{"id":10614,"date":"2023-04-11T08:02:47","date_gmt":"2023-04-11T08:02:47","guid":{"rendered":"http:\/\/www.adtechamm.com\/?p=10614"},"modified":"2023-04-11T08:02:47","modified_gmt":"2023-04-11T08:02:47","slug":"development-of-on-line-refining-and-degassing-unit-technology-and-equipment-for-aluminum-melt","status":"publish","type":"post","link":"https:\/\/www.adtechamm.com\/tr\/development-of-on-line-refining-and-degassing-unit-technology-and-equipment-for-aluminum-melt\/","title":{"rendered":"Al\u00fcminyum Eriyi\u011fi i\u00e7in \u00c7evrimi\u00e7i Ar\u0131tma ve Gaz Giderme Teknolojisi ve Ekipmanlar\u0131n\u0131n Geli\u015ftirilmesi"},"content":{"rendered":"

\u00d6zet: \u00c7evrimi\u00e7i gaz giderme i\u015flemi (gaz giderme \u00fcnitesi<\/a>) incelenmekte olup, g\u00fcn\u00fcm\u00fczde yayg\u0131n olarak kullan\u0131lan \u00e7e\u015fitli al\u00fcminyum ve al\u00fcminyum ala\u015f\u0131m\u0131 \u00e7evrimi\u00e7i gaz giderme s\u00fcre\u00e7leri ile ekipmanlar\u0131n\u0131n \u00f6zelliklerine g\u00f6re, kutu tipi gaz giderici, oluk tipi gaz giderici ve vakumlu gaz giderici ayr\u0131nt\u0131l\u0131 olarak a\u00e7\u0131klanmaktad\u0131r. Bu tipik al\u00fcminyum ve al\u00fcminyum ala\u015f\u0131m\u0131 \u00e7evrimi\u00e7i gaz gidericilerinin yap\u0131sal \u00f6zellikleri ve di\u011fer dikkat \u00e7ekici \u00f6zellikleri, \u00e7evrimi\u00e7i gaz giderme alan\u0131ndaki yeni geli\u015fmeleri tan\u0131tmaktad\u0131r. gaz giderme \u00fcnitesi<\/a> Ultrasonik gaz giderici teknolojisi ve bu tipik al\u00fcminyum ve al\u00fcminyum ala\u015f\u0131m\u0131 \u00e7evrimi\u00e7i gaz gidericilerin kapsaml\u0131 bir \u015fekilde de\u011ferlendirilmesi, al\u00fcminyum eriyik d\u00f6k\u00fcm at\u00f6lyesindeki avantaj ve dezavantajlar\u0131n belirlenmesi, al\u00fcminyum ve al\u00fcminyum ala\u015f\u0131mlar\u0131n\u0131n kalitesini art\u0131rmak i\u00e7in uygun gaz giderme prosesi ve ekipman\u0131n\u0131n se\u00e7ilmesine yard\u0131mc\u0131 olacakt\u0131r.<\/p>\n

