{"id":3923,"date":"2018-11-12T05:48:31","date_gmt":"2018-11-12T05:48:31","guid":{"rendered":"http:\/\/www.adtechamm.com\/?p=3923"},"modified":"2018-11-12T05:48:31","modified_gmt":"2018-11-12T05:48:31","slug":"degassing-purification-system","status":"publish","type":"post","link":"https:\/\/www.adtechamm.com\/tr\/degassing-purification-system\/","title":{"rendered":"Gaz Giderme ve Ar\u0131tma Sistemi"},"content":{"rendered":"

Gaz Giderme ve Ar\u0131tma Sistemi<\/strong><\/p>\n

Demir d\u0131\u015f\u0131 metal d\u00f6k\u00fcmlerine, \u00f6zellikle de al\u00fcminyum ve al\u00fcminyum ala\u015f\u0131ml\u0131 d\u00f6k\u00fcmlere olan talebin hacimsel olarak artmas\u0131yla birlikte, d\u00f6k\u00fcmhaneler \u00fczerinde d\u00f6k\u00fcm kalitesini iyile\u015ftirme y\u00f6n\u00fcnde artan bir bask\u0131 bulunmaktad\u0131r. Bu durum, in\u015faat, m\u00fchendislik, ula\u015ft\u0131rma gibi \u00e7o\u011fu end\u00fcstriyel uygulama i\u00e7in ge\u00e7erli olmakla birlikte, \u00f6zellikle son birka\u00e7 y\u0131lda kullan\u0131m\u0131n\u0131n h\u0131zla artt\u0131\u011f\u0131 havac\u0131l\u0131k ve otomotiv sekt\u00f6rleri i\u00e7in ge\u00e7erlidir. Ergitilen metalden safs\u0131zl\u0131klar\u0131 gidererek daha temiz ve daha kaliteli metal elde etmek amac\u0131yla, d\u00f6k\u00fcmhaneler taraf\u0131ndan kullan\u0131lan en yayg\u0131n ve etkili temizleme y\u00f6ntemlerinden biri \u015fudur: Gaz Giderme ve Ar\u0131tma Sistemi<\/strong>. Al\u00fcminyum d\u00f6k\u00fcmlere y\u00f6nelik k\u00fcresel \u00fcretim hacmi ve kalite talebinin artmas\u0131, sekt\u00f6r\u00fcn giderek artan k\u00fcreselle\u015fmesi ve d\u00f6k\u00fcmhaneler aras\u0131ndaki rekabetin yo\u011funla\u015fmas\u0131yla birlikte, d\u00f6k\u00fcmhaneler k\u00fcresel \u00f6l\u00e7ekte fiyat a\u00e7\u0131s\u0131ndan rekabet\u00e7i d\u00f6k\u00fcmler sunabilmek i\u00e7in m\u00fcmk\u00fcn olan en verimli ve maliyet etkin s\u00fcre\u00e7leri uygulamak zorundad\u0131r.<\/p>\n

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

Gaz Giderme ve Ar\u0131tma Sisteminin Teorik \u0130lkeleri<\/strong><\/p>\n

Erimi\u015f al\u00fcminyumda bulunan safs\u0131zl\u0131klar iki ana t\u00fcre ayr\u0131l\u0131r: \u00e7\u00f6z\u00fcnm\u00fc\u015f hidrojen ve kat\u0131<\/p>\n

metal olmayan kal\u0131nt\u0131lar. Metal so\u011fuduk\u00e7a \u00e7\u00f6z\u00fcnm\u00fc\u015f hidrojen \u00e7\u00f6zeltiden ayr\u0131l\u0131r ve istenmeyen g\u00f6zeneklilik olu\u015fturur. Bu g\u00f6zeneklilik, metal olmayan kat\u0131 kal\u0131nt\u0131larla birlikte mukavemeti d\u00fc\u015f\u00fcr\u00fcr ve al\u00fcminyumdan \u00fcretilen d\u00f6k\u00fcmlerin nihai \u00f6zelliklerini olumsuz etkiler.<\/p>\n

Al\u00fcminyumda su buhar\u0131 ile a\u015fa\u011f\u0131daki gibi bir reaksiyon meydana gelir:
\n2 Al + 3 H\u2082O = Al\u2082O\u2083 + 3 H\u2082<\/p>\n

Molek\u00fcler hidrojen daha sonra erimi\u015f metal i\u00e7inde ayr\u0131\u015f\u0131r:
\n3 H\u2082 = 6 H
\nErimi\u015f al\u00fcminyum, atmosferdeki oksijenle de etkile\u015fime girer; bu nedenle, (a) denkleminde g\u00f6r\u00fclen oksidasyon reaksiyonuna ek olarak, a\u015fa\u011f\u0131daki reaksiyon da ger\u00e7ekle\u015fir:
\n4 Al + 3 O\u2082 = 2 Al\u2082O\u2083<\/p>\n

