>