Anahtar kelimeler: al\u00fcminyum eriyi\u011fi; \u00e7evrimi\u00e7i ar\u0131tma ve gaz giderme i\u015flemi; avantajlar ve dezavantajlar
\nAl\u00fcminyum ve ala\u015f\u0131mlar\u0131n\u0131n kalitesini etkileyen bir\u00e7ok fakt\u00f6r vard\u0131r; bunlar\u0131n aras\u0131nda erimi\u015f al\u00fcminyumdaki hidrojen i\u00e7eri\u011fi, kal\u0131nt\u0131lar ve alkali metal konsantrasyonu, al\u00fcminyum ala\u015f\u0131mlar\u0131n\u0131n kalitesi a\u00e7\u0131s\u0131ndan en \u00f6nemlileridir. Yurti\u00e7i ve yurtd\u0131\u015f\u0131ndaki \u00f6nde gelen \u00fcreticiler ve ara\u015ft\u0131rma kurumlar\u0131, erimi\u015f al\u00fcminyumdaki hidrojen ve kal\u0131nt\u0131 i\u00e7eri\u011finin nas\u0131l azalt\u0131laca\u011f\u0131na dair ara\u015ft\u0131rmalara b\u00fcy\u00fck miktarda kaynak ay\u0131rm\u0131\u015flard\u0131r ve piyasada bir\u00e7ok yeni proses ve ekipman ortaya \u00e7\u0131km\u0131\u015ft\u0131r.
\n1. \u00c7evrimi\u00e7i gaz giderme i\u015flemi
\n\u00c7evrimi\u00e7i gaz giderme i\u015flemi genel olarak gaz \u00fcfleme y\u00f6ntemi, vakum ar\u0131tma y\u00f6ntemi ve ultrasonik ar\u0131tma y\u00f6ntemi olarak \u00fc\u00e7 gruba ayr\u0131labilir. Bu makale, gaz \u00fcfleme y\u00f6ntemine odaklanmaktad\u0131r.
\n1.1 Gaz \u00fcfleme y\u00f6nteminin \u00e7al\u0131\u015fma prensibi
\nFlotasyon y\u00f6ntemi olarak da bilinen gaz \u00fcfleme y\u00f6ntemi, esas olarak erimi\u015f al\u00fcminyumun i\u00e7ine inert gaz \u00fcfleyerek \u00e7ok say\u0131da minik kabarc\u0131k olu\u015fturmay\u0131 ama\u00e7lamaktad\u0131r. Kabarc\u0131k i\u00e7indeki hidrojenin ba\u015flang\u0131\u00e7 bas\u0131nc\u0131 s\u0131f\u0131rd\u0131r ve kabarc\u0131k ile al\u00fcminyum s\u0131v\u0131s\u0131 aras\u0131ndaki aray\u00fczde bir hidrojen bas\u0131n\u00e7 fark\u0131 olu\u015fur; b\u00f6ylece al\u00fcminyum s\u0131v\u0131s\u0131nda \u00e7\u00f6z\u00fcnm\u00fc\u015f hidrojen s\u00fcrekli olarak kabarc\u0131\u011f\u0131n i\u00e7ine emilir. Bu emme s\u00fcreci, kabarc\u0131k i\u00e7indeki hidrojen bas\u0131nc\u0131 ile al\u00fcminyum s\u0131v\u0131s\u0131ndaki hidrojen bas\u0131nc\u0131 e\u015fit hale gelene kadar devam eder. Kabarc\u0131klar y\u00fczeye \u00e7\u0131kt\u0131ktan sonra, kabarc\u0131klar\u0131n i\u00e7indeki hidrojen d\u0131\u015far\u0131 \u00e7\u0131karak atmosfere kar\u0131\u015f\u0131r.
\nHidrojen giderme prensibinin \u015fematik \u015femas\u0131 \u015eekil 1\u2019de g\u00f6sterilmi\u015ftir.<\/p>\n

\"Hidrojen

Hidrojen giderme prensibinin \u015fematik diyagram\u0131<\/p><\/div>\n

Buna ek olarak, kabarc\u0131klar eriyik i\u00e7inden ge\u00e7erken eriyik i\u00e7indeki oksit kal\u0131nt\u0131lar\u0131yla kar\u015f\u0131la\u015f\u0131r; bu kal\u0131nt\u0131lar kabarc\u0131klar\u0131n y\u00fczeyine adsorbe olur ve kabarc\u0131klarla birlikte eriyik y\u00fczeyine y\u00fckselerek uzakla\u015ft\u0131r\u0131l\u0131r. Kal\u0131nt\u0131lar\u0131n uzakla\u015ft\u0131r\u0131lmas\u0131na ili\u015fkin \u015fematik \u015fema \u015eekil 2\u2019de g\u00f6sterilmi\u015ftir.
\nBu nedenle, kabarc\u0131klar\u0131n yukar\u0131 do\u011fru y\u00fckselme s\u00fcreci, sadece hidrojenin d\u0131\u015far\u0131 at\u0131lmas\u0131n\u0131 sa\u011flayarak gaz giderme etkisini ger\u00e7ekle\u015ftirmekle kalmaz, ayn\u0131 zamanda oksidasyon kal\u0131nt\u0131lar\u0131n\u0131 da d\u0131\u015far\u0131 atarak ar\u0131tma etkisini sa\u011flar.<\/p>\n

\"Kal\u0131nt\u0131lar\u0131n

Kal\u0131nt\u0131lar\u0131n giderilmesi ilkesinin \u015fematik diyagram\u0131<\/p><\/div>\n

