{"id":1605,"date":"2019-05-22T02:47:32","date_gmt":"2019-05-22T02:47:32","guid":{"rendered":"http:\/\/www.meetyoucarbide.com\/single-post-what-is-the-difference-between-forging-and-rolling\/"},"modified":"2020-05-04T13:12:08","modified_gmt":"2020-05-04T13:12:08","slug":"what-is-the-difference-between-forging-and-rolling","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/tr\/dovme-ve-haddeleme-arasindaki-fark-nedir\/","title":{"rendered":"D\u00f6vme ve haddeleme aras\u0131ndaki fark nedir?"},"content":{"rendered":"<div class=\"vgblk-rw-wrapper limit-wrapper\">\n<div>\n<h2>Yuvarlanmak nedir?<\/h2>\n<div>Haddeleme, bir \u00e7ift d\u00f6nen merdanenin bo\u015flu\u011fundan (\u00e7e\u015fitli \u015fekillerde) bo\u015f metalin ge\u00e7ti\u011fi ve merdanelerin s\u0131k\u0131\u015ft\u0131r\u0131lmas\u0131yla malzeme kesitinin k\u00fc\u00e7\u00fclt\u00fcld\u00fc\u011f\u00fc ve uzunlu\u011funun artt\u0131r\u0131ld\u0131\u011f\u0131 bir i\u015fleme y\u00f6ntemidir. \u00c7elik \u00fcretimi i\u00e7in en yayg\u0131n \u00fcretim y\u00f6ntemidir ve esas olarak \u00fcretim i\u00e7in kullan\u0131l\u0131r. Profiller, plakalar, borular.<\/div>\n<p><img decoding=\"async\" src=\"https:\/\/www.meetyoucarbide.com\/wp-content\/uploads\/2019\/05\/f875f9_2e8b510178ca44c48a2c3cd2728f6717mv2-1.png\" alt=\"\" title=\"\"><\/p>\n<h2>Haddelemenin Avantajlar\u0131<\/h2>\n<div>K\u00fcl\u00e7enin d\u00f6k\u00fcm yap\u0131s\u0131 onun taraf\u0131ndan yok edilebilir. Ayr\u0131ca, \u00e7eli\u011fin tanecikleri rafine edilebilir ve mikro yap\u0131daki kusurlar ortadan kald\u0131r\u0131labilir. b\u00f6ylece \u00e7elik yap\u0131 s\u0131k\u0131\u015ft\u0131r\u0131l\u0131r ve mekanik \u00f6zellikler iyile\u015ftirilir. Bu geli\u015fme esas olarak haddeleme y\u00f6n\u00fcnde yans\u0131t\u0131l\u0131r, b\u00f6ylece \u00e7elik art\u0131k belirli bir dereceye kadar izotropik de\u011fildir,kabarc\u0131klar, \u00e7atlaklar. D\u00f6k\u00fcm s\u0131ras\u0131nda olu\u015fan gev\u015feklik, y\u00fcksek s\u0131cakl\u0131k ve bas\u0131n\u00e7 alt\u0131nda da kaynaklanabilir.<\/div>\n<div>Yuvarlanman\u0131n dezavantajlar\u0131<\/div>\n<div>1. Haddelemeden sonra, \u00e7eli\u011fin i\u00e7indeki metalik olmayan inkl\u00fczyonlar (esas olarak s\u00fclf\u00fcrler ve oksitler ve ayr\u0131ca silikatlar) ince tabakalar halinde preslenir ve delaminasyona (sandvi\u00e7) neden olur. Delaminasyon, \u00e7eli\u011fin \u00e7ekme \u00f6zelliklerini kal\u0131nl\u0131k y\u00f6n\u00fcnde b\u00fcy\u00fck \u00f6l\u00e7\u00fcde bozar ve kaynak b\u00fcz\u00fcld\u00fc\u011f\u00fcnde tabakalar aras\u0131 y\u0131rt\u0131lma meydana gelmesi m\u00fcmk\u00fcnd\u00fcr. Kaynak b\u00fcz\u00fclmesinin neden oldu\u011fu yerel gerilme, genellikle akma noktas\u0131 gerilmesinin birka\u00e7 kat\u0131na ula\u015f\u0131r ve y\u00fck\u00fcn neden oldu\u011fu gerilmeden \u00e7ok daha b\u00fcy\u00fckt\u00fcr.<\/div>\n<div>2. D\u00fczensiz so\u011futman\u0131n neden oldu\u011fu art\u0131k gerilim. Art\u0131k gerilim, d\u0131\u015f kuvvet olmadan i\u00e7 kendi fazl\u0131 denge gerilimidir. \u00c7e\u015fitli b\u00f6l\u00fcmlerin s\u0131cak haddelenmi\u015f \u00e7eli\u011fi b\u00f6yle bir art\u0131k gerilime sahiptir. Genel \u00e7eli\u011fin kesit boyutu ne kadar b\u00fcy\u00fck olursa, art\u0131k gerilme o kadar b\u00fcy\u00fck olur. Art\u0131k gerilme kendi kendine faz dengeli olsa da, \u00e7elik elemanlar\u0131n d\u0131\u015f kuvvet alt\u0131ndaki performans\u0131 \u00fczerinde hala bir miktar etkisi vard\u0131r. Deformasyon, stabilite, yorulma ve di\u011fer y\u00f6nlerin olumsuz etkileri olabilir.