{"id":6342,"date":"2026-10-16T14:39:20","date_gmt":"2026-10-16T11:39:20","guid":{"rendered":"https:\/\/www.erdemmakinaltd.com\/blog\/aluminyum-dokum-gozenekliligi-nedenleri-ve-cozumleri\/"},"modified":"2026-10-16T14:41:34","modified_gmt":"2026-10-16T11:41:34","slug":"aluminyum-dokum-gozenekliligi-nedenleri-ve-cozumleri","status":"publish","type":"post","link":"https:\/\/www.erdemmakinaltd.com\/fr\/blog\/aluminyum-dokum-gozenekliligi-nedenleri-ve-cozumleri\/","title":{"rendered":"Al\u00fcminyum D\u00f6k\u00fcm G\u00f6zeneklili\u011fi: Nedenleri ve \u00c7\u00f6z\u00fcmleri"},"content":{"rendered":"
<\/div>

Al\u00fcminyum D\u00f6k\u00fcm G\u00f6zeneklili\u011fi: Nedenleri ve \u00c7\u00f6z\u00fcmleri<\/h3>\n
\n\t

Kal\u0131ptan \u00e7\u0131kan par\u00e7alar d\u0131\u015far\u0131dan kusursuz g\u00f6r\u00fcn\u00fcr, fakat i\u015fleme veya s\u0131zd\u0131rmazl\u0131k testinde ortaya \u00e7\u0131kan k\u00fc\u00e7\u00fck bo\u015fluklar partiyi hurdaya \u00e7\u0131kar\u0131r. Bu tablo, al\u00fcminyum d\u00f6k\u00fcm g\u00f6zeneklili\u011fi<\/strong> ile kar\u015f\u0131la\u015fan bir\u00e7ok d\u00f6k\u00fcmhanenin ortak sorunudur.<\/p>\n

G\u00f6zeneklilik tek bir nedene ba\u011fl\u0131 de\u011fildir. Eriyik kalitesi, f\u0131r\u0131n s\u0131cakl\u0131\u011f\u0131, metal transferi, enjeksiyon parametreleri, kal\u0131p \u0131s\u0131s\u0131 ve par\u00e7a tasar\u0131m\u0131 ayn\u0131 sonucu farkl\u0131 yollardan do\u011furabilir. Bu yaz\u0131da g\u00f6zenek t\u00fcrlerini, olu\u015fum nedenlerini ve \u00fcretim hatt\u0131nda uygulayabilece\u011finiz \u00f6nlemleri ad\u0131m ad\u0131m ele al\u0131yoruz.<\/p>\n

Al\u00fcminyum d\u00f6k\u00fcm g\u00f6zeneklili\u011fi nedir ve neden \u00f6nemlidir?<\/h2>\n

G\u00f6zeneklilik, kat\u0131la\u015fm\u0131\u015f d\u00f6k\u00fcm par\u00e7an\u0131n i\u00e7inde veya y\u00fczeyine yak\u0131n b\u00f6lgesinde kalan bo\u015fluklard\u0131r. Bo\u015fluklar mikroskobik boyutta olabilece\u011fi gibi, kesit al\u0131nd\u0131\u011f\u0131nda g\u00f6zle g\u00f6r\u00fclecek b\u00fcy\u00fckl\u00fc\u011fe de ula\u015fabilir. Par\u00e7an\u0131n mekanik dayan\u0131m\u0131n\u0131 d\u00fc\u015f\u00fcr\u00fcr, yorulma \u00f6mr\u00fcn\u00fc k\u0131salt\u0131r ve bas\u0131n\u00e7 alt\u0131nda \u00e7al\u0131\u015fan g\u00f6vdelerde s\u0131z\u0131nt\u0131ya yol a\u00e7ar.<\/p>\n

Etkisi, par\u00e7an\u0131n g\u00f6revine g\u00f6re de\u011fi\u015fir. Dekoratif bir kapak i\u00e7in k\u00fc\u00e7\u00fck bir y\u00fczey g\u00f6zene\u011fi kabul edilebilir. Hidrolik bir g\u00f6vde, motor blo\u011fu veya ak\u00fc kutusu gibi par\u00e7alarda ise ayn\u0131 kusur do\u011frudan reddedilme nedenidir. M\u00fc\u015fteri kabul kriterleri \u00e7o\u011fu zaman g\u00f6zenek boyutunu, say\u0131s\u0131n\u0131 ve bulundu\u011fu b\u00f6lgeyi ayr\u0131 ayr\u0131 s\u0131n\u0131rlar.<\/p>\n