1.2 \u0130nert gaz besleme y\u00f6ntemi
\nGaz \u00fcfleme y\u00f6nteminde, erimi\u015f al\u00fcminyuma inert gaz\u0131n verili\u015f \u015fekli, gaz giderme ve ar\u0131tma i\u015fleminin etkinli\u011fi \u00fczerinde b\u00fcy\u00fck bir etkiye sahiptir. G\u00fcn\u00fcm\u00fczde, d\u00f6k\u00fcm tesislerinde erimi\u015f al\u00fcminyuma inert gaz\u0131n verili\u015finde yayg\u0131n olarak kullan\u0131lan \u00fc\u00e7 y\u00f6ntem bulunmaktad\u0131r: gaz giderme borular\u0131, havaland\u0131rma tu\u011flalar\u0131 ve d\u00f6ner gaz giderme \u00fcniteleri<\/a>, \u015eekil 3'te g\u00f6sterildi\u011fi gibi.<\/p>\n

\"\u0130nert

\u0130nert gaz besleme y\u00f6ntemi<\/p><\/div>\n

Gaz \u00fcfleme y\u00f6nteminin en basit \u015fekli, erimi\u015f al\u00fcminyumun i\u00e7ine bir ar\u0131tma borusu (genellikle emaye \u00e7elik boru) yerle\u015ftirmek ve ard\u0131ndan inert gaz ge\u00e7irmektir. Bu tek delikli tek borulu gaz giderme y\u00f6nteminin gaz giderme etkisi zay\u0131ft\u0131r. Ayr\u0131ca, f\u0131r\u0131n\u0131n taban\u0131na nefes alabilen tu\u011flalar yerle\u015ftiren baz\u0131 d\u00f6k\u00fcm fabrikalar\u0131 da bulunmaktad\u0131r. \u0130nert gaz, nefes alabilen tu\u011flalardan ge\u00e7erek \u00e7ok say\u0131da kabarc\u0131k olu\u015fturur. Tek delikli \u00fcfleme y\u00f6ntemiyle kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda, g\u00f6zenekli \u00fcfleme y\u00f6nteminin gaz giderme ve ar\u0131tma etkisi biraz daha iyidir; ancak bu tu\u011flalar\u0131n kolayca t\u0131kanmas\u0131, s\u0131v\u0131 al\u00fcminyum s\u0131z\u0131nt\u0131s\u0131, bak\u0131m zorlu\u011fu, s\u0131v\u0131 y\u00fczeyinde ciddi \u00e7alkant\u0131 ve daha fazla c\u00fcruf olu\u015fumu gibi dezavantajlar\u0131 vard\u0131r.
\nAra\u015ft\u0131rmalar\u0131n derinle\u015fmesiyle birlikte, d\u00f6ner gaz giderme y\u00f6ntemleri birbiri ard\u0131na ortaya \u00e7\u0131km\u0131\u015ft\u0131r. Temel prensip, inert gaz\u0131n d\u00f6nen rotor arac\u0131l\u0131\u011f\u0131yla erimi\u015f al\u00fcminyumun i\u00e7ine p\u00fcsk\u00fcrt\u00fclerek \u00e7ok say\u0131da da\u011f\u0131n\u0131k k\u00fc\u00e7\u00fck kabarc\u0131klar\u0131n olu\u015fmas\u0131n\u0131 sa\u011flamak ve bu sayede gaz giderme ve ar\u0131tma i\u015flemini ger\u00e7ekle\u015ftirmektir. Gaz giderme verimlili\u011fini