{"id":1056,"date":"2023-08-23T10:49:47","date_gmt":"2023-08-23T10:49:47","guid":{"rendered":"https:\/\/yeni.alpsteel.com.tr\/?page_id=1056"},"modified":"2023-08-23T11:52:21","modified_gmt":"2023-08-23T11:52:21","slug":"islah-celikleri","status":"publish","type":"page","link":"https:\/\/www.alpsteel.com.tr\/en\/islah-celikleri\/","title":{"rendered":"Islah \u00c7elikleri"},"content":{"rendered":"
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Islah \u00e7elikleri, kimyasal bile\u015fimleri \u00f6zellikle karbon miktar\u0131 bak\u0131m\u0131ndan, sertle\u015ftirmeye elveri\u015fli olan ve \u0131slah i\u015flemi sonunda belirli bir \u00e7ekme dayan\u0131m\u0131nda y\u00fcksek tokluk \u00f6zelli\u011fi g\u00f6steren, ala\u015f\u0131ms\u0131z ve ala\u015f\u0131ml\u0131 makine imalat \u00e7elikleridir.<\/p>

Islah \u00e7eliklerinde sertle\u015febilirlik \u00f6zelliklerinin yan\u0131nda, y\u00fcksek dayan\u0131m ve s\u00fcneklik de istenir. Yeterli seviyede sertlik elde edilebilmesi i\u00e7in, \u0131slah \u00e7elikleri di\u011ferlerine nispeten y\u00fcksek karbon i\u00e7erirler. Kal\u0131n kesitli par\u00e7alar i\u00e7in sertlik derinli\u011finin en \u00f6nemli kriter olmas\u0131 sebebiyle, bu par\u00e7alar ala\u015f\u0131ml\u0131 \u0131slah \u00e7eliklerinden imal edilirler.<\/p>

Islah \u00e7eliklerinin se\u00e7iminde, par\u00e7a boyutlar\u0131 ve dayan\u0131m de\u011ferleri \u00f6n plandad\u0131r. Ala\u015f\u0131ms\u0131z \u0131slah \u00e7elikleri ancak k\u00fc\u00e7\u00fck kesitli par\u00e7alarda verimli olabilir. Kal\u0131n kesitli par\u00e7alar i\u00e7in, sertlik da\u011f\u0131l\u0131m\u0131n\u0131n homojen olmas\u0131, \u00e7eli\u011fin ala\u015f\u0131ml\u0131 olmas\u0131na ba\u011fl\u0131d\u0131r. Sertlik da\u011f\u0131l\u0131m\u0131n\u0131n, malzeme ala\u015f\u0131mlar\u0131na g\u00f6re de\u011fi\u015fimleri jominy testi sonu\u00e7lar\u0131 ile g\u00f6zlenebilir. Jominy testi basit bir ifadeyle ; sertle\u015ftirme s\u0131cakl\u0131\u011f\u0131na kadar \u0131s\u0131t\u0131lan \u00e7ubuk \u015feklinde bir malzemenin sadece bir ucundan so\u011futulmas\u0131yla so\u011futulan uca olan mesafelerdeki sertle\u015fme de\u011ferlerini ifade eder.<\/p>

Islah \u00e7elikleri alevle ve ind\u00fcksiyonla sertle\u015ftirilebilece\u011fi gibi, \u0131slah edildikten sonra da alev ve ind\u00fcksiyonla sertle\u015ftirilebilirler. Bu \u015fekilde \u0131s\u0131l i\u015flem g\u00f6recek malzemenin se\u00e7iminde, kimyasal bile\u015fimin yan\u0131 s\u0131ra, y\u00fczeyde elde edilecek sertlik de\u011feri ve sertle\u015fme derinli\u011fi g\u00f6z \u00f6n\u00fcnde bulundurulur. Ala\u015f\u0131ms\u0131z \u00e7eliklerde sertlik derinli\u011fi 3-4 mm olabilirken. Ala\u015f\u0131ml\u0131 \u00e7eliklerde bu derinlik 10-12 mm\u2019yi bulur. Ayr\u0131ca ind\u00fcksiyonla sertle\u015ftirme esnas\u0131nda y\u00fcksek mangan \u00e7atlama tehlikesi yarataca\u011f\u0131ndan, y\u00fcksek karbon-d\u00fc\u015f\u00fck manganl\u0131 Cf kalite \u00e7eliklerin kullan\u0131lmas\u0131 daha uygundur. Ayr\u0131ca \u00e7atlama tehlikesinin azalmas\u0131, malzeme tane yap\u0131s\u0131n\u0131n k\u00fc\u00e7\u00fck olmas\u0131yla yak\u0131ndan ili\u015fkilidir.<\/p>

Islah i\u015flemi, sonu\u00e7ta \u00e7elik par\u00e7aya y\u00fcksek tokluk \u00f6zelli\u011finin kazand\u0131r\u0131laca\u011f\u0131, \u00f6nce bir sertle\u015ftirme ve arkas\u0131ndan menevi\u015fleme i\u015flemlerinin b\u00fct\u00fcn\u00fc olarak tarif edilir. Islah \u00e7elikleri, \u0131slah i\u015flemi sonunda kazand\u0131klar\u0131 \u00fcst\u00fcn mekanik \u00f6zelliklerinden dolay\u0131, \u00e7e\u015fitli makine ve motor par\u00e7alar\u0131, d\u00f6vme par\u00e7alar, \u00e7e\u015fitli c\u0131vata, somun ve saplamalar, krank milleri, akslar, kumada ve tahrik par\u00e7alar\u0131, piston kollar\u0131, \u00e7e\u015fitli miller, di\u015fler gibi par\u00e7alar\u0131n imalinde olmak \u00fczere geni\u015f bir ilanda kullan\u0131l\u0131rlar. Bu sebepten, \u0131slah \u00e7elikleri in\u015faat ve ala\u015f\u0131ms\u0131z \u00e7eliklerden sonra, en y\u00fcksek oranda \u00fcretilen ve kullan\u0131lan \u00e7elik t\u00fcr\u00fcd\u00fcr.<\/p>

