{"id":4694,"date":"2019-04-17T01:42:14","date_gmt":"2019-04-17T01:42:14","guid":{"rendered":"http:\/\/www.adtechamm.com\/?p=4694"},"modified":"2019-06-03T08:08:47","modified_gmt":"2019-06-03T08:08:47","slug":"aluminum-foundry","status":"publish","type":"post","link":"https:\/\/www.adtechamm.com\/tr\/aluminum-foundry\/","title":{"rendered":"Al\u00fcminyum d\u00f6k\u00fcmhanesinde d\u00f6k\u00fcm kayb\u0131n\u0131 azaltma"},"content":{"rendered":"

Al\u00fcminyum d\u00f6k\u00fcmhanesinde d\u00f6k\u00fcm kayb\u0131n\u0131 azaltma<\/strong><\/p>\n

Al\u00fcminyum D\u00f6k\u00fcmhanesi, dozajlama, kar\u0131\u015ft\u0131rma, dinlendirme, ar\u0131tma ve c\u00fcruf ay\u0131rma gibi i\u015flemler yoluyla s\u0131v\u0131 al\u00fcminyumu al\u00fcminyum k\u00fcl\u00e7eleri, \u00e7ubuklar veya di\u011fer \u015fekillerde bitmi\u015f ve yar\u0131 mamul \u00fcr\u00fcnlere d\u00f6n\u00fc\u015ft\u00fcr\u00fcr. Al\u00fcminyum ve al\u00fcminyum ala\u015f\u0131mlar\u0131, d\u00f6k\u00fcm i\u015flemi s\u0131ras\u0131nda oksidasyon, ar\u0131tma, c\u00fcruf ve di\u011fer nedenlerle farkl\u0131 derecelerde kayba u\u011frar.<\/p>\n

Al\u00fcminyum d\u00f6k\u00fcm kayb\u0131, eritme s\u00fcrecinde oksidasyon, buharla\u015fma ve f\u0131r\u0131n duvar\u0131 ile ar\u0131tma maddesi aras\u0131ndaki etkile\u015fimden kaynaklanan geri kazan\u0131lamayan metal kayb\u0131 nedeniyle metal ve al\u00fcminyum ala\u015f\u0131m\u0131nda meydana gelen kay\u0131plar\u0131 ifade eden genel bir terimdir.<\/p>\n

D\u00f6k\u00fcm kayb\u0131n\u0131n ba\u015fl\u0131ca d\u0131\u015f belirtisi iki k\u0131sma ayr\u0131labilir: Bunlardan biri saf al\u00fcminyum k\u00fcl\u00fc \u015feklindeyken, di\u011feri ise y\u0131\u011f\u0131n halindeki al\u00fcminyum ile kusurlu al\u00fcminyum ve al\u00fcminyum c\u00fcrufu \u015feklindedir.<\/p>\n

\"Al\u00fcminyum<\/p>\n

Al\u00fcminyumun oksidatif yanma ilkesi, a\u015fa\u011f\u0131daki kimyasal denklemler arac\u0131l\u0131\u011f\u0131yla daha iyi anla\u015f\u0131labilir.<\/p>\n

Erime s\u0131cakl\u0131\u011f\u0131 aral\u0131\u011f\u0131nda al\u00fcminyum, oksijenle y\u00fcksek bir afiniteye sahiptir ve kolayca oksitlenir. Oksitlenme sonras\u0131nda y\u00fczeyde Al\u2082O\u2083 tabakas\u0131 olu\u015fur; s\u0131cakl\u0131k 500 \u00b0C\u2019nin \u00fczerine \u00e7\u0131kt\u0131\u011f\u0131nda ise bu tabaka, metastabil r-Al\u2082O\u2083 halini al\u0131r.
\nMetastabil oksit tabakas\u0131n\u0131n kararl\u0131 oksit tabakas\u0131na d\u00f6n\u00fc\u015f\u00fcm\u00fc s\u0131ras\u0131nda hacim daralmas\u0131 meydana gelir ve bu s\u00fcre\u00e7te daha fazla oksidasyon ve \u00e7atlama olu\u015fur.
\nAl\u00fcminyum eriyik s\u0131cakl\u0131\u011f\u0131 artt\u0131k\u00e7a ve s\u00fcre uzad\u0131k\u00e7a, oksit tabakas\u0131 daha h\u0131zl\u0131 b\u00fcy\u00fcr ve oksidasyon miktar\u0131 ile kal\u0131nl\u0131\u011f\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde artar.<\/p>\n