art\u0131rmak i\u00e7in, inert gaz kabarc\u0131klar\u0131n\u0131n say\u0131s\u0131 m\u00fcmk\u00fcn oldu\u011funca fazla olmal\u0131, \u00e7aplar\u0131 k\u00fc\u00e7\u00fck olmal\u0131, al\u00fcminyum s\u0131v\u0131s\u0131 i\u00e7indeki kalma s\u00fcreleri uzun olmal\u0131 ve al\u00fcminyum s\u0131v\u0131s\u0131n\u0131n y\u00fczeyi m\u00fcmk\u00fcn oldu\u011funca sabit olmal\u0131d\u0131r.
\nYukar\u0131daki amaca ula\u015fmak i\u00e7in, her bir gaz giderici \u00fcreticisi, rotor\/d\u00f6ner \u00e7ubu\u011fun tasar\u0131m\u0131, kutunun i\u00e7 kaplamas\u0131 ve kutunun s\u0131zd\u0131rmazl\u0131k y\u00f6ntemi konusunda kendine \u00f6zg\u00fc \u00f6zelliklere sahiptir; bu da g\u00fcn\u00fcm\u00fczde piyasada bulunan \u00e7e\u015fitli tipte gaz gidericilerin ortaya \u00e7\u0131kmas\u0131na neden olmaktad\u0131r. Gaz giderme s\u00fcrecine ve gaz gidericinin yap\u0131sal \u00f6zelliklerine g\u00f6re, bu cihazlar genel olarak kutu tipi gaz giderici, oluk tipi gaz giderici, vakumlu gaz giderici ve ultrasonik gaz giderici olarak s\u0131n\u0131fland\u0131r\u0131labilir.
\nEksik istatistiklere g\u00f6re, \u015fu anda piyasada bulunan \u00e7evrimi\u00e7i gaz gidericilerin 99%\u2019si kutu tipi d\u00f6ner gaz gidericilerdir. Kutu tipi gaz gidericiler aras\u0131nda ABD'deki PYROTEK firmas\u0131n\u0131n SNIF ve ILDU gaz gidericileri, ABD'deki Apogee firmas\u0131n\u0131n Reveot gaz gidericileri, Fransa'daki Novelis firmas\u0131n\u0131n APLUR gaz gidericileri, Japonya'daki Fujiko GBF gaz gidericileri ve Mitsui (Japonya) gaz gidericileri bulunmaktad\u0131r. TKR) gaz giderici ve Alcoa (Alcoa) 622 gaz giderici en yayg\u0131n olanlard\u0131r; oluk tipi gaz giderici, Kanada\u2019daki STAS \u015firketi taraf\u0131ndan \u00fcretilen en yayg\u0131n ACD gaz gidericisidir; vakumlu gaz giderici ise Hydro taraf\u0131ndan \u00fcretilen Hycast\u2019t\u0131r. I-60Sir en yayg\u0131n olan\u0131d\u0131r.
\nSon y\u0131llarda, ABD\u2019deki Southwire Co., Ltd. (Southwire) \u015firketi yeni bir ultrasonik gaz giderici geli\u015ftirmi\u015ftir.
\n2. \u00c7evrimi\u00e7i gaz giderme \u00fcnitesi<\/a>
\n2.1 Kutu tipi gaz giderici
\nAmerican Pilotec taraf\u0131ndan \u00fcretilen SNIF kutu tipi gaz gidericinin yap\u0131s\u0131 \u015eekil 4\u2019te g\u00f6sterilmi\u015ftir.<\/p>\n

