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<\/p>\nS\u0131cak \u00fcst d\u00f6k\u00fcm y\u00f6ntemiyle \u00fcretilen al\u00fcminyum k\u00fcl\u00e7e, homojen bir yap\u0131ya ve iyi mekanik \u00f6zelliklere sahiptir. Bu t\u00fcr bir d\u00f6k\u00fcm yap\u0131s\u0131 elde etmek amac\u0131yla, yuvarlak k\u00fcl\u00e7e d\u00f6k\u00fcm\u00fcnde al\u00fcminyum k\u00fcl\u00e7e s\u0131cak \u00fcst d\u00f6k\u00fcm y\u00f6ntemi kullan\u0131l\u0131r.<\/p>\n
Al\u00fcminyum ala\u015f\u0131ml\u0131 k\u00fcl\u00e7elerin kalitesi, sonraki i\u015fleme a\u015famalar\u0131 ve al\u00fcminyum \u00fcr\u00fcnlerinin kalitesi \u00fczerinde \u00f6nemli bir etkiye sahiptir. K\u00fcl\u00e7elerde s\u0131k\u00e7a g\u00f6r\u00fclen kusurlar aras\u0131nda \u00e7atlaklar, g\u00f6zenekler, g\u00f6zeneklilik, c\u00fcruf kal\u0131nt\u0131lar\u0131, segregasyon, so\u011fuk ayr\u0131\u015fma vb. yer al\u0131r. Ger\u00e7ek \u00fcretimde bu kusurlar\u0131n ortaya \u00e7\u0131kmas\u0131n\u0131n bir\u00e7ok nedeni vard\u0131r; bunlar aras\u0131nda d\u00f6k\u00fcm kal\u0131b\u0131n\u0131n yap\u0131s\u0131 ve ala\u015f\u0131m\u0131n \u00f6zellikleri, eriyik ar\u0131tma ve tane inceltme derecesi, d\u00f6k\u00fcm i\u015flemi parametreleri vb. say\u0131labilir.<\/p>\n
K\u00fcl\u00e7e kalitesi, k\u00fcl\u00e7enin yap\u0131s\u0131 ve y\u00fczey kalitesini i\u00e7erir. G\u00fcn\u00fcm\u00fczde, k\u00fcl\u00e7e kesitindeki homojen ince taneli yap\u0131n\u0131n, k\u00fcl\u00e7e i\u00e7in en uygun yap\u0131 oldu\u011fu konusunda fikir birli\u011fi vard\u0131r. Bu t\u00fcr bir d\u00f6k\u00fcm yap\u0131s\u0131 elde etmek amac\u0131yla, yuvarlak k\u00fcl\u00e7e d\u00f6k\u00fcm\u00fcnde s\u0131cak \u00fcst d\u00f6k\u00fcm y\u00f6ntemi uygulanmaktad\u0131r.<\/p>\n
<\/p>\n
K\u00fcl\u00e7e S\u0131cak \u00dcst D\u00f6k\u00fcm\u00fcn\u00fcn Avantajlar\u0131<\/p>\n
(1) S\u0131cak \u00fcst d\u00f6k\u00fcm y\u00f6ntemiyle \u00fcretilen k\u00fcl\u00e7e, homojen bir yap\u0131ya ve iyi mekanik \u00f6zelliklere sahiptir. Bunun nedeni, s\u0131cak \u00fcst kal\u0131b\u0131n etkili kristalle\u015fme y\u00fcksekli\u011finin \u00e7ok k\u00fc\u00e7\u00fck olmas\u0131, k\u00fcl\u00e7enin so\u011fuma h\u0131z\u0131n\u0131n artmas\u0131, k\u00fcl\u00e7enin s\u0131v\u0131 bo\u015flu\u011funun daha s\u0131\u011f hale gelmesi ve ge\u00e7i\u015f b\u00f6lgesinin daralmas\u0131d\u0131r; dolay\u0131s\u0131yla k\u00fcl\u00e7enin s\u0131k\u0131l\u0131\u011f\u0131 artar.<\/p>\n