{"id":4760,"date":"2019-04-22T06:10:32","date_gmt":"2019-04-22T06:10:32","guid":{"rendered":"http:\/\/www.adtechamm.com\/?p=4760"},"modified":"2022-10-05T03:02:13","modified_gmt":"2022-10-05T03:02:13","slug":"degassing-aluminum-with-nitrogen","status":"publish","type":"post","link":"https:\/\/www.adtechamm.com\/tr\/degassing-aluminum-with-nitrogen\/","title":{"rendered":"Al\u00fcminyumun Azotla Gazdan Ar\u0131nd\u0131r\u0131lmas\u0131"},"content":{"rendered":"

Al\u00fcminyumun Azotla Gazdan Ar\u0131nd\u0131r\u0131lmas\u0131<\/strong><\/p>\n

Al\u00fcminyum ve al\u00fcminyum ala\u015f\u0131m\u0131 eriyiklerinde b\u00fcy\u00fck miktarda hidrojen, metal ve metalik olmayan kal\u0131nt\u0131lar bulunur.
\nYukar\u0131da belirtilen zararl\u0131 maddeler d\u00f6k\u00fcmden \u00f6nce zaman\u0131nda giderilemezse, d\u00f6k\u00fcm\u00fcn i\u00e7inde ve \u00fczerinde g\u00f6zenekler, kal\u0131nt\u0131lar ve gev\u015feklik gibi d\u00f6k\u00fcm kusurlar\u0131 olu\u015fur; bu durum, d\u00f6k\u00fcmlerin fiziksel, kimyasal, mekanik ve ileri i\u015fleme \u00f6zelliklerini ciddi \u015fekilde etkiler ve b\u00fcy\u00fck miktarda at\u0131k \u00fcr\u00fcn olu\u015fmas\u0131na neden olur.
\nK\u00fcrek veya potan\u0131n astar\u0131nda korozyon g\u00f6r\u00fclmez. Ar\u0131tma ortam\u0131 olarak argon veya azot kullan\u0131ld\u0131\u011f\u0131ndan, \u00e7evreye herhangi bir kirlilik olu\u015fmaz.<\/p>\n

\"Al\u00fcminyumun<\/p>\n

Al\u00fcminyumun Azotla Gazdan Ar\u0131nd\u0131r\u0131lmas\u0131<\/strong>
\n1. Sabit al\u00fcminyum s\u0131v\u0131 kar\u0131\u015ft\u0131rma ve ar\u0131tma gaz giderici, al\u00fcminyum ve at\u0131k al\u00fcminyum ala\u015f\u0131m\u0131 eritme i\u015flemlerinde \u015fut i\u00e7indeki \u00e7\u00f6zeltinin ar\u0131t\u0131lmas\u0131, gazdan ar\u0131nd\u0131r\u0131lmas\u0131 ve safla\u015ft\u0131r\u0131lmas\u0131 i\u00e7in uygundur; ayr\u0131ca ar\u0131tma ve gazdan ar\u0131nd\u0131rma amac\u0131yla kaynatma f\u0131r\u0131n\u0131n\u0131n kapa\u011f\u0131 \u00fczerine de yerle\u015ftirilebilir.<\/p>\n

2. Al\u00fcminyumdan Gaz\u0131n Giderilmesi<\/a> Azot (hidrojen giderme) ekipman\u0131, ar\u0131tma maddesi olarak argon veya azot kullan\u0131larak al\u00fcminyum d\u00f6k\u00fcm i\u00e7in uygundur.
\nAl\u00fcminyum eriyikinden hidrojen, metaller ve metalik olmayan kal\u0131nt\u0131lar\u0131 ay\u0131ran, tesis d\u0131\u015f\u0131nda bulunan bir ar\u0131tma tesisi.
\n\u201cAzotla Al\u00fcminyum Gaz Giderme\u201d i\u015fleminin grafit rotoru, al\u00fcminyum eriyi\u011finin i\u00e7ine yerle\u015ftirilir ve belirli miktarda ar\u0131t\u0131lm\u0131\u015f gaz, y\u00fcksek h\u0131zda d\u00f6nen grafit rotor vas\u0131tas\u0131yla eriyi\u011fin i\u00e7ine verilir.
\nGrafit rotor ile s\u0131v\u0131 al\u00fcminyumun nispeten y\u00fcksek h\u0131zda kesilmesinin ard\u0131ndan, ince kabarc\u0131klar olu\u015fur ve bunlar al\u00fcminyum eriyi\u011fi i\u00e7inde homojen bir \u015fekilde da\u011f\u0131l\u0131r.
\nKabarc\u0131k i\u00e7indeki hidrojen k\u0131smi bas\u0131nc\u0131 s\u0131f\u0131r oldu\u011fu i\u00e7in, al\u00fcminyum eriyikindeki hidrojen k\u0131smi bas\u0131nc\u0131 y\u00fcksektir; bu da al\u00fcminyum eriyikindeki hidrojenin kabarc\u0131\u011fa kademeli olarak yay\u0131lmas\u0131na neden olur.
\nAl\u00fcminyum eriyigindeki metal ve metal olmayan kal\u0131nt\u0131lar kabarc\u0131\u011f\u0131n y\u00fczeyine adsorbe olur; kabarc\u0131klar ve beraberlerinde ta\u015f\u0131d\u0131klar\u0131 kal\u0131nt\u0131lar y\u00fczeye \u00e7\u0131kar ve b\u00f6ylece al\u00fcminyum eriyigindeki hidrojen ve kal\u0131nt\u0131lar\u0131n giderilmesi amac\u0131na ula\u015f\u0131l\u0131r.<\/p>\n

3. P\u00fcsk\u00fcrtmeli ar\u0131tma gaz giderici, mobil al\u00fcminyum s\u0131v\u0131 ar\u0131tma gaz gidericisini temel al\u0131r ve buna otomatik toz besleme mekanizmas\u0131 eklenmi\u015ftir.
\nD\u00f6nme i\u015flemi s\u0131ras\u0131nda azot veya argon verilirken, toz besleme miktar\u0131, toz besleme s\u00fcresi ve d\u00f6nen rotor h\u0131z\u0131 gibi parametreler ayarlanabilir; bu cihaz, al\u00fcminyum s\u0131v\u0131s\u0131n\u0131n ar\u0131t\u0131lmas\u0131, gaz giderimi ve c\u00fcruf gideriminin ayn\u0131 anda ger\u00e7ekle\u015ftirildi\u011fi yeni bir t\u00fcr cihazd\u0131r.<\/p>\n

4. Kald\u0131rma tipinde ar\u0131tma gaz giderici, al\u00fcminyum ala\u015f\u0131m\u0131 \u00e7\u00f6zeltisi gaz giderme \u00fcnitesi<\/a>, pota f\u0131r\u0131n\u0131n\u0131n \u00fczerine yerle\u015ftirilecek tahrikli kald\u0131rmal\u0131 hava giderici kullan\u0131larak.
\nGrafit \u00e7ubuk, s\u0131v\u0131 al\u00fcminyumun merkeziyle hizaland\u0131ktan sonra, kar\u0131\u015ft\u0131rma ve azot anahtar\u0131 a\u00e7\u0131l\u0131r ve d\u00f6nme i\u015flemi s\u0131ras\u0131nda azot gaz\u0131 verilir; yani, s\u0131v\u0131 al\u00fcminyumdaki hidrojen giderilir ve c\u00fcruf, s\u0131v\u0131 al\u00fcminyumun y\u00fczeyine do\u011fru kar\u0131\u015ft\u0131r\u0131l\u0131r.<\/p>\n

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