<\/div>\n<div>3. S\u0131cak haddelenmi\u015f \u00e7elik \u00fcr\u00fcnler, kal\u0131nl\u0131k ve kenar geni\u015fli\u011fi a\u00e7\u0131s\u0131ndan iyi kontrol edilmemektedir. Termal genle\u015fme ve b\u00fcz\u00fclmeye a\u015finay\u0131z. En ba\u015fta s\u0131cak haddeleme ba\u015flad\u0131\u011f\u0131 i\u00e7in boy ve kal\u0131nl\u0131k standartlarda olsa bile so\u011fuma sonras\u0131 belli bir negatif fark olacakt\u0131r. Negatif fark\u0131n geni\u015fli\u011fi ne kadar geni\u015f olursa, kal\u0131nl\u0131k o kadar kal\u0131n olur. Bu nedenle, b\u00fcy\u00fck \u00e7elik i\u00e7in, \u00e7eli\u011fin kenar geni\u015fli\u011fi, kal\u0131nl\u0131\u011f\u0131, uzunlu\u011fu, a\u00e7\u0131s\u0131 ve kenar\u0131 \u00e7ok hassas olamaz.<\/div>\n<h2>d\u00f6vme nedir?<\/h2>\n<div>Belirli bir mekanik \u00f6zelli\u011fe, belirli bir \u015fekle ve boyuta sahip bir d\u00f6vme elde etmek i\u00e7in bir metal bo\u015flu\u011fu plastik olarak deforme etmek i\u00e7in bir metal bo\u015flu\u011fa bas\u0131n\u00e7 uygulamak i\u00e7in bir d\u00f6vme makinesi kullanarak d\u00f6vmenin (d\u00f6vme ve damgalama) iki ana bile\u015feninden biridir. D\u00f6vme yoluyla, eritme i\u015fleminde metalin neden oldu\u011fu d\u00f6k\u00fcm gev\u015fekli\u011fi gibi kusurlar\u0131 ortadan kald\u0131rabilir, mikro yap\u0131y\u0131 optimize edebilir ve ayn\u0131 zamanda, d\u00f6vmelerin mekanik \u00f6zellikleri, korunmas\u0131 nedeniyle genellikle ayn\u0131 malzemelerden daha iyidir. komple metal ak\u0131\u015f hatlar\u0131. \u0130lgili makinelerin y\u00fcksek y\u00fck ve a\u011f\u0131r \u00e7al\u0131\u015fma ko\u015fullar\u0131na sahip \u00f6nemli par\u00e7alar\u0131 i\u00e7in, mevcut haddelenmi\u015f saclar, profiller veya kaynakl\u0131 par\u00e7alar d\u0131\u015f\u0131nda d\u00f6vmeler s\u0131kl\u0131kla kullan\u0131lmaktad\u0131r.<\/div>\n<div>D\u00f6vme \u00f6zellikleri:<\/div>\n<div>D\u00f6k\u00fcmlerle kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda, d\u00f6vme metalleri, d\u00f6vme i\u015fleminden sonra mikro yap\u0131lar\u0131n\u0131 ve mekanik \u00f6zelliklerini iyile\u015ftirebilir. D\u00f6k\u00fcm yap\u0131n\u0131n d\u00f6vme y\u00f6ntemiyle s\u0131cak \u015fekillendirilmi\u015f deformasyonundan sonra, orijinal kaba dendritler ve s\u00fctunlu taneler, metalin deformasyonu ve yeniden kristalle\u015fmesi nedeniyle ince taneler ve d\u00fczg\u00fcn boyut ile e\u015f eksenli yeniden kristalize yap\u0131 haline gelir, b\u00f6ylece orijinal segregasyon \u00e7elik k\u00fcl\u00e7e, Gev\u015fek, stoma ve c\u00fcruf kal\u0131nt\u0131lar\u0131n\u0131n s\u0131k\u0131\u015ft\u0131r\u0131lmas\u0131 ve kaynaklanmas\u0131, yap\u0131y\u0131 daha kompakt hale getirir ve metalin plastisitesini ve mekanik \u00f6zelliklerini iyile\u015ftirir.<\/div>\n<div>D\u00f6k\u00fcmlerin mekanik \u00f6zellikleri, ayn\u0131 malzemeden yap\u0131lan d\u00f6vmelere g\u00f6re daha d\u00fc\u015f\u00fckt\u00fcr. Ek olarak, d\u00f6vme i\u015flemi, metal elyaf yap\u0131s\u0131n\u0131n s\u00fcreklili\u011fini sa\u011flayabilir, b\u00f6ylece d\u00f6vme par\u00e7as\u0131n\u0131n elyaf yap\u0131s\u0131, d\u00f6vme par\u00e7as\u0131n\u0131n \u015fekli ile tutarl\u0131 olur ve iyi mekanik \u00f6zellikleri sa\u011flayabilen metal d\u00fczene\u011fi tamamlan\u0131r ve hassas kal\u0131p d\u00f6vme ve so\u011fuk ekstr\u00fczyon ile par\u00e7an\u0131n uzun hizmet \u00f6mr\u00fc. S\u0131cak ekstr\u00fczyon gibi i\u015flemlerle \u00fcretilen d\u00f6vme par\u00e7alar, d\u00f6k\u00fcmlerle k\u0131yaslanamaz.