Islah \u00e7elikleri kimyasal bile\u015fimlerine g\u00f6re 4 ana grupta toplan\u0131r.<\/strong><\/p>

  1. \u00a0Ala\u015f\u0131ms\u0131z \u0131slah \u00e7elikleri<\/li>
  2. \u00a0Mangan ala\u015f\u0131ml\u0131 \u0131slah \u00e7elikleri<\/li>
  3. \u00a0Krom ala\u015f\u0131ml\u0131 \u0131slah \u00e7elikleri<\/li>
  4. \u00a0Krom-molibden ala\u015f\u0131ml\u0131 \u0131slah \u00e7elikleri<\/li><\/ol>

    Ala\u015f\u0131ms\u0131z \u00e7eliklerde, \u0131slah dayan\u0131m\u0131 karbon miktar\u0131yla artmaktad\u0131r. 16 mm \u00e7apa kadar en d\u00fc\u015f\u00fck akma s\u0131n\u0131r\u0131 370 N\/mm^2 (%C:0,25) ile 570 N\/mm^2 (%C:0,50) aras\u0131ndad\u0131r. 16-40 mm \u00e7ap aras\u0131ndaki boyutlarda 50-80 N\/mm^2 daha d\u00fc\u015f\u00fck olur.<\/p>

    Mangan ala\u015f\u0131ml\u0131 \u0131slah \u00e7eliklerde mangan sertle\u015febilirli\u011fi art\u0131rd\u0131\u011f\u0131ndan 30Mn4 ve 40Mn4 \u00e7eliklerinde akma s\u0131n\u0131r\u0131 C60 \u00e7eli\u011findeki \u00f6zelliklerini g\u00f6sterir.<\/p>

    Krom ala\u015f\u0131ml\u0131 \u0131slah \u00e7eliklerinde krom elementi sertle\u015febilirli\u011fi olduk\u00e7a fazla art\u0131r\u0131r ve plastisiteye de olumlu etki yapar. \u00d6rne\u011fin 40Cr4 \u00e7eli\u011finde 16-400 mm \u00e7ap aral\u0131\u011f\u0131nda minimum akma 700 N\/mm^2\u2019dir.<\/p>

    Molibden kroma nazaran daha kuvvetli sertle\u015febilme kabiliyetini art\u0131r\u0131r. Ayr\u0131ca menevi\u015f dayan\u0131m\u0131n\u0131 art\u0131r\u0131r ve menevi\u015f k\u0131r\u0131lganl\u0131\u011f\u0131 ihtimalini azalt\u0131r.<\/p>

    Islah i\u015flemi, sertle\u015ftirme ve bunu takip eden menevi\u015fleme i\u015flemi olarak tarif edilmi\u015ftir. A\u015fa\u011f\u0131da, \u00e7elikler i\u00e7in, sertle\u015ftirme ve menevi\u015fleme i\u015flemleri genel olarak ayr\u0131 a\u00e7\u0131klanm\u0131\u015ft\u0131r.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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    \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Islah\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

    Islah \u00e7elikleri, kimyasal bile\u015fimleri \u00f6zellikle karbon miktar\u0131 bak\u0131m\u0131ndan, sertle\u015ftirmeye elveri\u015fli olan ve \u0131slah i\u015flemi sonunda belirli bir \u00e7ekme dayan\u0131m\u0131nda y\u00fcksek tokluk \u00f6zelli\u011fi g\u00f6steren, ala\u015f\u0131ms\u0131z ve ala\u015f\u0131ml\u0131 makine imalat \u00e7elikleridir. Islah \u00e7eliklerinde sertle\u015febilirlik \u00f6zelliklerinin yan\u0131nda, y\u00fcksek dayan\u0131m ve s\u00fcneklik de istenir. Yeterli seviyede sertlik elde edilebilmesi i\u00e7in, \u0131slah \u00e7elikleri di\u011ferlerine nispeten y\u00fcksek karbon i\u00e7erirler. Kal\u0131n kesitli …<\/p>\n

    Islah \u00c7elikleri<\/span> Read More »<\/a><\/p>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","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":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","footnotes":""},"class_list":["post-1056","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.alpsteel.com.tr\/en\/wp-json\/wp\/v2\/pages\/1056","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.alpsteel.com.tr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.alpsteel.com.tr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.alpsteel.com.tr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alpsteel.com.tr\/en\/wp-json\/wp\/v2\/comments?post=1056"}],"version-history":[{"count":4,"href":"https:\/\/www.alpsteel.com.tr\/en\/wp-json\/wp\/v2\/pages\/1056\/revisions"}],"predecessor-version":[{"id":1130,"href":"https:\/\/www.alpsteel.com.tr\/en\/wp-json\/wp\/v2\/pages\/1056\/revisions\/1130"}],"wp:attachment":[{"href":"https:\/\/www.alpsteel.com.tr\/en\/wp-json\/wp\/v2\/media?parent=1056"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}