G\u00f6zeneklili\u011fi \u00f6nlemenin en kolay yolu, hangi t\u00fcrle kar\u015f\u0131 kar\u015f\u0131ya oldu\u011funuzu do\u011fru tan\u0131mlamakt\u0131r. \u00c7\u00fcnk\u00fc gaz g\u00f6zene\u011fi i\u00e7in i\u015fe yarayan bir \u00f6nlem, b\u00fcz\u00fclme g\u00f6zene\u011finde hi\u00e7bir fark yaratmayabilir.<\/p>\n

G\u00f6zeneklilik t\u00fcrleri: Gaz, b\u00fcz\u00fclme ve oksit kaynakl\u0131 bo\u015fluklar<\/h2>\n

D\u00f6k\u00fcmhanelerde \u00fc\u00e7 temel g\u00f6zenek grubu g\u00f6r\u00fcl\u00fcr. Her birinin kesitteki g\u00f6r\u00fcn\u00fcm\u00fc ve \u00e7\u00f6z\u00fcm yolu farkl\u0131d\u0131r.<\/p>\n

Gaz g\u00f6zeneklili\u011fi<\/h3>\n

Gaz g\u00f6zenekleri genellikle yuvarlak ve y\u00fczeyi p\u00fcr\u00fczs\u00fcz bo\u015fluklar olarak g\u00f6r\u00fcn\u00fcr. Kat\u0131la\u015fma s\u0131ras\u0131nda al\u00fcminyumda \u00e7\u00f6z\u00fcnm\u00fc\u015f hidrojenin metalden ayr\u0131lmas\u0131 bu bo\u015fluklar\u0131 olu\u015fturur. S\u0131v\u0131 al\u00fcminyum, kat\u0131 al\u00fcminyuma g\u00f6re \u00e7ok daha fazla hidrojen \u00e7\u00f6zebilir. Metal so\u011furken bu fazla gaz \u00e7\u0131k\u0131\u015f yolu arar ve hapsolursa g\u00f6zene\u011fe d\u00f6n\u00fc\u015f\u00fcr.<\/p>\n

B\u00fcz\u00fclme g\u00f6zeneklili\u011fi<\/h3>\n

Al\u00fcminyum s\u0131v\u0131dan kat\u0131ya ge\u00e7erken hacim kaybeder. Kal\u0131b\u0131n son kat\u0131la\u015fan b\u00f6lgesine yeterli s\u0131v\u0131 metal ula\u015fmazsa bu b\u00f6lgede d\u00fczensiz, k\u00f6\u015feli ve \u00e7o\u011fu zaman dallanm\u0131\u015f bo\u015fluklar olu\u015fur. Kal\u0131n et b\u00f6lgeleri, s\u0131cak noktalar ve yetersiz besleme bu t\u00fcr\u00fcn en s\u0131k nedenleridir.<\/p>\n

Oksit ve hava hapsi kaynakl\u0131 bo\u015fluklar<\/h3>\n

T\u00fcrb\u00fclansl\u0131 dolum s\u0131ras\u0131nda metal y\u00fczeyindeki oksit filmi eriyi\u011fin i\u00e7ine katlanabilir. Ayn\u0131 \u015fekilde kal\u0131p bo\u015flu\u011fundaki hava, metal ak\u0131\u015f\u0131yla birlikte par\u00e7an\u0131n i\u00e7ine hapsolabilir. Bu durumda g\u00f6zenekler genellikle d\u00fczensizdir ve oksit katmanlar\u0131yla birlikte g\u00f6r\u00fcl\u00fcr. Bas\u0131n\u00e7l\u0131 d\u00f6k\u00fcmde en s\u0131k kar\u015f\u0131la\u015f\u0131lan problemlerden biridir.<\/p>\n

Eriyik haz\u0131rl\u0131\u011f\u0131nda g\u00f6zeneklili\u011fin olu\u015fma nedenleri<\/h2>\n

G\u00f6zeneklili\u011fin b\u00fcy\u00fck b\u00f6l\u00fcm\u00fc kal\u0131ba hi\u00e7 girmeden, ergitme ve bekletme a\u015famas\u0131nda \u015fekillenir. Bu y\u00fczden \u00f6nce f\u0131r\u0131n taraf\u0131na bakmak mant\u0131kl\u0131d\u0131r.<\/p>\n