<\/div>\n<h2>D\u00f6vme ve haddeleme i\u015f par\u00e7as\u0131n\u0131n kar\u015f\u0131la\u015ft\u0131r\u0131lmas\u0131:<\/h2>\n<div>a. D\u00f6vme par\u00e7alar\u0131n eksenel ve radyal mekanik \u00f6zellikleri aras\u0131ndaki fark, haddelenmi\u015f par\u00e7alara g\u00f6re daha k\u00fc\u00e7\u00fckt\u00fcr. Yani d\u00f6vme par\u00e7alar\u0131n izotropisi, haddelenmi\u015f par\u00e7alar\u0131n izotropisinden \u00e7ok daha y\u00fcksektir, bu nedenle d\u00f6vme par\u00e7alar\u0131n \u00f6mr\u00fc, haddelenmi\u015f par\u00e7alara g\u00f6re \u00e7ok daha y\u00fcksektir. Haddelenmi\u015f par\u00e7alar. A\u015fa\u011f\u0131daki \u015fekil, Cr12MoV haddelenmi\u015f sac\u0131n farkl\u0131 y\u00f6nlerinde \u00f6tektik karb\u00fcrlerin morfolojisinin metalografik diyagram\u0131n\u0131 g\u00f6stermektedir.<\/div>\n<div>b. Deformasyon derecesine g\u00f6re, d\u00f6vmenin deformasyon derecesi haddelenmi\u015f par\u00e7an\u0131n deformasyon derecesinden \u00e7ok daha b\u00fcy\u00fckt\u00fcr, yani \u00f6tektik karb\u00fcr\u00fcn d\u00f6vme yoluyla k\u0131r\u0131lmas\u0131n\u0131n etkisi, haddelemenin ezme etkisinden daha iyidir.<\/div>\n<div>c. \u0130\u015fleme maliyeti a\u00e7\u0131s\u0131ndan, d\u00f6vme maliyeti haddeleme maliyetinden \u00e7ok daha y\u00fcksektir. Baz\u0131 \u00f6nemli par\u00e7alar, b\u00fcy\u00fck y\u00fcklere veya darbelere maruz kalan i\u015f par\u00e7alar\u0131, karma\u015f\u0131k \u015fekillere sahip i\u015f par\u00e7alar\u0131 veya \u00e7ok kat\u0131 gereksinimler i\u00e7in i\u015fleme i\u00e7in d\u00f6vme \u0130\u015flemi kullanmak gerekir.<\/div>\n<div>d. D\u00f6vme, tam bir metal d\u00fczene sahiptir. Yuvarland\u0131ktan sonra mekanik, i\u015f par\u00e7as\u0131n\u0131n \u00f6mr\u00fcn\u00fc b\u00fcy\u00fck \u00f6l\u00e7\u00fcde k\u0131saltan metal d\u00fczene\u011fin b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc bozar. A\u015fa\u011f\u0131daki \u015fekil, d\u00f6k\u00fcm, i\u015fleme ve d\u00f6vme i\u015f par\u00e7alar\u0131 i\u00e7in metal ak\u0131\u015f hatlar\u0131n\u0131 g\u00f6stermektedir.<\/div>\n<\/div>\n<\/div>\n<p><!-- .vgblk-rw-wrapper --><\/p>","protected":false},"excerpt":{"rendered":"<p>What is rolling? Rolling is a processing method in which the metal blank passes through the gap (various shapes) of a pair of rotating rolls, and the material cross section is reduced and the length is increased by the compression of the rolls. It is the most common production method for producing steel, and is&#8230;<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[79],"tags":[],"class_list":["post-1605","post","type-post","status-publish","format-standard","hentry","category-materials-weekly"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/posts\/1605","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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/comments?post=1605"}],"version-history":[{"count":0,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/posts\/1605\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/media?parent=1605"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/categories?post=1605"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/tags?post=1605"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}