\"SNIF

SNIF gaz gidericisinin yap\u0131s\u0131n\u0131n \u015fematik diyagram\u0131<\/p><\/div>\n

Erimi\u015f al\u00fcminyum, gaz giderici kutusuna akar ve refrakter kaplaman\u0131n i\u00e7inde kal\u0131r. Kutuda, erimi\u015f al\u00fcminyumu erimi\u015f halde tutmak i\u00e7in bir \u0131s\u0131t\u0131c\u0131 bulunur. \u0130nert gaz, d\u00f6nen rotor taraf\u0131ndan p\u00fcsk\u00fcrt\u00fcld\u00fckten sonra, y\u00fcksek h\u0131zda d\u00f6nen rotor taraf\u0131ndan say\u0131s\u0131z k\u00fc\u00e7\u00fck kabarc\u0131\u011fa ayr\u0131l\u0131r ve bu k\u00fc\u00e7\u00fck kabarc\u0131klar al\u00fcminyum s\u0131v\u0131s\u0131 i\u00e7inde yay\u0131l\u0131r ve y\u00fckselir, b\u00f6ylece hidrojeni giderir. K\u00fc\u00e7\u00fck kabarc\u0131klar\u0131n y\u00fckselme s\u00fcreci s\u0131ras\u0131nda, y\u00fczey geriliminin etkisiyle, kal\u0131nt\u0131lar\u0131n bir k\u0131sm\u0131 erimi\u015f al\u00fcminyumdan s\u0131v\u0131 y\u00fczeye \u00e7\u0131kar\u0131l\u0131r ve erimi\u015f al\u00fcminyumdaki kal\u0131nt\u0131lar\u0131 gidermek i\u00e7in bir k\u00f6p\u00fck tabakas\u0131 olu\u015fturur; ayn\u0131 zamanda, rotorun \u00e7alkalama etkisiyle s\u0131v\u0131 al\u00fcminyumun ala\u015f\u0131m bile\u015fimi daha homojen hale gelir.
\nKutu tipi gaz gidericinin en dikkat \u00e7ekici \u00f6zelli\u011fi, grafit stator ve grafit rotor\/rotor yap\u0131s\u0131d\u0131r. Grafit stator, s\u0131v\u0131 al\u00fcminyum i\u00e7inde d\u00f6nmez ve grafit rotor\/rotor grubu i\u00e7in bir d\u0131\u015f katman korumas\u0131 g\u00f6revi g\u00f6r\u00fcr. Grafit \u00e7ubuklar ve grafit rotorlar, al\u00fcminyum eriyi\u011fini kar\u0131\u015ft\u0131rmak \u00fczere bir araya getirilir. \u0130nert gaz, stator ile grafit \u00e7ubuk aras\u0131ndaki bo\u015fluktan ge\u00e7er ve statorun alt kenar\u0131ndan ve grafit rotorun \u00fcst kenar\u0131ndaki oluktan erimi\u015f al\u00fcminyumun i\u00e7ine p\u00fcsk\u00fcrt\u00fcl\u00fcr. SNIF grafit \u00e7ubuk\/rotor al\u00fcminyum s\u0131v\u0131s\u0131 sirk\u00fclasyon modu \u015eekil 5'te g\u00f6sterilmi\u015ftir.<\/p>\n

\"SNIF

SNIF d\u00f6ner \u00e7ubuk\/rotorlu al\u00fcminyum s\u0131v\u0131 sirk\u00fclasyon modu<\/p><\/div>\n

Grafit rotorun kesme kuvveti sayesinde erimi\u015f al\u00fcminyum a\u015fa\u011f\u0131 do\u011fru dola\u015ft\u0131r\u0131l\u0131r; bu sayede do\u011fal kald\u0131rma kuvvetinin etkisi dengelenir ve b\u00f6ylece rotor ile stator'dan d\u0131\u015far\u0131 at\u0131lan hava kabarc\u0131klar\u0131 radyal olarak enjekte edilerek erimi\u015f al\u00fcminyum i\u00e7inde e\u015fit bir \u015fekilde da\u011f\u0131l\u0131r; b\u00f6ylece en iyi gaz giderme ve ar\u0131tma etkisi elde edilir. Amerikan Parrotec taraf\u0131ndan \u00fcretilen bir ba\u015fka ILDU kutu tipi gaz giderici serisinde ise en dikkat \u00e7ekici \u00f6zellik d\u00f6nen \u00e7ubuk\/rotordur (bkz. \u015eekil 6).<\/p>\n