Hidrojen kaynaklar\u0131<\/h3>\n

Eriyikteki hidrojenin ana kayna\u011f\u0131 neme dayan\u0131r. Nemli k\u00fcl\u00e7e, kirli veya ya\u011fl\u0131 geri d\u00f6n\u00fc\u015f malzemesi, \u0131slak kep\u00e7e ve alet, nem \u00e7eken flux, hatta havadaki y\u00fcksek ba\u011f\u0131l nem hidrojeni art\u0131rabilir. S\u0131cak al\u00fcminyum su buhar\u0131yla temas etti\u011finde ayr\u0131\u015fma reaksiyonu hidrojen verir.<\/p>\n

\u015earj malzemesini kullanmadan \u00f6nce kurutmak ve \u00f6n \u0131s\u0131tmaya almak basit fakat etkili bir ad\u0131md\u0131r. Kullan\u0131lan kep\u00e7e, \u00e7ubuk ve numune kaplar\u0131n\u0131n da eriyi\u011fe dald\u0131r\u0131lmadan \u00f6nce tamamen kuru olmas\u0131 gerekir.<\/p>\n

S\u0131cakl\u0131k ve bekletme s\u00fcresi<\/h3>\n

Eriyik s\u0131cakl\u0131\u011f\u0131 y\u00fckseldik\u00e7e hidrojen \u00e7\u00f6z\u00fcn\u00fcrl\u00fc\u011f\u00fc artar. Metali gere\u011finden y\u00fcksek s\u0131cakl\u0131kta tutmak hem enerji t\u00fcketimini hem de gaz alma ihtiyac\u0131n\u0131 b\u00fcy\u00fctt\u00fcr. Uzun bekletme ise oksit olu\u015fumunu art\u0131r\u0131r.<\/p>\n

Tutma f\u0131r\u0131n\u0131n\u0131n s\u0131cakl\u0131k kararl\u0131l\u0131\u011f\u0131 bu y\u00fczden \u00f6nemlidir. Dalgalanan s\u0131cakl\u0131k, bir saat \u00f6nce temizlenen eriyi\u011fin kalitesini sonraki saatlerde d\u00fc\u015f\u00fcrebilir. Al\u00fcminyum tutma f\u0131r\u0131nlar\u0131<\/a>, s\u0131v\u0131 metali ihtiya\u00e7 duyulan s\u0131cakl\u0131kta sabit tutarak bu riski azaltmak i\u00e7in kullan\u0131l\u0131r.<\/p>\n

C\u00fcruf ve oksit birikimi<\/h3>\n

F\u0131r\u0131n y\u00fczeyinde biriken c\u00fcruf, \u015farj s\u0131ras\u0131nda kar\u0131\u015f\u0131rsa eriyi\u011fe oksit ta\u015f\u0131r. Her \u015farjdan sonra c\u00fcrufu almak ve f\u0131r\u0131n duvarlar\u0131ndaki birikintiyi d\u00fczenli temizlemek gerekir. Ala\u015f\u0131m de\u011fi\u015fimlerinde ayr\u0131ca temizlik yap\u0131lmazsa \u00f6nceki \u00fcretimden kalan kal\u0131nt\u0131lar yeni partiye ge\u00e7ebilir.<\/p>\n

Ergitme ve tutma a\u015famas\u0131n\u0131 birlikte planlamak i\u00e7in al\u00fcminyum ergitme f\u0131r\u0131nlar\u0131 se\u00e7erken dikkat edilecek kriterleri<\/a> okuyabilirsiniz.<\/p>\n

Gaz alma ve filtreleme ile eriyik kalitesini y\u00fckseltmek<\/h2>\n

Eriyikteki hidrojeni ve oksitleri azaltman\u0131n yerle\u015fik y\u00f6ntemi, gaz alma i\u015flemidir. D\u00f6nen bir rotor, eriyi\u011fin i\u00e7ine argon veya azot gibi inert bir gaz verir. \u00c7ok k\u00fc\u00e7\u00fck kabarc\u0131klar y\u00fckselirken hidrojeni \u00fczerine \u00e7eker, ayn\u0131 zamanda oksit par\u00e7ac\u0131klar\u0131n\u0131 y\u00fczeye ta\u015f\u0131r. Y\u00fczeyde toplanan c\u00fcruf ise al\u0131n\u0131r.<\/p>\n

Verimli bir gaz alma i\u00e7in \u00fc\u00e7 parametre birlikte d\u00fc\u015f\u00fcn\u00fclmelidir:<\/p>\n