![\"Hidrojenin](\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/07\/Remove-Hydrogen.jpg\")
<\/p>\nAl\u00fcminyum ala\u015f\u0131mlar\u0131 gaz\u0131 kolayca emer ve bu, d\u00f6k\u00fcm al\u00fcminyum ala\u015f\u0131mlar\u0131n\u0131n temel \u00f6zelliklerindendir. S\u0131v\u0131 al\u00fcminyum ve al\u00fcminyum ala\u015f\u0131m\u0131n\u0131n bile\u015fenlerinin, f\u0131r\u0131n malzemesindeki nem, organik maddelerin yanma \u00fcr\u00fcnleri ve kal\u0131pla reaksiyona girerek \u00fcretti\u011fi hidrojen, s\u0131v\u0131 al\u00fcminyum taraf\u0131ndan emilir. S\u0131v\u0131 al\u00fcminyumdaki hidrojenin nas\u0131l giderilece\u011fi, al\u00fcminyum d\u00f6k\u00fcmhanelerinin en b\u00fcy\u00fck endi\u015fesidir.<\/p>\n
Al\u00fcminyum ala\u015f\u0131m\u0131 eriyi\u011finin s\u0131cakl\u0131\u011f\u0131 ne kadar y\u00fcksekse, o kadar fazla hidrojen emilir; 700 \u2103'de, 100 g al\u00fcminyum ba\u015f\u0131na hidrojen \u00e7\u00f6z\u00fcn\u00fcrl\u00fc\u011f\u00fc 0,5 ~ 0,9'dur; s\u0131cakl\u0131k 850 \u2103'ye y\u00fckseltildi\u011finde, hidrojen \u00e7\u00f6z\u00fcn\u00fcrl\u00fc\u011f\u00fc 2 ila 3 kat artar. Alkali metal safs\u0131zl\u0131klar\u0131 i\u00e7erdi\u011finde, al\u00fcminyum eriyik i\u00e7indeki hidrojenin \u00e7\u00f6z\u00fcn\u00fcrl\u00fc\u011f\u00fc \u00f6nemli \u00f6l\u00e7\u00fcde artar.<\/p>\n
Erime s\u0131ras\u0131nda ger\u00e7ekle\u015fen getterleme s\u00fcrecine ek olarak, d\u00f6k\u00fcm al\u00fcminyum ala\u015f\u0131mlar\u0131nda kal\u0131ba d\u00f6k\u00fcm s\u0131ras\u0131nda da getterleme meydana gelir. Kal\u0131ba giren s\u0131v\u0131 metalin s\u0131cakl\u0131\u011f\u0131 d\u00fc\u015ft\u00fck\u00e7e gaz\u0131n \u00e7\u00f6z\u00fcn\u00fcrl\u00fc\u011f\u00fc azal\u0131r, fazla gaz \u00e7\u00f6kelir ve gaz\u0131n bir k\u0131sm\u0131 d\u0131\u015far\u0131 \u00e7\u0131kamaz. D\u00f6k\u00fcmde, genellikle \u201ci\u011fne delikleri\u201d olarak adland\u0131r\u0131lan g\u00f6zenekler olu\u015fur. Gaz bazen b\u00fcz\u00fclme bo\u015flu\u011fuyla birle\u015fir ve s\u0131v\u0131 al\u00fcminyumda \u00e7\u00f6kelen gaz, b\u00fcz\u00fclme bo\u015flu\u011funda kal\u0131r. Kabarc\u0131\u011f\u0131n olu\u015fturdu\u011fu bas\u0131n\u00e7 y\u00fcksekse, g\u00f6zenek y\u00fczeyi p\u00fcr\u00fczs\u00fczd\u00fcr ve g\u00f6zenek \u00e7evresinde parlak tabakalardan olu\u015fan bir halka g\u00f6r\u00fcl\u00fcr. Kabarc\u0131\u011f\u0131n olu\u015fturdu\u011fu bas\u0131n\u00e7 d\u00fc\u015f\u00fckse, deli\u011fin i\u00e7 y\u00fczeyi buru\u015fuktur ve \u201csinek aya\u011f\u0131\u201d gibi g\u00f6r\u00fcn\u00fcr. Dikkatli bir inceleme, b\u00fcz\u00fclme \u00f6zelliklerini ortaya \u00e7\u0131kar\u0131r.<\/p>\n
<\/p>\n
Al\u00fcminyum ala\u015f\u0131ml\u0131 d\u00f6k\u00fcm s\u0131v\u0131s\u0131ndaki hidrojen i\u00e7eri\u011fi ne kadar y\u00fcksekse, d\u00f6k\u00fcmde o kadar fazla i\u011fne deli\u011fi olu\u015fur. Al\u00fcminyum d\u00f6k\u00fcmlerdeki i\u011fne delikleri, sadece d\u00f6k\u00fcmlerin hava s\u0131zd\u0131rmazl\u0131\u011f\u0131n\u0131 ve korozyon direncini azaltmakla kalmaz, ayn\u0131 zamanda ala\u015f\u0131m\u0131n mekanik \u00f6zelliklerini de d\u00fc\u015f\u00fcr\u00fcr. G\u00f6zeneksiz veya az g\u00f6zenekli al\u00fcminyum d\u00f6k\u00fcmler elde etmenin anahtar\u0131, eritme ko\u015fullar\u0131d\u0131r. Ala\u015f\u0131m\u0131 korumak i\u00e7in eritme s\u0131ras\u0131nda bir kaplama maddesi eklenirse, hava giri\u015fi b\u00fcy\u00fck \u00f6l\u00e7\u00fcde azal\u0131r. Al\u00fcminyum eriyi\u011finin ar\u0131t\u0131lmas\u0131, al\u00fcminyum eriyi\u011findeki hidrojen i\u00e7eri\u011fini etkili bir \u015fekilde kontrol edebilir.<\/p>\n
G\u00fcn\u00fcm\u00fczde, al\u00fcminyum ala\u015f\u0131ml\u0131 d\u00f6k\u00fcmlerdeki mikro delikleri ortadan kald\u0131rmak i\u00e7in en yayg\u0131n y\u00f6ntemler aras\u0131nda, eritme i\u015flemi s\u0131ras\u0131nda klor\u00fcr tuzlar\u0131n\u0131n ve klor\u00fcrlerin gazdan ar\u0131nd\u0131r\u0131lmas\u0131, klor ve azotla gazdan ar\u0131nd\u0131rma, vakumla gazdan ar\u0131nd\u0131rma, ultrasonik dalgalarla gazdan ar\u0131nd\u0131rma, filtreleme yoluyla gazdan ar\u0131nd\u0131rma vb. yer almaktad\u0131r. AdTech, \u00e7evrimi\u00e7i gaz giderme \u00fcnitesi<\/a> ve rafinaj ak\u0131s\u0131<\/a> s\u0131v\u0131 al\u00fcminyumdan hidrojenin uzakla\u015ft\u0131r\u0131lmas\u0131 i\u00e7in.<\/p>","protected":false},"excerpt":{"rendered":" Aluminum alloys easily absorb gas and are the main characteristics of cast aluminum alloys. The hydrogen produced by the reaction of the components of the…<\/p>","protected":false},"author":1,"featured_media":5601,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[1465,1464],"class_list":["post-2901","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-degassing-unit-for-aluminum","tag-remove-hydrogen-in-aluminum-liquid"],"yoast_head":"\n