\"ILDU

ILDU \u00c7ubuk\/Rotor<\/p><\/div>\n

D\u00f6nen \u00e7ubuk\/rotorun malzemesi yeni BTS\u2019dir. \u015eu anda, di\u011fer gaz giderici rotorlar\u0131n\u0131n malzemeleri genellikle grafit, silikon karb\u00fcr ve silikon nitr\u00fcrd\u00fcr. Grafit, y\u00fcksek s\u0131cakl\u0131klarda (yakla\u015f\u0131k 750\u00b0C) kolayca yanar ve oksitlenir; bu da k\u0131r\u0131lmaya veya soyulmaya neden olarak s\u0131v\u0131 al\u00fcminyumu kirletir; silikon karb\u00fcr d\u00f6k\u00fcm rotor, termal \u015foka dayan\u0131kl\u0131 de\u011fildir ve h\u0131zl\u0131 so\u011futma ve termal \u015fok alt\u0131nda kolayca k\u0131r\u0131l\u0131r; silikon nitr\u00fcr d\u00f6ner \u00e7ubuk\/rotorun maliyeti ise \u00e7ok y\u00fcksektir. Bununla birlikte, BST rotorunun i\u00e7 k\u0131sm\u0131 grafit malzemeden yap\u0131lm\u0131\u015f olup d\u0131\u015f k\u0131sm\u0131 ise refrakter malzeme ile sinterlenmi\u015ftir; bu da yukar\u0131daki \u00fc\u00e7 malzemenin eksikliklerini ortadan kald\u0131rmaktad\u0131r. \u0130statistiklere g\u00f6re, s\u00fcrekli d\u00f6k\u00fcm ve haddeleme hatt\u0131nda hizmet \u00f6mr\u00fc 1 y\u0131ldan fazlad\u0131r.
\nKutu tipi gaz gidericinin bariz avantajlar\u0131 \u015funlard\u0131r: 1) Kabarc\u0131klar\u0131n kalma s\u00fcresini uzatarak gaz giderme ve ar\u0131tma etkisini art\u0131r\u0131r; 2) Kutudaki erimi\u015f al\u00fcminyumun s\u0131cakl\u0131\u011f\u0131n\u0131 d\u00f6k\u00fcm s\u0131cakl\u0131\u011f\u0131na e\u015fit veya daha y\u00fcksek tutar, b\u00f6ylece bekletme f\u0131r\u0131n\u0131n\u0131n s\u0131cakl\u0131\u011f\u0131n\u0131 d\u00fc\u015f\u00fcr\u00fcr; 3) D\u00f6k\u00fcm s\u0131cakl\u0131\u011f\u0131ndaki de\u011fi\u015fimi azalt\u0131r. Dezavantaj\u0131 ise, cihaz i\u00e7in gerekli kurulum alan\u0131n\u0131n nispeten geni\u015f olmas\u0131d\u0131r.
\n2.2 \u00c7ama\u015f\u0131r makinesi tipi gaz giderici
\nOluk tipi gaz giderici, gaz gidericiyi d\u00f6nd\u00fcrmek ve i\u015flemeyi tamamlamak i\u00e7in rotor\/\u00e7ubuk kullan\u0131r. Oluk tipi gaz giderici ile kutu tipi gaz giderici aras\u0131ndaki temel yap\u0131sal fark, oluk tipi gaz gidericinin i\u00e7 y\u00fczeyinin, d\u00f6k\u00fcm \u00fcretim hatt\u0131ndaki olu\u011fun i\u00e7 y\u00fczeyi ile ayn\u0131 hizada olmas\u0131d\u0131r; bu sayede gaz gidericide al\u00fcminyum kal\u0131nt\u0131s\u0131 kalmaz. Oluk tipi gaz gidericinin yap\u0131 \u015femas\u0131 \u015eekil 7'de g\u00f6sterilmi\u015ftir.<\/p>\n