\"Gaz<\/a><\/p>\n

Gaz Giderme ve Ar\u0131tma Sistemi Oksidasyon Direnci<\/strong>
\nBu reaksiyon, eritme i\u015flemi s\u0131ras\u0131nda ve ard\u0131ndan erimi\u015f metalin aktar\u0131lmas\u0131 s\u00fcrecinde erimi\u015f metalin y\u00fczeyinde bir oksit tabakas\u0131n\u0131n olu\u015fmas\u0131na neden olur. Olu\u015fan oksitler erimi\u015f malzemenin k\u00fctlesinde hapsolur ve daha sonra bitmi\u015f d\u00f6k\u00fcm par\u00e7aya aktar\u0131l\u0131r. Karb\u00fcrler, nitr\u00fcrler veya bor\u00fcrler gibi di\u011fer metalik olmayan kal\u0131nt\u0131lar ise pota malzemesi veya di\u011fer refrakter malzemeler gibi kaynaklardan gelebilir.<\/p>\n

Olu\u015fan her t\u00fcrl\u00fc kal\u0131nt\u0131, d\u00f6k\u00fcm\u00fcn yap\u0131s\u0131nda kusurlara yol a\u00e7acak ve dolay\u0131s\u0131yla mekanik \u00f6zellikler \u00fczerinde olumsuz bir etki yaratacakt\u0131r; ayr\u0131ca i\u015fleme zorluklar\u0131na ve tak\u0131m tezgahlar\u0131nda olas\u0131 hasarlara neden olacakt\u0131r.<\/p>\n

Bu nedenle, optimum kaliteye ula\u015fmak i\u00e7in d\u00f6k\u00fcm \u00f6ncesinde erimi\u015f metalden \u00e7\u00f6z\u00fcnm\u00fc\u015f hidrojen ve metalik olmayan kal\u0131nt\u0131lar\u0131 gidermek hayati \u00f6nem ta\u015f\u0131maktad\u0131r. Metali temizlemek i\u00e7in geli\u015ftirilen i\u015flem, inert bir gazla ak\u0131tma i\u015flemini i\u00e7eren fiziksel bir s\u00fcre\u00e7tir. Erimi\u015f malzeme i\u00e7inde \u00e7\u00f6z\u00fcnm\u00fc\u015f olan hidrojen, ak\u0131tma gaz\u0131n\u0131n y\u00fckselen kabarc\u0131klar\u0131na yay\u0131l\u0131r ve erimi\u015f malzemenin y\u00fczeyine ta\u015f\u0131n\u0131r; bu s\u00fcre\u00e7 iki ana ad\u0131ma dayan\u0131r:
\nHidrojenin dif\u00fczyon s\u0131n\u0131r tabakas\u0131 yoluyla inert gaz kabarc\u0131klar\u0131na dif\u00fczyon h\u0131z\u0131
\n\u0130nert gaz kabarc\u0131klar\u0131ndaki hidrojen konsantrasyonu<\/p>\n

Dif\u00fczyon, gaz giderme s\u00fcrecinde h\u0131z\u0131 belirleyen a\u015famad\u0131r; bu nedenle, optimum gaz giderme verimlili\u011fi i\u00e7in a\u015fa\u011f\u0131daki ko\u015fullar\u0131n sa\u011flanmas\u0131 gerekmektedir:
\nErimi\u015f metal i\u00e7inde uzun s\u00fcre kalabilen k\u00fc\u00e7\u00fck boyutlu inert gaz kabarc\u0131klar\u0131. Bu durum, inert gaz kabarc\u0131\u011f\u0131 ile erimi\u015f metal aras\u0131nda geni\u015f bir temas y\u00fczeyi sa\u011flar ve dolay\u0131s\u0131yla dif\u00fczyon tabakas\u0131 a\u00e7\u0131s\u0131ndan daha y\u00fcksek bir k\u00fctle transfer katsay\u0131s\u0131 sa\u011flar.
\nErimi\u015f metalin t\u00fcm kesiti boyunca inert gaz kabarc\u0131klar\u0131n\u0131n tutarl\u0131 ve geni\u015f bir da\u011f\u0131l\u0131m\u0131
\nErimi\u015f malzemenin, hidrojenin inert gaz kabarc\u0131\u011f\u0131na ta\u015f\u0131nmas\u0131n\u0131 h\u0131zland\u0131ran yeterli hareketi
\nAtmosferle reaksiyon sonucu hidrojenin yeniden emilmesini \u00f6nlemek amac\u0131yla erimi\u015f malzeme havuzunun y\u00fczeyinin sakin tutulmas\u0131.<\/p>\n

Oksitler ve di\u011fer metalik olmayan kal\u0131nt\u0131lar, esas olarak flotasyon yoluyla giderilir; zira k\u00fc\u00e7\u00fck inert gaz kabarc\u0131klar\u0131 oksitlere yap\u0131\u015farak onlar\u0131 banyo y\u00fczeyine \u00e7\u0131kar\u0131r. Hidrojen gideriminde ge\u00e7erli olan ilkeler, oksitlerin gideriminde de ge\u00e7erlidir.<\/p>","protected":false},"excerpt":{"rendered":"

Degassing And Purification System With demand for non ferrous metal castings increasing in volume especially the castings of aluminium and aluminum alloy, there is also a growing pressure on foundries to improve casting quality as technical specifications for most industrial applications including building, engineering, transport,…<\/p>","protected":false},"author":1,"featured_media":3927,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[52],"tags":[],"yoast_head":"\nDegassing And Purification System - Sales@adtechamm.com<\/title>\n<meta name=\"description\" content=\"one of the most common and effective cleaning methods used by foundries is Degassing And Purification System....sales@adtechamm.com\" \/>\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\/degassing-purification-system\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Degassing And Purification System - 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