![\"Al\u00fcminyum](\"https:\/\/aluminiumceramicfiber.com\/wp-content\/uploads\/2021\/07\/Aluminum-Melting-Refining.jpg\")
<\/p>\nAl\u00fcminyumun statik f\u0131r\u0131nda 30 dakika boyunca eritilip ar\u0131t\u0131lmas\u0131n\u0131n ard\u0131ndan, eriyikteki ar\u0131tma i\u015flemi sonucu olu\u015fan kabarc\u0131klar, kabarc\u0131klar\u0131n i\u00e7ine dif\u00fcze olan hidrojeni ta\u015f\u0131r; kabarc\u0131klar\u0131n y\u00fckselme a\u015famas\u0131nda y\u00fczeye yap\u0131\u015fan oksitlenmi\u015f c\u00fcruf ise s\u0131v\u0131 y\u00fczeyinden ta\u015far. Genellikle talep edilen d\u00fc\u015f\u00fck kaliteli \u00fcr\u00fcnler i\u00e7in, eritme s\u00fcrecinde modifiye edici madde eklendi\u011finde, d\u00f6k\u00fcm s\u00fcrecine ge\u00e7ilebilir. Ancak, y\u00fcksek kaliteli \u00fcr\u00fcnler i\u00e7in, eriyi\u011fi daha da safla\u015ft\u0131rmak amac\u0131yla \u00e7evrimi\u00e7i ar\u0131tma ve \u00e7evrimi\u00e7i filtreleme gereklidir. Ayn\u0131 zamanda, modifiye edicinin d\u00f6k\u00fcmden yakla\u015f\u0131k 15 dakika \u00f6nce eklenmesi ve ard\u0131ndan d\u00f6k\u00fcm s\u00fcrecine ge\u00e7ilmesi i\u00e7in \u00e7evrimi\u00e7i modifikasyon y\u00f6nteminin kullan\u0131lmas\u0131 en uygunudur.<\/p>\n
<\/p>\n
Al\u00fcminyum eritme ve ar\u0131tma s\u00fcrecinde, ar\u0131t\u0131c\u0131ya giren erimi\u015f al\u00fcminyumun gaz i\u00e7eri\u011fi 0,18 ml\/(100 g Al) de\u011ferinden az oldu\u011fu s\u00fcrece, kullan\u0131lan ar\u0131tma maddesi saf ve etkili oldu\u011fu ve \u00e7evrimi\u00e7i ar\u0131tma sonras\u0131 erimi\u015f al\u00fcminyumun gaz i\u00e7eri\u011fi 0,10~0,12 ml\/(100 g Al) seviyesinin alt\u0131na d\u00fc\u015febildi\u011fi s\u00fcrece, bu durum y\u00fcksek kaliteli \u00e7ift s\u0131f\u0131r al\u00fcminyum folyo \u00fcretimi i\u00e7in gerekli \u015fartlar\u0131 tam olarak kar\u015f\u0131layabilir.<\/p>\n
Bununla birlikte, d\u00f6k\u00fcmde durum, d\u00f6k\u00fcm ve haddeleme i\u015flemlerinden farkl\u0131d\u0131r. Birincisi, ak\u0131\u015f h\u0131z\u0131n\u0131n y\u00fcksek olmas\u0131d\u0131r. Yumu\u015fak ala\u015f\u0131m\u0131n ak\u0131\u015f h\u0131z\u0131, d\u00f6k\u00fcm ve haddeleme i\u015flemlerine k\u0131yasla 3,8 kat\u0131ndan fazlad\u0131r; sert ala\u015f\u0131m\u0131n ak\u0131\u015f h\u0131z\u0131 da bu i\u015flemlerin 2,5 kat\u0131ndan fazlad\u0131r. Yumu\u015fak ala\u015f\u0131m\u0131n i\u015flem s\u00fcresi sadece 4,7 dakikad\u0131r ve sert ala\u015f\u0131m\u0131nki ise sadece 7,2 dakikad\u0131r. Ar\u0131tma etkisi, d\u00f6k\u00fcm ve haddeleme i\u015flemlerine k\u0131yasla \u00e7ok daha azd\u0131r. \u0130kinci olarak, ala\u015f\u0131m bile\u015fimi karma\u015f\u0131kt\u0131r ve i\u00e7eri\u011fi y\u00fcksektir. Ala\u015f\u0131m eriyik i\u00e7eri\u011fi, saf d\u00f6k\u00fcmden \u00e7ok daha y\u00fcksektir. Al\u00fcminyumun gaz i\u00e7eri\u011fi, normal ko\u015fullar alt\u0131nda, duran f\u0131r\u0131ndaki al\u00fcminyum eriyi\u011fi ar\u0131t\u0131ld\u0131ktan sonra, saf al\u00fcminyumun gaz i\u00e7eri\u011fi 0,14\u20130,16 mL\/(100 g A1) iken, 7075 ala\u015f\u0131m\u0131nda 0,28 mL\/ (100 g Al) de\u011ferindedir. Bu durum, 7075 ala\u015f\u0131m\u0131ndaki gaz i\u00e7eri\u011fini azaltman\u0131n daha zor oldu\u011funu ba\u015fka bir a\u00e7\u0131dan g\u00f6stermektedir.<\/p>\n