\"Kanal

Kanal tipi gaz giderme \u00fcnitesinin \u015fematik diyagram\u0131<\/p><\/div>\n

Kanal tipi gaz gidericinin s\u0131zd\u0131rmazl\u0131k kapa\u011f\u0131 ve gaz giderme tank\u0131, nispeten s\u0131zd\u0131rmaz bir alan olu\u015fturur. D\u00f6k\u00fcm ba\u015flat\u0131ld\u0131\u011f\u0131nda, erimi\u015f al\u00fcminyum dald\u0131r\u0131lm\u0131\u015f bir ak\u0131\u015f yoluyla gaz giderme tank\u0131na girer. Gaz giderme tank\u0131ndaki al\u00fcminyum s\u0131v\u0131 seviyesi 200 mm'den y\u00fcksek oldu\u011funda, rotor al\u00fcminyum s\u0131v\u0131s\u0131n\u0131 kar\u0131\u015ft\u0131rmaya ba\u015flar ve al\u00fcminyum s\u0131v\u0131s\u0131na inert gaz p\u00fcsk\u00fcrt\u00fcr; b\u00f6ylece gaz giderme tank\u0131ndaki al\u00fcminyum s\u0131v\u0131s\u0131n\u0131n gaz\u0131 giderilir ve ar\u0131t\u0131l\u0131r. Geleneksel kutu tipi gaz gidericiyle kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda, oluk tipi gaz gidericinin avantajlar\u0131 aras\u0131nda al\u00fcminyum kal\u0131nt\u0131s\u0131 olmamas\u0131 ve az yer kaplamas\u0131 say\u0131labilir. Dezavantajlar\u0131 da a\u00e7\u0131kt\u0131r: oluk tipi gaz gidericinin al\u00fcminyum s\u0131v\u0131s\u0131 derinli\u011finin daha s\u0131\u011f olmas\u0131 nedeniyle, kabarc\u0131klar\u0131n al\u00fcminyum s\u0131v\u0131s\u0131 i\u00e7indeki kalma s\u00fcresi daha k\u0131sad\u0131r; bu nedenle gaz giderme etkisi, kutu tipi gaz gidericinkinden biraz daha d\u00fc\u015f\u00fckt\u00fcr. Is\u0131tma sistemi bulunmad\u0131\u011f\u0131ndan, erimi\u015f al\u00fcminyum havzadan ge\u00e7erken s\u0131cakl\u0131\u011f\u0131 (genellikle 10-35\u00b0C kadar) d\u00fc\u015fer. gaz giderme \u00fcnitesi<\/a>, bu da sonraki d\u00f6k\u00fcm s\u00fcrecini etkileyecektir.
\nKanal tipi gaz gidericinin grafit \u00e7ubu\u011funun\/rotorunun h\u0131z\u0131 \u00e7ok y\u00fcksektir (>1000 dev\/dk), bu nedenle grafit \u00e7ubu\u011funun\/rotorunun hizmet \u00f6mr\u00fc k\u0131sad\u0131r ve daha fazla c\u00fcruf olu\u015fur. Kabarc\u0131klar erimi\u015f al\u00fcminyumda k\u0131sa bir s\u00fcre kald\u0131\u011f\u0131ndan gaz giderme etkisi olumsuz etkilenir; bu nedenle operat\u00f6r genellikle inert gaz\u0131n ak\u0131\u015f h\u0131z\u0131n\u0131 art\u0131rarak bu olumsuz etkiyi telafi eder, bu da inert gaz\u0131n b\u00fcy\u00fck miktarda t\u00fcketilmesine yol a\u00e7ar.<\/p>\n

(g\u00f6zenekli seramik filtre<\/a>)
\n2.3 Vakumlu gaz giderici
\nVakumlu gaz gidericinin yap\u0131s\u0131, iki b\u00f6l\u00fcme ayr\u0131lan oluk tipi gaz gidericinin yap\u0131s\u0131na benzerdir: gaz giderme \u00fcnitesi ve vakumlu gaz giderme haznesi (bkz. \u015eekil 8).<\/p>\n

\"vakumla

vakumla gaz giderme \u00fcnitesi<\/p><\/div>\n

Vakumlu gaz giderme haznesi, al\u00fcminyum s\u0131v\u0131s\u0131n\u0131n ak\u0131\u015f h\u0131z\u0131na g\u00f6re tek hazneli, \u00e7ift hazneli ve \u00e7ok hazneli olarak s\u0131n\u0131fland\u0131r\u0131labilir. Kutu tipi ile oluk tipi gaz gidericiler aras\u0131ndaki fark, vakumlu gaz gidericinin grafit rotorunun gaz giderme haznesinin taban\u0131na monte edilmi\u015f olmas\u0131d\u0131r. Gaz giderme odas\u0131n\u0131n taban\u0131, vakumlu gaz giderme odas\u0131n\u0131n gaz giderme \u00fcnitesiyle ileti\u015fim kurmas\u0131 i\u00e7in olukludur (bkz. \u015eekil 9). Erimi\u015f al\u00fcminyum gaz giderme \u00fcnitesinden ge\u00e7erken, vakum pompas\u0131 veya di\u011fer y\u00f6ntemlerin etkisiyle gaz giderme odas\u0131 negatif bas\u0131n\u00e7 olu\u015fturur ve b\u00f6ylece vakumlu gaz giderme odas\u0131ndaki al\u00fcminyum s\u0131v\u0131s\u0131n\u0131n seviyesi y\u00fckselir. Al\u00fcminyum s\u0131v\u0131 seviyesi belirli bir y\u00fcksekli\u011fe ula\u015ft\u0131ktan sonra, grafit rotor d\u00f6nmeye ba\u015flar ve al\u00fcminyum s\u0131v\u0131s\u0131n\u0131 gazdan ar\u0131nd\u0131rmak ve ar\u0131tmak i\u00e7in inert gaz enjekte eder. Gaz giderme i\u015flemi bitti\u011finde, vakum odas\u0131ndaki negatif bas\u0131n\u00e7 serbest b\u0131rak\u0131l\u0131r ve vakum odas\u0131ndaki al\u00fcminyum s\u0131v\u0131s\u0131n\u0131n seviyesi, gaz giderme \u00fcnitesinin s\u0131v\u0131 seviyesine e\u015fit olana kadar d\u00fc\u015fer.<\/p>\n

