![\"Erimi\u015f](\"https:\/\/aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/09\/Molten-Aluminum-on-Cleanliness-1.jpg\")
<\/p>\nErimi\u015f al\u00fcminyumun safl\u0131\u011f\u0131, yani al\u00fcminyum eriyikindeki kal\u0131nt\u0131lar\u0131n azalt\u0131lmas\u0131, y\u00fcksek kaliteli \u00fcr\u00fcnlerin \u00fcretiminde \u00e7ok \u00f6nemli bir fakt\u00f6rd\u00fcr. Al\u00fcminyum ala\u015f\u0131m\u0131ndaki kal\u0131nt\u0131lar, ala\u015f\u0131m yap\u0131s\u0131n\u0131 s\u00fcreksiz hale getirir, \u00fcr\u00fcn\u00fcn s\u0131k\u0131l\u0131\u011f\u0131n\u0131 azalt\u0131r, korozyona ve \u00e7atlaklara neden olur ve nihai \u00fcr\u00fcn\u00fcn mekanik \u00f6zelliklerini d\u00fc\u015f\u00fcr\u00fcr.<\/p>\n
Nihai \u00fcr\u00fcn\u00fcn kullan\u0131m amac\u0131na ba\u011fl\u0131 olarak, erimi\u015f al\u00fcminyumun temizlik seviyesi farkl\u0131l\u0131k g\u00f6sterir. Nihai \u00fcr\u00fcn\u00fcn ne kadar ince olmas\u0131 gerekiyorsa (teneke kutular, \u0131s\u0131 emiciler vb.) veya y\u00fcksek hassasiyetli \u015ferit folyonun (PS levha taban\u0131, ayna dekoratif levha vb.) y\u00fczey kalitesi gereksinimleri ne kadar y\u00fcksekse, eriyik temizli\u011fi i\u00e7in gereksinimler de o kadar y\u00fcksek olur. Yeniden eritme i\u015flemi s\u0131ras\u0131nda, f\u0131r\u0131n y\u00fck\u00fcne ba\u011fl\u0131 olarak, hurda, kesim art\u0131klar\u0131 ve sac malzeme gibi klinker ciddi \u015fekilde oksitlenir ve bir\u00e7ok \u00e7e\u015fit metalik olmayan kal\u0131nt\u0131 i\u00e7erir. En yayg\u0131n olanlar\u0131 al\u00fcmina tozu, oksit filmi, bor\u00fcrler, magnezyum oksit ve magnezyum klor\u00fcr gibi metal olmayan oksitlerdir. Belirtilen i\u00e7eri\u011fi a\u015fan kal\u0131nt\u0131lar, al\u00fcminyum ala\u015f\u0131m\u0131n\u0131n s\u00fcreklili\u011finin bozulmas\u0131, g\u00f6zenek olu\u015fumu veya \u015feridin kopmas\u0131 gibi \u00e7e\u015fitli sorunlara neden olabilir. Al\u00fcminyum \u015feritler PS levha taban\u0131 olarak kullan\u0131ld\u0131\u011f\u0131nda, haddeleme s\u0131ras\u0131nda deforme olurlar ve bu kal\u0131nt\u0131lar nihai \u00fcr\u00fcn\u00fcn y\u00fczeyinde yayg\u0131n kabarc\u0131klar olu\u015fturur. Ayr\u0131ca, baz\u0131 \u00e7ok sert kat\u0131 kal\u0131nt\u0131lar (\u00f6rne\u011fin refrakter par\u00e7ac\u0131klar\u0131) haddeleme makinesi silindirinin y\u00fczeyine zarar verebilir, \u015ferit \u00fczerinde tekrarlanan izler b\u0131rakabilir ve \u00e7atlaklar\u0131n kayna\u011f\u0131 haline gelebilir.<\/p>\n
Al\u00fcminyum eriyikindeki hidrojen, esas olarak al\u00fcminyum ile f\u0131r\u0131n gaz\u0131ndaki su aras\u0131ndaki yo\u011fun kimyasal reaksiyondan kaynaklan\u0131r; bir k\u0131sm\u0131 ise f\u0131r\u0131n gaz\u0131ndaki veya havadaki hidrojenden gelir. Hidrojenin al\u00fcminyum eriyikindeki y\u00fcksek adsorpsiyon \u00e7\u00f6z\u00fcn\u00fcrl\u00fc\u011f\u00fc nedeniyle, bu durum al\u00fcminyum eriyiklerinin hidrojeni emmesinin ba\u015fl\u0131ca yoludur. Ayr\u0131ca, al\u00fcminyum k\u00fcl\u00e7eler a\u00e7\u0131k havada depoland\u0131\u011f\u0131nda, havadaki su buhar\u0131yla kolayca temas ederek nemi emerler; bu da al\u00fcminyum eriyikindeki hava i\u00e7eri\u011finin artmas\u0131n\u0131n \u00f6nemli bir nedenidir. Slab d\u00f6k\u00fcm\u00fc yap\u0131l\u0131rken, ortam\u0131n su i\u00e7eri\u011fine ve d\u00f6k\u00fcm s\u0131cakl\u0131\u011f\u0131na dikkat edilmelidir. \u00c7\u00f6zeltinin s\u0131cakl\u0131\u011f\u0131 ne kadar y\u00fcksekse, erimi\u015f al\u00fcminyumdaki hidrojenin \u00e7\u00f6z\u00fcn\u00fcrl\u00fc\u011f\u00fc o kadar artar ve k\u00fcl\u00e7enin hidrojen i\u00e7ermesi ka\u00e7\u0131n\u0131lmazd\u0131r.<\/p>\n
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