D\u00f6k\u00fcm kayb\u0131n\u0131 etkileyen fakt\u00f6rler \u015funlard\u0131r:<\/strong>
\n1) S\u0131v\u0131 al\u00fcminyumun s\u0131cakl\u0131\u011f\u0131.
\n2) S\u0131v\u0131 al\u00fcminyum ile oksijenin temas g\u00fcc\u00fc.
\n3) Al\u00fcminyum c\u00fcrufundaki al\u00fcminyum i\u00e7eri\u011fi.
\n4) C\u00fcruf taraf\u0131ndan d\u0131\u015far\u0131 at\u0131lan al\u00fcminyum s\u0131v\u0131s\u0131.
\n5) Kusurlu al\u00fcminyum ve d\u00f6kme al\u00fcminyumun fiyat\u0131 ne kadard\u0131r?.
\n6) Di\u011fer zararlar<\/p>\n

\"Al\u00fcminyum<\/p>\n

Al\u00fcminyum s\u0131v\u0131s\u0131 ile hava aras\u0131ndaki temas kuvvetini azalt\u0131n. S\u0131v\u0131 al\u00fcminyum ile oksijen aras\u0131ndaki temas kuvveti ne kadar b\u00fcy\u00fckse, oksidasyon kayb\u0131 o kadar ciddi olur ve d\u00f6k\u00fcm kayb\u0131 da o kadar artar.<\/strong>
\n1) S\u0131v\u0131 al\u00fcminyum ile oksijen aras\u0131ndaki temas s\u00fcresini azalt\u0131n: 1 \u00dcretim gereklilikleri \u00e7er\u00e7evesinde, f\u0131r\u0131ndaki al\u00fcminyum m\u00fcmk\u00fcn olan en k\u0131sa s\u00fcrede bitmi\u015f \u00fcr\u00fcne d\u00f6n\u00fc\u015ft\u00fcr\u00fclmelidir; vardiyada \u00e7al\u0131\u015fmak daha uygun olacakt\u0131r. S\u0131v\u0131 al\u00fcminyumun f\u0131r\u0131nda \u00e7ok uzun s\u00fcre kalmas\u0131na izin vermeyin; 2 D\u00f6k\u00fcm ekipman\u0131n\u0131 makul bir \u015fekilde yerle\u015ftirin, s\u0131v\u0131 al\u00fcminyumun havaya maruz kalma s\u00fcresini azaltmak i\u00e7in oluk uzunlu\u011funu m\u00fcmk\u00fcn oldu\u011funca k\u0131salt\u0131n ve ayn\u0131 zamanda olu\u011fun \u00fcst k\u0131sm\u0131n\u0131 al\u00fcminyum silikat yal\u0131t\u0131m levhas\u0131 ile \u00f6rt\u00fcn; bu, belirli bir \u0131s\u0131 yal\u0131t\u0131m etkisi sa\u011flamakla kalmaz, ayn\u0131 zamanda oluk i\u00e7indeki oksijen i\u00e7eri\u011fini de azalt\u0131r. .
\nK\u0131sacas\u0131, \u00e7e\u015fitli nedenlerle s\u0131v\u0131 al\u00fcminyumun kar\u0131\u015ft\u0131rma f\u0131r\u0131n\u0131nda uzun s\u00fcre bekletilmesini \u00f6nlemek ve al\u00fcminyum ile oksijen aras\u0131ndaki temas s\u00fcresini k\u0131saltarak d\u00f6k\u00fcm kayb\u0131n\u0131 azaltmak amac\u0131yla.