\"Vakumla

Vakumla gaz giderme odas\u0131n\u0131n i\u00e7 yap\u0131s\u0131<\/p><\/div>\n

Vakumlu gaz gidericinin avantajlar\u0131 aras\u0131nda al\u00fcminyum kal\u0131nt\u0131s\u0131 olmamas\u0131 ve az yer kaplamas\u0131 say\u0131labilir. Ayr\u0131ca, s\u0131v\u0131 al\u00fcminyum vakum ortam\u0131nda gazdan ar\u0131nd\u0131r\u0131l\u0131p kar\u0131\u015ft\u0131r\u0131ld\u0131\u011f\u0131ndan, oksit miktar\u0131 daha azd\u0131r ve s\u0131v\u0131 al\u00fcminyum nispeten temizdir. Vakumlu gaz gidericinin dezavantajlar\u0131: 1) Al\u00fcminyum s\u0131v\u0131s\u0131n\u0131n temizli\u011fi konusunda y\u00fcksek gereksinimler; 2) Grafit rotor alt k\u0131s\u0131mda monte edildi\u011finden ve al\u00fcminyum s\u0131v\u0131s\u0131n\u0131n dibinde daha fazla c\u00fcruf bulundu\u011fundan, grafit rotorun a\u015f\u0131nmas\u0131 kolayd\u0131r. \u015eu anda, vakumlu gaz gidericiler piyasada yayg\u0131n olarak kullan\u0131lmamaktad\u0131r.
\n2.4 Ultrasonik gaz giderici
\nUltrasonik gaz giderici, ABD\u2019deki South Line Co., Ltd. taraf\u0131ndan ba\u015far\u0131yla geli\u015ftirilen yeni bir gaz giderici t\u00fcr\u00fcd\u00fcr. Ultrasonik gaz giderici, geleneksel rotorlu gaz gidericiden farkl\u0131d\u0131r; yap\u0131s\u0131 bir ultrasonik verici ve ultrasonik probdan olu\u015fur (bkz. \u015eekil 10).<\/p>\n

\"Ultrasonik

Ultrasonik gaz giderme \u00fcnitesinin \u015fematik \u015femas\u0131<\/p><\/div>","protected":false},"excerpt":{"rendered":"

Abstract: The online degassing process(degassing unit) is studied, and according to the characteristics of several kinds of aluminum and aluminum alloy online degassing processes and equipment that are commonly used at present, the box-type degasser, launder-type degasser, and vacuum degasser are described in detail. The…<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[45391,26523],"tags":[],"yoast_head":"\nDevelopment of On-line Refining and Degassing unit Technology and Equipment for Aluminum Melt<\/title>\n<meta name=\"description\" content=\"he online degassing process(degassing unit) is studied, and according to the characteristics of several kinds of aluminum\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.adtechamm.com\/tr\/development-of-on-line-refining-and-degassing-unit-technology-and-equipment-for-aluminum-melt\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Development of On-line Refining and Degassing unit Technology and Equipment for Aluminum Melt\" \/>\n<meta property=\"og:description\" content=\"he online degassing process(degassing unit) is studied, and according to the characteristics of several kinds of aluminum\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.adtechamm.com\/tr\/development-of-on-line-refining-and-degassing-unit-technology-and-equipment-for-aluminum-melt\/\" \/>\n<meta property=\"og:site_name\" content=\"Adtech China\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/avril.allen.3994\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/profile.php?id=100058838456679\" \/>\n<meta property=\"article:published_time\" content=\"2023-04-11T08:02:47+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2023\/04\/1.jpg\" \/>\n<meta name=\"author\" content=\"AdTech\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@AdTech_China\" 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