![\"Metal](\"https:\/\/aluminiumceramicfiber.com\/wp-content\/uploads\/2021\/05\/Metal-Degassing-System-1.jpg\")
<\/p>\nMetal gaz giderme sistemi, esas olarak erimi\u015f al\u00fcminyumdan hidrojen (H) ve c\u00fcruflar\u0131n uzakla\u015ft\u0131r\u0131lmas\u0131 i\u00e7in kullan\u0131l\u0131r. Sistem, gaz flotasyonu prensibine dayan\u0131r. Rotor, erimi\u015f al\u00fcminyumun i\u00e7ine inert gaz veya klor ile inert gaz kar\u0131\u015f\u0131m\u0131n\u0131 al\u0131r ve gaz\u0131 da\u011f\u0131n\u0131k minik kabarc\u0131klar halinde par\u00e7alar; bu kabarc\u0131klar hidrojen ve kal\u0131nt\u0131lar\u0131 emebilir, ard\u0131ndan kabarc\u0131klar erimi\u015f al\u00fcminyum y\u00fczeyine y\u00fckselir ve bunlar\u0131 uzakla\u015ft\u0131r\u0131r.<\/p>\n
Ergiyen maddedeki hidrojen i\u00e7eri\u011fi y\u00fcksek oldu\u011funda ve gaz giderme i\u015flemi tam olarak tamamlanmad\u0131\u011f\u0131nda, hidrojen gaz\u0131 kabarc\u0131klar halinde bulunur ve metal kat\u0131la\u015ft\u0131ktan sonra da i\u00e7inde kalarak metalde k\u00fcresel bo\u015fluklar, yani g\u00f6zenekler olu\u015fturur. Stomalar\u0131n yap\u0131s\u0131 yuvarlak deliklerle karakterize edilir ve i\u00e7 y\u00fczeyi p\u00fcr\u00fczs\u00fcz ve parlakt\u0131r.<\/p>\n
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Stomalar\u0131n olu\u015fumunu etkileyen ba\u015fl\u0131ca fakt\u00f6rler<\/strong><\/p>\n (1) Eriyi\u011fin ba\u015flang\u0131\u00e7taki gaz i\u00e7eri\u011fi. Eriyi\u011fin ba\u015flang\u0131\u00e7taki gaz i\u00e7eri\u011fi ne kadar fazla olursa, s\u0131cakl\u0131k d\u00fc\u015f\u00fcr\u00fcld\u00fc\u011f\u00fcnde o kadar fazla gaz \u00e7\u00f6kelir; kristalle\u015fme aray\u00fcz\u00fcndeki s\u0131v\u0131 faz\u0131n a\u015f\u0131r\u0131 doygunluk konsantrasyonu ne kadar y\u00fcksek olursa, kabarc\u0131k olu\u015fumu i\u00e7in a\u015f\u0131r\u0131 doygunluk b\u00f6lgesi o kadar geni\u015f olur; s\u00fcre ne kadar uzun olursa, g\u00f6zenek olu\u015fumu o kadar fazla te\u015fvik edilir.<\/p>\n (2) So\u011fuma h\u0131z\u0131. K\u00fct\u00fc\u011f\u00fcn so\u011fuma h\u0131z\u0131 ne kadar y\u00fcksek olursa, gaz dif\u00fczyonu o kadar azal\u0131r ve \u00e7\u00f6kelme o kadar ge\u00e7 ger\u00e7ekle\u015fir; b\u00f6ylece g\u00f6zenek olu\u015fturmayan gaz\u0131n a\u015f\u0131r\u0131 doygunlu\u011fu artmas\u0131na izin verilir ve bu da kabarc\u0131klar\u0131n olu\u015ftu\u011fu a\u015f\u0131r\u0131 doygunluk alan\u0131n\u0131n daralmas\u0131na yol a\u00e7ar. Ayn\u0131 zamanda, so\u011fuma h\u0131z\u0131 ne kadar y\u00fcksek olursa, ge\u00e7i\u015f b\u00f6lgesi o kadar daral\u0131r ve dendritlerin s\u0131v\u0131 faz\u0131 kapatma olas\u0131l\u0131\u011f\u0131 azal\u0131r; bu da g\u00f6zenek olu\u015fma e\u011filimini azalt\u0131r.<\/p>\n (3) Ala\u015f\u0131m bile\u015fimi. G\u00f6zenek olu\u015fumu, esas olarak ala\u015f\u0131m bile\u015fiminden etkilenir; bu bile\u015fim, ba\u015flang\u0131\u00e7taki hidrojen i\u00e7eri\u011fini, ala\u015f\u0131mdaki hidrojenin dif\u00fczyon katsay\u0131s\u0131n\u0131, da\u011f\u0131l\u0131m katsay\u0131s\u0131n\u0131 ve kristalle\u015fme b\u00f6lgesinin boyutunu etkiler.<\/p>\n (4) K\u00fct\u00fck d\u00f6k\u00fcm i\u015flem ko\u015fullar\u0131. Kristalle\u015fme y\u00f6ntemini ve ge\u00e7i\u015f b\u00f6lgesinin boyutunu de\u011fi\u015ftirerek, esas olarak g\u00f6zeneklerin olu\u015fumunu ve da\u011f\u0131l\u0131m\u0131n\u0131 etkiler<\/p>\n (5) Metal olmayan kal\u0131nt\u0131lar\u0131n i\u00e7eri\u011fi. Metal olmayan kal\u0131nt\u0131lar\u0131n i\u00e7eri\u011fi ne kadar d\u00fc\u015f\u00fckse, g\u00f6zeneklerin olu\u015fmas\u0131na izin veren kritik hidrojen i\u00e7eri\u011fi o kadar y\u00fcksek olur.<\/p>\n K\u00fcl\u00e7ede g\u00f6zenek olu\u015fumunu \u00f6nlemeye y\u00f6nelik \u00f6nlemler \u015funlard\u0131r:<\/strong><\/p>\n