\n2) S\u0131v\u0131 al\u00fcminyum kar\u0131\u015ft\u0131rma y\u00f6nteminin kontrol\u00fc: \u0130ster yapay b\u00fcy\u00fck \u00f6l\u00e7ekli kar\u0131\u015ft\u0131rma ister mekanik kar\u0131\u015ft\u0131rma olsun, bu i\u015flem f\u0131r\u0131n kap\u0131s\u0131n\u0131n a\u00e7\u0131k oldu\u011fu durumda ger\u00e7ekle\u015ftirilir; bu durum sadece s\u0131v\u0131 seviyesinde b\u00fcy\u00fck dalgalanmalara yol a\u00e7makla kalmaz, oksijenle temas alan\u0131n\u0131 art\u0131r\u0131r, ayn\u0131 zamanda f\u0131r\u0131n i\u00e7indeki oksijen i\u00e7eri\u011fini de y\u00fckseltir. Bu durum, yukar\u0131daki kimyasal reaksiyonu h\u0131zland\u0131racak ve yanma kayb\u0131 artacakt\u0131r. Elektromanyetik kar\u0131\u015ft\u0131rma ise kapal\u0131 durumda ger\u00e7ekle\u015ftirilebilir; bu sayede s\u0131v\u0131 seviyesindeki dalgalanma az olur, ilgili dezavantajlar etkili bir \u015fekilde \u00f6nlenir ve ayn\u0131 zamanda f\u0131r\u0131na giren havadaki nem azal\u0131r, s\u0131v\u0131 al\u00fcminyumun hidrojeni emme olas\u0131l\u0131\u011f\u0131 da d\u00fc\u015fer.
\n3) S\u0131v\u0131 al\u00fcminyum ar\u0131tma i\u015flemi s\u0131ras\u0131nda kabarc\u0131k y\u00fcksekli\u011fini kontrol edin: Genel ar\u0131tma y\u00f6ntemi, ar\u0131tma maddesinin f\u0131r\u0131na manuel olarak p\u00fcsk\u00fcrt\u00fclmesi ve ard\u0131ndan kar\u0131\u015ft\u0131rma ve ar\u0131tma i\u015flemlerinin ger\u00e7ekle\u015ftirilmesidir; ancak baz\u0131 ala\u015f\u0131m \u00fcretimlerinde, ar\u0131tma i\u00e7in azotla \u00fcfleme yap\u0131lmas\u0131 gerekir (daha uzun ar\u0131tma s\u00fcresi, 30 dakikaya kadar) (Sol ve sa\u011f), belirli bir kabarc\u0131k y\u00fcksekli\u011fi bulunmal\u0131 ve yan tarafa yatay, ba\u015fa dikey olarak s\u0131v\u0131 al\u00fcminyumda b\u00fcy\u00fck dalgalanmaya neden olmal\u0131d\u0131r; bu nedenle azot bas\u0131nc\u0131n\u0131 ayarlamak daha iyidir; kabarc\u0131k y\u00fcksekli\u011fi 10-15 mm olarak kontrol edilir.<\/p>\n

DTECH, metalurjik malzeme \u00fcretimine odaklanmaya devam ediyor.<\/p>\n

ADTECH, metalurjik malzeme \u00fcretimine odaklanmaya devam eden ve International Enterprise taraf\u0131ndan takip edilen \u00f6nc\u00fclerden biridir.
\n1.Seramik K\u00f6p\u00fck Filtre<\/a>
\n2. Gaz Giderme \u00dcnitesi
\n3. Filtre Kutusu
\n4. S\u0131cak \u00fcst d\u00f6k\u00fcm serisi
\n5. Rulo d\u00f6k\u00fcm nozulu
\n6. Flux serisi
\n7. Di\u011fer Metalurjik Malzemeler<\/p>\n

SALES@ADTECHAMM.COM<\/p>\n